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Open Roads Forum  >  Class A Motorhomes

 > Black spots on rubber roof

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ireen

kent city

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Posted: 10/06/10 06:29pm Link  |  Print  |  Notify Moderator

While cleaning my rubber roof I found many little black spots. Not sure what caused them or how to remove them. Looking for suggestions. Thank You.

hershey

Albuquerque,(fulltime) NM, USA

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Posted: 10/06/10 06:39pm Link  |  Print  |  Notify Moderator

Depending on how old your RV is, the black spots are just the beginning of many, many block spots as the top white surface wears away. After the black spots stop, the black blotches start, after that the roof turns mostly black with some white areas.


hershey - albuquerque, nm
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FIRE UP

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Posted: 10/06/10 10:26pm Link  |  Print  |  Notify Moderator

ireen,
Like hershey stated: depending on how old your roof it, it may be the start of your roof "coating" deteriorating. Not the end of the world here. It kind of would be nice if you took a picture or two for all of us to help you evaluate it. If, it's the coating coming off, for the most part, you can let it happen for quite some time.

In fact, the manufacturer of most of the rubber roofs on RVs say not to re-coat them at all. A large majority of us don't necessarily like that thought so, we've re-coated ours. But, most do it when it's in sad "looking" shape. Apparently, you can let them get completely black according to the mfg. So, if yours is still 99.9% white, just keep it clean and I wouldn't worry about it for quite some time.

Scott



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Eycom

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Posted: 10/06/10 06:44pm Link  |  Print  |  Notify Moderator

Could be artillery mold. Normally, you'd expect to see at least some black spots along the sides of the MOHO also. But I guess under the right conditions, just the roof could get a dusting. If that's what it is and I hope it's not, it isn't likely to clean off.


RVn Full-time


camperkids1025

Bel Air, MD.

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Posted: 10/06/10 08:28pm Link  |  Print  |  Notify Moderator

hershey wrote:

Depending on how old your RV is, the black spots are just the beginning of many, many block spots as the top white surface wears away. After the black spots stop, the black blotches start, after that the roof turns mostly black with some white areas.

I agree with hershey time to recoat the roof.. Jim


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GTN_and_Catz

Houston

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Posted: 10/10/10 10:06am Link  |  Print  |  Notify Moderator

If you're in Houston - it's called air

Our roof looked very similar when we bought it. The PO stored it outside for 4 years and didn't do much, if anything, to keep the roof cleaned.

I enlisted the help of my son and a couple of his friends to scrub it with hand brushes and one of the rubber roof cleaning products we picked up at Camping World. The end result was great. The roof's a blinding white and it's easy to keep clean (I have covered parking). After a trip, if it's been subjected to bird droppings or tree droppings, all it takes is a quick soap & water brushing with a car-type brush on an extension so it can be done standing up (in the middle of the roof).


Gene
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