STYROFOAM™ Brand Insulation is the original extruded polystyrene foam insulation.

Invention of STYROFOAM™

In 1941, Dow invented a process for extruding polystyrene to achieve a closed-cell foam that resists moisture. Recognizing its superior insulating properties, buoyancy and "unsinkability", it was originally adopted in 1942 by the U.S. Coast Guard for use in a six-man life raft. That was the start of many other wartime applications by the Coast Guard and U.S. Navy.

Even in the early 1940s, the spirit of the Human Element was exhibited by the Dow research chemist who invented STYROFOAM™ Brand Insulation.