The Importance Of Sheet Metal Flashing On Your Roof

Written By Cody Profitt

Flashings

When it comes to roofing, one of the most crucial components that often gets overlooked is sheet metal flashing.

While most homeowners may be familiar with shingles or tiles, flashing is the unsung hero that plays a critical role in protecting your home from water damage.

At Comanche Roofing, we pride ourselves on being experts in flashing roofs with custom-fabricated sheet metal, providing our clients with durable, high-quality solutions designed to withstand even the toughest weather conditions.

WHAT IS METAL FLASHING?

Sheet metal flashing is a thin layer of metal installed at various points of a roof to prevent water from entering a structure. It is typically placed at areas where the roof meets a vertical surface, such as chimneys, skylights, vents, and the edges of roofs.

Flashing acts as a barrier to direct water away from vulnerable areas, effectively protecting the underlying materials and the interior of your home.

why metal flashing is important?

1. Prevents Water Penetration

Flashing directs water away from seams, joints, valleys, and penetrations (like chimneys or vents), which are the most vulnerable spots on a roof.
Without proper flashing, water can seep in and cause leaks, leading to interior damage, mold, or rot.

2. Protects Structural Components

Moisture that infiltrates beneath the roofing material can damage the decking, underlayment, and even framing.
Metal flashing acts as a barrier that protects these critical components from deterioration.

3. Extends Roof Lifespan

Properly installed flashing helps maintain a watertight seal, reducing the risk of recurring repairs and prolonging the overall life of the roof.

4. Enhances Wind Resistance

Flashing helps secure the edges and overlaps of a roof. This reinforcement is especially important in high-wind areas, where wind-driven rain can exploit unsealed seams.

5. Aesthetic and Functional Integration

When designed well, flashing doesn’t just perform a vital role—it also gives the roof a polished, professional appearance by neatly finishing transitions and edges.

Types of metal flashing

Flashing might not be the first thing you think about when it comes to your roof, but it plays a big role in keeping your home dry. Flashing is the metal material installed around roof edges, valleys, and structures (like chimneys and skylights) to help guide water away and prevent leaks.

There are different types of flashing, each made for a specific part of the roof. Here’s a simple breakdown of the most common types and when they’re used:

Step Flashing

Used where the roof meets a vertical wall—like along a chimney or dormer. Step flashing is installed in layers, with each piece tucked under a shingle to help guide water down and away.

Counter Flashing

Often used with step flashing. It’s installed over the top to keep water from sneaking behind the step flashing—especially helpful around chimneys and brick walls.

Base Flashing

Found at the bottom of structures like chimneys. It works with counter flashing to provide solid waterproofing around vertical elements.

Continuous Flashing (aka Apron Flashing)

This runs along walls where they meet the roof. It’s one long piece of metal that directs water downward, but it needs room to flex—otherwise it can warp or crack over time.

Valley Flashing

Placed in the “valleys” where two roof slopes meet. It’s shaped like a “V” or “W” and carries rainwater off the roof quickly.

Drip Edge Flashing

Installed along the edges of your roof to keep water from creeping under the shingles and damaging the fascia or soffit. It also helps direct water into the gutters.

Kickout Flashing

A small but mighty piece of flashing that redirects water away from the siding at the base of a roof. Without it, water can slip behind your walls and cause hidden damage.

Cap Flashing

Covers the tops of walls or other flashing to stop water from flowing behind it. Think of it as an added layer of protection.

Skylight Flashing

Custom-designed for skylights to create a watertight seal. Most skylights come with their own flashing kits.

How Do I Know If My Flashing Needs to Be Replaced?

Your roof’s flashing is like a shield that keeps water from sneaking into your home. Over time, it can wear out, and when that happens, leaks and water damage can occur. Here’s how to tell if your flashing needs to be replaced:

Rust or Corrosion – If the metal looks rusty or worn out, it won’t protect your roof like it should.

Cracks or Gaps – Even small cracks in the flashing can let water in and cause damage.

Loose or Missing Pieces – If you notice flashing that has come loose or fallen off, it’s time for a fix.

Water Stains on Ceilings or Walls – Brown spots or damp areas inside your home could mean water is getting in through bad flashing.

Mold or Musty Smell – Too much moisture can lead to mold growth, especially in the attic.

Leaks in the Attic – If you see water pooling in your attic or near the flashing, it’s not doing its job.

Damaged Roof Shingles Nearby – If the shingles around your flashing are curling or broken, water might be seeping underneath.

Why Choose us for Your Flashing Needs?

At Comanche Roofing, we understand the importance of quality and precision when it comes to flashing installation. Here’s why we are the experts in the field:

Custom Fabrication:

We specialize in custom fabricating sheet metal flashing tailored to the specific needs of your roof. Our skilled craftsmen can create flashing that fits perfectly around chimneys, skylights, vents, and other roof structures, ensuring a watertight seal that protects your home.

High-Quality Materials:

We use only the highest quality sheet metal materials, designed to withstand harsh weather conditions and provide long-lasting protection. Our flashing solutions are resistant to rust, corrosion, and UV damage, ensuring that your roof remains protected for years to come.

Expert Installation:

Our team of experienced professionals is trained in the latest roofing techniques, ensuring that your flashing is installed correctly and efficiently. We pay attention to every detail, from the initial assessment to the final installation, to guarantee that your roof is fully protected against water damage.

Commitment to Customer Satisfaction:

At Comanche Roofing, we are committed to providing our customers with the best possible service. We work closely with our clients to understand their needs and offer solutions that are both effective and affordable. Our goal is to exceed your expectations and provide you with a roof that not only looks great but also offers superior protection.

Conclusion

Sheet metal flashing is a critical component of any roofing system, providing essential protection against water damage and extending the life of your roof. At Comanche Roofing, we are experts in custom-fabricated sheet metal flashing, offering high-quality solutions designed to meet the unique needs of your home. If you’re looking for a reliable, professional roofing company to handle your flashing needs, look no further than Comanche Roofing. Contact us today to schedule a consultation and learn more about how we can help protect your home with our expert roofing services.