"Joseph Meehan" wrote in message

I would avoid Styrofoam. Get that stuff hot as in a fire and it is
very very nasty. You also will be required to take certain precautions to
meet building code if you use it. I don't know how much better the pink
is but it has to be better.

The products of combustion a soot, water, carbon dioxide. No worse that
what an oil burner puts out. As for special precautions, it only has to be
covered with sheetrock. The foam is a modified material that will not burn
unless there is another source of ignition.

Houses are being built with eps foam on both the outside and inside. Take a
look at www.polysteel.com or www.integraspec.com Very energy efficient,
very quit, extremely strong.