Window Sealant - Fiberglass RV


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Old 07-18-2020, 09:28 AM   #1
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Name: Wanderer2
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Window Sealant

Hello,

I just purchased a 1976 Trillium 1300 Deluxe. After days of rain I discovered water in the storage area under the main bed and under the floor, and a bit of water dripping from the front foam padding, which bubbled out. I'm thinking the front window is the source and am going to start by sealing it. Can anyone recommend a good sealant?

Thank You in advance!
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Old 07-18-2020, 10:59 AM   #2
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Trailer: 1978 Trillium 4500, 1979 Boler 1700
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For leaks between the window frame and the fiberglass body, the long term fix (lasts 20+ years) is to remove the window, clean old sealant off the fiberglass body and the back of the window frame and re-seal/re-install with butyl tape (3/4" wide by 1/8" thick).

Any type of caulking is a temporary fix.
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Old 07-18-2020, 11:02 AM   #3
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Also consider the possibility that water is getting in through the belly band. This is a common problem for Trilliums. The fix is documented in other threads.
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