The caution with 1/2 inch on a floor is that it may make the bathroom floor higher than the flooring in the adjacent rooms. By Review Home Co | August 4, 2018. If you’re installing directly over the old tile flooring, rough up the existing tile with sand paper. This means you can have a 3/4 inch wood subfloor covered by 1/2 inch plywood, cement board, or approved gypsum fiber underlayment. Plywood and OSB are the two most common materials used for floor decking, and typically they are 5/8″ or 3/4″ thick. Plywood for tiling bathroom floors. Many Thanks . For work you will need materials: Grout joints. Reply. While you can tile over drywall walls, the paper covering on drywall can tear, destabilizing the tile. Tile backer board on a wood subfloor tile directly over a plywood subfloor how to install cement board on a floor how to lay tile over plywood you. While some consider Byrne’s a approach overkill for ceramic tile, a more common method is to use nominal 1/2 in. Sink Pictured Above. While few contractors add the carpenter’s glue between the plywood layers, I would consider it cheap insurance against future problems. subflooring, for a total plywood thickness of 1-1/4 in. This finished tile floor is installed over a plywood and cement backer board subfloor. The bathroom floor is old pine floor boards (1930s house). Over-boarding the floor involves laying a relatively thin board on top of your existing floor to stabilise the area ‘as a whole’ and provides a strong and smooth surface to apply tiles onto. 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. Ceramic tile doesn’t expand/contract nearly as much. Table of Contents. In other premises, cement mixtures or epoxy-cement mortars can be used. This approach is used after the subfloor (floorboards, chipboard or newly laid plywood) is … April, 2002. Raising the Bathroom Floor . Using the right type plywood ensures a long lasting floor. plywood underlayment instead of 3/4 in. The most suitable materials for the subfloor are concrete plywood and cement board. The installation guide for 1/4 inch HardieBacker recommends having wood subfloors made of 5/8 inch exterior grade plywood or OSB (oriented strand board) that is 23/32 inches thick. Vinyl tile, resilient vinyl, and multi-layer vinyl can cause a number of problems, including moisture problems and shifting. No matter what you’re told at a home center, it’s not a good idea to install tile directly over plywood, especially in a damp area like a bathroom. Tiling A Bathroom Floor Over Plywood. Now I've decided to tile my bathroom floor and there's a few things I'm not sure of. Old hardwood floors and wooden subfloors are both surfaces that homeowners may like to cover with tile. or Tile backer board? Non-sheet vinyl flooring. Installing a tile floor is the perfect project for a bathroom renovation. How to Tile on a Wooden Floor. Mr Jenks, Feb 10, 2015 #4. This quick step-by-step guide will provide a simple overview on how to tackle such a project. This will cause either the tile itself to crack and even come loose, or cause the grout to crack inside the joints. Tile demolition is such a messy endeavor and adds so much time to a bathroom remodel that you may be looking for a way to avoid it. You can buy this most places now. O.C. Because plywood expands and contracts beneath the ceramic tile, grout and tile failure (loose tiles and cracked, crumbling grout) is just a matter of time. Lay Groutable Vinyl Peel & Stick Tile Flooring over the tile. Author's Notes:. 3. As for the normal wall, standard tile cement for bathrooms should be OK IMO! Drywall walls, the paper covering on drywall can tear, destabilizing the tile to... The two most common materials used for floor decking, and typically they are 5/8″ or 3/4″.. 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