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Old 11-23-2008, 08:05 PM   #21
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Originally Posted by goransons View Post
...As far as ribs conducting heat/cold etc I'm sure they do, when we get snow and have the heat on in the trailer, after some time on the outside you can see the ribs only (not where the fiberglass is) but we've never noticed much difference on the inside.
In humid climates or very cold weather, the inside skin adjacent to the ribs have been seen to sweat or have a frost line (from breath moisture). So the ribs really do conduct quite a bit. That's one reason that it's not so productive to do "special" insulation, unless you also tape all the ribs and stringers with foam tape--don't if even doing that makes the "special" insultation, eg, bubble, worth it. I think the local improvement in R-value gets lost in the noise due to the ribs, leaks, etc.

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Old 11-23-2008, 08:07 PM   #22
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My 66 has thick black stuff sprayed on the end caps. The sides don't have it. They sell the truck bed coating at the auto parts store as a roll/brush on. I don't know if it is compatible with aluminum.

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Old 11-23-2008, 09:25 PM   #23
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Alumanutz, you're correct, thats how mine is, end caps, and actually a couple spots around the door, but that might have been a repair at some point. I'd call a trusted body shop and ask about it. I think I recall people spraying the front banana wraps with that stuff in some threads I read in the last year. Might search those and find out how it held up. Certainly being outdoors, and pelted with road debris would be harder on it that inside the walls I would think.
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Old 11-23-2008, 09:31 PM   #24
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If you look at the picture of my trailer after a light snow, you can see the snow has melted right at the rib lines.
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