Below Grade Underlay for Laminate


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Old 12-08-08, 07:09 PM
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Below Grade Underlay for Laminate

I read the following on the How to section and was hoping for a point of clarification -

Install the underlay - it usually comes in 36" or 42" wide rolls - by rolling it out in rows butted against each other (not overlapping). Tape the seams with duct tape. If you are putting the laminate directly on top of a concrete floor, first put down a plastic sheet to act as a vapor barrier, before putting down the underlay.

I have my plastic sheet cut out to size but was wondering if I tape it down or just lay it down then put the foam over the top? When putting the foam over the top I know to tape the seams but do I also tape the perimeter to the floor?
 
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Old 12-10-08, 02:30 AM
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Hi,
When put the moisture barrier(plastic sheeting) on top of the concrete, overlap the joint by 30cm and you'll dont have to tape the moisture barrier together, and when cut the moisture barrier, try to cut about 1cm extra around the perimeter, that way the moisture is sealed around the corner of your floor.
You also dont have to tape the perimeter of the underlay.
 
 

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