What is extruded polystyrene foam (XPS)?

Extruded polystyrene foam, commonly known as XPS, is a rigid foam insulation material with a closed-cell structure. It is manufactured by mixing polystyrene resin with additives and blowing agents, then extruding the mixture through a die to form boards. This process creates a uniform, smooth-skinned board known for its high compressive strength and low thermal conductivity.


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