What Is Roof Flashing?

At Berg Home Improvements, we know that water is one of your home’s worst enemies. Even a seemingly minor leak can cause massive structural damage over time, leading to costly repairs and not a small amount of frustration. Modern roofs are designed to prevent leaks as efficiently as possible through numerous water-repelling elements, including flashing.

So, what exactly is roof flashing, and why is it important? In short:

• Flashing is a thin layer of waterproof material that keeps water from entering your home via the roof.
• There are several kinds of flashing used to seal different elements and roofs.
• Flashing is key along roof valleys, chimneys and vents.
• Failed flashing can lead to leaks and other harmful damage.

What Is the Role of Roof Flashing?

Your roof consists of much more than just shingles. One key element is flashing, which acts as a critical weatherproofing barrier for your home. It seals the gaps where different roof planes meet or where structures project through the surface. Without this vital component, rain could easily seep through gaps in the shingle layer into your attic, ceiling and walls. Instead, by guiding water away from these elements and toward your gutters, flashing helps your home remain dry.

What Are Common Types of Roof Flashing?

Contractors can use several materials for roof flashing. The most common options include:

• Aluminum: This lightweight metal is highly durable, easy to shape and incredibly popular for roofs.
• Copper: Copper offers a beautiful aesthetic and incredible longevity for homeowners looking for premium materials.
• Galvanized steel: Treated with a zinc coating, this tough material resists corrosion and provides excellent structural protection.

Sometimes certain kinds of plastic are used in specific venting applications, but metal remains the standard for primary weatherproofing.

Where Is Flashing Most Important?

Certain parts of your roof are highly susceptible to leaks. Professional installers pay close attention to protecting vulnerable areas such as:

• Valleys: The dips where two roof slopes intersect must be able to handle heavy water flow during rainstorms.
• Chimneys: Brick-and-mortar chimneys typically require specialized flashing installation to prevent moisture intrusion.
• Skylights and vents: Any penetration in the roof deck needs a tight, custom seal to keep the weather outside.
• Dormers: The corners where vertical walls meet the sloped roof require careful attention to block water entry.

What Are Warning Signs That Flashing Is Failing?

Aging home systems and harsh weather can compromise your flashing and, with it, your entire roof. Look out for common red flags like:

• Indoor leaks or water stains on your ceiling
• Visible rust or corrosion on exposed flashing
• Missing pieces of flashings
• Cracked sealant around roof penetrations

These are all good reasons to further inspect your roof’s condition or call a professional for a repair.

Protect Your Home From Top to Bottom With Chicagoland’s Trusted Experts

Maintaining a watertight exterior is crucial for protecting your entire home. If you notice signs of damage on your flashing or simply have an aging roof, you need a reliable team to assess the situation.

Berg Home Improvements has proudly served Illinois for five decades, delivering exceptional workmanship and dedicated customer service. We never leave a job until you are completely satisfied with your new home improvement. If your flashing has been compromised, reach out today to schedule your free estimate and keep your home safe from the elements.