Winnebago Adventurer Roof issues

Gjac wrote:

Mile High wrote:

Gjac wrote:
I think what some are missing in this thread is even though there are no structural loads going through that lap joint there is probably 1-2 psi air loads at 60 mph. That does not seem like a lot until you look at the surface of the roof which is a huge area. Adhesives are strong in tension compression and shear but very weak in peel. Once an edge begins to peel your see what Mike posted above. I don't know the caulking/adhesive that Winnebago recommends but even with good structural adhesives "chicken fasteners" (rivets) are used to eliminate the peel forces in composite airframes. Once an owner fully understands this issue things like extra eternabond or a compression strip with screws can be added or just check it every 6 mos and recaulk. I would feel safer with the first two options.

Well we aren't talking airplanes here - so lets not try to use fasteners for something never intended to be fastened that way. Using rivets on this edge is the first step in tearing the fiberglass, and that would be an expensive repair. There isn't enough edge. The best option is to maintain the existing design and don't ignore it. Last I checked, thats how those aircraft mechanics find those cracks and tears in their own riveted systems.

This all really just a regurgitation of what is already discussed in the beginning of this thread.

Fasteners are used all the time on fiber glass parts. My F/G roof on my Class B van was was secured with screws just like my current rubber roof is now, without tearing the FG. This tread is not about which is better a FG roof or rubber/TPO roof it is about Winnebago roofs coming loose and and what a owner can do to fix it. My intent is not to argue with you about this roof design.