Sticking Tile To Plywood
Peel and stick tiles can be installed over almost any type of subfloor though it is important to properly prepare the floor first to avoid problems with your tile flooring.
Sticking tile to plywood. 1 walk over the plywood subfloor and circle any loose or squeaky areas with chalk. 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. Higher latex content is essential for bonding to plywood.
To be sure maybe drill up to 6 evenly spread out holes in the plywood at least 4mm deep or straight through in the areas to be tiled so the adhesive sinks into the holes and hardens hence creating a stronger fix. I agree that tiling to wood on an exterior is an all around bad idea. For wall installations plywood is overkill beneath the concrete or fiber board which is designed in five eighths inch material for wall settings. Clean and heavily score area to where tiles are to be fixed it sounds like the adhesive does not have a rough surface in which to secure itself to.
One example would be to use laticrete s 317 thinset mixed with laticrete 333 liquid latex additive. 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 only time you ever tile to wood even inside if your a professional is on a stiff 2 layer plywood subfloor with smaller tiles. Backerboard can double the thickness of an installation which can be troublesome in some locations.
For the best results when tiling onto plywood floors follow these instructions. There may be times when you want to bond tile directly to plywood or another wood surface rather than screwing down backerboard first. There are thin set dry set mortars design specifically for adhering ceramic tile to plywood that is designated as an ansi a118 11 thin set mortar. Sometimes people use tile adhesive for backsp.
A quality unmodified thinset should be used and mixed with a latex additive. When installing over existing oriented strand board osb an underlayment must be added between the osb and the tiles. Plywood makes a smooth underlayment for peel and stick tiles. Under british standards bs 5385 part 1 plywood has now been excluded as a suitable substrate material for the direct fixing of wall tiles therefore when tiling on to walls a tile backer board is required however tiling onto plywood floors is still acceptable under british standards.
Because plywood is porous and installed in sheets to create a subfloor some preparations are necessary.