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Old 02-05-2017, 09:11 PM   #1
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Roof Bubble

Sorry if this question has been answered already in another post.

Is a roof bubble a bad thing???

Our 07 Bounder has about a 3 foot section of roof material that seems to be loose from the under surface. It is intact, not ripped, but this section is in front of the lead AC and we wonder why the rest of the roof seems bonded but this is not.
Could it indicate a leak? How can we get to the AC flange to check it?

Any help is appreciated.

Richard & Violet
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Old 02-05-2017, 10:06 PM   #2
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Originally Posted by BLE373 View Post
Sorry if this question has been answered already in another post.

Is a roof bubble a bad thing???

Our 07 Bounder has about a 3 foot section of roof material that seems to be loose from the under surface. It is intact, not ripped, but this section is in front of the lead AC and we wonder why the rest of the roof seems bonded but this is not.
Could it indicate a leak? How can we get to the AC flange to check it?

Any help is appreciated.

Richard & Violet
I would say moisture/leak/ delamination. That is reason I am redoing mine this year. Either way, you will be making a decision on whether to slit, inspect, re-glue and patch kinda depends on condition of material at this point, or ignore. Ignoring is not wise.
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Old 02-06-2017, 02:35 AM   #3
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x2 what Crazee1 said.

My AC is removed by taking the inside grill down. With the grill off the wiring and mounting bolts are accessible.

I would recommend repairing, sooner the better. I neglected a roof leak on a DP I had years ago and regretted it when the water got into the side wall and caused the fiberglass panel to delaminate.
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Old 02-06-2017, 04:05 AM   #4
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https://rvroof.com
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Old 02-06-2017, 07:58 AM   #5
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Thanks for the commercial.
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Old 02-06-2017, 08:02 AM   #6
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Thanks for the AC removal procedure.
Then the bubble means we have a roof leak at the first AC which caused the roof material to delaminate in that area.
We will check this out ASAP.
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Old 02-06-2017, 12:40 PM   #7
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I would look into it, but it does not mean that you have a leak. Since it is in front of the front AC unit, it could be that the adhesion was not complete or good in that area. Just normal driving can cause a turbulence in front of the AC unit and possibly lift the TPO, causing the bubble (aerodynamics). If you find there is no damage under the bubble, just apply the correct glue, under the loose material, and roll it down. Make sure you use the recommended glue to not harm the roofing material.
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Old 02-06-2017, 01:15 PM   #8
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If this will be a DIY project, removing the AC and all, get yourself a new seal kit for the AC. Inspect the roof and note that delaminated plywood (if that's what's up there...I don't know about yours, I do know some RVs have plywood) can be restored using special, and no doubt expensive, marine adhesives so if there is a marina nearby they'd be a good resource to look into for adhesives.

Also check Amazon for Eternabond tape if you just end up slicing the roofing to burst the bubble. It'll seal up the cut forever.
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Old 02-06-2017, 05:55 PM   #9
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If this will be a DIY project, removing the AC and all, get yourself a new seal kit for the AC. Inspect the roof and note that delaminated plywood (if that's what's up there...I don't know about yours, I do know some RVs have plywood) can be restored using special, and no doubt expensive, marine adhesives so if there is a marina nearby they'd be a good resource to look into for adhesives.

Also check Amazon for Eternabond tape if you just end up slicing the roofing to burst the bubble. It'll seal up the cut forever.
True, but if you do not re-glue the TPO to the roof sub-sheeting, it will just billow again.
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