Originally Posted by Stumble
NEVER, EVER, EVER use 5200 on anything on a boat. Unless you have seperated the deck-hull joint, there is no equipment that should be bedded down with 5200. It is a permanent, as in can't ever be removed bedding, that typically involves cutting away at the underlying fiberglass to break something free.
If you need something that permanent use epoxy. For everything else 4200, or 4000uv if it's exposed to the sun.
I'm sorry but this is a very pervasive myth in the marine world. I've used 3 CASES of 5200 on my 2 boats over the years
and NEVER had any trouble getting it off. There are even rumors that is can hold an unbolted keel on. Rubbish! I used it to bed my keel and it came off without even a whimper.
Also, if the rumors of 5200 fusing atoms together were true, do you every plan to take the bow eye off?
That said, there's nothing really wrong with 4200, or lifecaulk....