"Dan Listermann" wrote in message
...
I have a 14" heavy duty john boat. The boat came with foam under a thin
metal deck. The foam was saturated with water and disintegrated. I don't
think I can get the exact same foam thickness to reinstall the metal deck
and I don't care for the look of the metal sheeting. I realize that
marine plywood would be best, but it is hard to find and is expensive. I
would need two sheets. Is treated 1/2" plywood acceptable?
I use exterior fir rather than pay for marine ply. The difference is marine
ply has more plys and is solid cored, and twice the price. The exterior fir
is constructed with waterproof glue and marine ply is fir.