Readers ask: How To Install Ceramic Tile Over Plywood Subfloor?

Can you lay tile on wood subfloor?

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. No matter how firm the subfloor; 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.

Do I need to prime plywood before tiling?

The plywood surface will then be the surface to be tiled. So your nice new clean ply floor isn’t so clean anymore and if it’s not prepared properly prior to tiling, the adhesive will just go onto the dirt on the floor and might not stick! This is why it is better to prime it than not to.

What kind of subfloor is needed for ceramic tile?

The subfloor under the tile should be at least 1 1/8″ thick, with a minimum of 5/8″ thick exterior grade plywood topped by 1/2″ cement backer board.

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Can I put floor tile directly on plywood?

Tile can be laid on plywood. But do not install tile directly on the plywood subfloor itself. Use an intervening layer of a sheet of thinner plywood.

Can you use 1/4 inch cement board on floors?

Floors: A 1/4-inch minimum thickness is needed, but thicker panels are also fine. Walls: Use 1/2-inch or 5/8-inch-thick cement board, not 1/4-inch. The extra thickness is needed when spanning the studs and it provides a solid base for the tile.

Should you lay plywood over plank subfloor?

Take time to make sure your existing planks are well secured in place. Repair any broken planks. Install a layer of at least ½” or preferably 5/8” ply over the existing planks. Like all wooden flooring products, it’s a good idea to acclimatise your plywood before laying it.

What do you put under tile to make it stick?

Underlayment is something you put on top of your substrate to prepare it for tiling. The substrate (or subfloor) is the ground, whether it’s made of plywood or cement. Cement board or backer board are the most standard underlayments.

Do you have to put cement board under tile?

Whenever you’re laying tile on a wood subfloor, you need to first install cement backerboard to prevent leaks and water damage that could harm your flooring and the structure of your home. Unlike wood or drywall sub-surfaces, cement backerboard will not rot, warp or grow mold and mildew when exposed to water.

What do I prime plywood with before tiling?

If tiling on fibre-reinforced cement sheets, or plywood/chipboard, then we would always recommend priming the reverse side and edges with BAL Bond SBR. This helps protect the plywood from moisture penetration which could cause the board to swell.

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Can I use cement board instead of plywood?

Cement backerboard is more stable than plywood in high humidity and other wet environments. It won’t swell and buckle the way that plywood does, so it’s safe to use in mudrooms and bathrooms where things like spills and puddles are normal, as well as in areas with high levels of moisture in the air.

What do you use for subfloor under tile?

Install a cement-based backer board following the manufacturer’s instructions. This provides a solid surface under the tile that prevents flexing that could lead to cracking. Use a polymer-modified thin-set – a type of mortar – to attach the backer board to the subfloor.

Do you need a moisture barrier under tile?

During patching, most people usually wonder if they would need a moisture barrier under tiles. Well, yes. A moisture barrier should be installed to protect the flooring against moisture or moisture vapor. Trust me; you do not want moisture problems after installing your tiles as they can ruin the entire project.

Can you put tile in a pier and beam house?

It is possible to install ceramic tile onto a pier and beam foundation. A pier and beam foundation is flexible, and contracts and expands with pressure and the weather. Since ceramic tile is not very flexible, it can crack under these conditions.

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