Manufacturers		Website: www.derbigumus.com Derbigum Roofing Solutions (DRS) has been manufacturing high-performance DERBIGUM® modified bitumen roofing systems for over 30 years. Over 5 billion square feet of Derbigum® roofing membranes are in place worldwide. DRS is the industry leader in the application of cold-process modified bitumen membranes with PERMASTIC® Adhesives. PERMASTIC® and DERBIGUM® systems carry UL and FM rated approvals. The systems have also passed the most important test… in place roof top performance. During the last decade, over 60 million square feet of PERMASTIC® and DERBIGUM® applications were put in place across the United States. These applications have provided superior performance for discriminating building owners and property managers. New application techniques and equipment keep jobsites cleaner, safer, environmentally sound, and enhance productivity. This saves time and money by allowing the roofing contractor to move quickly and complete your job in less time.