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Old 05-11-2021, 07:52   #1
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Dinghy Floor to Tube Attachment Leak

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?
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Old 06-11-2021, 04:29   #2
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Re: Dinghy Floor to Tube Attachment Leak

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 ?
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Old 06-11-2021, 04:46   #3
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Re: Dinghy Floor to Tube Attachment Leak

Yes 3M 5200 or Sikaflex 291. Apply smooth covering to both surfaces before joining together.
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Old 06-11-2021, 05:12   #4
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Re: Dinghy Floor to Tube Attachment Leak

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.
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Old 06-11-2021, 09:06   #5
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Re: Dinghy Floor to Tube Attachment Leak

I just did the same thing using Hypalon glue from Weaver industries
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Old 06-11-2021, 11:03   #6
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Re: Dinghy Floor to Tube Attachment Leak

Glue the seam back together and glue a doubler over the reglued area.
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Old 07-11-2021, 19:36   #7
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Re: Dinghy Floor to Tube Attachment Leak

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.
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Old 08-11-2021, 03:20   #8
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Re: Dinghy Floor to Tube Attachment Leak

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.
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Old 16-11-2021, 05:41   #9
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Re: Dinghy Floor to Tube Attachment Leak

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