Cement Board Over Vinyl Flooring

Watch today s homeowner with dan.

Cement board over vinyl flooring. For best results remove existing floor covering especially if it is in poor condition again reading the installation. Cement board screws spaced every 4 in. Apply adhesive to floor. Lay the cement backer board on the floor while the thin set is still wet.

If thickness is an issue however 1 4 inch thick backer board can be safely installed. Most vinyl tile floors are thin enough to support the extra thickness of both the backer board and the tile. Cement board over sheet vinyl i can see the ill effects that can happen when tiles are set directly over non cushioned sheet vinyl and especially cushioned sheet vinyl. The cement board is not smooth.

The floor is now smooth. If the subflooring is thin and lacks stiffness one remedy is to install a layer of new plywood subfloor over the resilient flooring followed by a layer of thin cement board. If removing the vinyl or linoleum before tiling appears to be an easy task it may be better to do this rather than tiling over it. Here is my concern.

Then spread thinset mortar with the flat side of a 1 4 in. Position cement backer board. If you lay vinyl over it the vinyl will conform to all the imperfections in the cement board and your vinyl flooring will appear dimpled not smooth. Whether you have wood sub flooring or a concrete slab follow these six steps and you can install tile flooring over vinyl.

Tape the seams lay cement board fiberglass mesh tape over all the seams it s sticky on one side. Embed the cement board and screw it to the underlayment with special 1 1 4 in. I have since decided to install vinyl sheet flooring. I do not see the ill effects with installing cbu over sheet vinyl except is is going to take days for the thinset under the cbu to dehydrate.

Notched trowel and use the notched edge to comb the mortar. Use a notched trowel to apply thin set adhesive to the vinyl flooring.