When it comes to building a durable, weather-resistant roof, flashing is a critical component that protects your home from costly water damage. Among all flashing materials, copper flashing stands out for its exceptional longevity, strength, and aesthetic appeal.
In this blog, we’ll break down:
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What copper flashing is
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Where it’s used on a roof
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How it compares to other materials
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Why it’s a smart investment, especially in climates like Illinois and Indiana
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When to call a professional for inspection
What Is Copper Flashing?
Copper flashing is a type of metal barrier installed in vulnerable areas of a roof to direct water away and prevent leaks. It’s typically installed where two surfaces meet — like the base of a chimney, around skylights, or along roof valleys. Its role is to seal gaps and provide a watertight transition between materials.
You’ll find copper flashing used in:
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Chimney bases
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Roof valleys
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Skylights and dormers
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Wall intersections
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Roof edges (drip edges)
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Step flashing along siding and shingles
Why Choose Copper Flashing?
Copper is considered a premium roofing material, and for good reason. Compared to aluminum, galvanized steel, or PVC-based flashing, copper offers long-term performance and reliability — especially in regions with harsh seasonal changes.
1. Longevity
Copper flashing can last 70 to over 100 years. It doesn’t crack, warp, or degrade like other materials and often outlasts the shingles or roof itself.
2. Weather Resistance
Copper develops a natural protective layer called patina, which shields it from corrosion, UV rays, ice, and snow. This makes it ideal for the extreme Midwest climate — where winters bring snowstorms and summers bring intense heat and rain.
3. Aesthetic Appeal
Copper adds a high-end, timeless touch to any home. Over time, its shiny orange finish turns into a beautiful green or brown patina, giving your home character and charm.
4. Maintenance-Free
Copper flashing doesn’t need to be painted, sealed, or treated. It holds up under extreme conditions without special upkeep — which can save you money over the long run.
Types of Copper Flashing
Depending on where it’s used, copper flashing comes in several forms:
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Step flashing – Small L-shaped sections layered between each shingle
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Continuous flashing – Long strips used along walls or dormers
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Chimney flashing – Special kits that include base, step, and counter flashing
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Valley flashing – V-shaped copper used where two roof slopes meet
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Drip edge flashing – Directs water into the gutters from the roof edge
Why Copper Is Ideal for Illinois & Indiana Homes
Homeowners in Illinois and Indiana experience intense seasonal changes — snow and ice in winter, hail and storms in spring, and heat waves in summer. These conditions demand building materials that can hold up without failing.
Copper flashing is resilient to freeze-thaw cycles, doesn’t expand or contract drastically, and won’t corrode over time. For this reason, it’s often chosen for high-end homes or full roof replacements using materials like GAF shingles, which pair beautifully with copper accents.
Should You Invest in Copper Flashing?
While copper is more expensive upfront than aluminum or galvanized steel, it’s a long-term investment. It adds value to your home, increases curb appeal, and offers decades of worry-free performance.
Consider copper flashing if you’re:
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Replacing or upgrading your roof
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Installing copper gutters or copper bay windows
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Working on a historic or custom-designed home
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Planning to stay in your home long-term and want low maintenance
When to Call a Pro
If your home is older, you’ve noticed leaks, or you’re seeing missing shingles near chimneys or valleys — it might be time to check your flashing. Spring is the perfect time for a roof inspection after winter’s wear and tear.
At Optimal Home Improvement, we offer free roof inspections and full-service roof replacements with premium materials, including copper flashing, copper gutters, and copper accents. We also assist with insurance claims if your roof has storm-related damage.
Ready for a roofing upgrade?
Call Optimal today to schedule a professional roof inspection. If you’re considering copper flashing, gutters, or full roof replacement — our experts will walk you through every step and help you maximize your insurance coverage.
