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Old 04-22-2017, 08:45 PM   #1
Junior Member
Join Date: Mar 2017
Posts: 7
How to safely open and work in the underbelly on my 2002 skyline.

Ok. Another good idea with unintended consequences <sigh>.

We bought a used 2002 skyline 5th wheel and remodeled it so we could camp in comfort. During the remodel I thought I would be proactive and add a much bigger battery box so we could dry camp for a much longer time.

Unfortunately I blocked access to a fresh water PEX pipe in the front corner of the basement. Well, you are familiar with Murphy's Law and now that pipe is leaking so I've decided to reroute that pipe so I can get to it if I need to .

The challenge is the pipe 90's down and goes out of sight into the underbelly. I checked under the trailer but I don't see an obvious method of accessing the plumbing in the underbelly. My underbelly cover is a kind of woven black plastic sheet so it's not like the solid underbelly pans that are screwed on. The holding tanks are below the plastic sheeting so much of the area I'd need to work in is above a holding tank. On investigation I can feel something like soggy insulation under the spot the pipe is leaking. When I look in the basement I can see here the fresh water comes up through the floor and goes to the shower and vanity sink but those pex pipes aren't any where near where the fresh water pipe goes into the floor of the basement.

So the question. What is the most efficient way to open up the insulated underbelly so I can get access to the plumbing? It would be pretty simple to just cut that black plastic sheeting and work on it but I expect getting it closed back up properly wouldn't be as easy. Could I open the floor of the basement and work on it from there? Or is cutting into it from underneath the only way?

Thanks in advance for the time you spend sharing your wisdom.


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Old 04-23-2017, 01:26 AM   #2
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Join Date: Jul 2002
Location: Arvada, CO
Posts: 176
I have cut mine with a sharp knife, and repaired same cut with "good" tape. I think I used the gorilla tape, but something better than duct tape for sure.

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Old 04-23-2017, 06:37 AM   #3
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Join Date: Apr 2011
Location: Upstate NY
Posts: 17
Cut out a section large enough to make the repair. Remove the wet insulation and replace with new/ dry insulation. You can purchase the same material in a Lowes or Home Depot, cut a piece 6 inches larger so you have the overlap needed to secure. I purchased from a auto supply some black plastic "push Pins", the type where you drill a hole the size of the pin through the repair piece and the underbelly, push the pin through both to secure. Now you would have future access should something else happen.
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