What does NASA and SPF have to do with each other??
The external tank is the big orange thing you see on the outside of the
shuttle. The orange color is from the UV oxidation to the uncovered
spray foam? PU Foam allows the material in the tank to operate at -423
F.
Watch Spray Foam Withstand 12,700 mph on the Space Shuttle Endeavor
Single Cam view of STS-127 - External Tank. We love this movie because
it shows uncovered spray polyurethane foam standing up to 12,700 mph
travel on the space shuttle. No wonder spray foam makes such a great
commercial roofing system.
