Patching an enclose underbelly

I used a strip of plywood and screws with fender washers at least 4 seasons.

Thanks everyone! The material is some sort of plastic center with black “fabric” on the outside.

I forgot about eterna bond! That stuff is great and that’s what I’ll be using.

Safe travels to all!

TD

On my TT the colerplast stuff was sagging , not from water or anytging , just from being bounced around. I got some galvanized corner beads for sheetrock and smashed them down and used the original bolts and washers to add extra support under the plastic sheets to hold them up nice and snug. So like horizontal cross bracing. This way it had more of a surface area to hold up the sheeting. So, maybe some tape, and reinforcement will work for you.

I used gorilla tape on mine, you just have to clean the area real good first! Works great!

I used to cut a three sided flap with the solid side facing forward. Made sure the opening was wide enough for my shoulders to fit up and into the bottom.Then once finished up inside to reseal the flap I bought 2 inch by 1/2 inch thick wood slat, cut that wood so one inch would lay inside the cut out and one inch would lay where the flap would be and used 1 inch screws to secure the flap back into place. I used 3 pieces of wood to secure the flap. Then used either a quality tape or ran a bead of weatherproof sealant along the slit. If and when I need to get back into that space, the screws were easy to remove and reopen the flap.I made 4 of these under my 5th wheel for repairing either plumbing or slide out rams.

They make Coroplast tape - I haven't tried it but it should work. I have a couple cuts in mine as well. I used what I had laying around. Not great, but hasn't come undone.

klutchdust wrote:
What material is the underbelly made of. If metal of some sort I would pop rivet an aluminum patch .

Usually it is Coroplast - - Coroplast at Lowes

What material is the underbelly made of. If metal of some sort I would pop rivet an aluminum patch .

^^^ What Jerry said..... Dry it all out and apply Eternabond

If you have a fiber insulation in the belly, it should be dried out/replaced. You can make a 3 sided window for a better look, and then purchase an oversized piece of coroplast to cover. Sheet metal screws will hold the cover to existing coroplast.

Jerry