Subfloor For Bathroom Tile Floor

Preparation for installing floor tile depends on the type of subfloor in the room you are tiling.

Subfloor for bathroom tile floor.

I have a question. Because of issues of moisture movement and adhesion ceramic tile will work well with certain types of subfloor underlayment systems and can go dramatically wrong with other subfloor materials. The floor must also handle the weight of the tub shower tiles and other fixtures. This adds to the cost of the project but it s better to pay a little extra during installation than it is to tear up a failing tile floor that has.

For more information download our pdf about types of subfloors. No matter how firm the subfloor. It supports your decorative floor finish whether it s carpet hardwood vinyl laminate or tile. Plywood is made by gluing alternating layers of wood veneer.

There is no subfloor. While you can lay tile directly over a concrete slab using thin set adhesive don t make the mistake of applying tile directly to a plywood subfloor. The bathroom floor is constructed of the mesh concrete mud then tile. That usually means the underlayment and the subfloor also get wet.

The plywood will expand and contract at a different rate as the tile causing cracks to develop in the grout lines or tiles over time. If your subfloor doesn t pass the flex test either because it s a bathroom floor and has sustained moisture damage or it s the wrong material you can and should replace the damaged section. This is fine for wood carpeting and resilient flooring but not for ceramic tile. The old floor is almost 1 3 4 inch thick.

Tile floors are especially heavy with layers of cement board mortar tile or stone and grout. Kitchen cabinets or bathroom fixtures above can also add to the dead load. Cdx plywood in particular is used often because it has a high level of resistance to moisture and humidity. I am remodeling a 1953 original bathroom in a ranch home that is built on a pier and beam foundation.

Preparing your subfloor for tile in this video learn how to prepare a wood or concrete subfloor for tile including such steps as checking for dips installing backerboard applying primer and thinset pouring liquid underlayment and when to use osb or exterior grade plywood. A subfloor is the bottom most structural level of your floor. Tile floors are likely to weigh 15 to 20 pounds or more when you add the framing ceiling below subflooring tile and setting materials. Using the right type plywood ensures a long lasting floor.

The bathroom floor gets wet.