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Old 12-17-2010, 03:38 AM   #29
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Why hasn't someone started to spray a truck bed liner product on the tops, add the color of your choice with a uv stabilizer and it would seem that all the worries are over; little noise, no chance of putting a hole in the stuff and you could have a polka party on the roof it you felt the urge.
This material has been being used in after market that I know of for 10 years as a roof material. There are several different manufacturers and each has it own characteristics. Some have deep and/or sharp steeple, other are more smooth and flexible. Gulf Stream has used it for a roof on the BT Cruiser for about 5 or 6 years now. If and when I need a new roof (EPDM) I have considered it.
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Old 12-17-2010, 06:27 AM   #30
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RV Wizard, is epdm a composite system?
Pete, I find the stuff amazing; there has to be a significant amount of expansion to the stuff when it is sprayed over a metal truck bed, no?
jack, imagine what the Toy weighed, must have added three hundred pounds or more.

midnite, I think you have hit the nail on the head, how thin and of what quality was the alloy being used.

As for fiberglass, not sure; Phoenix Crusier uses a glass roof and on their web page forum and Facebook page members/owners are starting to comment on what is being called a roof delamination characterized by raised sections of the roof. This is really the perfect storm, these poor people most certainly will be dealing with water leaks when something-hail ? impacts the raised section with enough force to punch a hole in the roof covering.

Maybe the only real solution is to use heavy gauge painted galvanized metal, yes the weight would be an issue to be worked around, but why get cheap with the roofing system?, really the only thing I am sure of is that I will never have a coach with a rubber roof-there is one reason and one reason only as to why this material is being used, cost.
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Old 12-17-2010, 08:16 AM   #31
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rough, flat roof buildings have rubber roofs.
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Old 12-17-2010, 01:08 PM   #32
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What's best for an RV roof, rubber or fiberglass? Why?
We really like the fiberglass, but.............#1, it's noisy in storms, and #2, sealing the edges at the walls is very critical. If water penetrates the seal, there's possibility of delaminating side walls. So, which is best? Either way, proper maintanence is the key. Good luck.
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Old 12-18-2010, 03:27 AM   #33
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RV Wizard, is epdm a composite system?
EPDM = ethylene propylene diene monomer in other words rubber roof. There is another "rubber roof" similar but it is a thermoplastic polyolefin (TPO) roofing membrane used in th e RV industry. This type roof has a harder surface and a fiber backer.
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Old 12-18-2010, 05:51 AM   #34
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RV Wizard, other than the backer material, ease of application?, is there a difference between the two??

Pete, the commercial rubber flat roof systems are about 20 times thicker than the paper thin, literally, rv products. And the reason for a flat rubber roof on buildings is exactly the same for the use of rubber on coaches, its the least expensive alternative.

Now having said all this, our old Shasta had a rubber (?) roof and it was pushing 18 years when we sold it, not a single issue: heck not even a single bubble, thicker material and better workmanship could be the reason....
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Old 12-18-2010, 08:37 PM   #35
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Was at another very reputable repair place the other day, we had a brief discussion regarding roof replacement. He told me that it was almost the same price to use aluminum as it was for rubber.

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Old 12-19-2010, 01:24 AM   #36
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RV Wizard, other than the backer material, ease of application?, is there a difference between the two??
The EPDM is slightly easier to install as it is more flexible than TPO.
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Old 12-19-2010, 05:28 PM   #37
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We had a 5th wheel with a rubber roof and a 12 year guarantee. Now in our AC Allegiance 40X, we have a fiberglass roof. Having been on both, the fiberglass sure looks more durable...less likely to get ripped by a tree limb, etc.
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