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Old 08-27-2018, 02:11 PM   #1
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Bulge in side wall?

So Iíve noticed a slight bulge in the side of my trailer, anyone know what this is? How big a problem is it? I thought it might just be the fiberglass (I guess?) covering coming undone but it feels solid. One of The tires on that side is flat, would this cause such a problem? Help!
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Old 08-27-2018, 03:00 PM   #2
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Bulging of the sidewalls is typically called delamination and is a sign of the fiberglass separating from the wood backing because of a water leak. I can't really see the issue in your picture but I would air up the tire and see if it goes away. You could be getting a slight twisting effect on the frame from the flat tire.
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Old 08-27-2018, 03:16 PM   #3
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Itís very slight, and Iím not even sure if itís new because itís so slight I may have missed it. If you look at the dirty area the clean area is where itís bulging slightly. How important is it that it be level? Iím guessing pretty important? I was going to try and put some 2x6ís under it but I donít have a truck to move it so I was guessing I would need like a bottle jack to do it. Do these things typically have a jack included? Iím assuming you just put it on the frame like you would a car? Sorry for my ignorance!
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Old 08-29-2018, 06:26 AM   #4
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You will need to jack under the axle. jacking at the frame you'll need to lift it a long way before the wheel will come off the ground. They don't have to be dead on level. I agree with what you have is delamination. Once it starts there's not a good chance of stopping it or fixing it. That's why I won't ever own a fiberglass sided rv again. It caused by a water leak somewhere. Start looking in places above and close to the bulge like door and window openings and roof joints.

There are some videos on youtube of a company that injects new glue into the bad spot then builds a clamp to press the bulge down. Its a complicated process and looks very expensive. Even if you do that you have to find the water source and stop it or your wasting your $$$ and efforts.
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