Plywood manufactured with a fully waterproof adhesive and with an.
Tile over osb wall.
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.
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.
Board is secured and has minimal if no deflection.
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.
I have done in the past but wonder if this will hold up in longterm.
1 2 plywood over 5 8 sheathing and then ditra nobel ts or 1 4 cement board makes for a tank of a floor.
Wood based panels like oriented strand board osb expand and contract with changes in moisture content.
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.
Always follow the manufacturer s installation.
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.
Plywood and osb expand and contract with humidity and temperature much more than ceramic tile.
Cab anyone advise if it is acceptable to tile directly onto osb board for wall tiles.
How to tile over existing wall tile.
Tiled walls can last many years but that s not always a good thing.
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.
The preferred method for tile installations is to use a sheet of underlayment.
I have ripped up many a floor with 1 2 plywood as the tile substrate over 5 8 sheathing.
If possible you should always use concrete board underlayments rather than plywood.
For wall installations plywood is overkill beneath the concrete or fiber board which is designed in five eighths inch material for wall settings.
Hello ive got to tile a wall hung wc box covered in osb3 any advice for preparing board before tiling ie primer.
