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Old 10-28-2018, 07:34 AM   #1
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Two Types of Roofing

Good Morning!

I am the proud owner of a retired Cruise America Class C. I have had it for just over a year and we have had several trips already. Fall is in full swing right now and I am doing some maintenance on the RV. I had decided that I wanted to go ahead and coat our roof and seal it to prevent future worries and to stem the leak that I had already found. I have heard many of the horror stories about buying RVs from Cruise America. I am sure that many of them are quite true and I have had my share of problems with ours. None of the major, and cruise America has been right there to assist me all the way through. But putting on this roof coating has uncovered a problem. It appears that Cruise America had to replace part of the roof. It appears that it was replaced with a EPDM roof which is standard for the industry. The problem is it appears that the rest of the RV, 2/3 of it is another kind of roofing material, probably TPO. I purchased the Dicor Rubber Roof Coating System based on recommendations from Cruise America. My question is will the Dicor product work for both types of roofs?
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Old 10-28-2018, 08:09 AM   #2
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Quote:
Originally Posted by yoyo877 View Post
Good Morning!

I am the proud owner of a retired Cruise America Class C. I have had it for just over a year and we have had several trips already. Fall is in full swing right now and I am doing some maintenance on the RV. I had decided that I wanted to go ahead and coat our roof and seal it to prevent future worries and to stem the leak that I had already found. I have heard many of the horror stories about buying RVs from Cruise America. I am sure that many of them are quite true and I have had my share of problems with ours. None of the major, and cruise America has been right there to assist me all the way through. But putting on this roof coating has uncovered a problem. It appears that Cruise America had to replace part of the roof. It appears that it was replaced with a EPDM roof which is standard for the industry. The problem is it appears that the rest of the RV, 2/3 of it is another kind of roofing material, probably TPO. I purchased the Dicor Rubber Roof Coating System based on recommendations from Cruise America. My question is will the Dicor product work for both types of roofs?
I don't know about the dicor product, but silicon based roof coating is what you need to use. when it dries it should have a rubber like feeling. it needs to expand and contract with both of your roofing materials. Epdm is the cheapest roofing material available for an rv, that is why they used it to replace just one section. It is a good roof but has a life of about 15 years then will need to be replaced unless you coat it to keep the UV rays from ever reaching it. The TPO is more expensive and the exact life is not known..... be sure to clean the surfaces and I would use roofing tape over the seams like the caps and vents and such. Then coat over the top of the tape. Search roofing materials in this forum for more data...
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Old 10-30-2018, 09:54 PM   #3
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TPO is the same color on both sides, and EDPM is black on the back side and white or whatever color on the outside.

You can access the back side of the roof material at a vent fan. Remove the four screws that retain the trim and remove it, and you should find where the roofing material was cut in an X and folded down and stapled.

Call Dicor about the use of the coating on the different materials. I am in the process of re-roofing a Thor/Dutchman Freedom Spirit that leaked at the TV antenna. The antenna found its way to the trash. I haven't ordered materials yet to install, still trying to decide, but I am just about through with the wood sheathing replacement.

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