Wet foam

[CTsalt12]

OK-I wasn't sure if epoxy would bond to the foam.  I generally don't have standing water, although after a storm I do get a little but until I'm at the boat.  I think weather strips around the the stern hatch per this thread would help.

On the deck seam-interesting.  Not an area I've spent a lot of time thinking about or working on.  I would think any water that could possibly come in through the rub rail would just drain down to the stringer then back to the stern and bilge.

[mshugg]

Epoxy bonds better than other resins.  Just be sure to rough up the surface before coating.  The hull deck seam is subject to a lot of stress, and depending on the model year different adhesive/sealants were used.  My 1979 CCP had unsealed holes(for injection of foam), so any water that made it past the rubrail had a direct path into the liner.  If you think about it, as your boat cuts through the seas, water can be forced up into the hull deck seam.

[CTsalt12]

Epoxy bonds better than other resins.  Just be sure to rough up the surface before coating.  The hull deck seam is subject to a lot of stress, and depending on the model year different adhesive/sealants were used.  My 1979 CCP had unsealed holes(for injection of foam), so any water that made it past the rubrail had a direct path into the liner.  If you think about it, as your boat cuts through the seas, water can be forced up into the hull deck seam.

Interesting.  Now I know why I have a few holes in my stringer fiberglass encasing, they must've been for injecting the foam.  I knew the PO was not proactive enough to drill and test foam.

[wingtime]

Is this flotation foam or foam inside the stringers?

[CTsalt12]

Is this flotation foam or foam inside the stringers?

Inside stringers

[CTsalt12]

Is this flotation foam or foam inside the stringers?

Correction.  Took a look last night before heading out fishing.  This is flotation foam, not stringers at all.  Not encapsulated in fiberglass, just foam on the corner of hull.  Now I'm a little concerned.  There is also a little moisture in this foam where is meets the bottom and sides of hull.  Likely some water dripping in from rub rail as someone else mentioned.  When I first got the boat 6 years ago the PO had siliconed the rub rail to the gunnels in an area where it was pulling loose, probably from an impact....  I feel like I've been paying for all the screwups of the previous owner who beat the hell out of this boat