While tile can be laid on plywood do not install tile directly onto.
Tile on wood subfloor.
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.
Thinset is the wet base that you first trowel on the plywood to make the tile.
Using cool clean water mix the grout to a lump free non pourable consistency.
Use the right.
Use a polymer modified thin set a type of mortar to attach the backer board to the subfloor.
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.
Install 1 4 inch cork by thin setting it to the concrete pad then installing the heating system by fastening it to.
Sandynovember 14 2015 at 5 31 pm.
If the subfloor is 5 8 or 3 4 you can probably apply tile directly to it with no problem.
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.
Use thinset with a higher latex content.
A couple options considered are.
Using a grout float held at a 45 angle spread grout firmly into tile joints.
Make sure grout joints are completely filled.
Use a large bucket and.
With a trowel scoop out and spread enough mortar on.
Wooden subfloors in older houses need to be strengthened and stabilized before backer board and tile are installed.
First changes in humidity make solid wood shrink swell and cup more than plywood.