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Old 05-01-2016, 01:32 PM   #1
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Re Caulk My roof

I was at Jackson Center Friday and wanted to re caulk all the vents on my roof and talked to one of the techs in the service center and he said they use ADSEAL caulk . When I went back into the store to buy it it is now Silicone caulk and I always thought not to use Silicone on aluminum , always use a polyester sealant on aluminum . I'm wondering what others think of using silicone ? I didn't buy any yet . any help appreciated .
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Old 05-02-2016, 10:09 PM   #2
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Sikaflex is the better option
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Old 05-03-2016, 05:33 AM   #3
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Sikaflex is the better option
I have 2 tubes of Sikaflex but I have the white roof and Sikaflex is grey
Thanks for the reply .
Les
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Old 05-03-2016, 07:13 AM   #4
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I have 2 tubes of Sikaflex but I have the white roof and Sikaflex is grey
Thanks for the reply .
Les
It's available in white,
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Old 05-03-2016, 07:36 AM   #5
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I, also, am due to do some recaulking. I am debating on using Silkaflex or Acryl-R for the joints where the white and Aluminum sections meet. I know the white is painted Aluminum. The sealant that was used is becoming "powdery" Should I try to remove the old sealant using a stick?
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Old 05-03-2016, 07:53 AM   #6
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caulking for seams

Here's an option I used....after researching and getting tired of using that messing caulking every year...I purchased the eternabond tape for seams, rivets and vents. Cut strips wide enough to cover rivets and seams and used on roof only. Good for 10 years and was easy to apply when following directions. So far no leaks and inspecting after a year it is in very good shape. Check out the web sight and video.
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Old 05-03-2016, 08:59 AM   #7
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I want clarification

This ADSEAL CALULK is 100% silicone. This was recommended by "a Service" person at Airstream?....then, it was not available in their store? Lets talk about this some.
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Old 05-03-2016, 09:13 AM   #8
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If you have ever tried to re-caulk where silicone caulk has been used, the answer would be obvious to you. Re-caulking over old silicone caulk takes a lot more effort because it is very difficult to remove the old. And, the new caulk over old is more likely to fail because of reduced adhesion.
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Old 05-03-2016, 01:43 PM   #9
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Sikaflex for sure

I've used many different sealants working on boats (fiberglass and metal). Sikaflex is the way to go for sealants. Avoid silicone!!
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Old 05-03-2016, 04:36 PM   #10
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This ADSEAL CALULK is 100% silicone. This was recommended by "a Service" person at Airstream?....then, it was not available in their store? Lets talk about this some.
Yes it was available in the store but I thought silicone was a no no on aluminum ,He had just getting done with a pressurized leak test and was resealing the leaks .
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Old 05-03-2016, 04:47 PM   #11
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https://store.airstream.com/product/...m-sealant-kit/

This is their sealant kit.
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Old 05-03-2016, 05:31 PM   #12
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100% silicone Adseal is what is currently recommended for Airstreams.
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Old 05-03-2016, 07:17 PM   #13
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I hate to tell you this, but new production Airstreams are now sealed with Adseal on the roof and only seal tape between the aluminum skins elsewhere. No more Vulcum lathered everywhere on the inside of the outer skin. If you want to reseal the roof later the old silicone just lifts and peels off almost effortless. Just ask lewster about clearing off my newly Adseal calked roof for new solar panels. I am not convinced Adseal is here to stay, but after researching the company in the UK they are a large company that is into all kinds off sealing supplies and techniques. Maybe so. When Airstream resealed my roof last fall, they had a cheaper well known roof sealant available, but this is the one they said will hold up to Texas weather the best. Time will tell, but if they have quit using vulcum , or an equivalent, skin repairs will be a lot easier during disassembly.
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Old 05-04-2016, 08:31 AM   #14
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I also checked Adseal UK. I thought installing the rubber roof could be a good alternative to fixing all the leaks with Captain Tully and which ever calk is in vogue at this time.
mike
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