1. ing ill cause ing on serging w t and unravel S O zE O O fd S Z to spl serging around tread Tack or staple 1 2 inch in from the serg Stapling or tack STAIR TREAD INSTALLATION a D fa O S op cP D gt D x lt O u O a lt L Staple or Tack e On all four corners te baal gt ls