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Author Topic: Insulation underbelly repairs  (Read 460 times)


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Insulation underbelly repairs
« on: January 03, 2018, 10:54:44 AM »
Hey gang,

I got my fifer to its new home and while I was preparing to move it I noticed some of the underbelly insulation protection needs attention.  The camper has a sub-zero insulation package.  Insulation is not hanging down but a couple of the taped joints are needing attention.  Where do I find the six-inch tape with the right adhesive to make these simple repairs? 


Frank B

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Re: Insulation underbelly repairs
« Reply #1 on: January 03, 2018, 02:54:39 PM »
I see that no one has responded, so here goes...

I am not an expert in this, but I doubt the ability of ANY tape to keep a joint sealed on the bottom of a trailer exposed to the elements. Obviously, whatever the factory used is not working either.  :)

The units I have owned that had underbelly sheeting used coroplast sheets, which is basically plastic cardboard. I would be tempted to try a more robust repair that has some mechanical strength to it as well. Perhaps a strip of coroplast to cover the joint, held in place with urethane (not silicone) glue and sheet metal screws?

I will certainly bow to anyone else with more experience in this.

Linux:  Free, open, elegant.
06 GMC 3500 Duramax crew/long pulling 2010 Arctic Fox 30U with 1700 lb Reese Titan Class 5.
1.2 kw solar


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  • Posts: 60
Re: Insulation underbelly repairs
« Reply #2 on: January 03, 2018, 03:24:05 PM »
Look for one of these:
- Gorilla Tape
- Mobile home underbelly repair tape
- Flex mend tape
- Belly Tape
35' 5th


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  • Western KY for now.
Re: Insulation underbelly repairs
« Reply #3 on: January 03, 2018, 06:53:29 PM »
Nobody will see these repairs, so go with an aggressive tape like TooTall suggested.  Go across the area with 6 - 8 inch or longer strips of tape.  Overlap a bit.  It should hold a good while since it appears it is not moved often.  When it fails, retape.
Preacher Gordon, DW Debbie
09 Grand Junction 35 TMS  Progressive HW50C
Andersen Ultimate hitch
2013 F350 Lariat LB SRW Supercab diesel 4X4   TST TMS  Garmin 760
Nimrod Series 70 popup (sold)
It's not a dumb question if you do not know the answer.


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Re: Insulation underbelly repairs
« Reply #4 on: January 03, 2018, 08:39:36 PM »
I would think Eternabond would work even tho most use it on the roof.
Keven Jansen
'06 Chevy 2500 Duramax
'02 Montana Big Sky
Alexandria, Mn