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Old 10-20-2012, 04:21 PM   #1
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suddenly, LOTS of white powdery run off from roof

Like most of you, I have a rubber roof on my MH. A couple times a year, I wash and treat the roof. This spring, I thought I would try a new product, and dropped $60-70 on Camco's Rubber Roofcare system (separate cleaner and conditioner). Works great, but the conditioner/protectant left greasy streaks all down the motorhome that didn't come off nicely. Same type of greasy streaks you'd get if you got Armour All (tire shine) on paint.

It's been great all summer, but I've started to notice this last couple of weeks an excessive amount of white powdery run-off from the roof, which is extra annoying, because I have to pretty much wash it, even after a light rain. Why all of a sudden??

Do you guys think it has something to do with the Camco product?? What are you using on your roofs?

In the past, I've used mainly mild car soap and All-in-one cleaner/conditioners on the roof.

(this post should probably not be in the "General Discussion" forum, so Mods, feel free to move). Thanks!
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Old 10-20-2012, 05:31 PM   #2
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We never use Camco. Reason being just what you found out. It is Dicor or nothing for my roof.
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Old 10-20-2012, 07:19 PM   #3
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I use Dicor products on mine, never used the stuff you did.
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Old 01-31-2013, 05:19 PM   #4
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we just finished our roof using the Shine On System...really easy to do...purchased the products at the Tampa RV show
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Old 01-31-2013, 10:38 PM   #5
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The "extra white stuff" sounds like the top layer of the membrane is deteriorating. You will know for sure if you see the beginnings of black showing through the top white layer. You might consider documenting everything you did and what is happening, just in case the membrane is/was damaged by the Camco product.


I follow the recommendations of Dicor and only wash the membrane with mild soap and water twice a year, nothing else. Any product that contains any amount "petroleum distillates" harms the membrane and shortens its lifespan.
We just retrieved our RV from the mfgrs. service facility and they said our roof covering was in very good condition after 8 years. It is warranted for 12 years, so it appears we are doing something right.
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