AMC Foam Frost Cushion, 4x48x96
Frost Cushion is manufactured from inert closed cell expanded polystyrene (EPS). It is used under concrete grade beams forming voids to compensate for frost and moisture-induced swelling of underlying soils that might otherwise lift or fracture the concrete structure. Frost Cushion will not collapse due to water absorption. It resists soil movement into the void space. Frost Cushion has excellent resistance to freeze/thaw and has low moisture absorption properties. It is not biodegradable and has no pest nutrient value.