DALLAS – Builders FirstSource Inc. has entered into a definitive agreement to acquire Alpine Lumber Company. Founded in Englewood, Colorado, by the Kurtz family in 1963 and subsequently converted to a 100% employee-owned and operated company, Alpine has 21 locations serving homebuilders and contractors in the Front Range of Colorado, western Colorado and northern New Mexico with a broad product range including prefabricated trusses and wall panels and millwork.