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Old 04-13-2015, 08:51 PM   #15
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Quote:
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I checked the can read the small print.. " not to be used on rubber roofs"
epdm is a synthetic rubber, it's not rubber.
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Old 04-13-2015, 09:44 PM   #16
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Quote:
Originally Posted by scep View Post
clarification...
What would you like clarified?
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Old 04-13-2015, 09:47 PM   #17
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Quote:
Originally Posted by scep View Post
epdm is a synthetic rubber, it's not rubber.
That's true. But if it says not to use on rubber roofs, I would not use it on EPDM.
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Old 04-13-2015, 10:03 PM   #18
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I used this on my C holding up real well in S fla sun, watch that kool seal stuff some not for epdm, this is ELIXIR RUBBER ROOF COATING -PPL
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Old 04-14-2015, 07:48 PM   #19
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That's true. But if it says not to use on rubber roofs, I would not use it on EPDM.
Rubber roofs as in rubber membranes on commercial building roofs, not the epdm roofs on rv's. There is a big difference between the two membranes.

Ever notice that the membrane on the rv's has a black layer and a white layer? The black part is the rubber, the white part is the synthetic epdm coating thats applied to the rubber membrane to make it chemically resistant.
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Old 04-14-2015, 10:22 PM   #20
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Rubber roofs as in rubber membranes on commercial building roofs, not the epdm roofs on rv's. There is a big difference between the two membranes.

Ever notice that the membrane on the rv's has a black layer and a white layer? The black part is the rubber, the white part is the synthetic epdm coating thats applied to the rubber membrane to make it chemically resistant.
Then, why does Dicor say not to use any products with petroleum distillates or citric ingredients in it. If it was chemically resistant it wouldn't matter what one used. And yes, they are talking about RV rubber roofs (EPDM).

https://www.dicorproducts.com/catalo...-roof-cleaner/
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Old 04-15-2015, 05:27 PM   #21
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So if they told you that some products have highly aggressive solvents and some have weak solvents and the ones with weak solvents wouldn't be a problem they would have to specify them. They arent in the business of doing that. Besides what fun is it to tell people a competitors product can do the same job for a lot less. They arent Geico.

Think in terms of pouring gasoline (highly aggressive) on the roof. I wouldnt do that either. But if for some reason you dripped some grease (weak) on the roof after lubing the antenna hinge pins, it could sit there for eternity with any issue.

It's all about the strength of the solvents in the mix.
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Old 04-15-2015, 06:07 PM   #22
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You can try to justify using Kool Seal all you want, but I would not use anything that says "do not use on rubber roof" without first talking to the manufacturer. The only coating I will put on my EPDM rubber roof is EPDM Liquid Rubber coating. I have used it and know it is safe and lasts for several years. The last time I looked grease is a petroleum product. When I bought my 5er, someone had gotten grease on the EPDM roof of the slide. The spot with the grease was swelled up and deformed. Why it was there, never could figure it out, nothing there to grease.

Liquid Roof, Solution For RV Roof Leaks Repair - EPDM Coatings
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