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Schluter DHERS/BW Installation Guide

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1. O Once the tile installation is complete retest the heating cable and record values in the heating cable tests log page 26 Allow the assembly to cure for 7 days after grouting before putting the floor warming into service Operating Tips e Do not place furniture or mats over the floor temperature sensor They can act as insulation and raise the floor temperature reading at the thermostat This may cause the heating to turn off before the remainder of the floor reaches the desired temperature e Area rugs are not recommended over the DITRA HEAT system e Futons mattresses floor level furniture pillows etc must not be placed directly onto the heated floor Placement of items directly onto the heated floor will prevent heat diffusion e air circulation and could result in damage 20 INSTALLATION THIN SET FACTS Discussion of thin set mortars and Schluter DITRA HEAT installations QUESTION Can ceramic tile including porcelain tile be set on DITRA HEAT with unmodified thin set mortar ANSWER YES In fact we recommend it Here s why Portland cement based unmodified thin set mortars are dependent on the presence of moisture for hydration in order to gain strength Since DITRA HEAT is impervious it does not deprive the mortar of its moisture This allows the cement to properly hydrate resulting in a strong dense bond coat In fact after the mortar has reached final set usually within 24 hours unmodifie
2. 4 At the joints fill the matting with unmodified Comb additional unmodified thin set Apply 5 127 mm wide KERDI BAND thin set mortar approximately 8 203 mm mortar over the joint using a 1 4 x 3 16 centered over the joint Using the flat side wide centered over the joint 6 mm x 5 mm V notched trowel or the of the trowel firmly press the banding into KERDI TROWEL which features a 1 8 x 1 8 the mortar to ensure 100 coverage and to 3mm x 3 mm square notched design remove excess mortar and air pockets O At all wall junctions apply KERDI BAND as Note KERDI BAND must lap DITRA HEAT at seams and at floor wall transitions by a minimum of described in steps 1 3 centered where the 2 50 mm in order to maintain waterproof integrity wall and floor meet In some applications the vertical section of the floor wall transition will not accept a bond to unmodified thin set mortar Connections to such elements can be achieved using KERDI FIX sealant and bonding compound or suitable trowel applied waterproofing materials such as those that require atmospheric moisture to cure e g urethane sealant INSTALLATION 19 Tiles Note While the heating cable is protected by the DITRA HEAT matting be careful when applying the mortar to not damage the cable with the notched trowel TOENG Tile can be installed over DITRA HEAT EN Solidly embed the tiles in the setting material immediately no need
3. Schluter Systems PROFILE OF INNOVATION Ze e e o o e e o o e e d o e e L 4 L 4 4 4 e e o d e e d d e e s s s s s s z s s s Electric Floor Warming System with Integrated Uncoupling Technology e A schiuter DITRA HEAT Electric Floor Warming System with Integrated Uncoupling Technology Ceramic and stone tiles are the ideal surface coverings because they are durable easy to maintain and hygienic However two common barriers to the selection of tile as a floor covering are concerns about cracking and the perception that tiles are cold Floor warming systems are a growing trend in tile applications but none address concerns about cracking A viable installation system must address the magnified fluctuations in temperature that contribute to increased shear stresses between the substrate and the tile covering Schluter DITRA HEAT integrates customizable comfortable electric floor warming with the functions associated with DITRA uncoupling waterproofing vapor management and support to ensure a long lasting installation DITRA HEAT combines the flexibility of loose heating cables with the ease of installation of mat systems Cables can be placed wherever heat is desired without creating height differences in the floor Self leveling compounds are not required to encapsulate the cables significantly reducing installation time and effort compared to uncoupling membranes over other electric floor warming
4. CLAIMS ON THIS LIMITED WARRANTY To make a claim under this Limited Warranty the Owner must provide Schluter Systems with written notice within 30 days of any alleged defect in the Products covered by this Limited Warranty together with date and proof of purchase of the Products proof of the costs of the original installation and name and address of all installers and completed heating cable tests log failing which this Limited Warranty shall be of no legal effect Schluter Systems reserves the right at its election and as a condition of this Limited Warranty to inspect the alleged failed and defective condition All U S Claims shall be sent to All Canadian Claims shall be sent to Schluter Systems L P Schluter Systems Canada Inc Attn Warranty Claims Dept Attn Warranty Claims Dept 194 Pleasant Ridge Road 21100 chemin Ste Marie Plattsburgh NY 12901 Ste Anne de Bellevue QC H9X 3Y8 For the purpose of this warranty Schluter Systems L P shall provide the warranty for all products for end users located in the United States and Schluter Systems Canada Inc shall provide the warranty for all products for end users located in Canada This warranty is limited to sales of the Products made in and intended for use in the United States and Canada Schluter DITRA HEAT System the Products The products are defined to include Schluter DITRA HEAT matting and DITRA HEAT heating cables WARRANTY 27 Schluter Systems a
5. Natural stone is a product of nature with a wide variety of colors patterns and textures that come together to distinguish it as one of the premiere surface coverings available on the market Some of stone s characteristics which add to its beauty and uniqueness are veins fissures starts and dry seams While these characteristics enhance its aesthetic appeal they re also indicators that point to the inherent variability of the flexural strength of natural stone which can have detrimental effects on serviceability This variability is underscored by examining the range of typical flexural bending strengths of ceramic tile compared to the range of strength for some common natural stones Schluter Systems contracted the Tile Council of North America TCNA to perform flexural strength testing on various commercially available ceramic tiles and dimension stones guided by the ASTM C880 Standard Test Method for Flexural Strength of Dimension Stone Five samples of each tile and stone were tested with the minimum recorded values displayed in the figure below We have chosen to show only minimum values since these represent the weakest samples which would be most prone to cracking in service over a bending substrate 6000 5000 4485 4241 4000 3000 2490 2438 2000 1856 1000 Minimum Recorded Flexural Strength psi 539 337 Porcelain A Ceramic B Porcelain B Granite Ceramic A White Carrara Slate Crema Marfil
6. ANSI A108 6 A108 9 A108 10 Other Considerations a tightly butted and or tented plywood or OSB seams must be addressed prior to installing DITRA HEAT vapor barrier on crawl space floors according to regional building codes a where a waterproof floor is required all DITRA HEAT seams and floor wall transitions must be sealed with KERDI BAND using unmodified thin set mortar see page 10 24 610 mm o c joist spacing double layer OSB or plywood subfloor Areas of Application over any even and structurally sound double layer OSB or plywood floor interior dry or wet areas Limitations a minimum 2 x 2 60 mm x 50 mm tile Requirements a maximum spacing of joists I joists or floor trusses is 24 670 mm o c double layer wood floor consisting of e minimum subfloor thickness 23 32 3 4 nom 19 mm tongue and groove e minimum underlayment thickness 11 382 3 8 nom 10 mm Substrate preparation verify that subfloor panels are properly fastened to framing members underlayment minimum 11 32 3 8 nom 10 mm thick Exposure 1 plugged face plywood or OSB with 1 8 8 mm gap between sheets see page 14 for underlayment installation guidelines any leveling of the subfloor must be done prior to installing DITRA HEAT Movement Joints a DITRA HEAT does not eliminate the need for movement joints including perimeter joints within the tiled surface Movement joints must be i
7. DITRA HEAT vapor barrier on crawl space floors according to regional building codes a where a waterproof floor is required all DITRA HEAT seams and floor wall transitions must be sealed with KERDI BAND using unmodified thin set mortar see page 10 DH V T 15 Tile or wood base Ceramic or stone tile RONDEC DILEX EKE Unmodified thin set mortar KERDI BAND DITRA HEAT uncoupling membrane and heating cables Fast setting latex p c mortar Existing vinyl Plywood or OSB Joists I joists or trusses NI sch AAA kkk kkk kk DH SP TS 15 Ceramic or stone tile Unmodified thin set mortar DITRA HEAT uncoupling membrane and heating cables Latex p c mortar Plywood or OSB underlayment Structural plank subfloor Joists dch AAAA kk kak kak Floors Interior Existing Vinyl Floors Areas of Application over any even and structurally sound substrate with existing vinyl flooring a interior dry or wet areas Limitations a minimum 2 x 2 60 mm x 50 mm tile cushioned vinyl unacceptable perimeter bonded vinyl flooring unacceptable a multiple layers of vinyl unacceptable Requirements for wood substrates subfloor underlayment configuration according to detail DH W16 T DH W19 T DH W24 T or DH W S Substrate Preparation ensure that the structure beneath the vinyl is sound and adequate ensure that vinyl is well adhered remove any wax a
8. I joists or floor trusses is 24 670 mm o c double layer wood floor consisting of e minimum subfloor thickness 23 32 3 4 nom 19 mm tongue and groove e minimum underlayment thickness 11 382 3 8 nom 10 mm Substrate Preparation verify that subfloor panels are properly fastened to framing members a underlayment minimum 11 32 3 8 nom 10 mm thick Exposure 1 plugged face plywood or OSB with 1 8 8 mm gap between sheets see page 14 for underlayment installation guidelines any leveling of the subfloor must be done prior to installing DITRA HEAT Movement Joints a DITRA HEAT does not eliminate the need for movement joints including perimeter joints within the tiled surface Movement joints must be installed in accordance with industry standards and norms see page 11 of this Handbook TCNA EJ171 and TTMAC 301 MJ Setting and Grouting Materials a latex portland cement p c mortar ANSI A118 11 unmodified thin set mortar ANSI A118 1 a grout ANSI A118 3 A118 6 A118 7 A118 8 Setting and Grouting Specifications a tile ANSI A108 5 a grout ANSI A108 6 A108 9 A108 10 Other Considerations certain moisture sensitive stones e g green marble or resin backed tiles may require special setting materials Consult stone supplier and Schluter Systems for more information a tightly butted and or tented plywood or OSB seams must be addressed prior to installing
9. Requirements a Slab to be structurally sound a Slab to be free of waxy or oily films and curing compounds when present mechanical scarifying is necessary a the installation of DITRA HEAT and tile can begin as soon as the slab can be walked upon 8 CONCRETE Floors Interior Ceramic or Stone Tile Substrate Preparation any leveling of the subfloor must be done prior to installing DITRA HEAT Movement Joints a DITRA HEAT does not eliminate the need for movement joints including perimeter joints within the tiled surface Movement joints must be installed in accordance with industry standards and norms see page 11 of this Handbook TCNA EJ171 and TTMAC 301 MJ Setting and Grouting Materials a unmodified thin set mortar ANSI A118 1 a grout ANSI AT 18 3 A118 6 A118 7 A118 8 Setting and Grouting Specifications a tile ANSI A108 5 a grout ANSI A108 6 A108 9 A108 10 Other Considerations a where a waterproof floor is required all DITRA HEAT seams and floor wall transitions must be sealed with KERDI BAND using unmodified thin set mortar see page 10 a certain moisture sensitive stones e g green marble or resin backed tiles may require special setting materials Consult stone supplier and Schluter Systems for more information GYPSUM Every substrate presents unique challenges Bonding ceramic or stone tiles directly to gypsum concrete substrates is generally considered questionable o
10. Schluter Systems L P e 194 Pleasant Ridge Road Plattsburgh NY 12901 5841 Tel 800 472 4588 Fax 800 477 9783 Schluter Systems Canada Inc 21100 chemin Ste Marie Ste Anne de Bellevue QC H9X 3Y8 Tel 800 667 8746 Fax 877 667 2410 www schluter com 2015 Schluter Systems L P 04 2015 554508
11. HEAT uncoupling membrane and heating cables Latex p c mortar Double layer of plywood or OSB l joists or trusses dh Geh E dh LDS kak kak L d 19 2 488 mm o c joist spacing single layer OSB or plywood subfloor Areas of Application over any even and structurally sound OSB or plywood subfloor with 19 2 488 mm o c joist spacing interior dry or wet areas Limitations a minimum 2 x 2 60 mm x 50 mm tile a for natural stone see detail DH W S page 6 and natural stone discussion page 23 Requirements a maximum spacing of joists I joists or floor trusses is 19 2 488 mm o c a minimum subfloor thickness 23 32 3 4 nom 19 mm tongue and groove with 1 8 8 mm gap between sheets Substrate Preparation verify that subfloor panels are properly fastened to framing members a any leveling of the subfloor must be done prior to installing DITRA HEAT Movement Joints a DITRA HEAT does not eliminate the need for movement joints including perimeter joints within the tiled surface Movement joints must be installed in accordance with industry standards and norms see page 11 of this Handbook TCNA EJ171 and TTMAC 301 Mu Setting and Grouting Materials latex portland cement p c ANSI A118 11 unmodified thin set mortar ANSI A118 1 a grout ANSI A118 3 A118 6 A118 7 A118 8 mortar Setting and Grouting Specifications a tile ANSI A108 5 a grout
12. Travertine It is clear from the figure that the minimum recorded flexural strengths of these dimension stones tend to be significantly less than those of the ceramic tiles In some cases the differences are dramatic For example the minimum recorded flexural strength of the weakest travertine sample 837 psi was only 14 of the minimum flexural strength of the weakest ceramic sample 2438 psi In other words the weakest ceramic sample was more than 7 times as strong as the weakest travertine sample As another example the minimum recorded flexural strength of the weakest porcelain sample is more than 12 times as strong as the minimum recorded flexural strength of the weakest travertine sample Q Why does Schluter Systems recommend a double layer wood floor for installing natural stone over DITRA HEAT A There are three principle reasons 1 As illustrated above the fact that most stone products have a minimum flexural strength that is substantially lower than what is typical for ceramic tile 2 Stones are products of nature and complex heterogeneous materials with naturally occurring regions of discontinuity such as veins and fissures Such features can be weaker than the surrounding stone fabric and act as stress risers Concentrating bending stresses within the region of discontinuity and 3 When wood floor assemblies are subjected to forces such as loading both live and dead loads they produce flexural stresses in the surface
13. a where radiant heat tubes are laid over the subfloor gyosum poured to a height that is 3 4 19 mm above the tops of the tubes is required before installing DITRA HEAT residual moisture in gypsum screed 2 0 percentage by volume or less before installing DITRA HEAT Substrate preparation gypsum follow manufacturer s directions Movement Joints a DITRA HEAT does not eliminate the need for movement joints including perimeter joints within the tiled surface Movement joints must be installed in accordance with industry standards and norms see page 11 of this Handbook TCNA EJ171 and TTMAC 301 Mu Setting and Grouting Materials a unmodified thin set mortar ANSI A118 1 a grout ANSI A118 3 A118 6 A118 7 A118 8 Installation Specifications gypsum follow manufacturer s directions a tile ANSI A108 5 a grout ANSI A108 6 A108 9 A108 10 Other Considerations a since DITRA HEAT must bond to the gypsum concrete follow gypsum manufacturer s directions regarding primers and or special surface preparation before installing DITRA HEAT a where a waterproof floor is required all DITRA HEAT seams and floor wall transitions must be sealed with KERDI BAND using unmodified thin set mortar see page 10 certain moisture sensitive stones e g green marble or resin backed tiles may require special setting materials Consult stone supplier and Schluter Systems for more information vapor
14. are treated in the same manner as expansion joints See above Control Contraction Joints Control contraction joints are designed to induce controlled cracking caused by drying and chemical shrinkage at preselected locations They are typically formed by saw cutting tooling or through the use of inserts DITRA HEAT is not separated at control contraction joints however surface movement joints must be provided in the tile covering in accordance with the aforementioned guidelines See also Surface Joints Structural or Seismic Joints Regarding structural and seismic expansion joints please contact Schluter Systems at 1 800 472 4588 USA or 1 800 667 8746 Canada for proper installation guidelines Note regarding residential applications Due to the increased popularity of continuous tile installations e tile continuing from room to room on a given floor movement joints have become both increasingly important and increasingly difficult to provide For instance consider the residential installation shown in Figure 5 It is almost certain that the homeowner will resist the idea of placing movement joints across any of the rooms shown in the figure despite TCNA TTMAC and Schluter Systems guidelines However the need for movement joints in this installation is undeniable given the extended size of the field The question then becomes How does one provide the movement joints necessary to ensure a durable installation without c
15. barrier on crawl space floors according to regional building codes GYPSUM Floors Interior Ceramic or Stone Tile 9 WATERPROOFING Every substrate presents unique challenges Today s construction methods which include the use of lightweight moisture sensitive materials such as plywood OSB and gypsum concrete have made the installation of hard surface coverings particularly challenging If wood or gypsum concrete substrates are exposed to moisture the tile layer above can be damaged as a result Typical areas that require waterproofing include tub surrounds and showers However there are other commonly tiled areas that may through unexpected circumstances become exposed to significant amounts of water for example an overflowed toilet or ruptured dishwasher icemaker or washing machine lines which can result in flooding Waterproofing these floors can save an owner from replacing the tile assembly and substructure in the event of a leak DITRA HEAT installations can be made waterproof with minimal effort Since the matting is made of waterproof polypropylene the only extra step necessary is to seal the seams and floor wall connections This is easily accomplished by applying KERDI BAND to these areas using an unmodified thin set mortar The result is a waterproof installation that will not suffer damage in the event of an unexpected water leak KERDI DRAIN or KERDI LINE may be used to provide drainage in DITRA HEAT installa
16. joint with uniform width that is void of any mortar grout or other restraining materials that would render the joint ineffectual Surface Joints Surface joints must be placed within the tiled surface regardless of substrate conditions They provide for stress relief from movements in the tile field due to thermal and moisture expansion contraction and loading See figure 4 Expansion Joints Expansion joints permit both horizontal and vertical differential movements attributable to thermal and moisture expansion contraction by providing a complete separation for the full depth of the slab to allow for free movement between adjoining parts of a structure or abutting surfaces They are typically placed at columns walls and any other restraining surfaces Expansion joints must be continued through the tile covering The DITRA HEAT membrane is separated at expansion joints and the joint is continued through the tile covering using DILEX movement joint profiles The DITRA HEAT E HK heating cables must not cross expansion joints When DITRA HEAT is used as waterproofing the abutted sections must be covered with KERDI FLEX or KERDI BAND Cold Joints Cold construction joints occur where two successive placements of concrete meet True cold joints bond the new concrete to the old and do not allow movement However it takes extra care to accomplish this so they are usually designed to act as expansion or control contraction joints Cold joints
17. systems Uncoupling Tile has been successfully installed for thousands of years by incorporating an uncoupling layer or forgiving shear interface within the tile assembly DITRA HEAT provides uncoupling through its geometric configuration which allows for in plane movement that effectively neutralizes the differential movement stresses between the substrate and the tile thus eliminating the major cause of cracking and delaminating of the tiled surface Waterproofing DITRA HEAT provides reliable waterproofing Its polypropylene composition protects the substrate from moisture penetration which is particularly important in today s building environment where most substrates are moisture sensitive Vapor Management The free space on the underside of DITRA HEAT provides a route for excess moisture and vapor to escape from the substrate that could otherwise cause damage to the tile covering above Thus DITRA HEAT effectively manages moisture beneath the tile covering Support Load Distribution When placed on a solid foundation columns or pillars can support tremendous loads The same physical principle applies to DITRA HEAT installations Column like mortar structures are formed in and between the studs on the surface of the matting Loads are transferred from the tile covering through these column like mortar structures to the substrate Since DITRA HEAT is virtually incompressible within the tile assembly the advantages of uncoupl
18. the room for reference with future renovation work and troubleshooting The homeowner end user should retain these photos for their records Before the heating cable is removed from the spool conduct the first set of required tests and record values in the heating cable tests log page 26 If a break or damage is detected during the tests return the heating cable to the original place of purchase Thread the heating cable cold lead and remote sensors through a conduit from the base of the wall to the thermostat electrical box The heating cable cold lead must not be cut Mark where the cold hot splice will be placed cut the DITRA HEAT matting and insert the splice It may be necessary to temporarily secure the splice to the floor with thin set mortar or adhesive e g KERDI FIX or hot glue Once the heating cable cold lead and remote sensors are threaded to the thermostat electrical box install a metal protection plate at the base of the wall This will help prevent any damage from fasteners eg nails screws etc in the future Embed the heating cables between studs at a spacing of 3 studs 3 1 2 9 cm Closer spacing may result in overheating and damage to building structures A wider spacing may not provide sufficient power to warm the floor Notes e Make sure to leave space for inserting the floo
19. uncoupling are achieved without sacrificing point load distribution capabilities By addressing all of the challenges associated with today s fast lightweight construction methods DITRA HEAT provides a durable installation system for ceramic and stone tile over gypsum substrates DITRA HEAT combines the flexibility of loose heating cables with the ease of installation of mat systems Cables can be placed wherever heat is desired without creating height differences in the floor Self leveling compounds are not required to encapsulate the cables significantly reducing installation time and effort compared to uncoupling membranes over other electric floor warming systems DITRA HEAT is useful even in applications where hydronic radiant heating tubes are incorporated in gypsum concrete as there may be times when floor warming is desirable while radiant heating is not necessary DH G IS 15 Ceramic or stone tile Unmodified thin set mortar DITRA HEAT uncoupling membrane and heating cables Unmodified thin set mortar Gypsum concrete Floors Interior Ceramic or Stone Tile Gypsum concrete Areas of Application over gypsum concrete underlayment placed over structurally sound wood or concrete subfloors a interior dry or wet areas Limitations a minimum 2 x 2 60 mm x 50 mm tile Requirements a for wood substrates subfloor underlayment configuration according to detail DH W16 T DH W19 T or DH W24 T
20. 2 E Subfloor vi CT Underlayment i Total thickness Gap all panel edges 1 8 5 mm Plywood OSB underlayment Plywood OSB subfloor H 1 4 point of the joist spacing Abut underlayment E at 1 4 point of joist na typical a L Floor joists Fasteners penetrate total thickness of underlayment T h4 o i amp subfloor with minimal A penetration into joists LI As LI Ai x Typical wood SC He joist spacing LSA Le Plywood OSB Type and Fastener Schedule Guidelines Plywood OSB Plywood OSB Maximum On Center Fastener Spacing in mm Grades Thickness in mm Panel Edges Field Exposure 1 3 8 10 4 102 6 152 plugged face 1 2 13 4 102 6 152 plywood or OSB Greater than 1 2 13 6 152 6 152 The following guidelines must be followed when fastening underlayment panels 1 Use ring shank nails no staples or wood screws no drywall screws 2 Fasteners must pass through entire thickness of underlayment and subfloor panels with minimal penetration into joists See figure 2 FINAL WORD As stated previously Schluter Systems requires that any underlayment panel must have a minimum thickness of 3 8 10 mm When in doubt increase underlayment thickness 14 WOOD UNDERLAYMENT INSTALLATION Schluter DITRA HEA
21. 60 W 127 1363 9 7 DHE HK 120 102 336 9 ft 102 7 m 101 9 ees m 1290 W 12 7 136 3 10 7 Heating cable 240 V DHE HK 240 21 10 6 21 0 m 21 47 AO 270 W 127 1363 ical DHE HK 240 32 1058 62 2m eZ 10 Om 405 W EE dE DHE HK 240 53 Ee So OO 675 W 12 7 136 3 2 8 DHE HK 240 75 248 2 Tt 75 7 Mm O Ome 950 W 127 1363 4 0 DHE HK 240 129 425 8 ft 129 8 m eesi ZO in 1630 W 127 136 3 6 8 DHE HK 240 167 Ee ov oun 166 7 t 13 5 mM 2110 W 12 7 136 3 8 8 DHE HK 240 204 673 8 ft 205 4 m 2098m 189m 2580 W 12 7 136 3 10 7 DHE HK 240 269 888 0 ft 270 7 m 2608 6 20 0 im 3400 W E 14 2 Each heating cable includes a floor temperature sensor compatible with the DITRA HEAT E RS thermostat and features an approximately 7 ft 2 7 m long cold lead Heating cable repair kits are available Please contact Customer Service for more information Schluter DITRA HEAT E RS DITRA HEAT E RS are digital thermostats to control the DITRA HEAT E HK heating cables either 120 V or 240 V The thermostats feature a 5 mA built in ground fault circuit interrupter GFCI with indicator light The DITRA HEAT E RS thermostats have an electrical current limit of 16 amps A floor temperature sensor is included The programmable version features more than 250 pre set programs and anticipated start function The non programmable version features simple on off and a smart mode acts like a programmable thermostat by automatically lowering the te
22. DI BAND may De appropriate in cases where a break in the water line of an ice maker or dishwasher can damage pre existing moisture sensitive substrates and underlayments KERDI BAND floor wall connections are just as easily concealed with wood base as with tile KERDI BAND _ floor wall connections in dishwasher alcoves are parged with thin set mortar see page 10 vapor barrier on crawl space floors according to regional building codes certain moisture sensitive stones e g green marble or resin backed tiles may require special setting materials Consult stone supplier and Schluter Systems for more information Floors Interior Structural Plank Subfloor Areas of Application over structural plank subfloors a interior dry or wet areas Limitations a minimum 2 x 2 60 mm x 50 mm tile Requirements maximum spacing of joists is 24 670 mm o c double layer wood floor consisting of e minimum structural plank subfloor thickness 3 4 19 mm e minimum underlayment thickness 15 32 1 2 nom 13 mm Substrate Preparation verify that subfloor planks are properly fastened to framing members underlayment minimum 15 32 1 2 nom 13 mm thick Exposure 1 plugged face plywood or OSB with 1 8 8 mm gap between sheets see page 14 for underlayment installation guidelines a any leveling of the subfloor must be done prior to installing DITRA HEAT Movement Joints a DITRA HEAT does
23. F DESTRUCTION OR ANY LOSSES DUE TO STRUCTURAL FAILURE OR OTHER CAUSES UNRELATED TO THE PRODUCTS OR DELAYS OR ANY OTHER INCIDENTAL OR CONSEQUENTIAL DAMAGES THIS WARRANTY IS GIVEN IN LIEU OF ANY OTHER WARRANTY EXPRESSED OR IMPLIED THE REMEDIES CONTAINED HEREIN ARE THE ONLY REMEDIES AVAILABLE FOR BREACH OF THIS WARRANTY THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS SOME STATES AND PROVINCES DO NOT ALLOW DISCLAIMERS OR OTHER RESTRICTIONS OF IMPLIED WARRANTIES SO SOME OF THE ABOVE DISCLAIMERS MAY NOT APPLY TO YOU TRANSFERABILITY This Limited Warranty extends ONLY to the original end user defined as original intended owner and user of the property unit in which the installation is incorporated herein referred to as Owner and is not transferable or assignable unless approved in writing by the Technical Director or an Officer of Schluter Systems or otherwise prohibited by specific state or provincial law MODIFICATIONS TO WARRANTY No changes or modification of any terms or conditions of this warranty are allowed unless authorized by written agreement and signed by the Technical Director or an Officer of Schluter Systems EFFECTIVE DATE This warranty shall supersede and replace any and all prior oral or written warranties agreements or other such representations made by or on behalf of Schluter Systems relative to the Products or the application of the Products and shall apply to any installation occurring on or after April 1 2015
24. T membrane and heating cables Planning For access to the DITRA HEAT Calculation Sheet and DITRA HEAT Online Calculator see www schluter com Select DITRA HEAT membrane according to the size of the area to be tiled Select DITRA HEAT E HK heating cable according to the size of the area to be heated Be sure to measure accurately The heating cable CANNOT be cut to fit The allowable heated area is limited by the minimum required spacing from fixed elements such as e Walls or fixtures 3 75 mm e Heat sources baseboard heaters fireplaces forced air heating ducts etc 8 200 mm e Floor Drains 6 150 mm Two or more DITRA HEAT E HK heating cables can be connected and controlled by a single DITRA HEAT E RS thermostat if the total current is less than 16 amps The heating cable leads must be wired in parallel according to applicable electrical and building codes Multiple DITRA HEAT E HK heating cables over 16 amps cannot be connected to a single DITRA HEAT E RS thermostat Additional DITRA HEAT E RS thermostats must be used or a control system comprised of relays and low voltage thermostats may be substituted if the heating cables are in one room The system must still incorporate a floor temperature sensor and the circuit must be protected by a GFCI Preparation e The substrate must be clean even and load bearing Any leveling of the subfloor must be done prior to installing DITRA HEAT For wood substrates verify that pa
25. apabilities By addressing all of the challenges associated with today s fast lightweight construction methods DITRA HEAT provides a durable installation system for ceramic and stone tile over wood substrates DITRA HEAT combines the flexibility of loose heating cables with the ease of installation of mat systems Cables can be placed wherever heat is desired without creating height differences in the floor Self leveling compounds are not required to encapsulate the cables significantly reducing installation time and effort compared to uncoupling membranes over other electric floor warming systems DH W16 T 15 Ceramic or porcelain tile Unmodified thin set mortar DITRA HEAT uncoupling membrane and heating cables Latex p c mortar Single layer of plywood or OSB Joists I joists or trusses Floors Interior Ceramic or Porcelain Tile 16 406 mm o c joist spacing single layer OSB or plywood subfloor Areas of Application over any even and structurally sound OSB or plywood subfloor with 16 406 mm o c joist spacing a interior dry or wet areas Limitations a minimum 2 x 2 60 mm x 50 mm tile a for natural stone see detail DH W S page 6 and natural stone discussion page 23 Requirements a maximum spacing of joists I joists or floor trusses is 16 406 mm o c a minimum subfloor thickness 19 32 5 8 nom 16 mm tongue and groove with 1 8 3 mm gap between sheets Su
26. applications DITRA HEAT is sealed to the fleece laminated KERDI DRAIN bonding flange with a section of KERDI membrane using unmodified thin set mortar KERDI FIX is used to seal the section of KERDI to the stainless steel KERDI DRAIN bonding flange DITRA HEAT is sealed to the KERDI waterproofing collar on KERDI LINE using unmodified thin set mortar Thin set mortar per appropriate detail 10 WATERPROOFING Floors Interior MOVEMENT JOINTS Every substrate presents unique challenges DISCUSSION Movement joints are an integral part of any tile assembly The various components of a tile assembly tile mortar substrate etc have unique physical characteristics that affect their behavior Specifically these components will expand and contract at different rates according to each component s intrinsic physical properties with changes in moisture temperature and loading both dead and live loads This differential expansion contraction of attached components results in internal stresses Furthermore structures that restrain overall expansion of the tile field walls columns etc cause stress buildup within the system If the aforementioned movements are not accommodated through the use of movement joints in the tile field and at restraining structures the resulting stresses can cause cracking of the grout and tile and delamination of the tile from the substrate Thus movement joints are an essential component of any durable ti
27. bstrate Preparation verify that subfloor panels are properly fastened to framing members any leveling of the subfloor must be done prior to installing DITRA HEAT Movement Joints a DITRA HEAT does not eliminate the need for movement joints including perimeter joints within the tiled surface Movement joints must be installed in accordance with industry standards and norms see page 11 of this Handbook TCNA EJ171 and TTMAC 301 Mu 4 WOOD Floors Interior Ceramic or Porcelain Tile Setting and Grouting Materials a latex portland cement p c mortar ANSI A118 11 unmodified thin set mortar ANSI A118 1 a grout ANSI A118 3 A118 6 A118 7 A118 8 Setting and Grouting Specifications a tile ANSI A108 5 a grout ANSI A108 6 A108 9 A108 10 Other Considerations a tightly butted and or tented plywood or OSB seams must be addressed prior to installing DITRA HEAT vapor barrier on crawl space floors according to regional building codes a where a waterproof floor is required all DITRA HEAT seams and floor wall transitions must be sealed with KERDI BAND using unmodified thin set mortar see page 10 DH W19 T 15 Ceramic or porcelain tile Unmodified thin set mortar DITRA HEAT uncoupling membrane and heating cables Latex p c mortar Single layer of plywood or OSB Joists I joists or trusses DH W24 T 15 Ceramic or porcelain tile Unmodified thin set mortar DITRA
28. c floor heating cables DITRA HEAT integrates customizable electric floor warming with the functions associated with DITRA uncoupling waterproofing vapor management and support to ensure a long lasting installation Uncoupling and waterproofing membrane 1 4 5 5 mm Item No Hem Dimensions DH5 12M Roll S g il il s145 EE DH5 MA Sheet o S X2 7 80w A m x 08 m 08 ma U S Pat No 8 950 141 and U S DES PAT No D706459 Canada On Schluter Systems L P and other patents pending Schluter DITRA HEAT E HK DITRA HEAT E HK are twisted pair heating cables designed for integration with the DITRA HEAT uncoupling membrane in interior floor warming applications The cables can be installed without returning to the thermostat and produce virtually zero electromagnetic fields Item No Length Area Total Power Pa SE GE Heating cable 120 V DHE HK 120 16 52 9 ft 16 1 m eO 125 m 203 W 127 1963 dee DHE HK 120 27 88 2 ft 26 9 m AST w 23m 338 W 127 103 2 8 DHE HK 120 32 105 8 il 622m S28 1 EO AF 405 W 12 7 136 3 3 4 DHE HK 120 38 124 1 ft 37 6 m o SES Ae 475 W 127 1303 4 0 DHE HK 120 43 141 1 ft 43 0 m 42 7 Tt GO 540 W 12 7 136 3 4 5 DHE HK 120 64 212 9 ft 64 9 m 64 4 ft 6 0 m 815 W 12 7 136 3 6 8 DHE HK 120 83 275 5 ft 84 0 m oA N 1055 W 127 1303 8 8 DHE HK 120 92 303 0 ft 92 4 m Oli te Som 11
29. cementitious materials and is therefore not considered to be a defective condition and is not covered by this warranty It is the responsibility of the owner builder installer to ensure the suitability of all building materials and all associated building materials for the owner s intended use It is recommended that the owner consult with an experienced and professional installer This warranty is conditioned and will be considered null and void and Schluter Systems will have the right to refuse any claims if a the Products have been improperly stored or installed b any Schluter product comprising the system has been altered or otherwise modified in any way without the prior written authorization of Schluter Systems c the Products are subject to abusive or abnormal use lack of maintenance or use other than that for which the Products were manufactured and d the nameplate numbers have been removed or modified from any applicable parts wire and e the homeowner end user fails to return a copy of the completed heating cable tests log with the warranty registration card Homeowner end user s is responsible to return the warranty registration card with the logs which may be by mail or www schluter com registerwarranty It is AN INSTALLATION REQUIREMENT THAT the heating cable tests log be completed by the installer at time of installation and a copy returned with the registration card We recommend the original logs be retained by homeowner
30. covering which can cause weak and brittle materials to break or crack Engineering mechanics as well as field observations show that the location of maximum flexural stresses in the floor assembly is directly over the floor joists and at seams in the subfloor panels Therefore we recommend double layer wood floors when installing natural stone in order to increase the stiffness of the sheathing assembly and position underlayment seams away from the joists to minimize flexural stresses in the stone covering directly above the joists and at seams Refer to page 14 for underlayment installation guidelines For more information on the development of these guidelines please refer to the article titled Position of Underlayment to Prevent Cracked Tile and Grout on our website at www schluter com 5138 aspx NATURAL STONE 23 PRODUCT amp ORDERING INFO The ordering information for the Schluter DITRA HEAT and KERDI components outlined in this Handbook is located below For technical support Illustrated Price List or to receive additional information on our complete product line please call 800 472 4588 USA or 800 667 8746 Canada or visit our comprehensive website at www schluter com Schluter DITRA HEAT DITRA HEAT is a polypropylene membrane with a cut back stud structure and an anchoring fleece laminated to the underside The matting is 1 4 5 5 mm thick The stud structure is specifically designed to secure DITRA HEAIT E HK electri
31. d requires latex modified thin set mortar When bonding DITRA HEAT to particularly dry porous concrete with unmodified thin set mortar the slab should be moistened to saturate the concrete and help prevent premature drying of the mortar Excess or standing surface water must be removed prior to installation Additionally all mortars modified and unmodified have an acceptable temperature range that must be observed during application and curing THIN SET FACTS 21 TESTING amp CERTIFICATIONS Product Evaluation Schluter Systems is committed to providing reliable installation systems for ceramic and stone tile As part of this commitment we have invested considerable resources in testing our products and obtaining certifications where applicable to provide our customers and local code officials with relevant data that supports the efficacy of our systems All the testing referenced below was performed by independent laboratories Uncoupling and Support Load Distribution The method used to establish the overall performance of a tile assembly under loading is the ASTM C627 Standard Test Method for Evaluating Ceramic Floor Tile Installation Systems Using the Robinson Type Floor Tester The assembly is tested in cycles using a loaded revolving carriage Load wheel hardness and number of revolutions vary with each cycle Once a specified level of damage is exceeded the test is stopped The TCNA Handbook for Ceramic Glass and Stone Ti
32. d thin set mortars achieve higher strengths when cured in continually moist conditions QUESTION Can ceramic tile including porcelain tile be set on DITRA HEAT with latex modified thin set mortar ANSWER We DON T recommend it Here s why Latex modified mortars must air dry for the polymers to coalesce and form a hard film in order to gain strength When sandwiched between two impervious materials such as DITRA HEAT and ceramic tile including porcelain tile drying takes place very slowly through the open joints in the tile covering According to the TCNA Handbook for Ceramic Glass and Stone Tile Installation this drying period can fluctuate from 14 days to over 60 days depending on the geographic location the climatic conditions etc Therefore extended cure times would be required before grouting if using modified thin set mortars between DITRA HEAT and ceramic tile including porcelain tile If extended cure times were not observed the results could be unpredictable ADDITIONAL NOTES 25 years of field experience and testing by the Tile Council of North America TCNA support the efficacy of using unmodified thin set mortars to bond ceramic tile including porcelain tile to uncoupling membranes Remember the type of mortar used to apply DITRA HEAT depends on the type of substrate The mortar must bond to the substrate and mechanically anchor the fleece on the underside of the DITRA HEAT For example bonding DITRA HEAT to woo
33. e cable resistance and could lead to a fire Heating cables shall not be altered in the field If the installer or the user modifies the unit he will be held responsible for any damage resulting from this modification and the warranty and the product certification will be void The heating section of the cable must be entirely installed under the floor covering The installation is characterized as a Type C Embedded Floor Warming application In order to prevent a fire hazard do not install it anywhere else e g in a wall Do not run the heating cable under a wall from one room to another an individual cable must not heat more than one room Never install the heating cable under vanities bathtub platforms kitchen cabinets and islands or any other fixtures Excessive heat will build up in these confined spaces and may cause a fire Never use the heating cable for any purpose other than heating a floor INSIDE a building Always keep a 3 stud 8 1 2 9 cm spacing between cable runs A narrower spacing may cause a fire or damage the floor covering A wider spacing may not provide sufficient power to warm the floor Heating cables may not touch cross over or overlap one another Minimum spacing from walls or fixtures e g cabinets is 3 75 mm Minimum spacing from other heat sources baseboard heaters fireplaces forced air heating ducts etc is 8 200 mm Minimum spacing from any plumbing drain is 6 150 mm It is hel
34. end users RESOLUTION Upon return of the registration card with the heating cable logs and compliance with all the aforementioned conditions if the Products fail to meet this warranty then the owner s exclusive remedy and the sole obligation of Schluter Systems at its election shall be to a reinstall or replace the failed portion of the floor covering assembly or b pay an amount not to exceed the original square foot cost of the installation of the floor covering assembly verified to be defective Floor covering assembly is defined to include all DITRA HEAT materials e g matting and heating cables non reusable flooring surfaces and the appropriate setting and grouting materials Further due to conditions beyond the control of Schluter Systems e g color and shade availability discontinuation normal wear and tear Schluter Systems cannot guarantee or warrant an exact match to the specific tile stone or other flooring materials used in the installation In such events substantially similar materials may be substituted This warranty does not cover scratches dents corrosion or discoloration caused by excessive heat chemical cleaning products and abrasive agents This warranty does not cover the cost of disconnection or installation In the event that the registration card and or heating cable tests log is not completed and returned then the resolution for failure of the Products to meet this warranty shall be replaced with a twenty
35. es or exposed to direct sunlight or moisture 12 16 3 7 m 4 9 m in each direction a Place around the perimeter of any size floor and or against all restraining surfaces a Fields should be as square as possible The ratio between length and width should not exceed 1 1 5 MOVEMENT JOINTS 11 1 Schluter DILEX EKE 3 PERIMETER JOINT DRYWALL I A INCH CONSTRUCTED WITH LL SEAL BAND E ACANT TILE THIN SET MORTAR ff e acy C de CN e l lt wm ye Ss F E 3 LE wr pia LB ees pe Ze e Ee 12 MOVEMENT JOINTS Typical movement joint applications Perimeter Joints Perimeter joints are provided at the outer edges of any tile installation to accommodate movements attributable to changes in moisture temperature and loading See figures 1 2 and 3 If Schluter DILEX corner movement profiles will not be used Schluter Systems recommends the use of sill seal a compressible polyethylene gasket used to seal the gap between foundations and sill plates as a quality control measure when providing perimeter movement joints The sill seal band is placed against perimeter structures before any component of the tile assembly is installed e g DITRA HEAT additional underlayments including self leveling materials mortar beds etc See figures 2 and 3 After the tile is installed and grouted any excess sill seal material is cut away leaving a movement
36. five 25 year Limited warranty that each Schluter Heating Cable purchased shall be free from defects in material and workmanship effective on the date of the purchase by or for the original purchaser The warranty shall remain effective for a period of twenty five 25 years from the date said original purchase The maximum liability of the company is limited to the cost of the original Cable multiplied by the percentage of the warranty period remaining DISCLAIMER THERE ARE NO WARRANTIES BEYOND THIS EXPRESSED WARRANTY AS STATED ABOVE ALL OTHER WARRANTIES REPRESENTATIONS OR CONDITIONS EXPRESSED OR IMPLIED ARE DISCLAIMED AND EXCLUDED INCLUDING WARRANTIES REPRESENTATIONS OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARISING BY STATUTE OR OTHERWISE BY LAW OR FROM A COURSE OF DEALING OR USAGE OF TRADE SCHLUTER SYSTEMS EXCLUDES AND IN NO EVENT SHALL HAVE ANY LIABILITY FOR LOST PROFITS OR ANY OTHER INDIRECT SPECIAL INCIDENTAL PUNITIVE EXEMPLARY OR CONSEQUENTIAL DAMAGES ARISING OUT OF OR OTHERWISE CONNECTED TO FAILURE OF THE PRODUCTS OR FLOORING SYSTEM OF WHICH THEY ARE PART NOR MISUSE OF THE PRODUCTS OR FLOORING SYSTEM REGARDLESS OF ANY STRICT LIABILITY ACTIVE OR PASSIVE NEGLIGENCE OF SCHLUTER SYSTEMS AND REGARDLESS OF THE LEGAL THEORY CONTRACT OR TORT OR EXTRA CONTRACTUAL OR OTHER NOR FROM ACTS OF WAR TERRORISM OVERVOLTAGE FAULTY AND NEGLIGENT PENETRATION OF THE SYSTEM FIRES EXPLOSIONS ACTS OF GOD INTENTIONAL ACTS O
37. fluid consistency but still the mortar using a float screed trowel or exceed 75 lbs on the DITRA ROLLER shelf Slowly able to hold a notch using a 1 4 x 1 4 DITRA ROLLER making sure to observe move the roller from one end of the matting to the 6 mm x 6 mm square notched trowel the open time of the bonding mortar If the other slightly overlapping successive passes mortar skins over prior to matting installation remove and reapply ESTIMATED THIN SET COVERAGE To bond DITRA HEAT to the substrate Use one 50 Ib 22 68 kg bag of mortar per 100 ft 9 3 m To bond the tile to the DITRA HEAT using a 1 4 x 3 8 6 mm x 10 mm square or U notched trowel Use one 50 Ib 22 68 kg bag of mortar per 40 50 ft 3 7 4 6 m za Lift up a corner of the matting to neck Q Abut end and side sections of adjacent sheets To bond the tile to the DITRA HEAT using a 1 2 coverage Proper installation results in full Note Aligning the studs on the top of the x 1 2 13 mm x 13 mm square or U notched contact between the fleece webbing and matting during installation can help make 1 trowel Use one 50 Ib 22 68 kg bag of mortar the thin set mortar Note Coverage may subsequent heating cable installation easier per 30 40 ft 2 8 3 7 m vary with mortar consistency angle at which the trowel is held substrate flatness etc If full coverage is not achieved remove and reapply making sure to verify proper mortar c
38. housandth of an inch Schluter KERDI FLEX KERDI FLEX is a flexible polyethylene waterproofing strip used to seal movement joints over DITRA HEAT in specialty applications where large movements are expected e g over expansion joints Waterproofing strip for use above movement joints Item No Width Length Thickness FLEX 125 5M 5 125 mm 16 So 5m 12 mil FLEX 250 5M 10 250 mm 16 5 5m 12 mil FLEX 125 30 5 125 mm 98 5 30 m 12 mil FLEX 250 30 10 250 mm 98 5 30 m 12 mil Note 1 mil 1 one thousandth of an inch Schluter KERDI KERECK F KERDI KERECK F are preformed seamless corners made of KERDI for waterproofing inside and outside corners Waterproofing for corners Item No Thickness Packaging KERECK FI 2 4 mil 2 Inside corners KERECK FI 10 4 mil 10 Inside corners KERECK FA 2 4 mil 2 Outside corners KERECK FA 10 4 mil 10 Outside corners Note 1 mil 1 one thousandth of an inch Schluter KERDI FIX A Ba KERDI FIX is a single component sealing and bonding compound with a silane modified polymer base It is odor neutral it UV and weather resistant and contains no solvents KERDI FIX is elastomeric and bonds well to most materials such 7 A Zu as wood stone concrete metal glass and many plastics KERDI FIX is suitable for the bonding of KERDI waterproofing AM MB membrane to vertical sect
39. ing are achieved without sacrificing point load distribution capabilities Legend Schluter Systems written installation instructions shall have kk Essential precedence over referenced industry standard guidelines and kk Significant installation procedures insofar as referenced information may contain Helpful overlapping or conflicting requirements Type thickness and format of the ceramic or stone tile surface covering must be suitable for the intended application WOOD CONCRETE GYPSUM WATERPROOFING MOVEMENT JOINTS WOOD UNDERLAYMENT INSTALLATION THIN SET FACTS TESTING amp CERTIFICATIONS NATURAL STONE PRODUCT amp ORDERING INFO HEATING CABLE TESTS LOG WARRANTY NNO A LO 10 11 14 15 21 22 23 24 26 Eh Floors Interior 16 19 2 amp 24 inch o c joist spacing Floors Interior Natural Stone Tile Floors Interior Existing Vinyl Floors Interior Structural Plank Subfloor Floors Interior Ceramic or Stone Tile Floors Interior Ceramic or Stone Tile Floors Interior Ceramic or Stone Tile Placement guidelines and descriptions Installation guidelines Installation instructions Discussion of thin set mortar types to be used with Schluter DITRA HEAT Products evaluation Discussion of natural stone and single layer wood subfloors Heating cables must be installed by a qualified person in accordance with this handboo
40. ions Heating cables The DITRA HEAT E HK heating cables sets are certified or listed to the following standards and usage e CAN CSA C22 2 No 130 03 Requirements for Electrical Resistance Heating Cables and Heating Device Sets under usage markings GXW for general use G with a wet rating W but specifically X for embedded indoor floor warming applications e UL 1673 Electric Space Heating Cables for installation in poured masonry floors within enclosed structures e ANSI IEEE 515 1 2005 IEEE Standard for the Testing Design Installation and Maintenance of Electrical Resistance Heat Tracing for Commercial Applications for installation Type C embedded floor warming within enclosed structures Thermostat The DITRA HEAT E RS digital thermostats are certified or listed to the following standards e Certified to CSA C22 2 No 24 93 Reaffirmed 2003 Temperature Indicating and Regulating Equipment e Listed to UL 873 Temperature Indicating and Regulating Equipment 11 Edition containing revisions through and including April 18 2006 Membrane e ICC ES Report No ESR 2467 e ICC ES PMG Report No PMG 1204 Certifications and listings may be accessed e U S Pat No 8 950 141 and U S DES PAT No D706459 via our website at www schluter com Canada Schluter Systems L P and other patents pending 22 TESTING amp CERTIFICATIONS NATURAL STONE Discussion of natural stone and single layer wood subfloors
41. ions of floor wall transitions that will not accept a bond to unmodified thin set mortar cS WN Zei Sealing and bonding compound Color Codes j Item No Description KERDIFIX color Cartridge 9 81 oz 290 ml CA Se GR wnite Z Schluter DITRA ROLLER f Used to embed DITRA membranes in the bond coat during membrane installation The lightweight DITRA ROLLER f features a 14 1 2 87 cm wide roller and a shelf for placing 50 to 75 lbs of weight e g bag of thin set mortar or grout box of tiles etc Between uses it can be conveniently disassembled for transport and storage Used to embed uncoupling membranes in the bond coat Item No Width DIRO 14 1 2 37 cm PRODUCT amp ORDERING INFO 25 HEATING CABLE TESTS LOG Validation for warranty coverage Each heating cable is subject to factory quality control However damage to the cables may happen after the product leaves the factory In order to ensure that the cable quality remains unchanged throughout the installation process and for warranty purposes tests must be conducted while the cable is still on the spool and during two specific subsequent steps Measurements must be recorded in the table below and compared to initial measurements taken when the cable was on the spool in order to enable you to detect any changes related to the electrical property of the cable Any installation related cable damages are not covered by the warranty Homeowner e
42. k and with the National Electric Code USA or Canadian Electric Code Part I CAN as applicable All electrical connections must be made by a qualified electrician according to the electrical and building codes effective in your region All wood materials including OSB plywood and framing members are subject to expansion contraction bending and deflection as a result of changes in moisture content and loading Further these deformations fluctuate over the life of the building structure DITRA HEAT s uncoupling function protects the ceramic or stone tile covering from the aforementioned deformations by neutralizing the differential movement stresses between the wood structure and the tile thus eliminating the major cause of cracking and delaminating of the tiled surface Therefore DITRA HEAT can replace a second layer of plywood in most applications Since wood structures are sensitive to moisture DITRA HEAT s waterproofing function adds an essential element to the flooring assembly by providing simple effective and permanent moisture protection breathe and provides a route for any residual moisture in the wood substrate to escape Since DITRA HEAT is virtually incompressible within the tile assembly the advantages of uncoupling are achieved without ey J Wood continually absorbs and releases moisture The free space beneath the DITRA HEAT membrane allows the wood to a WS sacrificing point load distribution c
43. le Installation assigns performance levels to an assembly based on the number of cycles successfully completed The ratings include residential light moderate heavy and extra heavy in order of improving performance Report Number Substrate Joist Spacing Tile Rating Schluter DITRA HEAT TCNA 415 13 OSB 19 2 Orc 12 x 12 porcelain Extra Heavy TCNA 415 13 OSB 24 O C 12 x 12 carrara marble Light TTMAC UFT09 2013 Concrete N A 12 x 12 porcelain Moderate TCNA 415 13 Concrete N A 2 x 2 porcelain Light Assembly Notes 1 All plywood and OSB subfloors were 23 32 3 4 nom thick 11 32 6 8 nom thick OSB underlayment added for carrara marble test 2 DITRA HEAT bonded to OSB with modified thin set mortar ANSI A118 11 3 DITRA HEAT bonded to concrete with unmodified thin set mortar ANSI A118 1 4 Tile bonded to DITRA HEAT with unmodified thin set mortar ANSI A118 1 5 Polymer modified cement grout ANSI A118 7 The test results above demonstrate that DITRA HEAT performs extremely well under load while at the same time providing flexibility within the shear plane Waterproofing DITRA HEAT matting provides reliable waterproofing in interior applications The product has been found to meet or exceed the requirements of the American National Standard Specifications for Load Bearing Bonded Waterproof Membranes for Thin set Ceramic Tile and Dimension Stone Installation A118 10 Certificat
44. le assembly SOLUTIONS Movement joints must be incorporated within the tile field at doorsills and at transitions to walls and other restraining structures to allow movement of the assembly and prevent stresses that can damage the system Schluter Systems prefabricated movement joint profiles protect tile edges and prevent sound bridges and surface water penetration resulting in a permanent maintenance free installation The family of Schluter DILEX orefabricated movement profiles includes a variety of shapes sizes and materials to suit different applications Please see Schluter Systems Illustrated Price List and visit www schluter com for more detailed information on DILEX movement profiles TECHNICAL NOTES The Tile Council of North America TCNA and the Terrazzo Tile and Marble Association of Canada TTMAC provide guidelines EJ171 and 301Mu respectively for the placement and construction of movement joints in and around the tile field Schluter Systems accepts these guidelines However given the increased use of larger tiles smaller grout joints and lighter building materials which are more susceptible to movement Schluter Systems recommends that movement joints within the tile field be placed at more frequent intervals as indicated below Guidelines for the placement of movement joints a Applications without heating cables 16 20 4 9 m 6 1 m in each direction a Applications with heating cabl
45. mperature once per 24 hour period D Te e CA Digital thermostat with remote floor temperature sensor Non programmable Programmable Item No Description DHE RS BW Non programmable thermostat with floor temperature sensor in bright white DHE RS D BW Programmable thermostat with floor temperature sensor in bright white 24 PRODUCT amp ORDERING INFO Schluter DITRA HEAT E KIT The DITRA HEAT E KIT is an all inclusive package containing the DITRA HEAT uncoupling membrane heating cable and programmable thermostat Kit containing all necessary components Item No DHE K 120 40 DHE K 120 56 Matting 5 sheets 43 1 ft 4 0 m 7 sheets 60 3 ft 5 6 m Heating cable 88 3 26 7 ft 26 9 m 2 5 m 124 O0 37 5 ft 37 8 m 3 5 m Thermostat 1 white programmable 1 white programmable Schluter KERDI BAND KERDI BAND is a waterproofing strip used to seal butt joints and floor wall connections with the KERDI and DITRA membranes Waterproofing strip Item No Width Length Thickness KEBA 100 125 5M 5 725 mm E 4 mil KEBA 100 125 10M 5 125 mm So 10m 4 mil KEBA 100 185 5M 7 1 4 185 mm 16 5 5m 4 mil KEBA 100 250 5M 10 250 mm 16 5 5m 4 mil KEBA 100 125 5 125 mm 98 5 30m 4 mil KEBA 100 185 7 1 4 185 mm 98 5 30 m 4 mil KEBA 100 250 10 250 mm 98 5 30 m 4 mil Note 1 mil 1 one t
46. n on the two power leads varies significantly 10 or more from the value printed on the spool it either means that the cable has been damaged or that the measuring instrument is not set properly or that it is simply out of calibration The ohms measurement must be recorded in your heating cable tests log page 26 Test 2 Continuity between the braid and the two conductors The heating cable is protected by a ground braid An electrical insulator prevents any contact between the braid and the two conductors To make sure there is no contact between the braid and the two conductors you must perform a continuity test Using the continuity test buzzer logo function of your multimeter test your cable between the braid and one of the two power leads If there is no continuity if the test is successful the multimeter will display depending on the instrument used either OL for over load or I for infinity Otherwise if the test fails neither OL nor Il will be displayed and a warning tone will be heard The test result must be recorded in your heating cable tests log page 26 Test 3 Insulation resistance test This test is meant to detect very small breaks throughout the cable insulation These breaks often remain undetected during the continuity test since they are not necessarily short circuits between the conductor and the ground braid Even though they are small these breaks are likely to cause a c
47. nd clean vinyl a for wood substrates nail off floor with ring shank flooring nails every 4 102 mm o c fasteners must pass through entire thickness of assembly with minimal penetration into joists any leveling of the subfloor must be done prior to installing DITRA HEAT Movement Joints a DITRA HEAT does not eliminate the need for movement joints including perimeter joints within the tiled surface Movement joints must be installed in accordance with industry standards and norms see page 11 of this Handbook TCNA EJ171 and TTMAC 301 Mu Setting and Grouting Materials a Fast setting latex portland cement p c mortar ANSI A118 4 or A118 15 a Unmodified thin set mortar ANSI A118 1 a grout ANSI A118 3 A118 6 A118 7 A118 8 Setting and Grouting Specifications a tile ANSI A108 5 a grout ANSI A108 6 A108 9 A108 10 Other Considerations a DITRA HEAT is adhered to the vinyl flooring using a fast setting latex portland cement mortar suitable for bonding to vinyl As an alternative a suitable cement based embossing leveler or an appropriate latex modified thin set mortar can be used to skim coat the vinyl to provide a bonding surface When skim coat is cured DITRA HEAT is adhered to the skim coat using an unmodified thin set mortar See page 21 for discussion on latex modified thin set mortars sandwiched between two impervious layers a seaming DITRA HEAT including floor wall connections with KER
48. nd user must retain this heating cable tests log for warranty purposes Heating Cable Tests Log Project Date of installation Certified electrician Date of start up Identification Factory Value Before Installation After Cable Installation After Tile Installation Conductor Resistance Test Conductor and Ground Braid Continuity Test Infinity I or Overload OL Insulation Resistance Test Equal to or greater than 1 Gigaohms Floor Temperature Sensors Test Temperature Resistance C F Kohms 10 50 18 1 15 59 14 8 20 68 E 25 TT 10 0 30 86 ere 1 Gigaohms 1 G ohms 1000 M ohms 1000 Mega ohms 26 HEATING CABLE TESTS LOG Schliuter D TRA REAT 10 Year Limited Warranty COVERAGE AND CONDITIONS Subject to the conditions and limitations as stated hereinafter Schluter Systems warrants that the Schluter DITRA HEAT system the Products will meet all composition and performance criteria for a period of ten 10 years from the date of purchase only when the Products are used and installed in accordance with the terms and conditions of the Schluter DITRA HEAT Installation Handbook and industry standard guidelines that are not in conflict with the Handbook in effect at the time of installation Further efflorescence is considered to be a natural occurrence with
49. nels are properly fastened Tightly butted and or tented plywood or OSB seams must be addressed prior to installing DITRA HEAT If a plywood OSB underlayment is to be installed follow the Wood Underlayment guidelines on page 14 For vinyl substrates ensure that the structure beneath is sound and adequate and that the vinyl is well adhered Remove any wax and clean the surface For vinyl over wood structures nail off floor with ring shank flooring nails every 4 102 mm o c fasteners must pass through entire thickness of assembly with minimal penetration into joists For concrete substrates remove any waxy or oily films and curing compounds if present by mechanical scarification When bonding DITRA HEAT to particularly dry porous concrete the slab should be moistened to saturate the concrete and help prevent premature drying or skinning of the bond coat Excess or standing surface water must be removed prior to installation For gypsum substrates residual moisture in gypsum screed must be 2 0 or less before installing DITRA HEAT Follow gypsum manufacturer s directions for additional substrate preparation Membrane D Using a thin set mortar that is suitable for 2 Apply DITRA HEAT to the floor fleece When using the DITRA ROLLER place a weight the substrate apply the thin set mortar side down Solidly embed the matting into e g bags of mortar grout or box of tile not to mixed to a fairly
50. not eliminate the need for movement joints including perimeter joints within the tiled surface Movement joints must be installed in accordance with industry standards and norms see page 11 of this Handbook TCNA EJ171 and TTMAC 301 Mu Setting and Grouting Materials a latex portland cement p c mortar ANSI A118 11 a unmodified thin set mortar ANSI A118 1 a grout ANSI A118 3 A118 6 A118 7 A118 8 Setting and Grouting Specifications a tile ANSI A108 5 a grout ANSI A108 6 A108 9 A108 10 Other Considerations vapor barrier on crawl space floors according to regional building codes a where a waterproof floor is required all DITRA HEAT seams and floor wall transitions must be sealed with KERDI BAND using unmodified thin set mortar see page 10 certain moisture sensitive stones e g green marble or resin backed tiles may require special setting materials Consult stone supplier and Schluter Systems for more information WOOD Floors Interior 7 CONCRETE Every substrate presents unique challenges There are various challenges associated with the installation of hard surface coverings on concrete substrates To begin the coefficient of thermal expansion of concrete is close to twice that of ceramic tile Additionally tile contractors are often expected to install tile over young concrete concrete cured less than 28 days However rigid surface coverings installed over young concrete a
51. nstalled in accordance with industry standards and norms see page 11 of this Handbook TCNA EJ171 and TTMAC 301 Mu Setting and Grouting Materials a latex portland cement p c ANSI A118 11 unmodified thin set mortar ANSI A118 1 a grout ANSI A118 3 A118 6 A118 7 A118 8 mortar Setting and Grouting Specifications a tile ANSI A108 5 a grout ANSI A108 6 A108 9 A108 10 Other Considerations a tightly butted and or tented plywood or OSB seams must be addressed prior to installing DITRA HEAT vapor barrier on crawl space floors according to regional building codes a where a waterproof floor is required all DITRA HEAT seams and floor wall transitions must be sealed with KERDI BAND using unmodified thin set mortar see page 10 WOOD Floors Interior Ceramic or Porcelain Tile 5 DH W S 15 Natural stone tile Unmodified thin set mortar DITRA HEAT uncoupling membrane and heating cables Latex p c mortar Double layer of plywood or OSB Joists I joists or trusses 6 WOOD Floors Interior AALA kkk k k kk Floors Interior Natural Stone Tile Double layer of OSB or Plywood subfloor Areas of Application over any even and structurally sound double layer OSB or plywood floor interior dry or wet areas Limitations requires double layer wood floor regardless of joist spacing a minimum 2 x 2 60 mm x 50 mm tile Requirements a maximum spacing of joists
52. ompromising the aesthetic qualities of the continuous tile field The easiest way to accomplish this goal is to begin by providing movement joints at the perimeter of the installation Perimeter joints are absolutely necessary and do not interrupt the tile field The next step would be to place movement joints at the thresholds between rooms or where a tiled hallway meets a larger tiled room These locations are relatively inconspicuous and the lines formed by the movement joints are logical in that they reflect the natural perimeter of each room Finally determine if any other characteristics of the floor plan invite the placement of additional movement joints In this example the intersection of the nook area and kitchen family room may be a reasonable choice Figure 5 Schluter Systems understands that the tile setter must take into account the needs of his or her client in determining the placement of movement joints in a tile installation For example a client may not wish to interrupt a continuous tile field that soans multiple rooms However as indicated by the orange lines above there are ways to meet industry guidelines that will serve to provide the client with a d
53. onsistency and application INSTALLATION 15 Heating Cables Warning Before installing and operating this product the user and or installer must read understand and follow these instructions and keep them handy for future reference If these instructions are not followed the warranty will be considered null and void and the manufacturer deems no further responsibility for this product The following instructions must be adhered to in order to avoid personal injuries or property damages serious injuries and potentially fatal electric shocks This product must be installed by a qualified person in accordance with this installation handbook and with the Canadian Electric Code Part Canada or the National Electric Code U S as applicable All electric connections must be made by a qualified electrician according to the electrical and building codes effective in your region A dedicated circuit is required for each application Ground fault equipment protection e GFCI is required for each circuit included in the DITRA HEAT thermostats Never install a cable designed for a 120 V power source on a 240 208 V power source This cable must be grounded Mark the appropriate circuit breaker reference label indicating which branch circuit Supplies the circuit to the floor warming heating cable system De energize all power circuits before installation and servicing Very important Never CUT the heating cable This would change th
54. pful to plan the location of a buffer zone as it is not possible to predict where the heating cable will end The buffer zone is an area where heating is not essential typically behind a toilet or adjacent to a door opening This area allows for placement of excess heating cable Heating cable testing is required while the heating cable is on the spool and at two subsequent steps during installation to ensure cable quality and for warranty purposes A megohmmeter is required for the insulation resistance testing of the heating cables Never energize the cable while it is on the spool This would lead to overheating that could damage the cable and may cause a fire The minimum temperature at which the cable should be installed is 32 F 0 Avoid folding the heating cable on itself a radius of curvature less than 0 0625 inch 7 6 mm could damage its sheath The minimum installed bending radius of the heating cable is 0 5 inches 72 7 mm 16 INSTALLATION To avoid damaging the DITRA HEAT E HK heating cable spool due to handling we recommend turning the box over to remove the spool from the packaging box Then pick up the spool from underneath the heating cable coil but not by the cardboard washers Heating Cable Tests Test 1 Conductor resistance test In order to perform the resistance test you must set your multimeter for resistance measurement and take an ohms reading between the two power leads If the ohms reading take
55. r not recommended The challenges associated with gypsum based underlayments include the requirement of an extended drying period before installing tile and continued sensitivity to the reintroduction of moisture throughout the life of the installation In addition since the coefficient of thermal expansion of gypsum concrete is substantially greater than that of ceramic tile shear stresses caused by temperature fluctuations can result in delamination or cracking of the tile covering This is particularly important when gypsum concrete is used as a thermal mass for radiant heated floors With the increasing popularity of radiant heated floors which typically utilize gypsum concrete tile installers need a reliable installation system to address these issues DITRA HEAT s uncoupling function protects the ceramic or stone tile covering by neutralizing the differential movement stresses between the gypsum concrete substrate and the tile thus eliminating the major cause of cracking and delaminating of the tiled surface DITRA HEAT s waterproofing function prevents the reintroduction of moisture to gypsum concrete underlayments which if not prevented could significantly compromise performance of the underlayment and lead to damage of the tiled surface The configuration of the DITRA HEAT matting provides free space to accommodate vapor emissions from the gypsum Since DITRA HEAT is virtually incompressible within the tile assembly the advantages of
56. r temperature sensor s e Heating cables may not touch cross over or overlap one another e The maximum allowable length of a single run is 10 ft 3 m the cable must be turned or a u shaped jog created at this point see image above J Minimum spacing from e Walls or fixtures e g cabinets is 3 75 mm e Other heat sources baseboard heaters fireplaces forced air heating ducts etc is 8 200 mm e Plumbing drains is 6 150 mm Use care not to damage the cables during installation particularly before the cables are embedded in the matting 18 the wall Mark the sensor location on the DITRA HEAT and cut the matting to house the sensor It is recommended to temporarily remove the heating cable from the area while cutting the matting It may be necessary to temporarily secure the sensor to the floor with thin set mortar or adhesive e g KERDI FIX or hot glue Embed the sensor wire in the matting without overlapping or crossing the heating cable INSTALLATION Once the heating cable and floor temperature sensor installation is complete retest and record values in the heating cable tests log page 26 Waterproofing The following steps are required for waterproofing only Note While the heating cable is protected by the DITRA HEAT matting be careful when applying the mortar to not damage the cable with the notched trowel be e i i SE a a S SS
57. re susceptible to damage as a result of shrinkage during curing Pre stressed post tensioned concrete slabs are also commonplace in today s construction environment Although pre stressing is used to help control deflections in concrete structures these slabs are still subject to deformations caused by changes in moisture temperature and loading Many concrete slabs on or below grade are subject to moisture migration which can be problematic Furthermore these structures experience the same deformations as stated above DITRA HEAT s uncoupling function protects the ceramic or stone tile covering by neutralizing the differential movement stresses between the concrete substrate and the tile thus eliminating the major cause of cracking and delaminating of the tiled surface DITRA HEAT s waterproofing ability not only protects the substrate from harmful substances it also slows the drying of fresh concrete which reduces the chances of cracking and curling of the slab The configuration of the DITRA HEAT matting provides free space to accommodate vapor emissions from the concrete slab This allows the installation of DITRA HEAT and the tile covering as soon as the slab can be walked upon Vapor management is also essential for slabs subject to moisture migration Since DITRA HEAT is virtually incompressible within the tile assembly the advantages of uncoupling are achieved without sacrificing point load distribution capabilities By addres
58. sing all of the challenges associated with today s fast construction methods DITRA HEAT provides a durable installation system for ceramic and stone tile over concrete substrates DITRA HEAT combines the flexibility of loose heating cables with the ease of installation of mat systems Cables can be placed wherever heat is desired without creating height differences in the floor Self leveling compounds are not required to encapsulate the cables significantly reducing installation time and effort compared to uncoupling membranes over other electric floor warming systems DH C TS 15 Ceramic or stone tile Unmodified thin set mortar DITRA HEAT uncoupling membrane and heating cables Unmodified thin set mortar Concrete Floors Interior Ceramic or Stone Tile Concrete subfloor Areas of Application over any structurally sound and even concrete subfloor young concrete concrete cured less than 28 days aon or below grade concrete subject to moisture migration post tensioned or pre stressed concrete cracked concrete Limitations a minimum 2 x 2 60 mm x 50 mm tile concrete slabs subject to moisture migration must have all seams in DITRA HEAT sealed with KERDI BAND using unmodified thin set mortar any cracks in concrete subfloor must exhibit in plane movement only thin set tile assemblies including those incorporating DITRA HEAT cannot accommodate differential vertical displacement
59. tions Floors Interior Ceramic or Stone Tile DH WP 15 Areas of Application Other Considerations Tile or wood base over any even and structurally sound a seaming DITRA HEAT including floor wall Ceramic or stone tile substrate where waterproofing is desired connections with KERDI BAND may be appropriate in cases where a break in the water RONDEC line of an ice maker or dishwasher can damage Limitations DILEX EKE BEE pre existing moisture sensitive substrates and Unmodified thin set mortar Requirements underlayments KERDI BAND floor wall KERDI BAND a all seams in DITRA HEAT matting and Toon connections are just as easily concealed with wall transitions must be sealed with wood base as with tile KERDI BAND floor wall DITRA HEAT KERDI BAND using unmodified thin set connections in dishwasher alcoves are parged uncoupling membrane mortar Note KERDI BAND must lap with thin set mortar and heating cables DITRA HEAT at seams and at floor wall in some applications the vertical section of transitions by a minimum of 2 50 mm in the floor wall transition will not accept a bond order to maintain waterproof integrity to unmodified thin set mortar Connections to such elements can be achieved using KERDI FIX or suitable trowel applied waterproofing materials such as those that require atmospheric moisture to cure e g urethane sealant a KERDI DRAIN or KERDI LINE may be used to provide drainage in DITRA HEAT
60. to wait for the mortar making sure to observe the open time of the to cure Fill the matting with unmodified bonding mortar If the mortar skins over prior thin set mortar and comb additional mortar to tile installation remove and reapply over the matting using a trowel that is appropriate for the size of the tile Periodically remove and check a tile to ensure that full coverage is being attained Note Coverage may vary with mortar consistency angle at which the trowel is held substrate flatness etc If full coverage is not achieved remove and reapply making sure to verify proper mortar consistency and application For large format tiles e g 12 x 12 G05 mm x 305 mm and larger back buttering the tiles with a skim coat of thin set mortar is a useful way to help ensure proper coverage The skim coat can fill in the concave area on the back of the tile ceramic tiles are not perfectly flat and improve contact with the mortar combed on the substrate ESTIMATED THIN SET COVERAGE To bond DITRA HEAT to the substrate Use one 50 Ib 22 68 kg bag of mortar per 100 ft 9 3 m To bond the tile to the DITRA HEAT using a 1 4 x 3 8 6 mm x 10 mm square or U notched trowel Use one 50 Ib 22 68 kg bag of mortar per 40 50 ft 3 7 4 6 m To bond the tile to the DITRA HEAT using a 1 2 x 1 2 13 mm x 13 mm square or U notched trowel Use one 50 Ib 22 68 kg bag of mortar per 30 40 ft 2 8 3 7 m
61. urable installation that remains aesthetically pleasing MOVEMENT JOINTS 13 WOOD UNDERLAYMENT Plywood OSB underlayment installation guidelines DISCUSSION In some applications referenced in this Handbook adding a layer of plywood or OSB before installing DITRA HEAT and the ceramic or stone tile covering is required to reduce deflection and curvature of the sheathing between the joists INSTALLATION GUIDE Place underlayment panels Exposure 1 plugged face plywood or OSB with long dimension perpendicular to floor joists such that the following conditions are met 1 Abut all underlayment end joints at quarter points between joists Example Abut underlayment panels on either side of the joist centerline at 4 702 mm for 16 406 mm o c joists 5 127 mm for 19 2 488 mm o c joists or 6 152 mm for 24 610 mm o c joists See figures 1 amp 2 Note Underlayment end joints should be placed as far away from subfloor end joints as possible 2 Underlayment to overlap edge joints of subfloor by 1 2 of the width of the subfloor panel 24 670 mm At restraining surfaces overlap may be less than 24 670 mm when the subfloor panel is less than 48 7 2 m wide see figure 1 3 Gap underlayment panels 1 8 3 mm on all ends and edges and 1 4 6 mm at perimeter walls cabinetry or other restraining surfaces Figures 1 amp 2 Typical Subfloor Underlayment Detail Not to Scale Legend Figure 1 Figure
62. urrent leakage to ground Such a leakage is usually detected by the mandatory ground fault circuit interrupter GFCI thermostat with integrated GFCI or panel mount GFCl When a current leakage is detected the GFCI trips the circuit thus disabling the floor heating system In order to perform the insulation resistance test you must using a megohmeter Mohm logo take an insulation measurement between the braid and one of the two power leads Make sure the megohmeter range is set at 1000 V The insulation resistance measurement must be equal to or greater than 1 Gigaohms 1 Gigaohms 1 G ohms 1000 M ohms 1000 Mega ohms The insulation resistance measurement must be recorded in your heating cable tests log page 26 DITRA HEAT Thermostat Floor Temperature Sensor Testing Test the floor temperature sensors using a multimeter to verify accuracy of the sensors Set the multimeter for resistance at 10K Q 2 at room temperature and take a reading between the sensor leads The resistance will vary according to the temperature i e the colder the sensor the higher the resistance Compare the measured values with the table of expected values and record in the heating cable tests log on page 26 INSTALLATION 17 Installation It is recommended that the installation of the DITRA HEAT system is photographed e g heating cable layout floor temperature sensor placements transition splice location end splice location and wide view of

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