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Roof "Bubble" Disturbing

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JoeyD

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Roof "Bubble" Disturbing
« on: August 13, 2016, 12:29:14 pm »
Hi Cruisers... I went on my roof to pressure wash it today and was quite disturbed to find that the roof has separated (bubbled) the entire length of the coach on both sides. It's like the edges were not properly "glued".

Anyone seen or heard of this happening?

Joe

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JoeyD

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Re: Roof "Bubble" Disturbing
« Reply #1 on: August 13, 2016, 12:42:14 pm »
BTW... I did search the forum to find that several people had a similar issue but could never find if anyone was able to resolve it.

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Ron Dittmer

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Re: Roof "Bubble" Disturbing
« Reply #2 on: August 13, 2016, 01:24:37 pm »
I noticed a few small areas where there is an air between fiberglass and underlayment.  It has been that way for 9 years and has never been an issue for us.

It could be that the roof is required to "float" over the underlayment similar to vinyl flooring on kitchen floors.  Maybe if the fiberglass was 100% glued-down, during changes in temperature, it could buckle because the expansion rate of the fiberglass is different than the material under it.  I am trying to second guess this.....not sure, just presenting a possible reason for it.
Ron (& Irene) Dittmer

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gradygal

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Re: Roof "Bubble" Disturbing
« Reply #3 on: August 13, 2016, 02:08:03 pm »
Joe,
I have been up on the roof many times and on each side, there is an 8-10" section that flexes when walking on it. I understood that it is designed to flex. Do you have bubbles??? Do you have pictures.

I have never pressure washed my roof. I do get up there with a hose, brush and cleaner.

George
Judi and George Nicholson
Punta Gorda FL

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JoeyD

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Re: Roof "Bubble" Disturbing
« Reply #4 on: August 13, 2016, 03:26:25 pm »
Thanks Ron & George...
Maybe I shouldn't refer to it as a bubble. The air space actually runs along the edge of the roof on both sides. From the edge to the center it is probably 10" and runs over halfway from the front to back on both sides. I guess it might make sense that it flexes George, I just don't remember it the last time I was on the roof.

Joe
 

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SweetWaterSurprise

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Re: Roof "Bubble" Disturbing
« Reply #5 on: August 13, 2016, 10:18:31 pm »
I have that same flex areas, and found it to be normal

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RKS

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Re: Roof "Bubble" Disturbing
« Reply #6 on: August 14, 2016, 08:18:42 am »
I had to call Phoenix the other week about our light under the stairs going on and off by itself and while talking to Bob asked him about the air pockets that I had also noticed while cleaning the roof.
He indicated that they attach the fiberglass sheeting by spot glueing it to hold it in place and then seal the edges so the air pockets are normal.
For the light they have sent a new control module.
Bob and Michele
Previously owned a 2350 Sprinter