Black spots on hull - Fiberglass RV

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Old 06-01-2013, 09:46 PM   #1
Senior Member
Name: Paul
Trailer: '07 Scamp 16' SD
Posts: 110
Black spots on hull

Well, I was able to take some time and wash our scamp for the first time today. During washing and inspection I found a couple things.

1: every window and seam has some sort of sealant applied to it. From what I've read here, it's not needed. Is that correct? Most of it appears in fairly rough shape.

2: the roof is covered in black spots that I was unable to scrub off with a cloth and automotive soap. Any ideas what this stuff is, and how to get it off? I'm attaching a couple pics for reference.

Thanks for all the help as always

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image-636647656.jpg   image-57748839.jpg  


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Old 06-01-2013, 10:35 PM   #2
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Dudley's Avatar
Name: David
Trailer: 1998 Casita 17 SD
Posts: 564
the black stuff is probably some mold that seems to love the fiberglass trailers and boats. Try a mix of bleach and water and that should remove it. Yours is not bad, mine was pretty bad.

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Old 06-02-2013, 07:40 AM   #3
Senior Member
Name: Paul
Trailer: '07 Scamp 16' SD
Posts: 110
I had initially thought mold as well, but my better half said she didn't think so because this thing sat out in the sun all day.

Any ideas on what causes this mold, is it just lack of maintenance by a PO?
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Old 06-02-2013, 07:46 AM   #4
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cpaharley2008's Avatar
Name: jim
Trailer: 2016 2ndGen Escape19 Prairie Schooner pulled by 2014 Dodge Ram Hemi Sport
Posts: 6,239
try some Barkeepers Friend to clean and then apply some Zep or ReddMaxx to keep it clean.
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