I always use 1/2 or 3/8 marine grade plywood that has glue not effected by fairly high moisture content. I after completion seal every surface with epoxy or at times spray with sealer/clear coat. This usually does the job. I never use particle board or MDF, moderate moisture content will warp and swell it. Phenolic is nice, expensive and don't breath the dust or it will mess you us pretty good.Looks good, fellow Formica Monkey! Couple questions, for our future boats: What do you use for substrate? Industrial PB is great as long as it never, ever gets damp. And do you laminate both sides of the substrate to keep it balanced? I don't, up here in the high desert; never had a problem with deformation. It might be useful on a boat in humid coastal areas, tho.
Attractive work. I'm starting to appreciate the use of phenolic laminate in boat interiors. Bob Perry uses a lot of it.