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Is it okay that plywood was used for the base under tiled bathroom floors?

Wouldn't you want something that would not absorb water?

asked by SillyZilly (45)

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Tags:  floors  materials

answers

It might be okay, depending on how far apart the supports/girders underneath are spaced (the closer the better). Of course it would have been better if a more stable backer board would have been used.

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posted by pedro (139)
6 votes

Plywood is appropriate for use as base under tiled bathroom floors, but it should be exterior grade so that it will not delaminate if any water leaks through to it.

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posted by suzie09 (33)
6 votes

Plywood is fine under tiled bathroom floors. If the tile is ceramic and properly grouted, no water will ever reach the plywood. If one is really concerned about water absorption, then a marine-quality plywood which is designed for use it moist areas is an excellent choice.

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posted by L66 (25)
6 votes

No, plywood was not used for the base under tiled bathroom floors, because plywood and woods will absorb the water and it will not be so strong to withstand huge items.

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posted by Pradesh (43)
5 votes

For warranty you need to have at least 1 1/4" thickness on your sub floor. I would put down a layer of hardiboard 1/2" use glue between the wood and the hardiboard and screw it down

5 votes

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