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  1. 08-09-2017, 09:51 AM #1
    teebs67
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    Roof Membrane question

    I have a 2017 303 RLS. Can anyone tell me what is the roof material used by Grand Design on that model? I have been told there are two different types of membrane used.


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  2. 08-09-2017, 10:08 AM #2
    Cate&Rob
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    teebs67 - I expect that your roof is TPO, but you can drop any vent frame from the inside to check. See this thread on identifying whether you have TPO or EPDM. https://www.mygrandrv.com/fo...ight=EPDM+dave

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  3. 08-09-2017, 10:36 AM #3
    TucsonJim
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    According to GD, all 2017 models have a TPO roof from Alpha Systems. You might have information about the roof in your owner's documentation package.
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  4. 08-09-2017, 12:43 PM #4
    teebs67
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    Thank you for your replies.


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  5. 08-09-2017, 04:04 PM #5
    RVRunners
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    Yes should be TPO ours is. You can tell difference as EPDM is smooth and TPO has a textured surface. Might contact GDRV to make certain.
    The Adams - 2017 Reflection 367BHS, 2019 F-350 6.7L PSD 4x4 CC DRW, B&W hitch on Ford pucks, Air Lift Loadlifter 5000 Ultimate Plus air bags, "Rupert" the Weimaraner.
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