TopBuild Corp is an installer and distributor of insulation products. Its operating segments involve the Installation and Specialty Distribution segment. The installation segment provides insulation installation services nationwide through contractor services business. Speciality Distribution segment distributes building and mechanical insulation, insulation accessories and other building product materials for the residential, commercial, and industrial end markets. The majority of revenue is earned from the installation segment. Its main customers are contractors. Other products include gutters, after-paint, garage doors, fireplaces, and fireproofing and stopping. TopBuild operates majorly in the United States.