DAVID

When problems with a roof arise, whether they are minor and can be remedied by simple repair or major failures that may require roof replacement, a contractor must first assess the damage to the roof, taking into consideration such factors as pitch, shear, rafter, and roof angle. Then, he must decide which type of roofing material will work best in the affected area. Roofing professionals generally use one of three types of roofing materials: slate, shingles, or tile. Although there are other types of roofing materials available, such as metal, plastic, and clay tiles, these are the most common roofing materials in North America.