Flashed Into The Roof

Some key points to remember.

Flashed into the roof. Some roof features such as chimneys require two pieces of flashing. This ensures that rain always. Roof flashing is sheet metal that prevents water from seeping into a home. On pitched roofs the high side of the chimney is the most vulnerable to water seepage compared to the sides and the low side.

It is simply a piece of sheet metal usually aluminum or galvanized steel which is placed over joints in roof and wall construction to prevent water seeping into the house and causing damage. Pieces of step flashing are bent at an angle. Step flashing should always be used where the roof deck meets a sidewall. These are the key types of roof flashing you need to understand.

Anywhere surfaces intersect on a roof is a prime spot for water seepage. Flashing provides the extra protection these spots need. They should installed with a height of at least 6 inches to protect from splashing water. Galvanized sheet metal is most common but aluminum and copper find occasional use in specialty situations.

These problem areas include the edges of skylights and chimneys soil stacks vent fans and roof valleys as well as the intersection of the roof deck and dormer walls. Base flashing is one length of flashing that is bent along the length. Although roof flashing is occasionally fabricated from plastic roofing felt or rubber it is usually made of rust resistant metal galvanized steel aluminum or copper. The major cause of residential roof leaks is a fault in the flashing.