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Old 03-26-2016, 02:28 PM   #1
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Distinguishing open vs closed cell foam?


Is there a way to tell if an already installed spray foam is open or closed cell?
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Old 03-27-2016, 11:13 AM   #2
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Re: Distinguishing open vs closed cell foam?


CC SPF is much denser and less compressible.

If you can squish it a bit, it is more likely OC SPF.
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Old 03-27-2016, 11:57 AM   #3
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Quote:
Originally Posted by Windows on Wash View Post
CC SPF is much denser and less compressible.

If you can squish it a bit, it is more likely OC SPF.
The stuff I have is pretty dense, but if you pull a piece and squeeze it will give.... But it's nowhere near as compressible as, say, a packing peanut.
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Old 03-27-2016, 12:02 PM   #4
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Re: Distinguishing open vs closed cell foam?


Closed Cell is very hard.
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