As the plywood or osb expands the ceramic won t.
Tile over osb wall.
Hello ive got to tile a wall hung wc box covered in osb3 any advice for preparing board before tiling ie primer.
For ceramic tile floors the cement board usually rests on a plywood subfloor minimum 5 8 inch thick exterior grade plywood or osb if new ceramic tile is being laid on an existing floor the cement board can usually be laid right over the existing floor finish provided it is in good shape and the extra floor thickness is not a problem.
I have done in the past but wonder if this will hold up in longterm.
How to tile over existing wall tile.
Cab anyone advise if it is acceptable to tile directly onto osb board for wall tiles.
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.
1 2 cement board over 5 8 plywood is often frowned upon as the cement board offers up no rigidity to the floor assembly.
1 2 plywood over 5 8 sheathing and then ditra nobel ts or 1 4 cement board makes for a tank of a floor.
Im concerned that the tiles wont stick to the wax like board or should i clad it in tiling board and screw the backer board to the osb my problem with that is the connections into the wc may now be too short to connect properly as the ceramic tiles are 8 9 mm thick and i.
If possible you should always use concrete board underlayments rather than plywood.
The preferred method for tile installations is to use a sheet of underlayment.
Wood based panels like oriented strand board osb expand and contract with changes in moisture content.
Always follow the manufacturer s installation.
Plywood and osb expand and contract with humidity and temperature much more than ceramic tile.
Colorful tiles may go out of style and some tiles are inappropriate for the space.
Ceramic tile doesn t expand contract nearly as much.
Therefore according to the 2012 tcna handbook they are not recommended as a substrate material for direct bonding of ceramic or natural stone tile with cement mortars.
For wall installations plywood is overkill beneath the concrete or fiber board which is designed in five eighths inch material for wall settings.
Osb panels provide an excellent base for many types of finished flooring including ceramic tiles if careful attention to the construction and preparation of the subfloor is paid in order to avoid costly callbacks.
Planning and patience along with these tips will help ensure that you install the quality of finished flooring you are looking for.
Tiled walls can last many years but that s not always a good thing.
