However the floor must be properly reinforced to minimize flexing.
Attaching tile to plywood wall.
The silicone or urethane adhesives should work too but the thin set mortars are easier to work with and easier to get full adhesive contact between the tile and its substrate.
The preferred method for tile installations is to use a sheet of underlayment.
Level the surface using a wood filler.
Use thinset with a higher latex content.
Backerboard can double the thickness of an installation which can be troublesome in some locations.
For flooring use intervening sheets of plywood.
For wall installations plywood is overkill beneath the concrete or fiber board which is designed in five eighths inch material for wall settings.
If possible you should always use concrete board underlayments rather than plywood.
Use the right type of plywood.
Then i would remove any loose tiles and scrap away any adhesive that is left on the ply and tile you want the ply and tile to be perfectly clean for the next stage.
While tile can be laid on plywood do not install tile directly onto the plywood subfloor itself.
The joists if they re 2x8 newer code and not 2x10 older code must be braced every four feet with cross braces which minimizes independent flexing of each joist and the subfloor above.
You may also want to tile an outdoor shed or tile plywood boards for display.
Tips for laying tile on plywood subfloor.
First changes in humidity make solid wood shrink swell and cup more than plywood.
Unscrew switch plate and outlet covers and set aside.
Tiling onto plywood using a standard tile adhesive can be problematic initially i would make sure that the plywood surrounding the pipe work is secure and that you don t have any movement in it.
Then in either case the subfloor should probably be about an.
The best method is to refasten the subfloor then add a layer of plywood.
Fill in all large gaps and holes as these will prevent proper adhesion of the tiles.
There may be times when you want to bond tile directly to plywood or another wood surface rather than screwing down backerboard first.
According to backer board manufacturers and tile setters installing backer board directly over an old solid wood subfloor is risky for a couple of reasons.
How to glue tile to wood.
You can bond tile directly to a plywood subfloor and expect it to last.
Space the field and edge fasteners.