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Old 07-02-2018, 10:32 AM   #1
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1969 18' Caravel
Greenville , whereEverIroam
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Vulkem or Sikaflex?

Noticed a leak around the exterior plastic range vent, looks like it needs to be resealed. There are so many sealants out there, am wondering which is best. Vulkem, Sikaflex, Acrylix, Walbernize, Silicone or some other caulk?

Looks like Airstream no longer has link to their airstream store on their website.
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Old 07-02-2018, 10:48 AM   #2
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Springville , Alabama
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Sikaflex 221 is my go to. Order on amazon
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Old 07-02-2018, 10:54 AM   #3
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2011 22' Sport
Portland , Oregon
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I read most of the master sealant thread discussion last year and created a "summary" for what was then the current consensus, sorry if only formatting is lost here:

For wheel wells/underbody:

Vulkem 116
Trempro 635 Grey
Sikaflex 221 Black (use Eternabond spray cleaner to prepare surface)
Adseal Premium Quality Sealant Grey

Roof:

Sikaflex 221 White (for roof seams, seals and bonds. Use Eternabond spray cleaner to prepare surface)
Sikaflex 715 (around fans, vents, skylights ... self-levelling)
Adseal Premium Quality Sealant White
Dicor self-levelling sealant
EternaBond® AlumiBond (alum. backed sealing tape, 2", 3", 4", and 6" wide)
Adseal Premium Quality Sealant White
Lexel™ Clear

Windows/Trim/Rubrail/Exterior Lights:

Sikaflex 221 Grey (seals and bonds. Use Eternabond spray cleaner to prepare surface)
Parbond Grey or Clear (small hand tubes, prep and clean-up use cosmoline remover)
Trempro 635 Grey
Loctite® PL® S40 Polyurethane Window Door and Siding Sealant
Lexel™ Clear

Small seams (between aluminum panels):

Acryl-R (available in cans from Airstream store. Use applicator or disposable syringes to apply)
Aluminum Pigmented Gutterseal

Rivet sealer:

Captain Tolley's Creeping Crack Cure
Parbond Gray or Clear (small hand tubes), also good for small gaps (<1/8”) such as top of belt line rub rail, door/window frames, etc
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Old 07-02-2018, 10:55 AM   #4
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Dahlonega , Georgia
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Agree on Sikaflex. NO silicone, it pulls apart under stress and captures water!
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Old 07-02-2018, 11:00 AM   #5
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2003 25' Classic
Zanadude Nebula , Milky Way
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3M 4200 have been using it for years to seal anything I may want to remove at a later date.
Started using it on the boat but found it works just as well on the AS. 👍
I use the 5200 on any permanent sealing, as in dump valve seals.

Extreme Sealing tape on the roof.

Bob
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