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Old 07-21-2016, 02:39 PM   #1
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Airstream Sealant Kit

As a newbie here, I figured I should order some the sealants for the roof, seams, etc. for my AS. So I went to the online AS Store and bought their "kit" for this purpose. It included a can of Acryl-R, an applicator, one tube of Sikaflex 221 black and a tube of grey Adseal and white Adseal. Upon receipt, I was surprised to see that the Adseal is "100% Silicone".

I have read several of the threads on this site and generally I am reading that Silicone is not recommended for use on aluminum. Most indicate that urethane or polyurethane is a more appropriate choice.

Does anyone have comments or experience using this product, Adseal?

By the way, I put the Sikaflex to good use already filling up some of the gaps on the underbelly and the wheel liners to make it more rodent resistant. Thanks for your comments.

Dave
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Old 07-21-2016, 03:09 PM   #2
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I never noticed that, but....

here is what the ad says:

"365330-01 – 10 oz tube of AdSeal Premium Quality Sealant Adhesive – White. Use to seal all exterior roof components (on travel trailers with white roof sheets)". I presume they meant to say white sheet roofs, as in rubber. I didn't know Airstream made any like that, but they must have.

Thanks for the notice! I bought the kit too. I haven't used the white. I guess you could use it to seal penetrations in the frame or belly pan where wires, water, or propane lines go.


Al
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Old 07-21-2016, 04:18 PM   #3
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The silicone use these days is not the same formulation as the old stuff. My biggest issue with using silicone is that it can be so darn hard to remove. At the International I ask one of the techs from Airstream about the kit. He told me it contained the same compounds used at the factory service center and contained no chemicals hazardous to our precious Airstreams. At his recommendation I also picked up the kit. Now to get motivated and apply it. But not until the weather cools down. 99 today outside, 115 in the trailer until I fired up the AC for a while. With the discounted prices and no overpriced shipping charges I spent way too much money in the Airstream Store tent in Lewisburg.
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Old 07-21-2016, 09:11 PM   #4
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Airstream Sealant Kit

The biggest problem with ANY silicone is the recoat issue........ NOTHING STICKS TO IT if you have to reseal ......... EVER!!!!!!

And there is ALWAYS a residue remaining when you try to remove it.

After 16 years of sealing RV roofs and even replacing them, I'll stick ( pun intended) with what I KNOW works.......... POLYURETHANE and silane terminated polymers.

Don't complain when it fails.
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Old 07-22-2016, 08:36 AM   #5
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Quote:
Originally Posted by lewster View Post
The biggest problem with ANY silicone is the recoat issue........ NOTHING STICKS TO IT if you have to reseal ......... EVER!!!!!!

And there is ALWAYS a residue remaining when you try to remove it.

After 16 years of sealing RV roofs and even replacing them, I'll stick ( pun intended) with what I KNOW works.......... POLYURETHANE and silane terminated polymers.

Don't complain when it fails.
Well, that's all I need to know then. Will not be using it on my AS and go with polyurethane. Hope AS did not use on the original application, though, or I am screwed........

Thanks all for your comments.

Dave
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Old 07-22-2016, 08:42 AM   #6
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Lew, what brand do you use?
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Old 07-22-2016, 02:15 PM   #7
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Airstream Sealant Kit

SikaFlex 221 for most bonding and Alpha Sealants 1021 for self-leveling applications.
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