I'm replacing the head
Y valve on our boat, and the old valve was mounted to the hull
stringer using four coarse thread screws (look like #10 screws to me). The new Y valve has a slightly different screw pattern, so I'm only going to be able to reuse one or two of the old screw placements.
That leaves at least two open holes into the hull
stringer. I'm not quite sure what the stringer material is, but it seems likely to me that if those holes aren't sealed, they could allow moisture into the stringer - seems like they should be sealed.
Am I right? Can I leave those holes open, or should I seal them? Assuming they should be sealed, what should I use?
Thanks for the help. You guys are always awesome.