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Old 09-29-2010, 01:03 PM   #1
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Great Stuff and 6 mil poly vapour barrier


Does anyone know if Great Stuff can come in permanent contact with a 6 mil poly vapour barrier and not eat away at it or damage it? I called Dow and they said "it shouldn't" but I typically don't like/trust "it shouldn't" as an answer.

Last edited by maljeff; 09-29-2010 at 01:26 PM.
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Old 09-30-2010, 01:19 AM   #2
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Great Stuff and 6 mil poly vapour barrier


I've gotten GS on poly several times, as spill-over, and it did not do anything but dry. Some of that sat around for years before I got back to it and cut the poly off; the GS was just sitting there. So, I guess my answer is "It shouldn't".
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Old 09-30-2010, 08:27 AM   #3
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Great Stuff and 6 mil poly vapour barrier


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Originally Posted by jklingel View Post
I've gotten GS on poly several times, as spill-over, and it did not do anything but dry. Some of that sat around for years before I got back to it and cut the poly off; the GS was just sitting there. So, I guess my answer is "It shouldn't".
I've had the same results
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Old 09-30-2010, 10:59 AM   #4
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Great Stuff and 6 mil poly vapour barrier


Thanks for the info, much appreciated.

I have one more question I'm hoping you can help me with. I have some polystyrene insulation glued to my interior basement walls. I noticed that a few of the panels have a few small holes in them - not sure what from as I'm not the original owner. Can I fill those holes with GS?

thanks
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Old 09-30-2010, 12:26 PM   #5
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Great Stuff and 6 mil poly vapour barrier


do a test zap somewhere to see if you have any dissolving issues. if not, fill 'em in. j
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