The AYR-FOIL CA2P is a vapour barrier & reflective insulation. The coated reflective surface of the CA2P is especially designed to be in direct contact with concrete. Installed onto rigid insulation panels, product will give an optimised performance with poured-in radiant water heating systems. Application: Under concrete slabs or Poured-in radiant water heating systems. Dimensions: 48 in. x 125 ft.