How long has high density urethane been around?
High density urethane has been used commercially as exterior insulation starting with the Saturn S-II moon launch vehicle in 1964, and as exterior insulation on the Alaskan Pipeline in 1970, still in service. Currently, in addition to being used as insulation for homes, water heaters, refrigerators, and freezers, it is used for signage, tooling, model making, boat building, and in many other places. Urethane is very versatile and track proven. Precision Board has been manufactured by Coastal Enterprises since 1972.
