Foamglas Insulation:
A Great Option for Below Grade

For below-grade applications where moisture resistance and high compressive strength are needed, extruded polystyrene (XPS) and, to a lesser extent, expanded polystyrene (EPS) have long dominated the insulation market. But there are growing concerns both with the brominated flame retardant HBCD used in XPS and EPS and with the global warming potential of the blowing agent used in XPS (see “Polystyrene Insulation: Does It Belong in a Green Building,” EBN Aug. 2009, and “Avoiding the Global Warming Potential of Insulation,” EBN June 2010).

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