How to seal holes between frame and fiberglass body? - Fiberglass RV


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Old 07-17-2017, 03:59 PM   #1
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Name: Frederick
Trailer: 1974 Perris Valley Pacer
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How to seal holes between frame and fiberglass body?

I need to seal the hole in the fiberglass body and wooden floor where the frame bolts pass through to keep water and bugs from entering. I am considering adding a rubber gasket or something from the underside but I'm concerned this will create an inconsistent surface between the frame and body. I could fill the hole with butyl putty but that seems crude. Does anyone have any experience with this?

Thanks
Fredomatic
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Old 07-17-2017, 04:14 PM   #2
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I would use Lexel or Dicor calking it will soak in some and seal the wood.
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Old 07-19-2017, 09:32 AM   #3
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Thanks Steve!


Sent from my iPhone using Fiberglass RV
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Old 07-21-2017, 12:56 PM   #4
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Keeping it clean

Consider using a credit card to keep the edges nice and clean. Scrape along the joint at an angle. I will sometime wet the card to help smooth the joint.
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Old 07-21-2017, 02:03 PM   #5
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Originally Posted by stevebaz View Post
I would use Lexel or Dicor calking it will soak in some and seal the wood.
I also have had good luck with Lexel
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Old 07-21-2017, 04:20 PM   #6
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Name: K C
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Remove the bolts, then using a small artist brush apply thin epoxy onto the exposed edges of the bolt hole in the plywood and let it cure. That will help prevent moisture from wicking into the end grain of the plywood. Next reinstall the bolts using marine bedding compound inside of the plywood holes. The bedding compound will also keep moisture out of the layers of plywood as it takes up the space between the bolt and the hole in the wood. As you push the bolt in and tighten it down the bedding compound will also squeeze out from the hole and seal the area between the frame and the fiberglass. The bedding compound is a good choice as it last for a great many years while allowing the bolts to be removed if needed.

This method will serve you a lot better over the lifetime of the trailer than relying only on an application of caulk. There is a lot to be learned from how water is kept from entering a boat
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Old 07-22-2017, 12:42 PM   #7
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This is great information! Thanks everyone.

Fredomatic
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