How To Lay Backer Board For Floor Tile

Spread the mortar to about 3 16 thickness.

How to lay backer board for floor tile.

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. Add more mortar as necessary to fill sunken areas in. Installations for floor tile and other horizontal surfaces like countertops require an extra step of applying thin set tile adhesive to the wood subfloor before laying down the cement board sheets. Never install new tiles over existing tiles or onto an unprotected wood or plywood floor.

I m laying 1 2 cement board over ply and there s 1 5 2 trench around the perimeter of the ply old bathroom in a bar trench depth varies from 1 2 to 1 5 and the cement board will lay over it. 5 lay your tiling board. The backer board comes in different sizes and you will pick the right one depending on the type of floor you are installing. Floor tiles should be installed over smooth flat surfaces.

Cutting fastening and taping and mudding. I have 3 questions. Using a notched trowel apply a leveling bed of thinset mortar over the subfloor and embed the backer board sheets into the adhesive. Whenever you re laying tile on a wood subfloor you need to first install cement backerboard to prevent leaks and water damage.

Unlike wood or drywall sub surfaces cement backerboard will not rot warp or grow mold and mildew when exposed to water. Installing backer board involves three main steps. Whichever backing board you decide to go for you ll need to measure it and cut it to size to ensure it fits the floor area you re planning to cover. It s best to start in an open corner and work your way across the room cutting the more awkward pieces of board last to fit the opposite wall as you go.

Lay the backer board according to the manufacturer s instructions. Second the strength of wood boards isn t always consistent. Can i fill the trench with thinset when i m thinsetting the board on or does it need to be done in advance of that.