J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment thru-hulls and seacocks

Sam,

When I recored Rhapsody I found that they were fused with the skin. Not sure if it was epoxy or 5200 they were put in with. I ended up reusung the engine intake by leaving the outer skin and valve in place. The inner skin and core were ground out, epoxy isolated and new inner glass skin applied.

If you are replacing them and they look "permanent" I would cut around it using a hole saw from the outside and go straight through. Bevel the outer edge then glass on a new skin and fair it. Fill the void from the inside with thickened epoxy, and slap on a couple layers of glass. You now have a solid epoxy isolated area to drill for the new through hull and sea cock.