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Old 09-22-2015, 07:35 AM   #1
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Roof bubble while towing

So I happened to look up at the roof while towing this weekend and the rubber roof membrane was forming a small bubble all across the front above where the fiberglass and rubber roof join.

I checked and found the sealant used under the rail caps at the top of roof was cracking/peeling. All I had was some silicone so I used that as a temporary fix. On way back it still had a slight bubble.

Anyone else had this problem and if so how did you fix it?

I was gonna buy some Eternabond RS tape and just do the entire length of both sides of the front, roof and back corner rails. Not sure what width or color to use. Would 3" width be enough? Or should I get 4". Does the tan match our trailers well? I was thinking black since the rails are black. Thanks.
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Old 09-22-2015, 09:17 AM   #2
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The bubble is most likely a failure of the adhesive used to secure the membrane to the underlying plywood combined with high air pressure at the front cap and lower air pressure immediately behind it. Applying tape over the area that is lifting will not fix the problem, that requires removing the front cap, peeling back the membrane and applying new adhesive. But if the bubble is small and does not get larger over time, then repair may not even be necessary. The membrane is secured at the front and sides, by the roof vent and any other roof penetrations, so usually it will not tear or peel back.
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Old 09-22-2015, 12:04 PM   #3
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Ok that sucks. I had a warranty repair a while back where the dealer took the front off for a leak. Maybe their adhesive stopped working properly or they never used any. It just started the buble thing and its been a year to year and half since the repair work.

I thought with the gaps near the top egde of the corner rails that maybe air was getting in that way. I take some pics tomorrow and post them.
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Old 09-22-2015, 01:00 PM   #4
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Don't use pure silicone caulk. It will have to be totally removed for any other caulk, including silicone, to stick to it.
I would take it back to the dealer and tell him about the bubble. Could be the dealers fault for not adhering the roof properly.
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Old 09-22-2015, 01:17 PM   #5
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We had this happen to a previous trailer we had on a long cross country trip. We happen to notice it when we stopped in South Dakota for a few days to see some family. I took it to a local dealer there and they secured the rubber roof by adding about 4 pieces of screw channel running from side to side across the roof about 12" apart. This fix not only held for the rest of the trip but held up till we traded the trailer in for our current trailer. We never had a problem with it bubbling up after that and it was a lot cheaper fix then spending the $$$$ to replace the roof.

Our rubber roof coming loose was caused by a similar problem. We had a leak in the front and the front glass had to be replaced and shortly after that is when we had the rubber roof come loose.
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Old 09-22-2015, 02:31 PM   #6
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I was hoping i could fix this myself. Not looking forward to arguing with dealer about how their prior repair work didn't hold up. Plus they'll likely need to hold it for weeks and want to charge me a buttload for a fix that should have been done right the first time.
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Old 09-22-2015, 02:54 PM   #7
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Novice speaking here...
Could you pop the bubble, inject the proper sealant, squeeze the membrane down (think like a pimple), then seal the hole once all flat?
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Old 09-22-2015, 03:13 PM   #8
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The bubble only forms fron the rushing wind while driving. Then it goes away once stopped. I just don't want it to get huge, like a hot air balloon. I've seen that before on another persons trailer on the highway and it aint pretty.
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Old 09-22-2015, 04:58 PM   #9
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Ah. Sorry, didnt understand that part.
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Old 09-23-2015, 07:23 AM   #10
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You could do what the dealer did on ours and like I said in my last post it held up very well. Here is a link to the screw channel that was used and after they installed it they caulked along the edges and over each screw head to prevent any leaks. We had to have the dealer do the fix because we were on a trip and didn't have the resources to do it ourselves. It cost us less than $200.00 to have the dealer do the fix. Depending on how many pieces you would need, screws and a tube of self leveling caulk I would say you could do it for less than $75.00.

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