The primary benefit of roof flashing is that it stops water from entering a house, thus, avoiding a lot of damage. It helps divert the water from the roof, to the gutter system, without allowing it to pool under the roof tiles. Another advantage is that it adds to the durability of the roof and the adjacent walls. The good thing about it, is the low maintenance required. A quality flashing rarely cracks, burns, flakes, peels, or breaks.