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10-17-2014, 05:52 PM
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#1
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Registered User
National RV Owners Club
Join Date: Feb 2010
Location: Yakima, Wa.
Posts: 122
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Dolphin Roof
Has anyone had experience coating the rubber roof. Our 97 Dolphen is in great shape and have done some upgrades but my rv dealer said the black spots on the roof mean problems. He said I could coat it and get a few more years. It is stored inside expect when used. I would like to take care of this problem before leaks and etc. Any info appreciated
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10-17-2014, 06:00 PM
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#2
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Senior Member
National RV Owners Club Ford Super Duty Owner
Join Date: May 2007
Location: El Cajon CA
Posts: 2,083
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The black spots are most likely mold.
__________________
2007 Sea Breeze LX 8321 Ford Chassis
2004 Ford Ranger Edge
El Cajon CA.
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10-17-2014, 06:12 PM
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#3
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Senior Member
National RV Owners Club
Join Date: Apr 2012
Location: Chilliwack, B.C. Canada
Posts: 483
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Have a 99 tradewind and when I bought it the roof had been coated but the coating seemed to eat into the rubber roof.
I asked that the roof be recovered, to which it was.
There were more black spots and the inspection done by Cottonwood RV in Chilliwack said the only way to remedy was to recover.
They did an excellent job and now after 8 months a reassesment was done and all was OK.
Makes me feel that the right thing was done with the recover.
__________________
Lyle 'n' Sherry 'n' Muffin ( Shih Tzu x) drive a 1999 National RV Tradewind 7370 with a 2005 Kia Sedona on an Automatic car dolly
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10-17-2014, 06:33 PM
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#4
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Senior Member
National RV Owners Club Solo Rvers Club Freightliner Owners Club
Join Date: Mar 2011
Location: FT for 6 years, NW in the summer, S in winter.
Posts: 1,173
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I used this on mine. Clean it well, apply like it says......like new for 10 years. Rook
EPDM Coatings - Liquid EPDM Rubber Roof Coatings For Roof Leaks
__________________
When you get a chance to dance, or sit this one out......I hope you DANCE!
98 National Tradewinds 7370, powered by a 3126B 300HP CAT Turbo, Freightliner XC chassis
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10-17-2014, 10:31 PM
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#5
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Senior Member
National RV Owners Club
Join Date: Oct 2012
Location: Union City, Ca.
Posts: 553
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What to cover the R.V. roof with.
I have a 36' Dolphin 1997 and I had Camping World put a coat of sealant on the roof.
Cost $300.00.
Don't know how long it will last but it's better then nothing.
Just a thought.
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10-18-2014, 12:12 AM
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#6
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Senior Member
National RV Owners Club Ford Super Duty Owner
Join Date: Sep 2010
Location: Horse Town USA, CA.
Posts: 3,783
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The black spots are mold that grow on the surface of the EPDM rubber membrane from organic (dirt) material and moisture. To prevent the mold from growing clean the roof once or twice a year. Dicor recommends four time a year. The more often the better. The black mold does not damage the rubber, it just grows on the surface. If you roof is still in good condition don't coat it, clean it. I let my roof get a lot of mold on it because it didn't know about the proper maintenance and cleaning needed. Dicor recommends using Tilex to remove the black mold. I tried it, way to slow I read the information about the roof from Dicor that came from the factory when the coach was built. Yeah, I was one of the few lucky ones that got the blue case from National when I bought the coach used. The small manual from Dicor said to use bleach to remove the mold, either diluted or full strength. I started with 25% dilution and worked up to full strength bleach, doesn't take much. I worked it around with a sponge mop not a brush. Let the bleach work for a few minutes, you can see the black spots disappear. Rinse the roof check if you need to re-apply bleach in any areas. Make sure you keep walls wet while using the bleach. Once the roof is clean and dry you can treat it with 303 Protestant or and other coating recommended for rubber roofs. DO NOT use any petroleum products on the rubber, it will destroy the membrane. My roof feels and looks like new. When cleaning the roof it is a good time to inspect all the sealing area's. I know using bleach sounds harsh but it works. It been almost two years since I did mine and still looks good. If I can remember to do it tomorrow I'll scan the manual I have from Dicor and post it here. Attached is a picture of what my roof looked like before and after cleaning with full strength bleach.
Brite-Ply EPDM Rubber Roofing | Dicor Products | Official Website
__________________
1999 35 ft. Dolphin 5350, F53, Banks System, 5 Stars Tune, Air Lift Air Bags, Koni Shocks, Blue OX TruCenter, TigerTrak track bars F&R, Roadmaster 1-3/4" rear auxiliary sway bar, 2004 F450 Lariat Pickup 6.0 Diesel Crew Cab DRW, 4X4, GVWR 15,000, Front GAWR 6,000, Rear GAWR 11,000, GCWR 26,000,1994 36ft Avion 5er, GVWR 13,700, 2,740 Pin Weight.
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10-18-2014, 11:15 AM
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#7
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Senior Member
National RV Owners Club Ford Super Duty Owner
Join Date: Sep 2010
Location: Horse Town USA, CA.
Posts: 3,783
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If you do decide to coat the roof this is the only coating I would use. Liquid Roof, Solution For RV Roof Leaks Repair - EPDM Coatings
I used it on my 5th wheel five years ago that is outside year round in northern AZ at 6100 ft. It goes through freezing weather, snow, and summer sun. The roof still looks like the day I applied it.
Chuck
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10-18-2014, 01:31 PM
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#8
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Senior Member
National RV Owners Club Nor'easters Club Ford Super Duty Owner
Join Date: Jul 2013
Location: Western Massachusetts
Posts: 220
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Quote:
Originally Posted by Rook
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X2
__________________
Happy Daze! Andy, Carol & our adopted Maltese "son", Eli
'99 Tropi-Cal on a '98 Ford F3 chassis
I know the voices in my head aren't real but sometimes their ideas are awesome!
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10-20-2014, 10:46 AM
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#9
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Senior Member
National RV Owners Club Ford Super Duty Owner
Join Date: Sep 2010
Location: Horse Town USA, CA.
Posts: 3,783
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I finally remembered to get the Dicor roof care and maintenance instructions that came with my Dolphin and scan it. In it, it does say you can use household bleach without damaging the membrane, which I have done without any damage.
Chuck
__________________
1999 35 ft. Dolphin 5350, F53, Banks System, 5 Stars Tune, Air Lift Air Bags, Koni Shocks, Blue OX TruCenter, TigerTrak track bars F&R, Roadmaster 1-3/4" rear auxiliary sway bar, 2004 F450 Lariat Pickup 6.0 Diesel Crew Cab DRW, 4X4, GVWR 15,000, Front GAWR 6,000, Rear GAWR 11,000, GCWR 26,000,1994 36ft Avion 5er, GVWR 13,700, 2,740 Pin Weight.
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