You can get 4x8 boards of this stuff at Home Depot. I use some that has a
foam core, foil on one side and white vinyl on the other to insulate the
windows in my pilothouse when I'm not underway. Foil faces out. In summer
the inside surface temp of the glass is about 135 degrees without the
insulation, about 85 with. My electric bill went from over $100/month to
about $35.

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Keith
__
"Bachelors know more about women than married men; if they didn't, they'd be
married too." - H. L. Mencken
"MLapla4120" wrote in message
...
And when it comes to closed cell foam, I see no problem with
white insulating board, maybe with a foil backing.
Sco

Where do you get this stuff?