Advice needed on delamination repair
One sidewall of the cabover of my Class-C had a lot of delamination. The previous owner had apparently replaced the Filon and luan in this area before, so I just took off the edge molding and pried of...
Forum Discussion
I had to do a similar repair to the front and rear edges of the sidewalls of a previous 5th wheel. Forest River-claimed "aluminum construction" actually had plenty of wood studs inside.
I used products from Rot Doctor to harden up what wood studs and plywood were left that I couldn't tear out and replace (CPES product) and the built back up the holes / gouges with their epoxy.
Then I used Gorilla glue and new luan to re-attach the outer fiberglass. It held for years and sold it without any leaks coming back.
I think your approach looks good as I understand you don't have any wood (left) but all aluminum and styrofoam, so you don't have a wood problem (other than the luan) but need an adhesive that will work with the foam.
My only other thought is to try and figure out where your leak was coming from in the first place. I double covered the corners and edges of that 5th wheel with Eternabond as I didn't trust sealant anymore.
I used products from Rot Doctor to harden up what wood studs and plywood were left that I couldn't tear out and replace (CPES product) and the built back up the holes / gouges with their epoxy.
Then I used Gorilla glue and new luan to re-attach the outer fiberglass. It held for years and sold it without any leaks coming back.
I think your approach looks good as I understand you don't have any wood (left) but all aluminum and styrofoam, so you don't have a wood problem (other than the luan) but need an adhesive that will work with the foam.
My only other thought is to try and figure out where your leak was coming from in the first place. I double covered the corners and edges of that 5th wheel with Eternabond as I didn't trust sealant anymore.
