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Old 04-08-2008, 12:19 PM   #1
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1976 24' Argosy 24
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Spray Foam Insulation Question

Hello all, I'm reinsulating the under side of our Argosy from the axles forward where I replaced the front floor. Using rigid foam insulation cut and glued to the underside. Should I fill in the areas next to the frame rails with spray foam insulation? I'm a bit worried that the foam will hold water if it gets wet and promote frame rot. Any experts out there with some sage advice? Thanks, George.
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Old 04-08-2008, 12:52 PM   #2
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Originally Posted by Gkiesel
Hello all, I'm reinsulating the under side of our Argosy from the axles forward where I replaced the front floor. Using rigid foam insulation cut and glued to the underside. Should I fill in the areas next to the frame rails with spray foam insulation? I'm a bit worried that the foam will hold water if it gets wet and promote frame rot. Any experts out there with some sage advice? Thanks, George.
Spray on foam is ok, provided you "do not" move the trailer.

When the trailer moves, the dried foam will turn to powder.

Airstream tried it, again, many years ago, and gave up on it.

It's not designed to take vibration.

Andy
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Old 04-08-2008, 01:44 PM   #3
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Thanks Andy, good point. I guess I won't worry about a small gap between the rigid foam board and the frame.The original fiberglass spent most of it's life laying in the belly pan. Not much R value in that. George.
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Old 04-08-2008, 02:08 PM   #4
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A couple of weeks ago there was a thread running with lots of info on this subject.
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