How To Install Cement Board On Plywood Floor

Before you install file flooring follow the directions above for fixing high spots and low spots in a wood or concrete subfloor.

How to install cement board on plywood floor.

Before we go any farther on how to install cement board i am going to talk about a very common mistake most people make. For ceramic tile floors the cement board usually rests on a plywood subfloor minimum 5 8 inch thick exterior grade plywood or osb if new ceramic tile is being laid on an existing floor the cement board can usually be laid right over the existing floor finish provided it is in good shape and the extra floor thickness is not a problem. How to install a cement backer board over a plywood subfloor in the bathroom. Never install new tiles over existing tiles or onto an unprotected wood or plywood floor.

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. This is a distinct advantage over plywood and drywall. Cement board is a type of underlayment that is now standard for most tile installations but particularly for floor tile. Make a final check with the level to be sure all the high and low spots are gone.

It has to be rock solid before you lay the 1 2 in. The primary benefit of cement board is that it doesn t break down or expand or warp if it gets wet. Learn how to install hardiebacker cement board on wooden floors and the appropriate materials and tools that you ll need for the job. If you have a concrete subfloor then you should not be contemplating installing cement board over it.

The 1 mistake most people make when installing cement board. Unlike wood or drywall sub surfaces cement backerboard will not rot warp or grow mold and mildew when exposed to water. Ceramic tile and natural stone tile installations require some type of a cement based surface for a long term. Then vacuum the floor with a wet dry vac or sweep it with a broom.

This guide will teach you how to properly lay cement backerboard and use mortar to secure and level your subfloor before installing tile. 5 steps to a sound ceramic floor. Installing cement board over a concrete subfloor. Then you attach the cement board with screws.