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I am building a new home & am taken aback by all of the never ending dust. Does it make sense to paint the subfloors prior to installing the flooring, in order to seal the dust. We have swept & vacuumed repeatedly, yet the constant drywall & grout dust persists.

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I have always painted my own subfloors. My reasoning is that what ever finished floor material I use will be more easily removed if the subfloor is painted. The carpet underlayment/pad doesn't stick as firmly, Press and stick vinyl tiles adhere better. My biggest reason is spills are less likely to penetrate into the plywood and cause odor or mold issues later.

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One reason to not paint them would be to reduce the level VOC's in your home.

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