Originally Posted by Aquabud
Can anyone tell me what kind of sealant to use on the various exterior parts of the AS. Around the windows it looks like an aluminum colored material. What is it? Also, what kind of sealant should be used on plastic items (vents, stack, AC, etc.).
The Airstream factory uses SikaFlex 221 one part polyurethane sealant on all large seams on the trailer and as a bonding agent on the panel overlap areas that you don't see, and Acryl-R for the smaller seams where wicking into the seam is required.
Many OEMs of large, luxury motor homes also use SikaFlex 221.
Roof sealing can use the same product or their self-leveling Sika-Flex 715.
Great product that I use constantly.