The main functions of flashing in roof systems

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Without flashing, rain will take advantage of any gaps or imperfections in your roof. But what is flashing made of, and how does it work? In this blog, the experts at Black Anchor Roofing answer these questions and discuss other aspects of this critical component.



Flashing's primary role in a roof system is water management. example of norway phone number It is installed directly on top of the roof underlayment (waterproofing membrane) to create a continuous waterproof barrier.

Here are a few key features:

Secondary Flashing: Flashing acts as a secondary flashing at key transitions and penetrations in the roof, such as valleys, eaves, and around chimneys or vents.
Water diversion: The shape and angle of the flashing directs rainwater away from the roof joint and toward the eaves and gutters, preventing it from pooling under the shingles.
Seal around penetrations: Flashing creates a watertight seal around plumbing vents, chimneys, skylights, and other elements around roof decks.
Integration with the gutter system: To properly integrate with the overall gutter system, the bottom edge of the flashing is usually curved to direct water toward the gutter. This prevents water from splashing onto the wall or fascia.