We install open and closed cell Polyurethane spray foam insulation. Either kind will create a true air barrier at the proper thickness, and closed cell with add to the structural strength of the building. We also are installers for polyurea elastomer coatings and/or liners. Our material is sprayed on so there are no seams or folds, creating a monolithic waterproof surface! If used as a pond or tank liner, containment is accomplished.