Tile Floor Subfloor Thickness

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Tile floor subfloor thickness.

It supports your decorative floor finish whether it s carpet hardwood vinyl laminate or tile. Over the 3 4 in. Typically made of plywood or osb and ranging in thickness from 19 32 to 1 1 8 thick the subfloor is truly structural second only to joists in this respect. Large format tiles such as 18 by 18 inch and.

Preparation for installing floor tile depends on the type of subfloor in the room you are tiling. Plywood underlayment instead of 3 4 in. Tile thickness small 1 inch mosaic tiles can be as thin as 1 8 inch. Medium 6 by 6 inch and 12 by 12 inch tiles are typically 3 8 inch thick.

If you have a concrete slab floor the slab may be considered the subfloor. Concrete expands and contracts and that type of movement can also crack the tiles and the grout. The subfloor is the bottom most layer and it rests on the joists. For more information download our pdf about types of subfloors.

A subfloor is the bottom most structural level of your floor. Those changes in the subfloor will cause problems for the actual flooring especially for vinyl or tile. However you re not out of the woods. While some consider byrne s a approach overkill for ceramic tile a more common method is to use nominal 1 2 in.

A subfloor system that worked fine for a single layer of ceramic tile may not be strong enough to handle the many hundreds of extra pounds added when a second layer is added. A subfloor that is less than 1 2 inch thick will dimple or cup in the middle over time. In this scenario jim and rich install 1 2 cementious backer unit cbu resulting in at least an 1 1 8 thick subfloor. A smooth surface is necessary for a subfloor.

Regardless of the material it must be at least 1. An extra layer of ceramic tile adds substantial thickness to the flooring layer. When installing a ceramic tile floor on a concrete subfloor you don t have to worry about flexing as long as the concrete slab is at least 1 1 8 inch thick which most slabs are. The subfloor under the tile should be at least 1 1 8 thick with a minimum of 5 8 thick exterior grade plywood topped by 1 2 cement backer board.