Originally Posted by porkpiehat
I bought a hypalon patch kit with hypalon glue and hypalon patches, sand paper. I haven't moved forward with it yet because:
-last weekend it was still bubbling the internal sealant.
-It has been cool and rainy here.
-as mentioned the awkard positioning on the underside of the boat gives me pause; and...
-I was still hoping the 3M 5200 or Rustoleum LeakSeal spray rubber solution would get the thumbs up from someone
It is supposed to remain cool and rainy for the next week and I thought the hypalon glue needs 70 degree temps (F) to cure. But my hands are your instruments and I'm all ears.
If it has to wait for warmer weather, is there a shorter-term fix so I can take my buddy fishing this saturday?
Thanks for the help!
Gluing is more dependent on humidity than temperature. It needs to be below 65% RH. Gluing in the rain or in direct sunlight will result in premature failure.
3M 5200 and Rustoleum LeakStop have no place on an inflatable boat.
The only way to repair the boat is to reglue the seam.
You could probably reglue it with one part glue, but the strength and longevity will be poor.
Try to get in there with some 60 or 80 grit sandpaper to sand both pieces of hypalon. Wipe the dust out with a rag of toluene. Then wipe it again. And wipe it again to be sure...allow about 10 min between wipings to ensure evaporation of solvents.
After the toluene has evaporated, apply the glue with a fine brush. I recommend an artist's brush rather than a chip brush in your case. Trim the bristles so they are about 1/2" long. Then simply paint an even coat of glue on all surfaces. Work very quickly with deliberate, quick strokes. Don't just "pack glue in".
Most 1-part glues specify a 20-30 min cure on the 1st coat. On the 2nd coat, allow 5-15 min for curing before pressuring the pieces together.
I recommend having some vice clamps ready with some wood blocks. After the gluing is complete and you have burnished the unglued spot together, fold the material over itself, then position the wood blocks, and clamp them down. Allow 2-3 days for maximum cure strength.
FYI, this gluing should be done while the boat is uninflated.