Coryell Roofing delivers a roofing system that meets rigorous insurance requirements . . . Hitachi’s insurance policy had rigorous requirements for wind and hail ratings. The experienced Coryell Roofing team designed a system that would fill the bill! The team installed a fully adhered 60 mil Durolast membrane with mechanically fastened recovery board. Hitachi continued business as usual as Coryell installed a roofing system that met their insurance requirements!