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Old 03-02-2020, 07:31 AM   #1
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Join Date: Aug 2010
Location: Michigan
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Cracking Paint?

Has anyone had issues with their Full Body Paint Cracking? I went to Forest City in June 2018 to repair some cracked paint on the top of my drivers side slide out on a 2016 Sunova 33c. While in florida the cracks have reappeared in the exact locations, so I now have made an appointment again in Forest city for them to evaluate weather or not they will warranty their work. You can see the "new" crack in the picture below.
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Old 03-15-2020, 11:54 PM   #2
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Unfortunately this is a problem that will get worse and is virtually impossible to fix permanently. The fiberglass siding on motorhomes just can't tolerate extreme heat and sun. My previous Monaco motorhome had vinyl graphics over the gel coat exterior and the ones that were dark colors were cracked and peeling badly. When I removed them I found the fiberglass underneath was cracked severely too. I made the rounds to several body shops that repaired motorhomes and the shop owner that was most honest (and also the most expensive), that the only way to fix it with a better outcome would be to grind the the crack down to its depth, feather it out and fill it with filler. This is very labor intensive and it takes a lot of work to do it right. He said even then they might come back eventually. I didn't want to spend a lot of money on this so I elected to have the cracked areas sanded and the cracks filled with filler and filler primer. My Monaco sat outside and I didn't have a cover for it, and within 2 years all the cracks all came back. My neighbor down the street had a 45' 2008 Monaco that spent its life outside and the side that was exposed to the sun cracked badly in all the dark painted areas. He was told the same thing I was when he was going to have it fixed, and when he built a new home he built garage to keep it inside. I have seen this problem in a lot of other motorhomes I have looked at, irregardless of the brand. The fiberglass just can't take the heat expansion and contraction in a hot, high UV full sun climate. I don't know if the newer motorhomes have improved in that area but I doubt it. I am also amazed that the latest trend is to paint more dark colors on them. I notice yours is cracked in a dark painted area in an area of stress where the awning fastener penetrates the fiberglass siding. If they'll warranty it I'd have them do it again, but instruct them to take more material off and feather it out before applying the filler. They might also check to see if the fastener is over tightened, creating more stress in that area. Once fixed, keep it under a roof or cover whenever possible.

Here's some other discussions of the problem that I've found:

https://www.irv2.com/forums/f258/hai...ing-87942.html
Gelcoat Problem
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