Forum Discussion

drifterpilot's avatar
drifterpilot
Explorer
Jun 20, 2016

Fiberglass Cleaner for Motorhome Roof

I am parked at a state park in Massachusetts. Over the past month, leaves, twigs and caterpillar poop have stained my motorhome fiberglass roof big time.
I am looking for a fiberglass cleaner (solution??) that I can apply fairly easy using a long handled brush and staying off my knees hopefully (74 years old).
I have full body paint with two coats of clear-coat applied on the sides and ends of the coach that I don't want messed up with the cleaner.
I was thinking of going to a nearby boatyard (lots of yachts) tomorrow and see what they might suggest.
Any suggestions from this forum will be appreciated.
Class A
  • et2's avatar
    et2
    Explorer
    Jun 21, 2016
    I just did ours in the storage yard a week ago. All I used was a $10.00 sponge mop that had the squeeze handle to get most the water off the sponge end. A five gallon bucket with about a 1/8 cup of apple cider vinegar and even less bleach filled with water. Started with the sponge mop and ended up after applying the water waiting about 15 seconds and wiped with a rag ( rinsed in bucket as I went). That kept it off the sidewalls. After done with the roof I wiped down the edge. Took about 1 hour. Came out perfect.
  • GREGORYJ's avatar
    GREGORYJ
    Explorer
    Jun 21, 2016
    Mr Clean Magic Eraser pad will remove the stubborn spots if the other methods don't clean off everything. Rinse well after it's done. Petroleum (var-sol) products won't harm a RV fiberglass roofs if there are spots or globs of tree sap that nothing else takes off.
  • gonesouth's avatar
    gonesouth
    Explorer
    Jun 21, 2016
    I used to use Mop'N Glo and a sponge mop like et2 on my Beavers. All done standing up. Then I used the same things on the sides and end caps. used to do it again about every 3-4 months.
  • fcooper's avatar
    fcooper
    Explorer
    Jun 21, 2016
    For my painted aluminum roof motorhome, and my faded gelcoat boat, I use Jomax house cleaner. I mix the Jomax, bleach, and water as described on the Jomax bottle. I spray the mix on with a garden sprayer, let it sit for about 5 minutes, then either use a brush or pressure washer. It has not harmed the gelcoat sides or the painted with clear coat storage bay doors.

    Here's a vendor's picture of Jomax.



    Fred
  • 10forty2's avatar
    10forty2
    Explorer
    Jun 21, 2016
    X2 on Mr. Clean Magic Eraser. I just cleaned my entire roof with the product. Granted, it will take several pads as they deteriorate during use, but they do a fantastic job of cleaning the gunk and stains on the roof from trees and other drippings. My coach sat out all winter in my driveway under pine and maple trees and the roof was hideous. It took several hours to thoroughly clean it, but Mr. Clean came to the rescue!
  • crasster's avatar
    crasster
    Explorer II
    Jun 21, 2016
    I also like the degreaser (purple) from Sam's club. Works very very well at getting general mess of RV roofs. I put it on a hose end sprayer, spray stuff down, let soak a bit, mop off, then rinse.
  • J-Rooster's avatar
    J-Rooster
    Explorer
    Jun 21, 2016
    Richard, I use a product called Simple Green which I purchased at WalMart. I use it 1 to 1 in a 5 gallon bucket about (1/3 full). I use a stiff bristle deck brush to apply it on my fiberglass roof. Then I use a power washer (on the lowest setting) to remove the Simple Green. If you use my method wet down the sides, front and back of your coach to prevent run off streaking, and never let the power washer touch a caulk seam.
  • jplante4's avatar
    jplante4
    Explorer II
    Jun 21, 2016
    Spic 'n Span (powder if you can find it) followed by Mop 'n Glow. Did this before the season last year and it still looks good. Minor amount of white streaking down the sides now indicates it may be time for more Mop 'n Glow.

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