If the hardwood flooring is composed of narrow boards with a very smooth flat surface you could leave the flooring in place and screw cement backer board down on top of it before applying the tile.

Tile over hardwood subfloor. Thinset is the wet base that you first trowel on the plywood to make the tile. This finished tile floor is installed over a plywood and cement backer board subfloor. First changes in humidity make solid wood shrink swell and cup more than plywood. To tile over hardwood you d need to clean it first preferably with mineral spirits to remove any build up you may have on the surface.

If the tile is being installed in a bathroom consider applying an isolation membrane over your wood subfloor to further protect against expansion and contraction. Installing tile over a wood subfloor is a lot easier today than it was when i started my remodeling career. Trowel on a thin layer of thinset mortar over the. Measure the wall.

Splits and knots create weak spots that flex. This should be followed by a second layer of 15 32 inch thick plywood installed with a 1 4 inch gap between sheets. Use thinset with a higher latex content. Remove the grout around single tiles with the oscillating tool.

How to tile on a wooden floor 1. Second the strength of wood boards isn t always consistent. The tile council of north america tcna calls for a subfloor of 19 32 inch tongue and groove plywood to be installed over wood joists spaced 16 inches on center with a 1 8 inch gap between sheets. 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.

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. While tile can be laid on plywood do not install tile directly onto. Hardwood flooring is usually finished with some form of polyurethane. Cut the backerboard to fit the edges.

Use the right. You shouldn t tile directly over hardwood flooring since it can expand contract and cup due to seasonal changes in temperature and humidity. Apply fiberglass tape to each seam in the backerboard to cover it. Tips for laying tile on plywood subfloor for flooring use intervening sheets of plywood.

The nature of this finish will tend to reject things that are trying to bond to it including your tile adhesive. The old fashioned mud method of floating a thick mortar bed in preparation for the tile has given way to using cement backer board over a plywood subfloor. 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.

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