underside coming loose

[cunker]

We recently traveled about 5000 miles (trip out West) and have noticed the whole underside in the back of our 2005 Surveyor has come loose. My husband tried to duct tape it up, but that didn't work. We can see about four layers hanging down. This has also caused the trailer to bubble up back where the spare tire stays. Any suggestions?

Also- we had a couple of flats that damaged the underside where the tires are. We have two holes now on each side... foam even fell out. Any ideas for repair on this?

Thanks,

[Bama Rambler]

You can buy the coroplast that covers the underbelly and the styrofoam. Usually the best place to get the coroplast is a local sign shop. They use it a lot and you don't have to worry about shipping big sheets of it. In ours the styrofoam just lays on top of the coroplast covering. Just replace what's messed up and screw it all back down. As for the tire damage it'd be good if we could see pictures but I'd probably just take some thin sheet metal and form patches out of it and silicone and screw them in place.