Sealant to stop leak

[srah1953]

Hi All
I have a significant leak around the keel bolts as a result of a grounding. I'm looking for a sealant that will set in water to block the leak until such time as I get to a yard to make a permanent repair. Ideally, I'd prefer something that didn't have the adhesive properties of Sikaflex so that it can be easily removed later on but if that's recommendation, so be it.
I tried Stay Afloat but that had no effect at all and was quite disappointing.
Thanks

 

[Boathook]

Hi All
I have a significant leak around the keel bolts as a result of a grounding. I'm looking for a sealant that will set in water to block the leak until such time as I get to a yard to make a permanent repair. Ideally, I'd prefer something that didn't have the adhesive properties of Sikaflex so that it can be easily removed later on but if that's recommendation, so be it.
I tried Stay Afloat but that had no effect at all and was quite disappointing.
Thanks

Could try Arbomast BR. If you are able to remove a bolt/nut at a time and and then use the sealant under a large washer and replace the bolt/nut it may work. I have done this for leaks above the waterline when the fitting is letting water through and is also wet from rain.

 

[sailorman]

epoxy putty is all i can suggest

 

[Jabamusic]

CT1?

 

[alahol2]

Another vote for CT1

Damned new software, should have said CT1.

 

[sailorman]

 

[zambant]

CT1?

+1 for CT1 - worked for me in the past!!

 

[Keith 66]

A one part polysulphide such as Arbokol 1000 will stick in damp or wet places, the dryer the better when first applying though! Cheapo polyurethane sealant such as screwfix PU40 or equivalent should do as well.

 

[HunterWanderer]

If you have damaged the boat so much that you have a significant leak thats almost certain to be damage to the GRP lamination and not just a sealant problem. The strength of the grp could be significantly compromised.
I would get the boat out of the water as soon as possible.

 

[just add water]

Go to local pvc supplier,builders supply ask for a tube of lead seal its around £3 appllied with a silicone gun you can even apply it under water it will work a treat to smooth it use a bit of fairy liquid very easy to remove when you come to get her out the water and repair properly
good luck

 

[rivonia]

Does this stuff CT1 set when the surface is damp/wet? need to know asap-have a tiny little drip just before the stop cock (seaward side) so it may be the thing to seal it ?????

Peter

 

[Jabamusic]

Does this stuff CT1 set when the surface is damp/wet?
Peter

Yep.

 

[rivonia]

Can you please advise Will this sealant CT1 set on a wet/damp surface. I need to know asap. I have a very small drip on the seaward side of a stop cock and need to seal it.

Peter

 

[charles_reed]

I've used CT1 - it does take about 96 hours to set fully - but then I was using it as a sealant filler.

It does seem to take on damp surfaces.