A couple options considered are.
Tile on wood subfloor.
Using a grout float held at a 45 angle spread grout firmly into tile joints.
Use thinset with a higher latex content.
If the subfloor is 5 8 or 3 4 you can probably apply tile directly to it with no problem.
Tips for laying tile on plywood subfloor for flooring use intervening sheets of plywood.
Using cool clean water mix the grout to a lump free non pourable consistency.
The best method is to refasten the subfloor then add a layer of plywood.
Install 1 4 inch cork by thin setting it to the concrete pad then installing the heating system by fastening it to.
Lay down a vapour barrier overtop the concrete pad then fasten 3 4 inch plywood using a ramset to the concrete pad.
Wooden subfloors in older houses need to be strengthened and stabilized before backer board and tile are installed.
Use a large bucket and.
It is a good idea to put half inch plywood underlay to strengthen the floor before using modified thin set to put the tile directly on wood.
Thinset is the wet base that you first trowel on the plywood to make the tile.
Use a polymer modified thin set a type of mortar to attach the backer board to the subfloor.
While tile can be laid on plywood do not install tile directly onto.
Follow the directions on the packaging to properly mix the thin set mortar.
Allow grout to set for 10 20 minutes then lightly clean tile and shape grout joints with a damp sponge.
First changes in humidity make solid wood shrink swell and cup more than plywood.
Make sure grout joints are completely filled.
Sandynovember 14 2015 at 5 31 pm.