Flashed Into The Roof

Base flashing is the solution for front walls.

Flashed into the roof.

On pitched roofs the high side of the chimney is the most vulnerable to water seepage compared to the sides and the low side. Flashing installed on the high side is called head flashing while installations on the low side is called apron flashing. Roof flashing is sheet metal that prevents water from seeping into a home. They should installed with a height of at least 6 inches to protect from splashing water.

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. This ensures that rain always. Anywhere surfaces intersect on a roof is a prime spot for water seepage. Base flashing is one length of flashing that is bent along the length.

Galvanized sheet metal is most common but aluminum and copper find occasional use in specialty situations. Flashing provides the extra protection these spots need. The major cause of residential roof leaks is a fault in the flashing. Continuous flashing is also called apron flashing because it acts a lot like an apron.

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. These are the key types of roof flashing you need to understand. Step flashing should always be used where the roof deck meets a sidewall. Some roof features such as chimneys require two pieces of flashing.