VaporBlock® 15 mil is a high performance
underslab vapor retarder designed to retard moisture migration through concrete slabs on grade. VaporBlock 15 is made from high quality polyethylene resins that provide superior physical and performance properties that far exceed ASTM E-1745 (Plastic Water Vapor Retarders Used in Contact with Soil or Granular Fill Under Concrete Slabs) Class A, B and C requirements.