Sealing holes in underbelly

Weldon wrote:
Expanding spray foam.

Get the type designed for use around outdoor ponds, black and strong. Got mine at Ace Hardware..

We prefer tape. Foam can be a real PIA if you ever need to take down the chloroplast. It will expand and encase stuff above it.

What keeps rodents from chewing through the tape?

Aridon wrote:
We prefer tape. Foam can be a real PIA if you ever need to take down the chloroplast. It will expand and encase stuff above it.

I used some spare pieces of Eternabond tape to repair the darco underbelly on my trailer over 10 years ago. Still holding up fine. Probably the strongest spot down there.

They do make a tape product specifically for this purpose.

Atlee wrote:
What keeps rodents from chewing through the tape?

Aridon wrote:
We prefer tape. Foam can be a real PIA if you ever need to take down the chloroplast. It will expand and encase stuff above it.

What keeps them from chewing through the foam or the plastic chloroplast?

They generally look for easy entrance points if they really want in they can get through anything on the RV. We've never had issues, mostly because we aren't low hanging fruit with easy access points.

If you use foam and encase wires and plumbing behind it's going to be a mess if you have to take the bottom out.

Each his own but foam isn't going to stop them any more than tape. You're just removing the easy opportunity by not leaving convenient holes for them to crawl through

Gorilla tape works or RV Scrim Shield tape available anywhere RV parts are sold. Make sure the surface you are applying the tape to is clean. Expanding landscape foam is a good choice as it is a black/dark grey color like the factory OEM stuff and is a filler & adhesive. It's also UV resistant. The foam below is available at Lowes. Tape will not seal penetrations for piping as well as foam. I can't think of a reason not to use foam and you only need a little. It's not like you will be removing the coroplast periodically.