Roof Installations business. Get a good roof over customers' heads with this business and you'll find yourself on top of the world. Business Overview The best aspect about starting a roofing service is that unlike a new kitchen, a new roof is usually a need, not a want. Residential and commercial roofing manufacturers use many different materials, such as asphalt, steel, cedar, and composite materials. The first step to get the business set in motion is to decide what type of...