Re-Roofed with Fiberglass

I know he saw it at least once. I suggested that he go again, but this time bring a good mechanic to check pout the engine and then inspect every nook and cranny for leaks, both past and present. If he and the mechanic are OK with it, then get a good inspector and bring the RV to a mechanics shop where engine could be put on computer for analyzing.
Also check with insurance company for actual value and cost of and quality of insurance.
What have I left out?

Having shopped for and bought 3 motorhomes, I would agree with some of the previous comments that I would keep looking and pass on this coach. An older coach with a replaced roof with a gasoline engine with 105K miles would not be of interest. That is not to say it could still have many miles left in it if it was properly maintained. However, there are just too many good used motorhomes available to jump on one with many questions.

At the very least I would be wanting to inspect it carefully, insist on proof (maintenance receipts, etc.) of regular oil/filter changes, transmission service, and I would expect to get it for a really low price.

The original story as I heard it was that the present owner that is selling the RV built a new fiberglass roof. I had/have no idea what the original roof was made of nor do I know why it was replaced. I am getting this info from a friend of mine that is the prospective buyer.
Since the roof was rebuilt, the only way to find out why, is to contact the original owner.
My next question was how significant or worrysome would someone be buying it with 105,000 miles on a gas engine? The engine was supposedly well maintained.

Well the OP keeps editing his story so now I don't remember what the original question was, but I think we were led down the wrong path.

I would check the sidewalls for delamination, and inside the MH for leaks, if no delamination or leaks are found and the roof underneath has no soft spots when you walk on it I would not worry why the roof was replaced. The PO could have backed into a tree limb or something. These roofs are very thin not like a boat hull or FG front cap. As far as 105k miles the PO used it and if it was well maintained and the price is right asked to see the maintenance records. If everything else checks out and you like the MH make him an offer.

Tony B wrote:
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?

Don't quote me on this, but I'm about 95% sure that National RV only used fiberglass roofs on all of their RV's. If not all of them, I'm confident the Dolphin line came only with fiberglass in this time frame. So if it is a new roof, it's likely it was just a fiberglass replacement of the existing roof. The question I'd have is why was it replaced, and if it was replaced because of leaks I'd want to try and figure out what the underlying damage may be.


Edit: Guess I should have read all the way through as others covered this.

As mentioned, Dolphins came from the factory with a fiberglass roof and they are basically maintenance free, except for keeping chalking around vents and at the edges in good shape. It would be very unusual to ever need replacing unless it was damaged by something, like a tree falling on it , etc.

Tony B wrote:
I was just informed that it is a 2003 Dolphin LX

It had a fiberglass roof when new.


From the 2003 National Dolphin specs

"Steel framed crowned laminated fiberglass roof"

My only comment is I have a textured glass roof on my RV and other than seal inspection it's as good as an aluminum roof, in some ways better. Unlike a rubber roof, there is no upkeep involved (except caulk and seals. It's quieter than aluminum for sure (I had a one piece aluminum sheet on my last unit).

Like the other posters, I'd want to know the install history, how it was applied and who did it. Mine is factory and I don't expect any issues for a very long time.

That’s a big red flag.