Asphalt shingles


There are three main types of asphalt shingle: organic asphalt shingles, laminated organic asphalt shingles, and fiberglass asphalt shingles. Organic asphalt shingles are made from paper or felt saturated with asphalt to make it waterproof. A top coating is applied, and ceramic granules are then embedded. The granules may contain a portion of copper or tin to discourage moss growth on the roof. Laminated asphalt shingles are made from two distinct layers. They are heavier, more expensive, and more durable than normal organic asphalt shingles. Fiberglass asphalt shingles are based on a fiberglass reinforcing mat, to which is applied asphalt with mineral fillers. Fiberglass reinforcement was developed as an alternative to the traditional asbestos paper reinforcement. The durability of all asphalt shingles is affected by sudden changes in ambient temperature, known as ambient shock. Proper roof ventilation is also important in order to extend the life of asphalt shingles. Staple guns should not be used to fix asphalt shingles; traditional roofing nails are the best method.