Roofing shingles are made from several types of materials such as Wood, Aluminum, Rubber,
Slate, Fiber Cement, and Asphalt (composite). Asphalt shingles cover 80% of the homes in America, their popularity is due to their relatively light weight, comparatively low cost, ease of installation, and low maintenance requirements. Shingle roofing systems usually consist of an underlayment such as felt paper. All shingle roofs are installed from the bottom upward beginning with a starter course and the edge seams offset to avoid leaks.