What Are Metal Roofing Flashing Types?

Metal roofing is a popular and durable option for commercial and residential properties. One key component of a metal roofing system is flashing. Flashing is the metal material that seals the joints and gaps between the roofing panels and other roof elements, such as chimneys, skylights, and vents. Water and debris can penetrate the roof without proper flashing, causing damage and leaks.

Metal roofing flashing is essential to any adequately installed metal roof system. It directs water away from the roof’s seams and joints, preventing leaks and water damage. Flashing is typically made of a durable,  weather-resistant metal such as aluminum, copper, or steel. It is custom-fabricated to fit specific areas of the roof.

Proper flashing installation requires a skilled roofing professional, as improper installation can lead to severe problems. A well-designed metal roofing system with adequately installed flashing can provide decades of reliable protection against the elements, making it a smart choice for commercial and residential applications.

Type of Metal Roofing Flashing

Metal roofing is a popular roofing option due to its durability and strength. However, properly installing flashings is crucial to keep your metal roofing system in good condition. Flashings are thin strips of material placed over vulnerable areas on a roof to prevent water from seeping through. Here are the types of metal roofing flashing that you should know about.

  • Drip Edge Flashing

It is typically made of aluminum or galvanized steel. It comes in a variety of sizes to fit different roof pitches. Drip edge flashing aims to create a barrier between the roof edge and the gutter, guiding water into the gutter and away from the roof structure. It is an essential component of a roofing system that helps to protect against water damage, mold, and rot.

  • Valley Flashing

Valley flashing is essential to metal roofing systems along the valleys where two roof planes meet. This type of flashing is designed to divert water away from the intersection of the two roof planes to prevent water intrusion and leaks. Valley flashing is typically made of galvanized steel, copper, or aluminum. It comes in various sizes and shapes to fit different roof configurations. It is installed beneath the roofing material and is anchored securely to the roof deck with nails or screws.

  • Chimney Flashing

Chimney flashing is an essential component of metal roofing systems. It is typically made from galvanized steel, copper, or aluminum. It is designed to prevent water from seeping into the gap between the chimney and the roof. The flashing is installed around the base of the chimney and is attached to the roof using screws or nails. 

A good quality chimney flashing will have a watertight seal, preventing water from penetrating the roofing system and causing damage. Proper installation and maintenance of the chimney flashing are crucial to ensuring the roofing system’s longevity.

  • Step Flashing

Step flashing is an essential component of metal roofing systems that helps to protect your roof from water damage. This type of flashing is typically used around chimneys, skylights, or other roof penetrations. It consists of small, L-shaped pieces of metal installed in a stair-step pattern along the roofline.

Step flashing helps provide a watertight seal between the roof and any adjacent structures or features, ensuring that water is directed away from your home and preventing leaks or other damage. With its simple yet effective design, step flashing is a highly reliable and durable metal roofing flashing ideal for a wide range of residential and commercial properties.

  • Ridge Cap Flashing

Ridge Cap Flashing is an essential metal roofing flashing type used to cover the roof’s ridge line. It is designed to prevent water penetration and protect the roofing system from external elements.

This type of flashing is made of durable materials such as steel or aluminum. It comes in different colors and sizes to match the roofing system. It creates a tight seal between the roof and the ridge cap, preventing moisture from seeping through.

  • Z-flashing

Z-flashing is a popular type of metal roofing flashing that prevents water penetration in areas where two different surfaces meet. It is designed to be installed at the base of a vertical wall and underneath the roofing panels. Z-flashing is named after its distinctive “Z” shape, which allows it to fit snugly between the roofing panels and the wall. This type of flashing is typically made from durable metals such as aluminum or stainless steel, which makes it resistant to corrosion and weather damage.

  • Eave Flashing

Eave flashing is a critical component of any metal roofing system. It is installed at the lower edge of the roof and plays a vital role in protecting the roof deck and fascia board from water infiltration. The most common type of eave flashing is galvanized steel or aluminum. 

It is available in a variety of colors to match the roofing material. Eave flashing is designed to be installed under the roofing panels and over the underlayment, creating a watertight seal. Ensuring that the eave flashing is installed correctly and sealed is essential to prevent any water damage to the building.

Tips On How to Maintain Your Metal Roofing Flashing 

Metal roofing flashing is an essential part of a building’s roofing system, as it helps to prevent water from penetrating the building. Here are some tips to ensure your metal roofing flashing remains in good condition.

  • Regularly inspect the flashing for any signs of damage or wear and tear.
  • Keep the flashing clean by removing any debris or dirt that may have accumulated on it.
  • Ensure the flashing is properly sealed against the roof to prevent water from seeping through.
  • Consider applying a protective coating to the flashing to prevent corrosion and extend its lifespan.

By following these simple tips, you can maintain the integrity of your metal roofing flashing and ensure long-lasting protection for your building.