Tile Floor Subfloor Requirements

Ft plus any long term deflection due to the weight of the floor.

Tile floor subfloor requirements.

Plywood must be installed over an adequate subfloor and must be at least 1 1 8 thick when combined with the subfloor. Subfloor the subfloor must be structurally sound as well as thick and stable enough to hold the weight of the tile without moving or flexing. If needed sand the plywood down to level the subfloor. For example the maximum deflection for a joist span of 15 is 15 12 360 1 2.

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. To keep this type of flooring resilient against wear and tear you must install it correctly before it s used. Upgrading to 23 32 inch plywood will stiffen the subfloor by almost 80 and provide a more solid feeling floor.

Vinyl is one of the few types of floors that can be safely installed over concrete wood or other solid floors. The basement ceiling is finished in drywall so i do not have access from below. The floor joists are 2x10s spaced 24 on center and running lengthwise. The subfloor is 23 32 t g osb with inch lauan and sheet vinyl over top.

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 maximum span is 14 ft as a steel i beam breaks the floor into two sections of 14 ft. 2 prepare a wood subfloor for tile. Underlayment for ceramic tile floors.

Regardless of the material it must be at least 1 inch. Underlayment is the material placed on top of the subfloor that assists in the installation of the tile or other type of flooring. It is important to distinguish the components of a flooring system in order to understand the best installation. Divide the total span of the floor joists in inches by 360 to determine the maximum amount the floor can give in the middleunder a live load of 40 lb 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. Interior grade plywood and particleboard are not considered strong enough for a tile installation. The first step to proper installation is to get the subfloor in order.