Atlas Roofing Corp. has acquired Westminster, Colo.-based ACH Foam Technologies Inc. to build up its product line and technology capabilities while creating what it says is the largest manufacturer of molded polystyrene in North America. ACH has eight U.S. manufacturing plants producing architectural insulation, geofoam, protective packaging, cold-chain packaging and OEM components with block-molding and shape-molding processes. The acquisition improves Atlas’ product offering and manufacturing capabilities, President Ken Farrish said. He oversees about 20 production sites in four divisions, including Atlas EPS, which specializes in expanded polystyrene insulation for interior and exterior construction applications, packaging uses, geofoam and components for recreational vehicles, doors and sunroom panels. Atlas EPS started in the mid-1960s as Falcon Foam and has five plants, including one in Byron Center, Mich., which it says is the largest EPS manufacturing facility in the industry; Fredericktown and Perryville, Mo.; Martinsville, Va.; and Tijuana, Mexico. ACH formed in 2005 through the merger of three companies — Advance Foam Products, Contour Products and Heartland EP...