For anyone with a Winnebago with a fiberglass roof check the chaulking at the drip rail where the roof meets. On my 2013 Itasca 26he there was a seam open almost all the way down both sides of the roo...
I quit using Silicone seal 20 years ago . Its very hard to remove for resealing . I have had no problem using KOOL SEAL . To apply lots I use a wooden 3/4 sq. peg & drip if off for a large seam .No problem in 20 yrs. Back thin thats what MH builres used .