The utilization of “pre-formed” asphaltic, rubberized and plastic sheet membranes provide a reinforced factory controlled membrane thickness. Pre-formed asphaltic membranes allow for waterproofing in areas inaccessible to our hot liquid asphaltic kettles and also permit immediate backfilling upon application. Our experienced field personnel have the necessary manufacturer’s training to detail these membranes through a variety of applications. Our crews have installed these products to waterproof some of the most demanding structures. Pre-formed sheet membranes allow for waterproofing in areas inaccessible to our hot liquid asphalt kettles and also permit immediate back filling upon application.