Lauan is not sturdy enough.
Tile on plywood 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.
First changes in humidity make solid wood shrink swell and cup more than plywood.
Plywood makes a smooth underlayment for peel and stick tiles.
It should be fastened to the subfloor using thinset and then screwed down every 10 square.
Leave a 1 4 inch gap between the edges of the backer board and the walls to allow for subfloor expansion and contraction.
Plywood underlayment over a 3 4 in.
In other words be sure that no four.
Install 1 4 inch cork by thin setting it to the concrete pad then installing the heating system by fastening it to.
The crack isolation membrane is critical as it protects the tile from small movements in the wood subfloor.
Arrange the sheets so that the ends are staggered and don t align with each other.
Exterior grade plywood exterior plywood is an acceptable underlayment for tile and is preferred to interior grade plywoods because the bonding adhesives used are waterproof.
A couple options considered are.
Use thinset with a higher latex content.
Use the right.
While tile can be laid on plywood do not install tile directly onto.
Concrete board concrete board also called backer boardcomes in 1 4 and 1 2 thicknesses and is usually sold in 4 x 6 sheets.
The plywood will expand and contract at a different rate as the tile causing cracks to develop in the grout lines or tiles over time.
No matter how firm the subfloor.
Uncoupling membranes aren t recommended for tiles smaller than 2 inches square and should not be used when covering old hardwood flooring due to adhesion problems.
After all backer board sheets are in position remove.
The best method is to refasten the subfloor then add a layer of plywood.
Another tcna method f147 uses a min.
Lay down a vapour barrier overtop the concrete pad then fasten 3 4 inch plywood using a ramset to the concrete pad.
Thinset is the wet base that you first trowel on the plywood to make the tile.
A 3 4 inch plywood subfloor on a joist structure with 24 inch spacing needs the extra thickness of cementboard or the floor will flex and the tiles will crack.
While you can lay tile directly over a concrete slab using thin set adhesive don t make the mistake of applying tile directly to a plywood subfloor.
Because plywood is porous and installed in sheets to create a subfloor some preparations are necessary.
Tips for laying tile on plywood subfloor for flooring use intervening sheets of plywood.
