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I was about to give up on my studio floor until I tried a $12 bag of sand
The concrete slab for my 10x12 studio in Sacramento had a nasty slope, almost an inch off over 8 feet, and my floating floor was rocking like a boat. I tried shims for a week and nothing worked. Out of ideas, I bought a bag of play sand from the hardware store and poured a thin layer right over the slab under the foam underlayment. I spread it out with a rake, let it settle for a day, and then laid the flooring on top. It filled every tiny gap and made the floor perfectly solid and level. Has anyone else fixed a bad slab with something this simple?
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gavincraig6mo ago
Wait, does the sand ever shift over time? I'd be worried about it slowly moving and making new low spots.
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emmar754mo ago
@GavinCraid, I get that worry. Sand definitely shifts around over time, especially after heavy rain or wind. I've seen low spots appear near the edges of a play area where water pooled and carried the sand away. It's not a huge deal if you rake it back every now and then, but you'd want to keep an eye on it for sure.
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rowan_anderson6mo ago
Ever seen that happen before?
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