What is Roof Flashing? Everything You Need To Know

October 18th, 2023
Closeup of new plain red clay tiles and lead flashing on a pitched roof in the UK

Are you familiar with the term ‘roof flashing’; have you ever wondered precisely what it does and why it’s essential for your roof’s overall integrity and durability? This guide is tailor-made for you. By definition, roof flashing is a critical material that directs water away from vital areas of the roof, such as seams and joints, towards your gutters. It serves as a defensive barrier against water penetration that could lead to devastating damage.

 

Roof flashing primarily addresses the vulnerable areas that roof shingles alone cannot protect effectively. It’s strategically installed in places where the roof surface intersects with another vertical surface like a wall or chimney. By diverting water away from these critical areas, roof flashing averts potentially costly damage and adds years to a roof’s lifespan.

 

Roof flashing, being typically made of thin strips of metal—copper, sheet metal, stainless steel, or lead-coated copper flashing —provides such a crucial line of your roof’s defense against water. Stay tuned to gain a thorough understanding of what roof flashing is, the types available, their specific applications, and why they are an integral part of any roofing system.

 

Remember, getting to know these basic aspects of roofing allows for better decision-making when it comes to roof installation, repair, and replacement. A well-informed homeowner will always find it easier to have meaningful discussions with roofing contractors, ensuring the best possible services for your roof.

red roof with copper siding

Understanding Roof Flashing: The Essentials

At its core, roof flashing is a resourceful piece of different material that works to protect your roof from water damage. Generally speaking, it’s a thin layer made from weather-resistant material—most commonly stainless steel, copper, lead-coated copper, or sheet metal. Each material choice carries its own set of benefits. For example, stainless steel is known for its strength and durability, copper is celebrated for its longevity and recyclability, and sheet metal offers affordability along with decent weather resistance.

 

Flashing’s primary function is to act as a barrier against water intrusion at places where various components of your roof come together. It’s essentially the bodyguard of your roof, and its job is to grab hold of the water that lands on your roof, directing it into the gutters and safely away from your house. Seamless roof flashing plays a critical role in preventing water penetration and unexpected roof leaks. 

 

A roof system without flashing would cause uninvited water from rain, melting snow, or even water runoff to easily find its way into the vulnerable areas of your roof—including intersections between different types of roofing material or where the roof meets a wall or a chimney. Water penetration of this sort could cause significant water damage, leading to ugly stains on your ceiling, rotted wood, black mold, rust, and more. Simply put, flashing is your roof’s silent warrior tirelessly defending from the countless gallons of water that your roof battles with each year.

 

This shield against water damage is crucial, and it’s essential to understand its function and the variety of flashing types available to best protect your roof. Indeed, installing high-quality flashing in your new roof and maintaining it properly will mitigate the likelihood of water-related issues and strengthen the overall resilience of your roof.

 

Different Types of Roof Flashing

Before diving into the varieties of roof flashing, it’s crucial to remember that no type is inherently superior. It all depends on where and how it’s applied. A roofing system may use several types of flashing, each providing optimal protection in certain specific situations. Here, we delve into the different types of roof flashing, their uniqueness, and their respective roles in keeping your roof secure and dry.

  1. Apron Flashing: It’s the unacclaimed hero protecting your house from water penetration where the roof meets a vertical wall. Its purpose is to channel the water away, dropping it into the gutter lines.
  2. Continuous Flashing: This type, known as “long length” flashing, provides a one-piece, seamless solution in waterproofing the intersection between a vertical wall and a sloped roof.
  3. Step Flashing: It’s an indispensable component in areas where a roof meets a wall or chimney. Each section of step flashing corresponds with a single shingle, forming a barrier as solid as a wall.
  4. Valley Flashing: Roof valleys, the internal angles formed by intersecting roof planes, are part of a roof most prone to leak. Valley flashing, particularly important for areas with heavy rains or snow, protects these vulnerable spots.
  5. Counter Flashing: This type is commonly used in conjunction with base flashing to form a two-part system. It’s embedded in the chimney or wall and overhangs the base flashing, providing an additional layer of protection against water infiltration.
  6. Drip Edge Flashing: Installed at the edges of your roof, this flashing protects from water damage by directing the flow of water away from the fascia and into the gutters.

 

Each type of flashing has its specific uses and contributes significantly to the overall functionality and durability of your roof. The materials, such as copper, stainless steel, or sheet metal, are chosen considering various factors, including the roof type, weather conditions, and budget. One best practice is to apply roofing cement in a thin layer beneath flashings to enhance their waterproofing effect.

 

Ultimately, the goal of any flashing type is to protect vulnerable areas of your roof from water penetration and ensuing damage, such as a severe roof leak. Please stick around as the next section will cover topics including the possible pitfalls of improper flashing installation and the importance of regular roof inspection.

New corrugated metallic gray roof of new house

Other Essential Roof Components

While roof flashing is an integral part of a successful roofing system, other components also play critical roles. Attention to detail during installation and replacement of your roof is paramount to ensure all components function seamlessly together for superior protection.

 

Certainly, finely installed roof flashing significantly lessens potential water penetration instances. However, the proper installation of other elements, like the roof deck and asphalt shingles, is also crucial in preventing water infiltration. Moreover, installing a professionally crafted drip edge is essential, as it guides the rainwater from your shingles to the gutters, reducing the chances of water trickling down your fascia or siding.

 

A sturdy roof also encompasses other measures like adequately installed gutters for efficient water flow away from your home’s base. Even minor errors during gutter installation can lead to improper water diversion, causing soil erosion around your house, or water infiltration in basements and crawlspaces.

 

When it’s time for a roof replacement or roof repair, what lies beneath is as significant as what you see on top. The underlayment, for example, is an element not directly visible but plays a significant role in providing an extra layer of protection against harsh weather conditions. 

 

Going a step further, regular roof inspections, particularly after notable events like storms or harsh weather conditions, are invaluable to proactively identify problems like damaged shingles, impaired flashing, or blocked gutters. Timely discovery helps to prevent more extensive damage over time. 

Why Choose Leverage Roofing for Your Roof Flashing Needs

When it comes to roof flashing installation, repair, and regular maintenance, Leverage Roofing stands as a shining testament to professionalism, quality, and unwavering commitment to customer satisfaction. We are a family-owned business, deeply rooted in our local community and dedicated to serving our friends and neighbors through superior roofing solutions.

 

Roof flashing is more than just a component; it’s a barrier that stands between your home and potential water damage. Ensuring this barrier is correctly installed and maintained is crucial. When you think about roof flashing materials, installation, or repair,Leverage Roofing should be your go-to choice. Here’s why:

 

Local Expertise with a Global Standard: Located in the heart of Murrells Inlet, South Carolina, Leverage Roofing is a family-owned business that proudly serves the Carolinas. Our knowledge is rooted in local construction needs, ensuring that your roof flashing stands up to the specific weather conditions of the region.

 

Comprehensive Roofing Solutions: From asphalt shingles to metal roofing, and from seamless metal gutters to professional roof inspections, our range of services ensures that every aspect of your roofing system is addressed. We don’t just install flashing; we ensure it seamlessly integrates with every other element on your roof.

 

Insurance Claims? We’ve Got You Covered: We understand the stress and hassle that can come with insurance claims. That’s why we work directly with your insurance company for any claim-related damage, ensuring the process is as smooth as possible.

 

In conclusion, when you choose Leverage Roofing, you’re choosing a company that’s passionate about quality work, and steadfast in its commitment to customer satisfaction. You’re choosing a roofing partner that you can trust with the protection of your home.

 

In South Carolina, your choice is clear—Leverage Roofing, where quality meets integrity. Contact or call us today.

 


References 

“Mold.” Centers for Disease Control and Prevention, Centers for Disease Control and Prevention, 14 Nov. 2022, www.cdc.gov/mold/default.htm. 

 

“Check Your Roof Flashing.” FEMA.Gov, 12 Apr. 2021, www.fema.gov/node/618044#:~:text=Flashing%20is%20located%20at%20exterior,due%20to%20wind%2Ddriven%20rain. 


 

This blog has been reviewed for accuracy by: 

 

Jaime Bolduc | Leverage Roofing Head of Sales

Jaime Bolduc is a seasoned professional in the roofing industry, whose dedication and expertise have made him a respected figure in the field.