Tile roof systems are very different from shingle systems due to the properties of the material as well as the shape of tiles. Tile systems are designed to help air and water flow while minimizing wind uplift and water damming which can damage underlayment.
A good roof is more than shingles or tiles, it is a system with several components which work together to protect your home from the elements. Without quality products and proper installation a roof will not be as durable or as functional. Depending on the type of roof, certain system accessories are needed. Three types