Ceramic Tile Over Osb Floor

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.

Ceramic tile over osb floor.

Cut the backerboard to fit the edges of the room with a carbide tipped scoring tool. Both are portland cement based with a compressive strength of 4 500 psi pounds per square inch and can also be used over concrete ceramic tile quarry tile terrazzo and existing asphalt adhesive residue. 1 2 plywood over 5 8 sheathing and then ditra nobel ts or 1 4 cement board. What is your method for tiling over osb floors.

We are thinking about having the 3 8th inch plywood torn out and replaced by 1 4 inch concrete board before the new tiles are installed. Once spread it is dry and ready for flooring installation in about one hour. Can be installed on top of concrete plywood osb gypsum existing vinyl floors structural planks sub floors and radiant heated floors. Ditra xl allows for ceramic tile application over single layer plywood osb subfloors on joists spaced at 24 610 mm o c.

Board is secured and has minimal if no deflection. Lay down 1 2 inch thick cement backerboard over the wood subfloor or hardwood. Regular seasonal humidity shifts are significant enough to make the average 10 x 10 wood subfloor floor expand or contract as much as 1 2. The floor tiles became loose cracked and ugly looking over about 2 decades of use.

Now the entire flooring of ceramic tiles needs to be torn out and replaced. Plywood and osb expand and contract with humidity and temperature much more than ceramic tile. Always follow the manufacturer s installation. 1 2 cement board over 5 8 plywood is often frowned upon as the cement board offers up no rigidity to the floor assembly.

I have done in the past but wonder if this will hold up in longterm. Planning and patience along with these tips will help ensure that you install the quality of finished flooring you are looking for. As the plywood or osb expands the ceramic won t. Plywood or osb flakeboard can expand and contract at too high a rate to be a stable foundation for tile.

Cab anyone advise if it is acceptable to tile directly onto osb board for wall tiles. This will cause either the tile itself to crack and even come loose or cause the grout to crack inside the joints. Ceramic tile doesn t expand contract nearly as much.