Metal Roof Flashing Diagram

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.

Metal roof flashing diagram.

Other flashings include transition flashing end wall and sidewall flashings and valleys see diagram on right for application. Ensure the flange fits snugly into upper corners of roof hole and lower portion of flashing fits tightly over. The flashing shall be a minimum of 4 inches 102 mm high and 4 inches 102 mm wide. Slip upper edge of flashing base under horizontal cut in roof panel then lower flashing onto roof.

While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately. 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. Open valleys have metal flashing to protect this critical area of the roof. The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak.

A diagram and helpful explanation on how chimney flashing step flashing and other types of roof flashing protect a roof from leaks.