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The Importance of Roof Flashing

Updated: Aug 21

roof flashing around chimney shingle roof

Roof flashing is a crucial component of any roofing system, yet it is often overlooked by homeowners. In this article, we will discuss the significance of roof flashing, what it is, the various types available, when to replace it, and when to seek help from a roofing professional.


What is Roof Flashing?

Roof flashing is a thin material, typically made of metal or plastic, that is installed around roof penetrations like chimneys, skylights, vents, and dormers. Its primary purpose is to prevent water infiltration into the roof structure, thus avoiding potential damage.


The Various Types of Roof Flashing


Base Flashing:

Base flashing waterproofs the area where the roof meets a vertical surface, such as a chimney or a wall. It prevents water from seeping into the joint.

Base Flashing:


Step Flashing:

Step flashing is used where a sloped roof meets a vertical wall. It is installed step-like to prevent water from seeping into the joint.


Continuous Flashing:

Continuous flashing is a single piece of metal that runs along a roof intersection to provide a continuous barrier against water penetration.


Valley Flashing:

Valley flashing is installed in roof valleys where two roof slopes meet. It helps direct water away from the intersection to prevent leaks.


Drip Edge Flashing

Drip edge flashing is installed along the edges of a roof to direct water away from the fascia and into the gutters, preventing water damage.


Vent Pipe Flashing:

Vent pipe flashing is used around vent pipes that protrude through the roof to create a watertight seal and prevent leaks around these openings.


Counter Flashing:

Counter flashing is installed over the base flashing to provide an additional layer of protection against water intrusion at the roof-wall intersection.


When to Replace Roof Flashing

Over time, roof flashing can deteriorate due to weather exposure, leading to leaks and structural issues. Signs that it may be time to replace the roof flashing include:

  • Visible rust or corrosion

  • Cracks or missing sections

  • Interior water stains

  • Warped or loose flashing


When to Call a Roofing Professional for Help

It is advisable to seek assistance from a roofing professional in the following situations:

  • If you are uncomfortable working at heights

  • If your roof has a steep pitch

  • If specialized tools or materials are needed

  • If you are unsure about proper installation techniques


Proper maintenance of roof flashing is crucial for protecting your home from water damage and ensuring the longevity of your roof. When in doubt, always consult a professional roofer for expert advice and assistance.


For expert roofing services, call Power Play Contracting at 315-662-2019 today!

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