Beacon Roofing Supply, the No. 3 LBM dealer on the ProSales 100, acquired Canada's Posi-Slope Enterprises Inc. and its sister company, Posi-Pentes, which specialize in the design and fabrication of tapered roof insulation systems. ... Brian Muelenaer was named vice president of operations for Smith Mountain Building Supply, Hardy, Va. ... Stock Building Supply plans to expand nationally its Coleman Floor business unit. To that end, it hired former HD Supply executive Steve Wilson to serve as the installed sales unit's director. ... ProBuild bought some of the assets of Chopp Lumber in the Washington suburb of Waldorf, Md. ProBuild also will open a new millwork facility in San Antonio. ... East Haven (Conn.) Builders Supply, a subsidiary of US LBM Holdings, acquired Millwood (N.Y.) Lumber, a 78-year-old lumberyard serving the New York City suburbs of Westchester County, N.Y., and Fairfield County, Conn. ... Michael Cassidy was promoted to president and CEO of TW Perry, Gaithersburg, Md. ... Kevin O'Meara, former president and COO at Builders FirstSource, became president and CEO of Atrium Companies. ... Don Magruder was named chief executive officer at Ro-Mac Lumber, Leesburg, Fla. ... Home Lumber Co., Whitewater, Wis., won the 2010 state Commerce Department's Small Family Business of the Year Award. ... Western Building Center of Kalispell, Mont., acquired Stevensville (Mont.) Building Center. ... Allied Building Products named Sean Smith, a former executive at Stock Building Supply, national sales manager of the firm's Exterior Products Division.
