TopBuild is an installer and distributor of insulation and other building material products to the construction industry. Co.'s segments are: Installation and Specialty Distribution. Through its Installation segment, Co. provides insulation installation services nationwide through its contractor services business. In addition, Co. installs other building products including glass and windows, rain gutters, afterpaint products, fireproofing, garage doors, and fireplaces. Through its Specialty Distribution segment, Co. distributes building and mechanical insulation, insulation accessories and other building product materials for the residential, commercial, and industrial end markets.