Allen wrote: "It also degrades in the sun and eventually powders on the surface."
Reply: I'll concur it "powders" but after three years I can't really say it has any structural defects that would limit it's use due to the powdering.
Mostly I wanted something cheap (10 sheets from a 4x8, $19.99 purchase) that would not warp or require painting. Given a longer term experiment, I may paint a few to see if the paint sticks. The first thing to go is the thin plastic coating on the insulation board.
Grant
Jackson, MO
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