With a proven commitment to quality and performance, DECRA Roofing Systems has over fifty years of experience manufacturing and marketing stone coated steel roofing systems. DECRA Roofing Systems are manufactured in Coron......With a proven commitment to quality and performance, DECRA Roofing Systems has over fifty years of experience manufacturing and marketing stone coated steel roofing systems. DECRA Roofing Systems are manufactured in Corona, California at a state of the art manufacturing facility registered by UL to ISO9001:2000. In April 2008, DECRA became registered to O.H.S.A.S. 18001. This registration exemplifies DECRA’s commitment to the safety of their employees, visitors, and vendors. O.H.S.A.S. 18001 goes beyond all federal and state regulations. It requires detailed, company specific, policies, procedures, work instructions, employee training, measurements, recordkeeping, and continuous improvement. It is DECRA’s belief that commitment to this registration will enhance the ability to minimize exposure to health and safety risks. DECRA Roofing Systems, Inc., is a Fletcher Building Company, one of New Zealands to industrial companies with a history going back to the early 1900s. Fletcher has over 11,000 employees worldwide in 250 sites around the world including divisions in Building Products, Infrastructure, Distribution, Laminates and Panels.