Tile Subfloor Requirements

1 6 mm in 0 3 m from the required plane when measured from the high points in the surface.

Tile subfloor requirements.

Regardless of the material it must be at least 1 inch thick. 6 mm in 3m and no more than 1 16 in. 0 38m the maximum allowable variation is no more than in. 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 difficulty is that tile can be installed over a number of substrates and each requires specific preparations to ensure a long lasting tile floor. Most commonly the maximum moisture condition is 3 0 pounds per 1 000 sq. Today for tiles with all edges shorter than 15 in. Underlayment is the material placed on top of the subfloor that assists in the installation of the tile or other type of flooring.

The subfloor must be structurally sound as well as thick and stable enough to hold the weight of the tile without moving or flexing. To test your subfloor for moisture you should always take a moisture reading. 2 prepare a wood subfloor for tile. Natalia baran istock gettyimages how to fix a bad subfloor.

Most floor tile is adhered to the subfloor or underlayment with cement based thinset mortar. To comply with the warranties each manufacturer has a different set of specifications.