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post #12 of Old 05-28-2013
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Re: LifeCaulk vs. 3M 4200

Originally Posted by Maine Sail View Post
I would be checking for "tracking leaks". These are leaks that track through the deck or between the deck and liner and come out at an area that is not at all where the water went in.
Good point but there is no liner in my boat at this location, right at the toe rail. Just the bare deck...

Originally Posted by Maine Sail View Post
If the deck has been potted care must be taken to make sure there is minimal to no movement in the chain plate and that the butyl is in compression, (really packed in) if using butyl....
That is actually why I went to the Lifecaulk, because I thought that the puny screws holding down the cover plate would not really put anything in compression. I rebedded the cleats with the butyl tape, where the through-bolts put down a lot of force, and haven't had any issues there. I thought the slightly adhesive character of Lifecaulk might help in this case but, as I said, it did not really.

So I will definitely add the groove but am still not sure if I should use butyl or Lifecaulk.
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