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Old 12-03-2009, 09:35 AM   #1
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2007 27' Safari FB SE
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Drip inside, how to find the leak outside?

My Airstream leaks. Not bad. I have a plastic cup attached to the ceiling via suction cup which catches most of it.

Trouble is, I'm just observing where it leaks through the inner skin seam. It could have leaked through in a bunch of places and drained over to this point - a vent, rivets, etc.

Observed drip is between rivets on this seam about 15" to the curb side of the center.

How can I tell where the leak is on the roof? Is there a procedure for this?
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Old 12-03-2009, 11:36 AM   #2
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Hello Bohemian,

I would start by getting up on the roof. Often times the leak source can be identified by looking at the sealing surfaces around roof penetrations. A small hole, seam, or opening in a seal or sealant can allow the water in. So it pays to visually examine vents, AC, antenna, and any other openings on a routine basis. We make it a point to do a roof examination each Spring and Fall.

The other thing to consider is that water will travel the path of least resistance, so the leak may or may not origniate at the point you notice it inside.

A sure way to trace leak sources is with a pressure test. Here is a recent thread where a member did his own testing using a leaf blower and some ingenuity.

http://www.airforums.com/forums/f44/...highlight=Leak

You can also contact soldiermedic (Steve) as he provides this service as well, or there may be a vendor in your area who can provide this service.

Good luck,

Kevin
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Old 12-03-2009, 12:06 PM   #3
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Wrap an old blanket around a ladder.....go topside for
a close examination...if your trailer is leaning now, consider
the angle as you search for the offender
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Old 12-03-2009, 01:07 PM   #4
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up on the roof..

This would be the first place I would look....

Black tank vent..
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Old 12-03-2009, 01:29 PM   #5
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Quote:
Originally Posted by kennethowens View Post
if your trailer is leaning now, consider
the angle as you search for the offender
Good point.

Quote:
Wrap an old blanket around a ladder.....go topside for
a close examination...
Which also brings up another point if you're not experienced working on your roof. To avoid damage when accessing and working on your AS roof, avoid walking on the end caps and stay on the rib lines when moving around. I use a couple of 18" square pieces of masonite for kneeling pads when working on the roof. They're lightweight, easy to move around, and help spread my weight out a bit.


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Old 12-03-2009, 03:15 PM   #6
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I heard that grey/black tank vents are susceptible for leaks because of how the Airstream shell flexes on the road while the vent pipes shake and move up and down.

After about 4000 miles of Fwy travel in a year...
I had leaks from both at grey vent and black vent, and from one of the skylight.

- There were occasional drips along the ceiling panel seams at right next to, and at both sides of, my grey vent, in my case.

- The curbs (or the aluminum frames) of the skylights are usually caulked very thickly with sealant at its outer seams (the junction between the curbs and the outer roof panels). The leak is more likely at the inner seams (where the domes and the curbs meet) or at one of the many screw holes. If you remove the skylight shade and the trims from inside your trailer, you can check if its leaking. You can stick your fingers (be careful, don't cut your fingers!) to the surrounding fiberglass mat and see if they are soaked with moisture.

Just sharing my experiences with my 1-year old trailer.
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