Dinghy Floor to Tube Attachment Leak

[sailorboy1]

My dinghy leaks water through a floor to tube seam that has come unglued. I have tried cleaning it up and regluing, but it still leaks. I feel it is time to try applying caulk etc. to the inside to try to seal it. Who has tried this, what did you use, did it work/not work?

[OldManMirage]

I've never had to do something like that but if I were, I'd probably use 3M 5200. It's such a permanent fix for almost anything that you want sealed. Maybe there's something else ? I only use it when I know I have no plans to undo it, know what I mean ?

[Tupaia]

Yes 3M 5200 or Sikaflex 291. Apply smooth covering to both surfaces before joining together.

[tkeithlu]

Ditto. Caulk per se is not likely to hold, because that seam takes a whollop every time the inflated tube hits the water - the floor goes down, the tube goes up, and the seam splits. That's why it split in the first place. Glue the bejabbers out of it, and good luck.

[Jackz]

I just did the same thing using Hypalon glue from Weaver industries

[Dougtiff]

Glue the seam back together and glue a doubler over the reglued area.

[Redline452]

I have used "FinalFix" adhesive (sort of grey putty-like stuff in a caulking-gun tube) on a few air (aft pontoon cone) and water leaks (transom/pontoon/floor) on my Zodiac. I have an older Zodiac 310 with the floor-tube joint failed, will try that this winter. The Zodiiac two-part glue is difficult to use as it would take four batches, FinalFix isn't perfect but does hold if the patched area is clean and dry.

[Oeanda]

5200 did the job for me with similar leak in a hypalon zodiac. I’d do things differently next time now that I know what the stuff is like to work with- super messy slime that takes a couple days to begin to act like glue. I’d also try the fast cure version next time.

[sailorboy1]

Well glued the seam back together as best as could and covered it with Flex Seal paste (messy stuff). Seems to have worked.