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Thread: Bubbled on the Roof

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    Site Sponsor Papahoosh's Avatar
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    Bubbled on the Roof

    We are looking into upgrading to a brand new 2020 Reflection 337RLS at Tampa Lazydays. After some walk through I noticed some bubbles on the roof. Should I be concerned? Would this be a bigger problem down the road?
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    2019 Ford F350 6.7L TurboDiesel, Long Bed, DRW, Payload 5379, 4:10 Axle ratio
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    Senior Member Wicked ace's Avatar
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    "We are looking into upgrading to a brand new 2020 Reflection 337RLS at Tampa Lazydays. After some walk through I noticed some bubbles on the roof. Should I be concerned?"

    I would be and am concerned on mine. It seems the sheathing under the roof cover was not attached to the rafters or trusses. The sheathing is allowed to move and flex instead of being held rigid. That's what is causing the membrane to lift like that. The bubbles on mine are mid way between the main rafters such as where the A/C and vents are placed. They are also soft to walk on at these seams, there is little to no support under. This again raises my concern as each time I go up to inspect the roof they get more prominent..
    I had my trailer at the dealer, retrieving it last week. While there I bought up the question with the service writer, who did get the body shop foreman to look it over with me. He professed up and down that's how they are and there is nothing wrong. I'm crossing my fingers, I've had enough troubles.
    Last edited by Wicked ace; 02-06-2020 at 04:30 PM.
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    Site Sponsor SGT ROC's Avatar
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    Looks like its just trapped air to me, and I personally would not be concerned. That's just me. Others may find that it's an issue. Have you asked the dealer about it? If it is just air they should be able to fix it or assure you in writing that it won't be an issue. Or - email Grand Design about it with the pics.
    Bob (retired) & Vicki
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    Having been through GD University, GD Boot Camp Intensive Training, and countless factory rep on-lot trainings, I can tell you that the "sheathing" is stapled and screwed to the trusses. I might consider contacting GD just as a CYOA to create a paper-trail in the event of future issues. You can always get on the Owners Forum and ask Megan, GDRV-Megan.
    Last edited by sbarlag; 02-07-2020 at 09:29 AM.
    Scott M. Barlag
    Burns Harbor, IN

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    Senior Member Wicked ace's Avatar
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    Quote Originally Posted by sbarlag View Post
    Having been through GD University, GD Boot Camp Intensive Training, and countless factory rep on-lot trainings, I can tell you that the "sheathing" is stapled and screwed to the trusses; then the roof membrane is glued. I might consider contacting GD just as a CYOA to create a paper-trail in the event of future issues. You can always get on the Owners Forum and ask Megan, GDRV-Megan.
    Did they show you all that was found in this video in all your university and training?
    https://www.youtube.com/watch?v=mEUmZ4-z1Bg
    2018 F150 XLT 301a, Screw, 4x4, HDPP, Max tow, Andersen Ultimate w/ Curt Double Lock hitch.
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    Quote Originally Posted by Wicked ace View Post
    Did they show you all that was found in this video in all your university and training?
    https://www.youtube.com/watch?v=mEUmZ4-z1Bg
    That guy is an idiot. Why would you put vinyl trim strips on the top mounted seams? To keep sealant away from the attaching screws? There is absolutely no reason to put a trim strip over the screws on the front or rear. Too cheap, he claims.....how about..to seal the screws?? Idiot.

    He may claim to be a professional whatever, but really doesn't know squat. Several statements he makes have no merit except to make a manufacturer look bad.
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    I second the post of huntr70. This guy confused butyl putty for the mylar tape GD uses.
    Last edited by sbarlag; 02-07-2020 at 12:22 PM.
    Scott M. Barlag
    Burns Harbor, IN

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    I have the same issue on mine, and I am concerned as well. Mine is muck more extensive than that. It doesn't look like a sheathing problem, but just that the membrane didn't bond right. It is not a problem today, because there is no damage to the membrane, but this will only get worse as the de bonded area gets bigger.

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    I would not accept that on a brand new unit.

  10. #10
    Site Sponsor Flip94ta's Avatar
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    I lived in a house with a Mansard roof, it was flat on top and the sides were sloped with shingles, for seven years. The flat part was rubber(epdm) and it had several bubbles like what’s been posted here. I would climb up and inspect/walk it in the spring and in the fall after the leaves dropped. Those bubbles never caused any issues and I believe the roof was about 15 years old when I sold it.

    The only place I ever had an issue was a seam on the edge where it met the shingle facade. The sealant dried out and cracked and needed resealed just like a camper. I walked on those bubbles from time to time inadvertently and they were never an issue. I would press on them from time to time I noted they were airtight.

    They made me uneasy when I bought the house but looked just the same when I sold seven years later.

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