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Old 02-21-2016, 06:37 AM   #1
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Roof material

I'm new to RVing. I am looking into purchasing a motorhome. My question is what is the difference between a fibreglass roof, and a TPO roof. Which is more durable? As well which requires the most maintenance?
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Old 02-21-2016, 10:20 AM   #2
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I'm new to RVing. I am looking into purchasing a motorhome. My question is what is the difference between a fibreglass roof, and a TPO roof. Which is more durable? As well which requires the most maintenance?

After having both I would only want a fiberglass roof.
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Old 02-21-2016, 12:18 PM   #3
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If I could trade in my unit on a new one it would have a fiberglass roof. It would be the first thing on my needs list.
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Old 02-22-2016, 07:13 PM   #4
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I've had both (have fiberglass now). TPO is excellent and I would have it again, but fiberglass is a bit more durable if you ever scrape tree branches or otherwise hit something.

Roof maintenance is about seams and openings, not the material used. Both TPO and fiberglass just meed an occasional wash to keep them bright looking. After 10 years or so, fiberglass may need a coat of paint.

Seam and opening maintenance is identical. You need to inspect (annually is recommended) and touch up the caulked seams and openings. That's where the leaks come from.
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Old 02-24-2016, 07:28 AM   #5
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I have had both, like the tpo much better. The 2010 winnie that I had came with a fiberglass roof,had many spider cracks that made me uncomfortable as to how long it was going to be before I started having leaks. As it turned out the unit was too small for us so we traded up, now, I don't worry at all about those spider cracks. The tpo is very easy to clean, IMHO,is very durable, would not hesitate to buy a unit with tpo. As already stated, both must be maintained.
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Old 02-24-2016, 11:15 PM   #6
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Mine is fiberglass. 27 years old, no leaks.
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Old 02-24-2016, 11:31 PM   #7
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I have had both, like the tpo much better. The 2010 winnie that I had came with a fiberglass roof,had many spider cracks that made me uncomfortable as to how long it was going to be before I started having leaks. As it turned out the unit was too small for us so we traded up, now, I don't worry at all about those spider cracks. The tpo is very easy to clean, IMHO,is very durable, would not hesitate to buy a unit with tpo. As already stated, both must be maintained.
Winnie makes a crap fiberglass roof. Can't compare to a higher end one piece roof.



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Old 02-24-2016, 11:34 PM   #8
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Have had both fiberglass and BriteTek (a TPO). Both the DW and I agree that the BriteTek roof was quieter in the rain. Upkeep is about the same, check the sealant twice a year and spray 303 on it, the skylight and the vent domes.
In the 57 years I've been RV'ing I've NEVER punctured a roof.
Roof material wouldn't make a difference unless it was a rubber and not TPO roof, then, if we had a choice, I'd go with fiberglass over the rubber.
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Old 02-25-2016, 12:13 AM   #9
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There's a third choice, aluminum.
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Old 02-25-2016, 12:46 AM   #10
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Aluminum is very rare in MH's today but yes, in some older ones they are out there. Usually have seams in them that need sealing although our 2000 Dutch Star had a three piece fiberglass roof so 5 seams to watch plus the side seals.
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Old 02-25-2016, 08:32 AM   #11
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There's a third choice, aluminum.
Aren't Lazy Daze motorhomes equipped with an aluminum roof.
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Old 02-25-2016, 09:19 AM   #12
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Aren't Lazy Daze motorhomes equipped with an aluminum roof.
Yes they are. I had a Londonaire with a aluminum roof.
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Old 02-25-2016, 10:00 AM   #13
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My only experience with an aluminum roof, was on a 1995 Four Winds 5000 21A I had bought new. Within the first year, the front wall of the cabover developed pin holes from electrolysis from some source or other. The dealer (with authorization from Thor) replaced the front wall with a filon panel and also pulled off the aluminum roof and replaced it with either an EPDM or TPO roof (I don't recall which one, and didn't care at the time ).
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Old 02-25-2016, 04:33 PM   #14
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In the previous picture of the "crappy Winnebago fiberglass roof", notice that there is nothing wrong with the fiberglass roof material. The seam at the edge has come apart. Same thing could have happened if Winnie used TPO, aluminum, or even EPDM. That's a design or construction failure, not a reason to avoid fiberglass roof material.
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