I’m replacing the holding tank, head, and all waste plumbing on my 1984 35-3. When I first pulled the tank, I noticed some delamination at the bottom of the bulkhead and the tabbing was coming up in a few places. I feared the worse, but after looking closer and peeling off what looks like a thin veneer, the plywood below is solid. The veneer was cut away right above the tabbing, so the tabbing was adhered to the plywood underneath. It looks original, but I’m not sure. The plywood doesn’t indent with a screwdriver and it sounds solid when tapped. There are also two screws (maybe bolts?) under the tabbing that go under the platform in the head so I can’t see the back side.
I’m thinking of sanding the area smooth, saturating with epoxy, and glassing in a layer of 1708. I would extend the glass over a new fillet to create new tabbing. I’m not sure what to do with the screws. Should I replace them and glass over? Glass over the existing ones? Remove, glass, then install new over the glass work?
As found:
After removing veneer:
I’m thinking of sanding the area smooth, saturating with epoxy, and glassing in a layer of 1708. I would extend the glass over a new fillet to create new tabbing. I’m not sure what to do with the screws. Should I replace them and glass over? Glass over the existing ones? Remove, glass, then install new over the glass work?
As found:
After removing veneer: