Flashing Between Two Roofs

Two ways to flash roof edges.

Flashing between two roofs.

Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing. In modern buildings flashing is intended to decrease water penetration at objects such as chimneys vent pipes walls windows and door openings to make buildings more durable and to reduce indoor mold problems. Drip edge metal valley flashing dormer chimney and kickout flashing are types of roof flashing that shed water away from the connections between roofs walls. Apron flashings if you are new to roofing or fitting roof flashings this really is a bread and butter place to start master this and the slightly more difficult flashings like step flashings will seem a lot easier.

These include roof valleys the intersection between a dormer wall and the roof surface and chimney and skylight perimeters nearly anywhere runoff is heavy or where two opposing surfaces meet. Open valleys have metal flashing to protect this critical area of the roof. Below are two photographs of roof wall step flashing completed and effective of a slate roof against a brick wall below left and in process with step flashing against a dormer sidewall before the dormer siding has been put in place below right. Flashing refers to thin pieces of impervious material installed to prevent the passage of water into a structure from a joint or as part of a weather resistant barrier system.

Click pic to enlarge the video below will show you how to fit lead roof flashing like the ones seen in the picture above. Proper roof wall abutment flashing examples. Some parts of roofs and exterior walls are particularly prone to leaks and water damage.