Sealing the 1966 Avion
Background When looking over the Avion I found that in many places there was remnants of old brittle sealant. I am not quite sure if the long seems at the endcaps and panels were sealed from the outside at the factory but since there were some small leaks I decided to do them all. The caulking around the windows for sure needed an update. I also found that the roof was covered with something that looked liked a mix of tar and horse hair and the material had several small cracks. Materials: Sealant : There is 2 recommended, Vulkem 116 (Amazon) or TremPro 635 (Vintage Trailer Supplies) both in grey. Regular silicone or bathroom sealants are not for RVs. TremPro feels much like a regular sealant while Vulkem has a more grainy texture and dries a bit harder. Vulkem can be removed with isopropanol or ethanol while soft, it is moisture curing and has a long list of hazard warnings. I like Vulkem a bit better, although TremPro claims it's the modern replacement for Vulkem....