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Old 06-20-2008, 12:06 PM   #1
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plywood over gypcrete?


Is it possible to install plywood over gypcrete? If so, how would you do this? It is NOT possible for us to take out the gypcrete as we live in a condo.

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Old 06-20-2008, 12:31 PM   #2
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plywood over gypcrete?


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Is it possible to install plywood over gypcrete? If so, how would you do this? It is NOT possible for us to take out the gypcrete as we live in a condo.

Thanks

Shell
Why do you want to do this?

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Old 06-20-2008, 12:36 PM   #3
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plywood over gypcrete?


We are hoping to install a hardwood floor. It would not be a floating kind though. With everything that I have read out there, you are not to glue hardwood or nail hardwood to gypcrete. If we would install plywood over the gypcrete, then we would have a surface to install the hardwood.
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Old 06-20-2008, 12:43 PM   #4
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plywood over gypcrete?


What about a moisture barrier and sleeper setup?
What about an engineered floating hardwood setup?
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Old 06-20-2008, 12:47 PM   #5
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plywood over gypcrete?


The gypcrete is already there, so installing sleepers is not an option. We were really hoping NOT to use a floating hardwood floor though.
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Old 06-20-2008, 01:04 PM   #6
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plywood over gypcrete?


Well I'm not a hardwood installer but I know of installs with plywood on top of gypcrete. Obviously, there's a moisture situation to deal with so I assume it needs to be sealed before the plywood is laid. I guess I'd be worried about how the plywood is attached to the gypcrete. Tapcons I assume but I'd also be worried about damaging the gypcrete.
Also, I believe you'd need at least 3/4" ply to account for the hardwood nails so you'd need to address the added floor height. Will it be a problem with any adjacent flooring (including base moldings)? Door jambs?

Sorry I couldn't be of more help.
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Old 06-20-2008, 01:11 PM   #7
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plywood over gypcrete?


I have read somewhere that there is a kind of glue that can be used to lay down the plywood. I don't know what kind it is though. Yes, we were kind of worried about adding the additional height too. The base molding is not a problem as we are replacing all of it.

I didn't know that we had gypcrete until yesterday when I pulled up an edge of carpet and took a tack strip out by the bathroom door. Heck, I hadn't even heard of gypcrete until yesterday. I just assumed that we would have a plywood subfloor. Was I WAY off. lol
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Old 06-20-2008, 01:20 PM   #8
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plywood over gypcrete?


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I have read somewhere that there is a kind of glue that can be used to lay down the plywood.
I wouldn't do that! Adhesives and gypcrete are NOT a combo I'd mess with.

Seriously, start considering engineered floating. No height issues and it's a very durable product. Find a showroom in your area and go see it in person. I recently did some tile work in a brand new condo off Michigan Ave in Chicago (prolly $1 mil for under 1000 sq ft) and they had engineered cherry. Absolutely not the same as 3/4" nailed hardwood, but definitely very, very nice.


Good luck
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Old 06-20-2008, 05:34 PM   #9
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plywood over gypcrete?


any word on schon engineered flooring?
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Old 06-20-2008, 05:54 PM   #10
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Condos have rules, better talk to those guys first.
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Old 06-20-2008, 07:33 PM   #11
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plywood over gypcrete?


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Originally Posted by angus242 View Post
I wouldn't do that! Adhesives and gypcrete are NOT a combo I'd mess with.
Seriously, start considering engineered floating. No height issues and it's a very durable product. Find a showroom in your area and go see it in person. I recently did some tile work in a brand new condo off Michigan Ave in Chicago (prolly $1 mil for under 1000 sq ft) and they had engineered cherry. Absolutely not the same as 3/4" nailed hardwood, but definitely very, very nice.
Good luck
I am completely in agreement with every last word posted.

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