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  • Writer's pictureLAST STOP ROOFING

Edge and Ridge Flashing: The Unsung Heroes of Roofing

Updated: Nov 21, 2023








When it comes to roofing, it's not just about shingles and underlayment. The unsung heroes of a well-protected roof are edge and ridge flashing. In this blog post, we'll explore the significance of edge and ridge flashing, their roles in protecting your roof, and the materials and techniques used in their installation. . At the end, we'll go over some common FAQ's.for edge and ridge flashing.


The Role of Edge and Ridge Flashing


Understanding the role of edge and ridge flashing is crucial for appreciating their significance:


  • Weather Protection: Edge flashing is installed along the perimeter of the roof, sealing it against wind, rain, and other elements. Ridge flashing is used at the highest point of the roof, preventing water penetration.

  • Water Diversion: Both edge and ridge flashing divert water away from vulnerable areas, preventing moisture damage to the roof and the underlying structure.

  • Structural Integrity: Properly installed flashing ensures the structural integrity of your roof by preventing water from seeping into the roof deck and causing damage.



Types of Edge and Ridge Flashing Materials

These are the most common materials used for edge and ridge flashing:


  • Metal Flashing: Metal flashings, such as aluminum or galvanized steel, are durable, weather-resistant, and commonly used for their longevity.

  • Rubber Flashing: Rubber flashing materials like EPDM (ethylene propylene diene monomer) are flexible, easy to work with, and offer excellent water resistance.

  • PVC Flashing: PVC flashing is lightweight and resistant to corrosion, making it suitable for various roofing applications.

  • Lead Flashing: Lead flashing is known for its malleability, making it an excellent choice for custom flashing installations.

  • Flashing edges with asphalt fabric & roofing cement or 100% Silicone flashing grade.




"Experience & Dedication to the trade prevents a call back" – Jhon Ventura- Founder of Last stop Roofing & Home Repair LLC

Installation Techniques for Edge and Ridge Flashing

Proper installation techniques are essential for the effectiveness of edge and ridge flashing:


  • Step Flashing: Step flashing is used to seal roof-to-wall intersections, ensuring a watertight connection. Each piece is installed in a step-like fashion and overlapped.

  • Counter Flashing: Counter flashing is placed over the top of base flashing to protect it from exposure to the elements. It creates a protective cap.

  • Overlapping: Overlapping flashing pieces create a barrier that prevents water from infiltrating the roof, diverting it away from vulnerable areas..


Benefits of Edge and Ridge Flashing in Roofing

Edge and ridge flashing offer several benefits to your roofing system:


  • Water Protection: Edge and ridge flashing provide superior water protection, preventing moisture damage to your roof and structure.

  • Longevity: Properly installed flashing materials can last for many years, extending the life of your roof and reducing maintenance costs.

  • Structural Integrity: The use of flashing contributes to the structural integrity of your roof, preventing costly structural repairs.



Edge and ridge flashing may not be the most visible components of your roof, but they are undoubtedly essential for protecting your investment. By understanding their roles, the various materials available, and the importance of proper installation techniques, you can ensure the longevity and integrity of your roofing system. Edge and ridge flashing materials are the unsung heroes that safeguard your roof against the elements and provide the peace of mind that your home is well-protected from moisture damage and structural issues.





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