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andre74's avatar
andre74
Explorer
Aug 07, 2016

Roof replacement - under or over end caps?

I have recently purchased a 1986 Class C Citation by Georgie Boy on a chevy chassis. Great low milage unit until i discovered a leak and rot and more rot. Long story short, 80% of the unit is now rebuilt. I will now be putting on a new roof.

My question is this:
Is there any reason why I should not put the rubber roof over top of the end caps rather than underneath as it came from the factory? It seems to me that from a logical perspective if the roof material was over top, it may be less prone to leaks. I intend to put trim overtop with the usual caulking and then seal it all off with 6" Eternabond tape. Any input would be highly appreciated.

Andre

4 Replies

  • Thanks for the replies. I wanted to make sure I wasn't missing anything but it is just logical to have the top part of the unit overtop the rest. Cant wait for it to be done. This "disaster" has turned into a very cool and fun project.
  • I agree with BobsYourUncle. Just because it came from the factory a certain way does not mean it's the right way.
    Maybe it looks a little nicer with the roof under the caps but, if putting the roof over the caps makes it more waterproof, that's the right way.
    Just make sure you seal the Eternabond well. And, would 8" be better than 6"? Especially on the front cap.
  • I have never understood why these zipperheads building our RV's cannot grasp the simple concept that water flows downhill.
    If I were doing your task I would make every effort to ensure that the thing has the best chance against water intrusion, therefore, as you say, put the roof over the corner. And like you say, the trim covers it.

    Pretty simple, seems the manufacturer can't figure it out when it's so basic to you and I.

    Be sure you adequately seal between the roof and corner. Don't use silicone!