OK, so now I am rethinking some of this. I have been researching insulation, foam, carcinogens, off gassing, flammability, etc…
What about cork up against the fiberglass hull, covered by mold/mildew resistant material such as the Formica? I found this link helpful:
Show me your sailboat's interior
Part of me wants to believe we’ll never have to worry about fire because we’re careful people AND there’s so much frikken Styrofoam and other carcinogens in our lives anyway that the exposure to it is going to happen anyway. I’ve seen that argument from people on here plenty.
Then there’s the other side, (I’ll fall back on Sailingdog’s thoughts), the train of thought that I’m really more drawn to. Why not try my best to expose myself, my wife and my new baby girl to the absolute least bad stuff possible. It’s a no brainer! Here’s the thing though; it’s hard to know what that is.
Just give me the answer somebody! Tell me what’s best for goodness sake! Oh, and please make it cheap, easy to work with and permanent but removable.
Looks like I’ll be taking back a sheet of rigid foam board insulation and ordering a roll of 100% cork instead.