I'm about to insulate my boat throughout and was going to use extruded foam (XEPS) but have a source of essentially free 1/2 inch beadboard (MEPS) that I'd prefer to use to save on expenses.
I've read, though, that the bonding agent in beadboard can absorb water
over time and am wondering (a) how big a risk that really is in this particular application, and (b) whether that was a problem with earlier formulations but not with the current
I anyway intend to paint
over the insulation
with a water
based latex in most areas, and am thinking that between the contact cement on the hull
side and the paint
on the other side, that may serve to sufficiently minimize any absorption that otherwise might occur.