Proper Subfloor For Tile

Laying tile on plywood.

Proper subfloor for tile. In addition uncoupling tile membranes prevent moisture from infiltrating surfaces below. Tile floors are heavy and tile is a hard material. For this reason ceramic and porcelain tile floors can be considered somewhat delicate despite the inherent strength of the material. Cement backer board can provide a solid flat surface to install tiles on if you have a wood subfloor.

How to prep a plywood subfloor for tile by official fine homebuilding post for residential use one form of underlayment the tile council of north america s handbook allows is plywood over joists that are 16 in. It will break or dislodge if the surface bends under the load. An uncoupling membrane does exactly what the name says. Once you determine the subfloor is the proper thickness check that the subfloor is installed properly with no issues that could affect your installation.

3 check before installation. Preparing a subfloor is an essential step for installing floor tile it provides a level surface that will allow the tiles to properly stay in place. The dry product is mixed with water to a liquid consistency and poured on. With ceramic tile you also need to limit the deflection between joists which is a function of the subfloor thickness and how it is installed.

The subfloor must be free of moisture damage including rot and sponginess and must be securely fastened to the joists and squeak free don t lay tiles on a concrete slab with cracks that appear to be spreading or irregularities that prevent you from leveling it. Wood building materials contract and expand at different rates from natural humidity and exposure. A plywood subfloor must be structurally sound and able to support the installation. It sounds like your joists are well within the acceptable limits of l 300 so your main concern is the deflection of the subfloor between joists.

Pourable self leveling products help to flatten and level a wood subfloor or a concrete slab before the tile is installed. This guide will show you how to prepare your subfloor for a tile installation project to ensure that it s fit to support ceramic or porcelain tile. Subfloor panels and fasteners should be properly placed according the panel manufacturer s specifications. A tight unmoving bond between mortar and subfloor causes cracking.