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Old 07-07-2018, 02:10 PM   #1
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Need Advice on Roof Sealant

We took our trailer to dealer for some work and they also performed a free inspection. We were told we needed sealant on the roof, but we decided not to have the dealer do the work.

Is this something we can do ourselves? If so, what is involved? And if we do decide to have the work done by the dealer or another facility, how much can we expect to pay to have it done?

Thank you for the information.
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Old 07-07-2018, 02:51 PM   #2
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Sealants Summary ...
There are several sealant threads in the forum. The one below is fairly comprehensive in listing the most commonly used / preferred by forum members.

I’m sure many will chime in with advice. All I will say is be sure to completely remove the old sealant before applying new, as new doesn’t stick to old

http://www.airforums.com/forums/f456/sealants-summary-116214.html
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Old 07-07-2018, 02:52 PM   #3
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And of course you can do this on your own.
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Old 07-07-2018, 05:38 PM   #4
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Thank you DMT, I appreciate the information and advice.
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Old 07-07-2018, 06:51 PM   #5
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I think that if you have the ability to do the work yourself nad take the time t select the bet products you are almost certain to a much better job that most RV shops - you are working on your own RV after all!

I did a lot of re-sealing on our trailer when in Florida last winter, and found that a scraper in a Dremel oscillating tool did a great of of quickly removing old sealant around skylights, fans, etc.

Just be careful with it !

It is worth the effort to get all the old stuff off off and clean surfaces really well (paint thinner?) prior to applying new.

Where a seam will be visible I think it worth using painters tape to ensure a neat job - be sure to remove the tape soon after sealant application.

I generally used Sikaflex Polyurethane products (or similar) for major seams and "Acryl R" in a dispensing gun for finer seams such as around awning brackets etc.

Brian.
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Old 07-07-2018, 10:25 PM   #6
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I use sikaflex 221 gray and gutterseal. Both blend into the aluminum nor will they harm the aluminum either like silicon does. Sikaflex is easier to work with but I like the gutterseal too. Removal of old caulk (only comes off by mechanical means). Then clean the area with acetone. No alcohol derivatives with sikaflex. It makes the caulk not stick. But it's a very easy and doable job. Just time consuming
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Old 07-08-2018, 12:53 PM   #7
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I've been resealing our Fan-Tastic Vents with Eternabond tape. Much of the Trempro 635 that I used 9 years ago had deteriorated and there were cracks in the vent bases. The Eternabond is easy to use and while it doesn't look as nice as a good line of caulk, it's on the roof so it doesn't matter to me.
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Old 07-08-2018, 01:18 PM   #8
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x2 on the Eternabond tape. I like their Alumibond due to the foil exposed side that goes well with the aluminum skin of the trailer. Prep the surface well and it will stick longer than you'll need it to.
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Old 07-08-2018, 05:24 PM   #9
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Some where along the time your trailer was made Airstream started using Adseal on the roof and seal tape on the vertical seams. Both are very easy to work. However, if yours was done with sikaflex or some other hardened sealant, you will have to spend a day scraping all of the old stuff off. Some don't like Adseal because it removes easily and may be a less permanent sealant. I have now used both and no leaks. Next time 5 years goes by I will use adseal. A lot less labor is involved. Using an oscilatting tool is an excellent idea!
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Old 07-08-2018, 05:35 PM   #10
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Depends...

There are a lot of things that can leak on the roof of a 30ft AS.

What exactly did the dealer say was leaking?

Different things call for different products.

I used Extreme Sealing Tape on the FF vents and TV antenna.

Bob
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Old 07-08-2018, 08:36 PM   #11
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Will Eternabond tape work on roof seams as well?
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Old 07-08-2018, 08:51 PM   #12
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Quote:
Originally Posted by sburrw View Post
Will Eternabond tape work on roof seams as well?

Eternabond is excellent on roof seams. I covered all seams on our Avion. Really suggest using the Alumibond tape. Blends well with the aluminum skin. Just clean the area to be covered well, remove all silicone. Once covered, you will not have to worry about a roof seam leak.
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Old 07-09-2018, 01:34 PM   #13
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Just resealed around all the roof vents and antenna on my 2005 Safari (first time ever done). I reviewed lots of posts and youtube videos on processes to do this. Settled on using on a heat gun ($20 at Lowes) to heat up the old caulk and a rigid plastic scraper to remove it. The heat gun made the job much easier. I then used Goo Gone to remove the residual caulk, followed by a wipe down with denatured alcohol (a mild solvent). This got it down to original pretty easy. Then used Sikaflex semi-self leveling ($15/tube)to re-caulk. Probably applied it too wide and thick, but I supposed it does not matter other than wasting caulk. Time commitment for a single fan box was less than an hour. I was new to this, and had no problems other than leaves and twigs falling from trees and sticking to the new caulk....
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Old 07-09-2018, 01:51 PM   #14
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