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Open Roads Forum  >  Class A Motorhomes  >  Maintenance Issues & Tips

 > Resealing Fiberglass Roof

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steveh27

Grosse Pointe Woods, MI

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Joined: 08/21/2004

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Posted: 09/08/22 02:44am Link  |  Quote  |  Print  |  Notify Moderator

My Class B fiberglass roof had a small gouge and a small spot of spider web cracking. I cleaned it and covered with eternabond tape 2 years ago. No problems.

Bruce Brown

Northern NY

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Posted: 09/08/22 02:46pm Link  |  Quote  |  Print  |  Notify Moderator

Tom/Barb wrote:

We just finished re-coating our Newmar's roof..
I sanded with 320 grit, and really cleaned the roof.
I removed all the old sealant around all vents and other openings.
After all the cleaning was done I applied 2 coats of white Flex-seal.

Looks great we will see how long it lasts.
cost was about the same as all the other coating on the markets ($109.00)

Our roof was not leaking, it simply looked horrible, looks great now.


Check that Flex Seal. Last I knew it didn't have a UV barrier in it, which obviously is bad for something like a MH roof.

They may have changed the formula, I do not know, but if I was using it on a roof I'd sure want to know!

**Update** I just looked, the description I read said it was UV resistant - assuming I was reading about the one you used.


There are 24 hours in every day - it all depends on how you choose to use them.
Bruce & Jill Brown
2008 Kountry Star Pusher 3910


Tom/Barb

Oak Harbor, Wa

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Joined: 10/16/2009

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Posted: 09/08/22 08:35pm Link  |  Quote  |  Print  |  Notify Moderator

Bruce Brown wrote:

Tom/Barb wrote:

We just finished re-coating our Newmar's roof..
I sanded with 320 grit, and really cleaned the roof.
I removed all the old sealant around all vents and other openings.
After all the cleaning was done I applied 2 coats of white Flex-seal.

Looks great we will see how long it lasts.
cost was about the same as all the other coating on the markets ($109.00)

Our roof was not leaking, it simply looked horrible, looks great now.


Check that Flex Seal. Last I knew it didn't have a UV barrier in it, which obviously is bad for something like a MH roof.

They may have changed the formula, I do not know, but if I was using it on a roof I'd sure want to know!

**Update** I just looked, the description I read said it was UV resistant - assuming I was reading about the one you used.


It says it is..
If it gives us 10 years , I'm good. [emoticon]

Once cured, flex seal liquid forms a durable, breathable, weatherproof, non-slip barrier that's resistant to rain, snow, sun, wind, hail, air, moisture, UV degradation, extreme temperatures and natural weathering.


2000 Newmar mountain aire 4081 DP, ISC/350 Allison 6 speed, Wrangler JL toad.

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