Beacon Roofing Supply Inc., Somerville, Mass., announced that it has finalized the purchase of The Roof Center, Gaithersburg, Md., and its subsidiary West End Lumber, Houston. The Roof Center, a full-service wholesale building materials distributor operates 17 branches in Maryland, Virginia and Delaware. West End Lumber operates five similar branches in Texas.

Beacon Roofing Supply Inc. consists of seven regional companies in 14 states and three Canadian provinces, with 62 locations, 1200 employees and sales in excess of $500 million. It has a presence in New England, where it originated, with Beacon Sales Co. founded in 1928; in the Mid-Atlantic States with Quality Roofing Supply Company; in Canada with Groupe Bedard and Beacon Roofing Supply Canada; and in Virginia and the Carolinas with Best Distributing Company.