Forum Discussion

teeznu's avatar
teeznu
Explorer
Jan 16, 2015

Clear coat beginning to peel

Class A motorhome, now in it's ninth year of age. Noticing on some of the roof areas the clear coat is beginning to lift and peel. Suggestions as to how to correct/fix this issue.
Thank you all in advance.
  • If clear coat over Gel Coat, then scrape off the loose clear coat and sand the remaining attached clear coat to a dull finish using 400 or 600 grit sandpaper.

    1. If you use SprayMax 2K rattle can you will get a new shine (after some color sanding and buffing) but have some ridges where the old clear coat meets the peeled clear coat areas. High up off the ground so not so terrible to look at. This lasted about 2+ years for me.

    -or-

    2. Spray a primer, spray a base coat, then clear coat. This has worked for the brow of my rig for 11 years since it was done.


    If the current clear coat covers a base coat instead of Gel Coat, then sand the old clear coat off, reapply the base coat, and spray a clear coat.

    New Clear Coat over old Base Coat will not be durable according to my research. My two part instructions require that the Clear Coat be sprayed within 24 hours of applying the base coat. Base Coat applied within 36 hours of the Primer application.
  • Mine is also deteriorating, and it's only a 2008. The tops of both caps are affected, and the "turndown" on the edges of the fiberglass roof where it is painted black, down to the trim rail. The sidewalls are perfect still.
  • I've got the same problem at the top of the paint edge where it meets the roof. Apparently Winnebago (and others) do not apply the clear coat in a thick enough layer at the edges. It depends on the technique used in the manual application, rather than the uniformity of a robotic application as is done on your car.

    My body shop said to clean the affected areas and remove any loose clear coat. Gently wet sand the remaining clear coat edges, Clean with alcohol and let dry.

    He said to purchase a two-part clear coat product available at most auto part stores. You puncture the bottom of the spray can, shake, and apply. He said to try it. . . what could go wrong?

    Or I can bring it to him for $$$$.
  • If perhaps you are only talking about the front and rear caps it's not that much of a problem to just prep those small areas and repaint. That might get you a few years down the road.

    From my experience though trying to sand off deteorating clear coat from high gloss sidewall fiberglass will leave a dull finish underneath which a fresh layer of clear coat will not hide. Maybe it would be possible with a higher skill level.
  • My body shop pressure washed the area, then recoated with new clear coat, then buffed it out, looks like new.
  • Common problem, the only real cure is to sand it off & re-paint. Some say you can just sand the clear off & re shoot it but I have my doubts.
  • Not sure you can do anything. If it is peeling, it is too far gone. Sand and reapply clear coat as far as I know.