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Old 06-23-2009, 05:03 PM   #1
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1983 30' Airstream 300
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Sealing exterior joints.

Can you seal an exterior joint with out breaking the joint? I've got some that look like they could be sealed better and want to take care of it before I put my new interior in. Thanks for the info
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Old 06-23-2009, 05:18 PM   #2
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Can you seal an exterior joint with out breaking the joint? I've got some that look like they could be sealed better and want to take care of it before I put my new interior in. Thanks for the info
Large seams are sealed with Vulkem sealer.

Small seams are sealed with Par-bond.

Since you have the interior metal off, you should be able to see the inside of the exterior shell.

You can also seal all the seams from the inside with a good quality automotive underseal. You can usually get that underseal in spray cans. The underseal must be a "good" quality."

You did not state the year of your trailer.

If it's older, ball park, than 10 years, check all the exterior gaskets, windows, access compartment doors, entrance door, and the sewer vent pipe cover gaskets. Also check out the ceiling vent cover gaskets.

Is the entrance door fitting correctly, or is it warped?

Andy
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Old 06-23-2009, 05:21 PM   #3
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Hi crashxx -- If you're going to get serious about this you'll need to find the actual leaks with a someone using a Sealtech machine.

Sikaflex 221 is my choice for caulking major seams, window junctions, etc. For sheet metal laps, check the Airstream store for Acryl-R. This is a thin product intended to wick into lap joints. Check this how-to post by 2airishuman and post 7 in this thread - http://www.airforums.com/forums/f456...tml#post412105.

Also read http://www.airforums.com/forums/f44/...aks-45219.html.
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Old 06-23-2009, 05:24 PM   #4
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Thanks! I don't think I have any leaks, just don't want to find some after we get done with the re-do.
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