Around the globe, UL is a proven safety science leader helping safeguard building products including firestop through special inspection, firestop system certifications and the UL qualified contractor program for installers. We’ve advanced the industry’s drive to achieve both safety and innovation with flexible, customized service options for reliable, cost-effective product testing and certification. Architects, regulatory authorities, manufacturers, insurers, building owners, and others in the built environment rely on UL for services and knowledge needed to enhance public safety, meet regulatory demands, protect brand, and access global markets.