A closed cell expanded polystyrene (EPS) void form material for use under grade beams and other concrete elements to compensate for frost and moisture-induced swelling of underlying soils that might otherwise lift or fracture concrete foundations. It will support up to 1 meter (39”) of fresh concrete.

FROST CUSHION reacts to subgrade uplift by deforming and collapsing at a much lower stress than “solid” void form products and therefore is an excellent choice for protecting grade beams under lighter wood frames and metal structures.

We stock various sizes of FROST CUSHION in both 4-inch and 6-inch depth.

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