How To Level Plywood Bathroom Floor Before Installing Backer Board

Bc plywood over the old subfloor using construction adhesive and driving 1 1 4 in.

How to level plywood bathroom floor before installing backer board.

If the area is very large use a long straight 2 in 4 in 5 1 cm 10 2 cm board and set your level on top of it. Mix up and apply a modified thinset to a large enough area of the plywood subfloor to cover each piece of backer board using a 1 4 x 1 4 notched trowel. Spread the mortar to about 3 16 thickness. Remember that it is best when joints in the backer board are not aligned with the joints in the subfloor.

Using the trowel spread adhesive and ridge it with the notched side of the trowel. Floors are rarely perfectly level. Add a layer of 1 2 in. Ceramic tile makes a durable flooring material that resists moisture and heavy traffic if it s installed properly.

Add more mortar as necessary to fill sunken areas in. With the plywood in place install the backer board as you normally would. In order to level the subfloor to install tile the builder suggests 1 to put a paper on plywood and pour self leveler and skip hardibacker. If the floor is uneven lift up the board until it is level so you ll know how much flooring compound you ll need to even it out.

Use corrosion resistant nails or screws to attach the cement backer board to the plywood subfloor. Lay the backer board according to the manufacturer s instructions. 2 to pour self leveler on plywood directly and skip hardiback. Next place a sheet of the backer board over the wet adhesive.

Use a chalk line to mark the dimension of the backer board sheets onto the floor. Before installing ceramic tile on a plywood subfloor it s important to put down a layer of cement backer board first. Leave a 1 4 gap between the backer board and walls and 1 16 gap between the sheets of backer board. And 3 grind the hump of the plywood.