Dinesen floors and floor heating
Contents
1. Heating coil Polystyrene Vapour barrier Polystyrene Sand u Figure 8 Gluing of Dinesen Floors The following instructions concern gluing of Dinesen Douglas and oak boards in full or random lengths with a max width of 500 mm Widths exceeding 300 mm must on the backside under the lower groove part have cut or planed an app 5 mm bevel to avoid glue being pressed into the tongue amp groove joint Gluing must not be combined with other installation methods and the boards should only be fixed to the sub floor with adhesive Do not apply adhesive to the tongue amp grooves on the long sides of the boards The humidity should be between 35 and 65 RH and should not exceed 50 RH during winter The ideal temperature is between 18 and 25 C Under the right preconditions the boards can be laid immediately after delivery and do not need time to acclimatize During the winter the boards ought to be in the room 24 48 hours before the installation Use Sika AcouBond System with Sika Layer 03 matt and SikaBond T52 FC glue Follow Sika instructions carefully with regard to e Climatic conditions e Grade evenness adhesive priming and moisture content of the substructure e Use of tools Page 14 Testing start and operation e Drying time of filler primer mastic etc e Mounting time for the adhesive e Conditions for floors with under floor heating In addition to this follow the other instruc2. R thickness thermal conductivity Examples of thermal resistance 28 mm Douglas 0 028 0 13 0 22 35 mm Douglas 01085 04132 10 27 30 mm Oak 0 030 0 17 0 18 As you will see from the above examples a thicker floor provides better insulation than a thin floor It may therefore be necessary to operate with a higher supply temperature to reach the desired surface temperature This does not have any significant implications with regard to energy consumption The dif ference in energy consumption between a tile floor and a solid 28 mm floor will be no more than 5 10 And the difference between a 28 mm and a 35 mm Douglas floor will amount to a few percentage points If the supply temperature is increased from 30 to 40 C the heat consumption will rise by only 6 Heat requirements When planning new houses a room temperature of 20 21 C is desirable for a normal winter period The insulation requirements have increased considerably through times which is reflected in the energy consumption of a regular home In new homes the heat consumption amounts to 35 45 W m while in older houses it may be as high as 45 75 W m It is therefore advisable to make a calculation of the actual heat requirement The surface temperature of a wooden floor must never exceed 27 C and the surface will therefore never emit more than 75 W m The surface temperature in a well insulated house will typically have to be around 2 degrees above the de
3. Dinesen Dinesen floors and floor heating February 2011 Dinesen floors and floor heating Page 3 Page 4 Contents Dinesen floors and floor heating 6 Preconditions Humidity 6 Characteristics of the wood 6 Heat requirements 7 Heat loss 8 Supply pipe temperature and surface temperature 8 Types of floor heating Heavy floor heating 9 Light floor heating 9 Electrical floor heating 9 Constructions Floor heating in concrete 10 Directly on concrete with heating coils 10 Chipboard on concrete with heating coils 10 Floor heating with heat emission plates 11 Heat emission plates on laths on top of joists 11 Heat emission plates on laths between joists 12 Self sustaining heat emission plates on joists 13 Floor heating chipboard on concrete 13 Thermisol floor heating plates 14 Gluing 14 Testings start and operation 15 FAQs about floor heating 16 Dinesen recommends 19 Advice 20 Contents Page 5 Dinesen floors and floor heating Floor heating has been used underneath Dinesen floors since 1995 and poses no problems under the right preconditions In principle floor heating water based is simply a plastic pipe built into the floor construction By sending hot water through the pipe the entire construction and thus the room is heated Depending on the insulation in the house floor heating may be all you need or alternatively you may need to supplement with r
4. Put insulation between the joists 45 x 45 mm planed fillets are fastened with an interval of approx 60 cm between the joists Sink the fillets to make the top side of the laths level with the joists Install a layer of planed 21 28 x 95 120 mm laths at an interval of approx 30 50 mm making room for the grooves on the heat emission plates Install the heat emission plates which are and fastened with nails on one side After the mounting of the heating coils lay out flooring cardboard 500 gr m and fix the floor planks to the joists with a screw Remember to observe the coils Floor plank Heat emission plate Cardboard Heating coil Lath Fillet Joist Insulation Vapour barrier Concrete Figure 4 Self sustaining heat emission plates on joists Install joists at an interval of approx 60 cm with insulation in between Install the self sustaining heat emission plates directly on top of the joists fasten them to the joists through the crossing steel bands with a nail After the mounting of the heating coils lay out flooring cardboard 500 gr m install the floor planks across the joists and fix with a screw Floor plank Cardboard Heat emission plate Heat emission plate Heating coil Joist Insulation Vapour barrier Concrete Figure 5 Page 12 Constructions Floor heating chipboard on joists A 22 mm floor heating chipboard can be installed on top of an insulated layer of joists at an interval
5. adiators heat recovery or a wood burning stove Floor heating underneath solid wooden floors is definitely possible To make the floor heating the only heat source the surface of the floor must be able to emit more heat than the total heat loss of the room In a new house where the insulation requirements of the Danish building code are adhered to this poses no problem but nevertheless you should always take the following points into consideration Have the heat loss calculated so the correct conditions are used especially with renovated or old buil dings Preconditions Humudity Whether you have floor heating or not concrete moisture will always be extremely damaging to the dry wooden floor It is therefore of the utmost importance to make sure that the concrete is dry and contains a maximum of 85 RH If the heating coils have been cast into the concrete the floor heating should be turned on after 30 days when the concrete has hardened Even during a hot summer the floor heating has to run for at least 1 month prior to the installation of the floor and always remember to measure the level of concrete moisture prior to installation If you do not start the floor heating the remaining moisture will emit when you turn on the heat which may cause severe damage to the floors Always make sure to lay out a vapour barrier on top of the dry concrete floor Atmospheric humidity 35 65 RH Concrete moisture Max 85 RH Moisture
6. d onto the sub floor and must never be glued on the long edges Why must the surface temperature not exceed 27 C A temperature above 27 C will not be pleasant When the temperature exceeds 27 C the humidity may drop to less than 30 RH which entails a risk of cracks and scratches If the house is sufficiently insulated a higher temperature will never become necessary Is it possible to reach a sufficiently high temperature through thick solid planks A room temperature of 20 C is easily reached It requires of course that the house is insulated in ac cordance with current building codes and that Dinesen Floor Heating Instructions are followed In older houses with insufficient insulation however supplementary heating sources may often be required Is the energy consumption higher for solid floors than for 15 mm engineered floors As wood has an insulating effect there will be a loss of heat up through the construction This means that the thicker a layer the heat has to pass through the higher the heat loss is A thick floor will therefore require a higher supply temperature to reach the same surface temperature as on a thinner floor This does not however imply a significantly higher energy consumption Does an increased supply temperature result in higher energy consumption The first time the water is warmed up to 45 C instead of 35 C it requires a little more energy but after wards it does not
7. e large concrete body needs to warm up before the heat can reach the wooden floor The room temperature is therefore a bit more difficult to control with heavy floor heating than with light floor heating The advantage however is that the set up is simple and that the floor heating can be used to dry the concrete floor Heavy floor heating is installed by a mason and a plumber Light floor heating Light floor heating is built up with aluminium heat emission plates where the heating coils are laid into bent rails The heat emission plates are placed right beneath the wooden floor and as aluminium is a per fect thermal conductor the heat is distributed fast to the entire surface of the floor Aluminium responds quickly to changes in the heat demand and therefore the room temperature will be experienced as more even and pleasant than with heavy floor heating The set up is a bit more complicated but provides a more pleasant floor to walk on as the sub floor is most often a joist construction Light floor heating is installed by a carpenter and a plumber Electrical floor heating Electrical floor heating is typically built up with heat cables distributed in a joist construction As with the other types of floor heating the surface temperature cannot exceed 27 C The use of electrical heating is not as common as the other types of floor heating which is mostly due to the price of electricity For a summer cottage electrical flo
8. ectors along tall windows reaching down to floor level Convectors can also be used for heating the room quickly and as the convector grids can be made in the same wood as the floor they will even add a beautiful architectural feature to the room The number of exterior walls in a room influences the heat loss significantly The more exterior walls the room has the higher the heat loss is Be particularly observant with regard to small buildings with 3 exterior walls and large windows as the size of the heat emitting floor is also significant for heating up the room Kitchen elements and cupboards etc reduce the area Carpets mats etc will also reduce heat emission and the temperature underneath carpets may very well exceed the 27 C mentioned earlier Small rooms may therefore be more difficult to heat up than larger rooms Rooms with high ceilings or which are open to the ridge may also have a high heat loss Supply temperature and surface temperature The supply temperature depends on the required output and the chosen floor type Normally the supply temperature will be in the range of 30 to 45 C and should not exceed 50 C The supply temperature only has a modest influence on the heat consumption Raising the temperature from 30 to 45 C will only increase heat consumption by 6 as it is the difference between supply and return temperature that has an impact on the heat consumption It is only slightly more expensive to heat up a thick p
9. have any effect This is due to the fact that energy consumption only depends on the difference in the temperature between supply water and return water Does floor heating have to run during the summer As floor heating is controlled by a thermostat the heat is only turned on as required It will therefore hardly be an extra expense to let the floor heating run If the concrete floor is insufficiently insulated you may experience that the concrete absorbs moisture during the summer if the floor heating is turned off and this may damage the floor But if the construction meets the requirements turning off the heat will have no effect However remember to start the floor heating up slowly over a few days FAQs about floor heating Page 17 Why must there be no air between the floor and the floor heating Air is a poor thermal conductor Therefore there should be no air between the floor heating and the wooden floor For the same reason you should always lay out flooring cardboard 500 gr m on top of the heat emission plates Air underneath the planks may make it impossible to reach a sufficiently high surface temperature In addition the air underneath the planks may become extremely dry which may impoverish and thus damage the floor Why is it important to start up the floor heating correctly The wood needs time to slowly adjust to the temperature changes If the floor is warmed up too quickly the planks may cu
10. in tier of beams Max 10 12 Moisture in joists Max 10 12 Moisture in chipboards Max 8 10 Vapour barrier Minimum 0 20 mm PE foil Characteristics of the wood Wood is a hygroscopic material which absorbs and emits moisture from the surrounding room Upon delivery Dinesen floors have been dried to a moisture content of 8 10 which corresponds to a relative humidity of 40 50 Page 6 Preconditions If the level of humidity drops the wood will emit moisture and shrink across resulting in contraction cracks The higher the surface temperature is the lower the humidity is right above the floors and the more the wood shrinks You should therefore always aim for a humidity level above 35 RH Cracks will always appear during the winter and during this stage the floor will have the most beautiful appearance To avoid the low humidity impoverishing the floors they can advantageously be treated with lye and oil The material s ability to conduct heat is called thermal conductivity 2 w m k With regard to wooden floors the thermal conductivity depends on the density of the wood kg m Therefore Oak will display a better thermal conductivity than Douglas Oak onim Douglas 0 13 The insulation or thermal resistance of a material is calculated on the basis of the thickness of the mate rial divided by its thermal conductivity The thermal resistance factor expresses the insulation ability and is referred to as R
11. lank floor than a thin engineered floor but it requires a higher supply temperature to ensure the desired surface tempe rature The surface temperature of a wooden floor must not exceed 27 C as a higher temperature may damage the floor The room temperature is controlled by thermostats in all rooms Thermostats will open or close for the supply of heat to regulate excess heat from people sun lights etc The thermostats are installed on interior walls 1 5 m above floor level and must be installed away from sunlight Room thermostats are available with or without a wire Page 8 Preconditions Types of floor heating Floor heating is normally water based and a distinction is made between heavy floor heating with heating coils in concrete and light floor heating with heating coils in heat emission plates Electrical floor heating is not as commonly used Heavy floor heating Heavy floor heating is heating coils cast into concrete where the concrete distributes the heat to the entire surface of the floor The concrete has a good thermal conductivity but the problem is that the con crete accumulates a lot of heat and therefore responds very slowly When a change occurs in the heat supply on account of for example sunlight or several guests in the room the concrete will still be warm a long time after the thermostat has turned off the heat supply When the need for heat occurs again the heating period will also be quite long as th
12. n plates is clearly the best possible solution Partly because this construc tion responds very fast but also because the floor is more pleasant to walk on It is a little more expen sive but the convenience factor weighs heavier Heat emission plates on laths on top of joists The planks must be laid in the same direction as the joists The planks should always be installed in the longitudinal direction of the house Therefore this solution also requires that the joists are installed in the longitudinal direction of the house in order to be able to install the laths crosswise Joists are installed at an interval of approx 60 cm with insulation in between On top of these install a layer of planed 21 28 x 95 120 mm laths at an interval of approx 30 mm making room for the grooves on the heat emission plates Install the heat emission plates which are fastened with nails on one side After the mounting of the heating coils lay out the flooring cardboard and fix the floor planks to the laths with screws Remem ber to observe the coils Floor plank es Cardboard SSAA SSS SSS Fu Heat emission plate EO Lath Heating coil Joist aa Vapour barrier Jeg aa P ae ae isi ag os O Concrete Figure 3 Constructions Page 11 Heat emission plates on laths between joists Install the floor planks across the joists This solution is applicable for a tier of beams or a new layer of joists with an interval of approx 60 cm
13. of max 60 cm Grooves have been prepared in the chipboard for the heat plates and 16 or 17 mm heating coils Lay out flooring cardboard 500 gr m and fasten the floor planks to the chipboard with a screw Remember to observe the coils MEER u O Figure 6 Floor plank Cardboard Heat emission plate Heating coil Floor heating chipboard Joist Vapour barrier Concrete Floor heating chipboard on concrete On a dry and level concrete floor lay out a 22 mm floor heating chipboard on top of a minimum 0 20 mm vapour barrier with 20 cm taped overlay Lay out floor cardboard 500 gr m and fasten the floor planks to the chipboard with a screw Remember to observe the coils Figure 7 Floor plank Cardboard Heat emission plate Heating coil Floor heating chipboard Vapour barrier Concrete Constructions Page 13 Thermisol floor heating plates Thermisol offers a floor heating system where polystyrene is used to build up a layer of insulation directly on top of the levelled sand layer Lay out a minimum of 25 cm polystyrene On top of this lay out a vapour barrier and a layer of 50 x 50 mm joists per 60 cm In between the joists lay out a layer of 25 mm polystyrene and then 25 mm Thermisol heat plates After the mounting of the heating coils lay out floor ing cardboard 500 gr m and fasten the floor planks to the joists with a screw Floor plank Cardboard SESS SSSA SSS Joist Heat plate
14. oor is relatively hard to walk on and that it increases the risk of the planks curving In addition the direct fastening on the substructure requires that you know exactly where the coils are to avoid screwing into them Screwing in concrete is more time consuming than other types of fastening Floor plank Cardboard Vapour barrier a eee Concrete Sr oR a Heating coil Figure 1 Chipboard on concrete with heating coils Place a vapour barrier of minimum 0 20 mm PE foil with minimum 20 cm taped overlap on top of the concrete The vapour barrier must be strong enough to withstand irregularities in the concrete Place a 22 mm chipboard on the entire floor area The chipboards are placed transverse to the room allowing the floor planks to be installed lengthwise In addition put out a layer of flooring cardboard 500 gr m or a similar sound absorbing layer Screw the planks with secretly or plug them from above The advantage here is that the fixing is very easy Due to the thick layer of wood the supply temperature must be raised a little but this will only slightly influence the heat consumption This solution effectively separates the concrete from the wood construction Floor plank wo Cardboard SSL LLL LESS OO LL EINS Chipboard 0 Vapour barrier a ee A y Concrete CJ o o A ii Figure 2 Page 10 Constructions Floor heating with heat emission plates Floor heating on heat emissio
15. ops to 30 RH the wood will settle at a moisture content of 6 and thus shrink Floor heating will not on its own cause major shrinking The higher the surface temperature is the larger the contraction cracks are One has to expect that the planks will shrink approx 1 in the width Will the planks curve more with floor heating The planks will curve a little as the seasons change This is the nature of the wood and will occur regard less of floor heating and it has no significance More severe curving will only occur if the house has moisture problems or if moisture in the construction was not removed prior to the installation of the floor Will the floor creak more with floor heating If temperature and humidity recommendations are adhered to the floors will not creak because of floor heating Most often creaking occurs because of wet joists too large intervals between the joists or too poor wedges Large differences in temperature or humidity may however result in transient creaking Does floor heating require a larger distance between wall and floor The distance to walls pipe feedthroughs etc must be sufficient to allow for expansions occurring when the wood absorbs moist during the summer The expansion does not depend on the floor heating and thus the recommended 10 15 mm will suffice Page 16 FAQs about floor heating Can the floors be laid floating No Dinesen floors must always be screwe
16. or heating is hardly recommendable unless you let the floor heating add a basic level of warmth to the house and then let the radiators take over for the last few degrees Floor heating should preferably run constantly during the heating season and therefore electrical heating is not suitable for a start via a phone call on the way to the summer cottage Electrical floor heating is installed by a carpenter and an electrician Types of floor heating Page 9 Constructions Floor heating in concrete The heating coils are tied to an armouring grid and cast into 10 cm of concrete on top of the insulation The set up is simple and only requires that the coils are tied to the grid and that the surface of the concrete floor is levelled off and deviates no more than 2 mm measured across 2 meters of straightedge Concrete humidity must not exceed 85 RH and remember to insulate in accordance with local Building Codes Directly on concrete with heating pipes Place a vapour barrier of minimum 0 20 mm PE foil with minimum 20 cm taped overlap on top of the concrete The vapour barrier must be strong enough to withstand irregularities in the concrete In addi tion put out a layer of flooring cardboard 500 gr m or a similar sound absorbing layer The floor planks are fastened directly onto the concrete using a screw and a dowel It is important to push the planks well into the substructure The disadvantage of this method is that the fl
17. rve This procedure has to be followed both for the initial start up and for later start ups when the heating season starts Why do you recommend lye and oil as surface treatment The lye opens up the grains in the wood making it easier for the oil to penetrate the floor The oil forms a membrane on top of the floor which makes it easier to avoid impoverishment of the wood Is lye and soap not an option Lye and soap is an option but requires a higher degree of attention to the floor and more frequent washing Soap may more easily result in small cracks in the surface of the wood caused by drying What is the impact of the room temperature on the energy consumption If the room temperature is lowered from 22 C to 21 C you can save approx 10 in heating expenses Page 18 FAQs about floor heating Dinesen recommends e Use light floor heating with heat emission plates This solution has the shortest reaction time and is easily controlled e The house must conform to local building codes and U values e Low convectors in front of tall windows reaching down to floor level e Start up the floor heating slowly Dinesen recommends Page 19 Instructions If you need further advice please contact Dinesen Floors at 45 7455 2140 where you can also order and buy the Dinesen range of maintenance products for wooden floors Dinesen Klovtoftevej 2 Jels DK 6630 Redding T 45 7455 2140 info dinesen com
18. sired room temperature Obviously the poorer the insulation of the house is the higher the surface temperature needs to be Preconditions Page 7 Heat loss If the house is not insulated sufficiently there may be days where you will be unable to reach the desired room temperature using only floor heating The heat loss is significant through floors walls ceilings and windows The Danish Building Code lays down requirements with regard to the insulating ability the so called U value these requirements must be adhered to The U value for terrain decks with floor heating cannot exceed 0 12 This requires insulation with no less than 250 mm polystyrene The U value for heat loss through the foundation cannot exceed 0 15 when floor heating is installed Heat loss through the foundation is particularly significant with regard to heat consumption Remember to also consider ther mal bridges and leakages The Danish Building Code also lays down U values for exterior walls ceilings windows exterior doors etc Heat loss through windows is regardless of type of glass far higher than the loss through walls and the size of the window will therefore greatly influence the overall heat loss Please note that the position of the windows with regard to corners of the world open fields or the ocean may result in even higher heat loss and cold air accumulation from windows can also have a great im pact This should however be countered by conv
19. the pipes and the thermostats before the facility is taken into use Furthermore the user must be equipped with a user s manual and be thoroughly instructed in the use of the facility Start up the floor heating slowly During the first week the supply temperature must not exceed 25 C it can thereafter be increased by 5 C every other day until the desired surface temperature has been reached The planks will curve if the supply temperature is raised too rapidly You often choose to let the floor heating facility run all year round as it is controlled by thermo stats and therefore only uses heat when the thermostats set in FAQs about floor heating Page 15 FAQs about floor heating Will floor heating result in cracks and damages If the humidity is kept between 30 and 60 RF floor heating will not cause cracks etc If the surface temperature of the floor exceeds 27 C the humidity will fall below 30 this may impoverish the floor and cause cracks Low humidity and insufficient maintenance may cause cracks and flaws Will contraction cracks increase in size with floor heating Wood will always attempt to find equilibrium in humidity conditioned by the surrounding air Dinesen floors are dried to a moisture content of 8 10 and will regardless of floor heating shrink during the winter when the humidity is low With an average of 40 45 RH in the room the wood will settle at a moisture content of 8 If the humidity dr
20. tions in Dinesen s instructions For all substructures Sika requirements on moisture content must be followed For substructures of concrete cement the moisture content must not exceed 85 RH and Sika Primer MB must be used For substructures of anhydrite the moisture content must not exceed 65 RH and Sika Primer MB must not be used Contact Sika for further info For substructures of concrete cement anhydrite with embedded heating coils the under floor heating must have been used for minimum 1 month prior to gluing For gluing on other substructures e g chipboard plasterboard ceramic tiles etc please contact Sika Concerning floors with under floor heating the heat must be turned of at least 24 hours before gluing Do not turn on the heat until 7 days after the floor has been glued Turn up the heat slowly To ensure sufficient pressure across the entire floor surface and when work ceases for the day place 8 10 kg sand bags buckets with sand or the like on top of the boards Distribute evenly with approx 1 load per m until the adhesive has hardened Particularly important are the areas along the edges of the floor and the last installed rows Do not walk on the floor before the adhesive has hardened a process which normally takes 24 hours Sanding and finishing should not be performed until 48 hours after the floor has been glued Testing start and operation It is important that a plumber has pressure tested the facility checked
21. www dinesen com Advice about floors installation and maintenance Floor heating water based Uponor 45 4345 3797 44 0 1455 550355 www uponor co uk Chairmats Fraster 45 8788 2244 Dinesen Instructions 01 02 03 04 05 06 Dinesen installation instructions for Douglas floors in full lengths Dinesen installation instructions for Douglas floors in random lengths Dinesen installation instructions for oak floors in random lengths Dinesen humidity instructions Finishing and caring for Dinesen floors Dinesen floors and floor heating Video instructions sanding finishing caring www video dinesen com Dinesen s instructions are based on Danish building codes and regulations reservations are therefore made for national code of practice Other products and construction parts require the knowledge and insight of a specialist Note that guidance besides our own product is beyond our service Reservations are made for printing errors Page 20 Advice
Download Pdf Manuals
Related Search