Marble Tile Subfloor Requirements

Subfloor under marble tile 1 the tcna handbook is a guide for installing ceramic tile not stone tiles.

Marble tile subfloor requirements.

Cement based thinset mortar bonds the marble to the subfloor permanently and it prevents the marble from separating. Why dont you run the marble the old fashion way mudset level. Marble tiles are heavy and if the existing subfloor isn t structurally sufficient it will have to be reinforced before the tiles are 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.

One osb eight require two layer all plywood i e subfloor underlayment six allow supporting members to be spaced at 24 oc. Tiles are glued down with a thin set adhesive a mortar based product that now is the standard for ceramic and stone tile products. Adding a layer of conventional backer board will add to the deflection problems not remove them. 2 get deflection specs from stone tile dealer.

23 floor systems utilize plywood. 3 with one exception all tile backer boards are non structural. To meet tca stiffness requirements floor framing should be no more than 16 inches on center with minimum 19 32 inch plywood subflooring. This way you wont have to install any wonderboard and such you will only need the metal mesh with the black paper backing and run 1 2 height from the highest spot of the floor you can also charge much more for this type of instalation.

Upgrading to 23 32 inch plywood will stiffen the subfloor by almost 80 and provide a more solid feeling floor. The subfloor must be structurally sound as well as thick and stable enough to hold the weight of the tile without moving or flexing. Subfloor preparation is similar cement board underlayment installed over a sturdy plywood subfloor is the best base for marble tiles just as it is with ceramic tile. Specific subfloor underlayment requirements maximum tile size other details as required amongst tcna listed assemblies.

Regardless of the material it must be at least 1. Once the polished marble tile is set firmly in thinset there s reason to. 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.