I've been toying with the idea of using roll cork (various widths, 2'/3'/4'). My career was in flooring (all kinds) and I've done this kind of thing. An adhesive I've though would be great is a tile product, "hydroment Ultraset". It's a rubbery adhesive and crack suppression membrane for stone and tile. It is anti-microbial and forever stuff. Cork is also anti-microbial. Never will have a mildew problem again. Also cork repels insects! Not to mention insulation value...I think it would be fantastic...and beautiful. So many boats have material on the bulkheads and overhead. The material holds moisture and mildews. Nasty.
What do you think?