Flashing Between Two Roofs

Some parts of roofs and exterior walls are particularly prone to leaks and water damage.

Flashing between two roofs. Two ways to flash roof edges. Open valleys have metal flashing to protect this critical area of the roof. When fitting cover flashings to a flat roof like the. Click pic to enlarge the video below will show you how to fit lead roof flashing like the ones seen in the picture above.

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