Tile Subfloor Requirements

Underlayment is the material placed on top of the subfloor that assists in the installation of the tile or other type of flooring.

Tile subfloor requirements.

6 mm in 3m and no more than 1 16 in. The subfloor must be structurally sound as well as thick and stable enough to hold the weight of the tile without moving or flexing. Per 24 hours when tested with the rubber manufacturers association test. Natalia baran istock gettyimages how to fix a bad subfloor.

The subfloor must be able to hold the weight of the tile and preparation materials required to complete the installation. 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. To determine the requirements for a tile subfloor i partnered with jim and rich from diamond tile located here in maryland.

Regardless of the material it must be at least 1 inch thick. Most commonly the maximum moisture condition is 3 0 pounds per 1 000 sq. 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. 0 38m the maximum allowable variation is no more than in.

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. To test your subfloor for moisture you should always take a moisture reading.