Tile Over Osb Subfloor Floor

Manufacturers generally recommend that the deflection of the subfloor system be limited to no more than span 360 under total load.

Tile over osb subfloor floor.

However there is significant debate in the tile industry regarding the conditions necessary for a long lasting successful installation. As the plywood or osb expands the ceramic won t. Measure the dimensions of the room to calculate how much material you ll need to purchase. Tiling over an old solid wood subfloor is dicey even with a layer of backer board.

On higher end jobs we use 3 4 plywood otherwise osb. Ceramic tile doesn t expand contract nearly as much. I have had people asking about installing sheet lvt and vct directly to the osb subfloor without the use of an underlayment. What is your method for tiling over osb floors.

Avoid tile and grout cracks in the finished floor with proper preparation and lots and lots of screws. What we put down for a subfloor depends on the budget. The only thing that changes is that on osb subfloors we use pl with teh ring nailer for putting down underlay. Plywood and osb expand and contract with humidity and temperature much more than ceramic tile.

The most current ansi standards for tile installation a108 1999 specifically exclude osb. By the diy experts of the family handyman magazine reinforce old 1 x subflooring before adding backer board. 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. Leave a slight 1 16 gap between each.

This is not to say that tile cannot be installed reliably over an osb subfloor. Cover the entire osb subfloor with a layer of 1 4 plywood underlayment.