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Old 05-17-2014, 10:55 PM   #1
Nor'easters Club
Ford Super Duty Owner
Join Date: Feb 2014
Posts: 39
Messed up roof replacement-HELP!

I unwisely decided to replace my own EPDM roof and substrate myself to save $4-6K however, like most first timers at anything, I screwed up. When I installed the EPDM it looked ok but when I got back from lunch it had developed huge wrinkles and bubbles across the entire roof. Now that the glue has dried, how do I get it off to re-glue down the roof without ripping/needing to replace the very costly EPDM material?

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Old 05-18-2014, 12:11 AM   #2
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Join Date: May 2014
Posts: 134
Maybe all isn't lost

Not sure how bubbled and wrinkled the EPDM is, but you may still be ok. I did my roof a few years ago and had a few wrinkles and bubbles. The material has eventually flattened out. The material is like a plastic bag. It isn't critical that the material is bonded to the underlying substrate. It is critical that that it is sealed all the way around.

We used EPDM to line canals in Arizona. Major area was laid over decaying concrete 25 years ago. Still in good condition and keeps water from seeping out. The EPDM is a very tough material. It does deteriorate with UV exposure, but will outlast your fiberglass wall panels.

Al & Sue w/T-Bone & Rosco
Go Devils Bus, 1994 8.3 Cummins, Spartan Chassis
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Old 05-18-2014, 12:24 AM   #3
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The glue may have swelled the epdm. I'm with Al, let it sit a few days.
Dave and Laura & two cats
02 Discovery with Accord toad
retired auto rv tech and teacher, wife rt nurse
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Old 05-18-2014, 08:39 AM   #4
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Newmar Owners Club
Spartan Chassis
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Location: Deer Creek RV and Golf Resort, Davenport FL
Posts: 7,010
That may be the solvents in the glue gassing off. It may lay back down again on it's own, eventually.
Jay & Peggy Monroe with Dolly
Can't take it with you - don't plan on leaving any behind
2016 Newmar London Aire 4553, Spartan chassis
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Old 05-27-2014, 08:04 PM   #5
Nor'easters Club
Ford Super Duty Owner
Join Date: Feb 2014
Posts: 39

I ended up scraping under it, thankfully not ripping the membrane, and re-glued it down. This time I put 40lb bags across the membrane to hold it down until it cured. Hopefully this time it works but even as I was moving forward on the roof, I still noticed wrinkling between the bags. I hope it works but it's driving me nuts - I put glue on the membrane and the wood, let it dry until tacky, and moved ahead in 3' increments smoothing it out as I went. It all should have gone well but we'll see.
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replace, replacement, roof

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