TERRAFOAM is an inert closed cell expanded polystyrene (E.P.S.) insulation material. It has excellent resistance to freeze/thaw and has zero capillarity and low moisture absorption properties. TERRAFOAM will never rot, or support mold or mildew. TERRAFOAM is suited to a wide range of applications because of its excellent physical and chemical properties, and economical cost. It is manufactured in a range of densities, in order to meet specific application requirements. Standard sheet sizes are 2’X8’ (610mm x 2440mm) and 4’X8’ (1220mm x 2440mm), but TERRAFOAM is also produced to custom sizes, with edges plain or shiplapped. TERRAFOAM contains ordinary air; not refrigerant gases. This means that insulating properties do not degrade over time.