How do I fix insulating backer board to wooden floors ?
6mm – 50mm boards can be laid onto a suitable floor tile adhesive – NOT solvent based. Adhesive manufacturer’s advice should be sought. Boards are to be thoroughly bedded and laid in a chequer plate fashion, like bonding brickwork. When set, the boards are to be taped using a fibreglass scrim tape over the joints. 10mm – 50mm boards can be mechanically fixed to flat and level timber floors using 15 fixings per board (i.e. fixings at 30cm centres) with stainless steel screws placing a penny washer under the head, screwed down until the washer bites into the board surface. Joints to be taped, as described above. 6mm boards are NOT to be mechanically fixed. – Updated: September 19, 2005 10. How do do I waterproof the joints in insulating backer board – Top By laying a bead of silicone sealant along the edge of each board, so that when the adjacent board is butted up, the joint is made waterproof.
