Lay down inch exterior plywood and screw into the 2 3 s every 8 inches.
Ceramic tile over wood subfloor installation.
Tile floors are heavy and tile is a hard material.
Second the strength of wood boards isn t always consistent.
First changes in humidity make solid wood shrink swell and cup more than plywood.
Lay down inch exterior plywood the opposite direction and screw to the inch.
Cement backer board can provide a solid flat surface to install tiles on if you have a wood subfloor.
While tile can be laid on plywood do not install tile directly onto the plywood subfloor itself.
Tile can be installed over a plywood substrate and it is actually a fantastic way to make sure you don t have deflection in your floor.
A plywood subfloor must be structurally sound and able to support the installation.
Use intervening layers of two sheets of plywood.
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.
The 2 3 s would be standing up on their side so.
Build a structure of 2x3 s with 8 inches of space between the boards.
Hope you didn t like your beautiful new tile floor.
Try laying tile over 1 2 durock or hardie and see what happens when the joists are 19 2 or 24 on center.