Division 7 Construction LLC. is a Specialty Contractor that serves the Birmingham, AL area and specializes in Air Barriers, Below Grade Vapor Retarders, Bentonite Waterproofing, Blown Insulation, Built Up Bituminous Waterproofing, Dampproofing, Firestopping, Fluid Applied Membrane Air Barriers, Fluid Applied Waterproofing, Joint Protection, Joint Sealants, Preformed Joint Seals, Sheet Waterproofing, Traffic Coatings, Waterproofing, Weather Barriers.