Standard Industries-backed GAF, a roofing and waterproofing manufacturer in North America, agreed to acquire FT Synthetics, a British Columbia-based manufacturer of synthetic underlayments for the steep slope roofing industry. Financial terms were not disclosed. "FT Synthetics and GAF share a deep commitment to the roofing industry. This acquisition will enable GAF to pursue our shared goals of continued innovation and explore opportunities for expanded product offerings that support the entire building envelope," Jim Schnepper, GAF CEO.