Floor Leveler Over Cement Board

Drywall screws spaced every 6 in.
Floor leveler over cement board. Installing cement board over a concrete subfloor. If you have a concrete subfloor then you should not be contemplating installing cement board over it. I know it seems like a smooth surface and it seems like it may fix some of the issues with the concrete floor but don t do it. As long as the subfloor is 3 4 in.
Self leveling underlayment products can be used on concrete floors wood subfloors that are uneven but still in decent shape and even over ceramic tile floors eliminating the task of tearing. I d like to install slate tiles over a pre existing plywood floor. Cement boards that some in sheets. The preparation of the sub floor will be different depending on the type of sub floor you want to level.
The plywood floor is 3 4 and sits on joists. It can be used indoors and outdoors. Tongue and groove material screw the underlayment down right through the vinyl with 1 1 4 in. My plan was to fill it with self leveling compound before installing the cement backerboard and then the tiles.
It is important for the self leveling compound to properly bond with the subfloor so preparation is the key. Vinyl flooring glued over 1 4 in. You can apply self leveling compound directly to hardibacker cement board or any other approved tile setting materials. Concrete leveler achieves high 24 hour strength and can be covered with finished flooring in 4 to 16 hours at 70 degree f 21 degree c depending on the flooring type.
Levellite self leveling underlayment helps level floors prior to levellite self leveling underlayment helps level floors prior to the installation of ceramic tile natural stone resilient flooring carpet wood and other floor coverings. Thick cement board instead of the usual 1 2 in. In addition you could core holes staggered across the board adhesive will lock boards in position you may also need to weight boards until adhesive sets. This quick setting underlayment can be applied to 2 in.