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Old 01-28-2006, 01:50 AM   #1
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Floating floor over cement


I am installing a floating floor over cement slab. The flooring has the underlayment attached to the back. Is there a product I could lay under the entire floor to form a vapor barrier or will the attached underlayment suffice? ~ Gwen

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Old 01-28-2006, 09:25 AM   #2
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Floating floor over cement


In Oregon I would apply 2 coats of concrete sealer and a membrane (VisQueen) with seams taped for the full length.

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Old 01-28-2006, 01:55 PM   #3
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Floating floor over cement


I will seal the concrete and a thin membrane will work for a barrier ~ PS I am in the desert ~ the sealer will help keep any previous animal odors from surfacing.
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Old 01-28-2006, 02:14 PM   #4
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Floating floor over cement


6 mil poly.

but you need to test to see how much vapor is actually occuring.

tape a square of 6 mil on all 4 sides and wait a day to look for condensation.
or get a moisture test from HD
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Old 07-18-2006, 05:58 PM   #5
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Floating floor over cement


try roughing up the floor if you are doing a membrane sealer. Also stay away from the acrylics from what I've heard they fail in a couple of years and you could have problems... the stuff I hear you should use is an epoxy... though it costs more. If moisture was your only concern, you could probably use a penetrating sealer.
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