Plywood -vs- Sheetrock
I’m in the process of having new parquet floors installed and instead of the contractor installing plywood underneath be is putting sheetrock. Is this something to be alarmed about?.
I’m in the process of having new parquet floors installed and instead of the contractor installing plywood underneath be is putting sheetrock. Is this something to be alarmed about?.
If the contractor did in fact use sheetrock rather than cement board, I highly recommend that you fire him on the spot and hire someone else to fix it. You don’t want someone THAT incompetent to rip up anything in your house, even his own mess. This is a serious red flag.
Thank you everyone for your comments. You are all very helpful.
Absolutely positively no. Even between layers of plywood. Just a bad idea.
Make him remove it. You don’t put sheetrock under your wood floor. You might put greenboard or cement board under tiles, but not under a wood floor.
This cannot be.
But if it is, it’s a great recipe for mold.
Besides, sheetrock crumbles when you walk on it! It’s powder and paper! It should never be subjected to gravity!
I would guess its cement board not sheetrock as the poster above mentioned. You should double check with contractor to make sure.
I’ve heard of sheetrock as part of soundproofing, but usually in the ceiling, not the floor, such as by hanging several layers in a crossing pattern, so the seams don’t line up, on a ceiling held by springs. But the subfloor makes no sense. If you spill anything on the floor and it leaks through to the sheetrock, the moisture will stay between the floor and sheetrock without a chance to air out and dry. A perfect recipe for mold. I can’t see how any good can come of this.
i don’t really know much, but i did so much research about soundproofing, some of it stuck 🙂
you definitely wouldn’t want the sheetrock directly touching the final floor surface (parquet in this case), but in between layers of plywood wouldn’t be a bad idea. the mass of the sheetrock is what makes it good at dampening sound. i laid sheetrock over a plywood wall, and it does very well at keeping noise contained (of course that wall is part of a larger system that includes a layer of air space but that may be impractical on a floor job).
Jimmy, you always seem to know your stuff, here– could you sandwich sheetrock between two layers of playwood? I just think putting the parquet directly on such a soft material would end up sinking into it.