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Tony_B's avatar
Tony_B
Explorer
Nov 25, 2017

Re-Roofed with Fiberglass

I have a friend looking to by a pre-owned 36' Class A Motor Home. The current owner has replaced the roof with a fiberglass roof.
I dont know what the original roof was.

Could this be a problem?

16 Replies

  • I would sure want to see how they installed a fiberglass roof on a coach that didn't originally come with one. A fiberglass roof is made in one piece and placed on top of the coach during construction. How would you remove the original roof and then replace with a one piece roof?

    I'm sure it could be done, but I doubt that kind of money was spent on a used gas coach, even if it was done in the first four or five years.
  • 14 years old, 105,000 miles on a gas engine, and a questionable roof?

    I'd tell your friend to keep looking!
  • I dont know what the original roof was nor do I know if it was done professionally or as someone suggested by a bunch of beer drinkers.
    I also dont know how long ago it was done.

    I was just informed that it is a 2003 Dolphin LX

    The coach has 105,000 miles on a gas engine. What kind of mileage could be expected if it were well maintained?
  • Fiberglass roofs are pretty standard on motorhomes. There are some exceptions.

    I don't think any manufacture that used fiberglass has switched to rubber over wood. I personally love the fiberglass roof, because it is so easy to take care of.

    I'm curious how the owner replaced a roof covering of fiberglass on a roof assembly designed for rubber. He truly could have concerns with cracking if it wasn't installed correctly.
  • For me, it would depend on the quality of the fiberglass roof installation.
    It could be a quality, professional job.
    Or it could be something done by a group of guys drinkng large quantites of beer who decided to put a new roof on the RV one afternoon.

    Tell your friend to have it inspected by soemone who repairs boats or other large fiberglass products.

    The big question would be why it was installed and when. Did the original roof fail and leak? A new roof isn't much help if the walls sre rotting away from a previous leak.
  • There are so many boats, cars, RV roofs made out of fiberglass, in high stress situations, that I would not be concerned about cracking IF it was done right. Many coaches already come from the factory with fiberglass roofs.
    Rubber roofs have their own problems so the fiberglass may have been a big upgrade.