My Edson pedestal has a 1" grab bar that carries the wiring from an instrument pod down through the deck and I have not been able to seal it up. Any suggestions on how to stop the leak?
Your drain/weep hole needs to be at the lowest point. Otherwise you just create place for water to pool and rust out the metal.drilling a drainage hole above that point.
Here is a photo of the connection (sister ship). The base is a 2-bolt nylon base socket that the bar slides down into. There is a ¾"ø hole through the deck under the base for the nav-pod wires to pass through and that is were the water gets into the boat. The most recent effort involved rebedding the base with Bed-it between the base and floor. Then wrapped Bed-it around the wires until the mess was bigger than the diameter of the socket and then stuffed it into the socket. The bar was then wrapped with Bed-it and instated into the gob of butyl in the socket and trimmed the excess off with a plastic razorblade. It leaked.Your drain/weep hole needs to be at the lowest point. Otherwise you just create place for water to pool and rust out the metal.
I am having an issue imagining the structure. I bolted down my binnacle guard to the deck. Used fresh bed-it to seal the bolt holes and deck fittings. No leaks for 5 years.
The edges of the hole is sealed and the core is dry so that is not a problem. The water is just running down the wires and dripping into the quarterberth.You may have to fill in the hole with epoxy resin, similar to a stanchion base, and redrill the holes. Any chance that the water is migrating from the pedestal bolts?