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.

Tile subfloor requirements. The subfloor must be structurally sound as well as thick and stable enough to hold the weight of the tile without moving or flexing. Upgrading to 23 32 inch plywood will stiffen the subfloor by almost 80 and provide a more solid feeling floor. Natalia baran istock gettyimages how to fix a bad subfloor. For example the maximum deflection for a joist span of 15 is 15 12 360 1 2.

Underlayment is the material placed on top of the subfloor that assists in the installation of the tile or other type of flooring. If moisture levels are too high and you don t have sufficient time to allow the area to dry out naturally then be sure to install a surface damp proof membrane. The sheet vinyl must be clean and free of wax or other bond breakers. The subfloor must be able to hold the weight of the tile and preparation materials required to complete the installation.

3 mm in 3 m and no more than 1 16 in. For tiles with at least one edge 15 in. 0 38m or longer the maximum allowable variation is no more than 1 8 in. If you re installing our designflooring on either a new or old concrete subfloor as mentioned it s essential to conduct a moisture test to ensure the levels are no higher than 75 rh.

Divide the total span of the floor joists in inches by 360 to determine the maximum amount the floor can give in the middle under a live load of 40 lb sq. Ft plus any long term deflection due to the weight of the floor. Most floor tile is adhered to the subfloor or underlayment with cement based thinset mortar. Regardless of the material it must be at least 1 inch thick.

1 6 mm in 6 m from the required plane when measured from the high points in the surface. The tcna gives the following requirements for using vinyl flooring as an underlayment for ceramic tile.

• Tile Stores Fort Lauderdale Florida