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.

Tile on wood subfloor. Thinset is the wet base that you first trowel on the plywood to make the tile. Use the right. Tiling over wood wood in any form serves as a poor subfloor for ceramic or stone tile. 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.

By the diy experts of the family handyman magazine reinforce old 1 x subflooring before adding backer board. It is an orange colored membrane designed as a backer for tile. Use thinset with a higher latex content. Place hardiebacker in staggered pattern so no four corners meet.

First of all tile definitely should not be put down over a wood sub floor. Wood naturally warps twists swells and shrinks due to change in temperature or humidity. After all backer board sheets are in position remove. Avoid tile and grout cracks in the finished floor with proper preparation and lots and lots of screws.

Fasten hardiebacker 1 4 board with corrosion resistant screws or galvanized roofing nails 8 inches apart. Tips for laying tile on plywood subfloor for flooring use intervening sheets of plywood. Tiling directly onto wood is not recommended because it can swell and shrink during humidity which can cause the tiles to crack or come loose. Leave a 1 4 inch gap between the edges of the backer board and the walls to allow for subfloor expansion and contraction.

While tile can be laid on plywood do not install tile directly onto. Arrange the sheets so that the ends are staggered and don t align with each other. 1 lay down 1 2 inch thick cement backerboard over. Tiling over an old solid wood subfloor is dicey even with a layer of backer board.

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