Originally Posted by sgtjoe
Getting ready to redo the seams on my fiberglass roof on our 39' DP. Which would you do and why? Eternabond or Caulk??
Well Sir, I just went through all this with a small re-sealing of the roof joints-to-sidewall on our '04 Itasca Horizon 36GD with the C-7 330HP CAT. I had a couple of feet on one side and, about 3 or so on the other, that the roof-to-sidewall glue/caulking joint had given way and was pulled away from the j-rail.
Well long story short, I contacted a local RV repair facility here where we live and, was told that 100% Silicone would work for my application and that, that's what they do for that repair on a daily basis. So, I purchased some and, proceeded with the re-caulking.
After which, I posted on here about my re-seal and, was promptly told, I used the wrong sealant and, it will simply not last. I was told to go find a Urethane sealant which, supposedly is what Winnebago used in the first place.
So, to answer your question. I'd look up the callout sheet for all the sealants for your particular coach and, find or purchase just what they used or, something identical to it, in your local big box store, i.e. Home Depot, Lowes etc. But, I'm not fan of putting TAPE all over the seams on my roof so, that's just my opinion on that .