Cellofoam® EPS (expanded polystyrene) insulation performs. It's R-value is stable and predictable; it won't drift down as the years pass. Plus Cellofoam has the compressive strength and the inherent moisture resistance to withstand forces that can destroy other insulation products.

The insulation is easily trimmed with hand tools to fit your specific application, yet it has the strength to absorb normal job site abuse.