TopBuild Corp operates in two segments, Installation and Specialty Distribution, providing insulation products and accessories, garage doors, roofing materials, and other products; and insulation installation services to the construction industry. They offer various services and tools to assist builders in applying the principles of building science to new home construction, which include pre-construction plan reviews, diagnostic testing, and various inspection services. The company serves a wide range of customers including single-family homebuilders, commercial general contractors, remodelers, and individual homeowners among others and operates in around 235 installation branches and 175 distribution centers in the US and Canada.