Leaking windows - Fiberglass RV

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Old 02-16-2009, 07:50 AM   #1
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Trailer: U-Haul
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I am very happy to be a new member of your group.
I have a 1986 13 ft U_Haul trailer and almost all my windows are leaking.
What can I do to fix them or where can I by new ones?

Hélène from Montréal

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Old 02-17-2009, 01:06 PM   #2
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It depends on what is leaking. The window itself or the installation of the window to the trailer. If it's the window there are repair parts available for most windows. If it the install they will need to be removed and properly reinstalled.

There is info on this site about window fixing. Do a search on window repair or installation.

1979 Boler B1300 | 1987 Bigfoot 5th Wheel | 1988 Bigfoot 5th Wheel | We officially have a collection!
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Old 02-17-2009, 01:35 PM   #3
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I'm not familiar with U-hauls, but as Lizbeth pointed out, it depends if your windows are leaking around the outside frame, or within the panes themselves. Layers of silicone sealant around the outside frame, for example, are a clue that there could have been long-term leakage that was just masked by a previous owner. The right way to fix this is most likely to remove all silicone, remove the window, then reinstall it using butyl tape, and you should be good to go for another 20 years.
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Old 02-17-2009, 05:01 PM   #4
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Trailer: 1974 Boler 13 ft (Neonex/Winnipeg)
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I didn't reply earlier because I feel like I remember that the U-haul side windows use a rubber gasket instead of a flange that you'd use butyl tape on. Helene, can you post a photograph of the windows in question? (Or even find one on the web that looks like yours, so we can see.)

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Old 02-17-2009, 05:51 PM   #5
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Look for weep holes on the outside bottom of the windows to make sure they are open. This only applies to metal frames. If the weep holes get plugged up some water may enter the window.

Could it be possible that you have condensation on the inside of the glass? If the camper is airtight and people are in it, it creates condensation on the inside.
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