How To Install Cement Backer Board For Tile Floor

The edges of the cement board should be no closer than 8 inches to the joints in the subflooring.

How to install cement backer board for tile floor.

Place the first cement board sheet lay the first sheet of cement board onto the mortar so the rough side of the board is facing up. Install the first sheet. Then spread thinset mortar with the flat side of a 1 4 in. Using the trowel spread adhesive and ridge it with the notched side of the trowel.

First changes in humidity make solid wood shrink swell and cup more than plywood. Cement board screws spaced every 4 in. Remember that it is best when joints in the backer board are not aligned with the joints in the subfloor. The backerboard should completely cover the subfloor joints.

Mix and apply the mortar. Notched trowel and use the notched edge to comb the mortar. Leave a 1 4 inch gap between the board and any adjacent walls. According to backer board manufacturers and tile setters installing backer board directly over an old solid wood subfloor is risky for a couple of reasons.

Use a chalk line to mark the dimension of the backer board sheets onto the floor. Precut and fit all the cement board and then lift all of the cement boards out. How to install cement backerboard for floor tile. Do a dry run and lay the backerboard down to fully cover the area you plan to tile.

Make a rough plan for the cement board sheet layout based on the area to be covered and the size of the cement board. Embed the cement board and screw it to the underlayment with special 1 1 4 in. Second the strength of wood boards isn t always consistent. Next place a sheet of the backer board over the wet adhesive.

I used to wait before overnight while letting the thinset cure but now i m starting to realizing that s almost an entire day wasted.