Metal Roof Flashing Diagram

Flashing provides the extra protection these spots need.

Metal roof flashing diagram.

Drip edge metal valley flashing dormer chimney and kick out flashing shed water away from the connections between roofs walls chimneys and other building assemblies this collection of 18 articles animations and videos identifies the critical roof flashing areas illustrates durable roof flashing details and shows how to flash roofs. Most flashing is made of galvanized metal but diy ers may prefer aluminum flashing because it s easier to bend. The most common flashing for metal roofing is the ridge cap which is used at the peak of a roof where two opposing roof slopes join. At the end of the vertical sidewall the step flashing shall be turned out in a manner that directs water away from the wall and onto the roof and or gutter while this is a nice diagram of how these flashings work don t forget our 5 th design rule.

Other flashings include transition flashing end wall and sidewall flashings and valleys see diagram on right for application. 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. Open valleys have metal flashing to protect this critical area of the roof. The flashing shall be a minimum of 4 inches 102 mm high and 4 inches 102 mm wide.

While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately.