PPGI Roof Flashing

Roof flashing is a thin material, usually galvanized steel, that professional roofers use to direct water away from critical areas of the roof, wherever the roof plane meets a vertical surface like a wall or a dormer. Flashing is installed to suDrip edges is a metal flashing installed on the roof's edge. It helps water drain off your roof without causing a water leak or damaging your home.A roof system requires flashings to weatherproof any area where a penetration occurs. This includes rakes and eaves, pipe vents, walls, skylights, chimneys, and valleys. Flashings are the most important component of a roof. If the flashing is not installed with great attention to detail, leaks will occur.The origin of the term flash and flashing are uncertain, but may come from the Middle English verb flasshen, 'to sprinkle, splash', related to flask.rround roof features, such as vents, chimneys and skylights.