B+ motorhomes

burlmart wrote:


I am pretty sure that on ours, where the rubber roof (is it EPDM or TPO - it has never been verified to me) goes under the two horizontal seam moldings along the top of the sidewalls, there is no caulk, and none is needed.

I say none is needed as a Camping World roofing guy explainded this at a Louisiana Good Sam Samboree Tech session on (EPDM or TPO?) roofs. I think I remember this, and it made sense to me at the time he explained it.

Maybe someone other than TL put those beads of caulk . Maybe you can ignore them and not risk a roof membrane tear.

Burl, I thought it was EDPM but your question made me look again to be sure. Turns out it is TPO, I had their characteristics mixed up. I will edit my earlier post! This would point me to the Dicor product, then.

Here is a quick article on the differences

(I think Markopolo, who once had a TL and posted here about it, is named Mark Polk. Wonder if he is the author?)

I don't buy the CW guy's take on it. For one thing, there are screws holding the molding in place. Any water getting behind the molding can get into the body via those screws and cause delam.

I don't know, but mine sure looks to be factory applied. It's part of every seam construction from the fender flares to the rear cap components, to over the windows and the roof side moldings. The beads of caulk are pretty slim, though.

Citrus cleaner/degreaser does a decent job of getting the stuff off, but it is not to be used on the roof.