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The Complete Guide to Aged Copper Roof

Select Renovation • July 29, 2024

Are you thinking about installing a copper roof in your home? This guide is meant to help. Learn all you need to know about the advantages of an aged copper roof, a popular choice among homeowners because of its durability and aesthetics. In this guide, Select Renovations will explore everything about aged copper roofs, including what they are, their benefits, how they get their color, how they’re installed, their costs, and how to take care of them. We’ll also answer some common questions to help you make the best decision for your roofing needs.

Keep reading to learn more!

What is Aged Copper Roofing?

Aged copper roofing refers to copper roofs that have undergone the patination process. This natural process causes the copper to change color over time, giving it a distinctive greenish-blue hue known as patina. The patina adds character to the roof and provides a protective layer that helps keep your roof intact and makes it last longer.

Aged copper roofs typically develop a greenish-blue color. This change occurs as the copper reacts with oxygen, carbon dioxide, and moisture. The patina process is natural and nothing to be worried about.

Advantages of Aged Copper Roofs Over Other Metal Roofing

Copper roofs come with many benefits. They’re popular with homeowners and commercial properties. It’s an aesthetically pleasing roof and is very popular in Michigan. Here are some advantages of copper roofing over other metal roof types:

  1. Lasts a While : Copper is a really durable material that, if kept correctly, can last for over one hundred years. It resists corrosion and aging like no other roof does.
  2. It’s Pretty : The unique patina that develops on aged copper roofs gives any building an elegant look. Some people will pay more for a home or business with copper roofing!
  3. Low Maintenance : Copper roofs require minimal maintenance compared to other roof types. The patina protects the roof, so repairs are less frequent.
  4. Environmental Benefits : Copper is recyclable and eco-friendly. Using copper roofing can contribute to sustainability and lower your carbon footprint.

The Patina Process

Patina is a thin layer that forms on the surface of copper as a result of chemical reactions between the metal and the environment. This layer has copper compounds like copper sulfate, copper chloride, and copper carbonate. 

The patina process is a natural change that happens when copper is exposed to the elements. This process is responsible for the beautiful and unique greenish-blue hue that aged copper roofs are known for.

The development of patina on copper involves the following:

  1. Oxidation : When copper is first exposed to the air, it reacts with oxygen to form copper oxide, which gives the metal a dull brownish-red look.
  2. Formation of Copper Hydroxide : As the copper continues to be exposed to moisture, the copper oxide reacts with water to form copper hydroxide, a bluish-green compound.
  3. Development of Copper Carbonate : Over time, carbon dioxide in the air reacts with copper hydroxide to form copper carbonate, responsible for that characteristic greenish-blue shingle color.

How Long Does It Take for Patina to Develop?

The time it takes for a copper roof to develop a full patina varies widely based on the abovementioned factors. The patina process can take as little as 5 to 7 years in humid climates with frequent rainfall. In drier, less polluted areas, the patina may take up to 20 years or more to fully develop.

If you prefer the look of a patinated copper roof without the wait, there are methods to accelerate the patina process. Applying a patina solution, a mixture of chemicals that mimic the natural aging process can give copper a weathered appearance more quickly. This solution is applied to the copper roof, initiating the chemical reactions that produce the patina.

Installation of Aged Copper Roofs

Hiring a professional is recommended if you plan on installing a copper roof. Here’s a brief overview of the steps involved in copper commercial and residential roofing installation :

  1. Preparation : The roof deck must be prepared and reinforced to support the copper shingles.
  2. Underlayment : A high-quality underlayment is installed to provide additional protection against moisture.
  3. Copper Shingles : Copper shingles are installed starting from the bottom edge of the roof and working upwards. Each shingle is securely fastened to the roof deck.
  4. Finishing Touches : Flashing and other finishing touches are added to ensure a watertight seal and a polished appearance.

Cost of Aged Copper Roofs

Installing an aged copper roof in Michigan can vary based on roof size, complexity, and labor costs. The average cost ranges from $15 to $25 per square foot. While copper roofing is more expensive upfront than other materials, its longevity and low maintenance can result in long-term savings.

According to Forbes , the price of a complete copper roof replacement fluctuates between $27,000 and $72,800 for the entire project. Copper roof shingles are more affordable and cost $11 to $16 per square foot.

Maintenance and Care

Copper roofs are relatively low-maintenance, but some care is required to keep them in optimal condition.

  1. Regular Inspections : Periodically inspect the roof for any signs of damage or wear. We recommend yearly roof inspections .
  2. Cleaning : Remove debris and leaves from the roof to prevent moisture buildup.
  3. Repairs : Address any minor issues promptly to prevent them from becoming significant problems.
  4. Professional Maintenance : Schedule professional maintenance every few years to ensure the roof remains in good condition.

Frequently Asked Questions

What is the lifespan of aged copper shingles?

Aged copper shingles can last over 100 years with proper maintenance. Their natural resistance to corrosion and weathering makes them one of the most durable roofing materials available.

How to age a copper roof?

Aging a copper roof involves allowing the natural patina process to occur over time. However, if you prefer a faster process, you can apply a patina solution to accelerate the aging.

What color is aged copper?

Aged copper typically develops a greenish-blue patina.

How long does it take for a copper roof to go green?

The process can take as little as 5 to 7 years in humid climates, while it may take up to 20 years in drier climates.

Conclusion

Aged copper roofs offer durability, aesthetic appeal, and low maintenance costs. The natural patina process makes the roof aesthetically pleasing, and your shingles last longer. If you’re considering a copper roof for your home or business in Fraser, our experienced team is here to help. 

Contact Select Renovations today to learn more about our copper roofing services and get a free quote!

A roof with a lot of shingles on it

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A man is sitting on top of a tiled roof.

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An aerial view of a roof with trees in the background

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A close up of a roof with a blue sky in the background

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