Quote:
Originally Posted by 72lb4x4
I would think that if used on a vehicl, closed cell foam would be the way to go. My understanding is open cell foam can act like a sponge and hold moisture--bad.
I've never tried it so don't trust my opinion. Spend some time researching the subject.
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Check the boat forums the foam used in boats is closed cell..that being said I have dug ALOT of foam out of boat that where water logged...that also being said your roof had better not be under water all the time or you have other issues