Construction Vapor Barrier Films are produced from a combination of LDPE, HDPE and necessary additives and are manufactured in high thickness to prevent the quick evaporation of concrete moisture and also to control radon gas, methane, and other soil gases or contaminants from penetrating into the concrete mass. This film which is produced from best selected virgin material, should be laid on the foundation soil prior to concrete pouring process or placing concrete slabs. Other additives such as flame retardants could be added based on customer’s request.