Flex Roofing Systems 2670 Leiscz's Bridge Rd. Suite 400 Leesport, PA 19533 Phone: 800-969-0108 Fax: 610-916-9501	CSI Formatted Specifications Elvaloy Complete specifications in editable format.    Click here to view list       TPO Complete specifications in editable format.    Click here to view list       Modified Bitumen Complete specifications in editable format.    Click here to view list       CTR Complete specifications in editable format.    Click here to view list