stanchion sealant

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George Dubose

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Aug 2, 2026, 7:00:01 AM (yesterday) Aug 2
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Hello Gentlemen,

This winter I will be rebedding my stanchions. I last used butyl rubber
but that seems to fail in two spots.

I will pull all the stanchions, but I am not sure if I want to use
Boatlife caulk or its liquid form or one of the Sikaflexs.

Any suggestions?

George/Skylark

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George DuBose
www.george-dubose.com

Wiedstrasse 16
D-50859 Cologne
Germany

Last Resort

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Aug 2, 2026, 10:54:56 AM (yesterday) Aug 2
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I used 4200 on all 6 of my stanchions and have had no issues or leaks.  Trick was to just hand tighten them down, wait 24hrs to cure, and then making sure the screws DO NOT move with the help of a 2nd person, tighten them down hard compressing the now made 4200 gasket. Works great. 

Dave Cole

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Aug 2, 2026, 8:02:59 PM (16 hours ago) Aug 2
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Several years ago I had to repair several deck locations on my 10M due to water infiltration.  I was short on time and couldnt easily buy 4200.   I had some clear polyurethane sealant I had used for other projects, bought at Menards, and it was rated for above and below waterline.  So I used it.  It worked very well.  Still, if you can get 4200 easily, Id just use that.  Its a known entity.    The 3M 4000 UV is supposed to be better than 4200 sealant for sunlight resistance. 

Dave
10M #26

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