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Old 07-23-2013, 01:52 PM   #1
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How long does polyethylene last?


I have a high moisture content in my slab along with some old black mastic left over (scrapped down to thin layer). I need to put a vapor barrier down before the floor muffler and wanted to know how long 6 mil poly or 8 or 10 mil will last over its lifetime on-grade slab over black mastic.

I was thinking of 10 mil poly for its perm rating and durability, but no idea how long it will last. I dont want it decomposing or deteriorating after 10 or 20 years.

My install is going to be... concrete slab -> 6 or 10 mil poly -> floor muffler underlayment -> Mirage Lock

The other Product I am looking at is VersaShield but I dont want to spend the extra $$$ if a 10 mil poly will do a good job also.

Thanks!

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