Using Sand To Fill Low Spots

1683 Views 3 Replies 2 Participants Last post by joecaption, Feb 22, 2013

Chris Sweeney

Discussion Starter · Feb 22, 2013

I will be tiling a bathroom floor. The 3/4" plywood sub-floor I will be working on has a few low spots in it. Now, I've used floor leveling compounds before, but an old contractor friend of mine said I can just use some sand to fill the low spots before laying my cement backerboard down. Has anyone ever heard of this, or is it a bad idea? Thanks!

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joecaption

· #2 · Feb 22, 2013

So you want to lay down a non compactable material that's sure to flex?
How low are these low spots?
What's there now for a subfloor?

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joecaption

· #4 · Feb 22, 2013

I would install the 1/4 tile board in a bed of thinset, use non gypsom floor leveler to fix that low spot then set the tile.

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