Ceramic Tile Underlayment Requirements

The sheet vinyl must be clean and free of wax or other bond breakers.

Ceramic tile underlayment requirements.

The compound must be allowed to dry completely before proceeding with tile installation which can be anywhere from 24 hours to a few days depending on the brand. Subflooring requirements for tile floors to meet tca stiffness requirements floor framing should be no more than 16 inches on center with minimum 19 32 inch plywood subflooring. The substrate for tiles shorter than 15 inches must be so flat that it varies no more than 1 16 inch per foot according to the ceramic tile education foundation. The floor and subfloor combined should be at least 1 1 8 inches thick for proper support.

Upgrading to 23 32 inch plywood will stiffen the subfloor by almost 80 and provide a more solid feeling floor. The sheet vinyl must be single layer only and well attached. The subflooring should be level to 1 8 inch in 10 feet. The very shiny vinyl must be scuffed up or.

Natalia baran istock gettyimages how to fix a bad subfloor. In order to meet or exceed these requirements normally a troweled on patch or self leveling underlayment slu is used. If your existing floor is covered in cushioned vinyl or linoleum it s best to remove it but you can also cover it with an underlayment. The tcna gives the following requirements for using vinyl flooring as an underlayment for ceramic tile.

Starting at the eave 36 inch wide 914 mm strips of underlayment felt shall be applied overlapping successive sheets 19 inches 483 mm and fastened sufficiently in place. When installing 16 inch ceramic tile what is the minimum underlayment requirement. Most floor tile is adhered to the subfloor or underlayment with cement based thinset mortar. The underlayment for ceramic tiles is the final layer that lies directly beneath the surface flooring.

Tape over holes and. Starting at the eave a 19 inch 483 mm strip of underlayment shall be applied parallel with the eave and fastened sufficiently in place. It should not be. Or do i need additional layers of plywood.