Some great tips! magicbus, I had never heard of encapsulated batts -- I will definitely look into that. John, I could not determine whether Rockwool sheds moisture -- have you used it in similar applications?
And Steve, they say that EPS closed cell extruded polystyrene panels don't retain moisture -- is that not true? For example, a styrofoam ice chest seems to be perfectly dry after the ice water is poured out.
Agesilaus, I was also not aware of the alternatives to Liquid Nails. I like the idea of cementing the foam into place. The only downside is if I have to remove the stuff in order to fix a problem with the fresh water tank.
