Are you considering a roof upgrade? If so, you may have thought about installing a metal roof over your existing shingles. Metal roofs are lauded for their durability, energy efficiency, and longevity, making them an attractive option for many homeowners. However, the cost of this project can be a significant factor in deciding whether or not to proceed. In this blog post, we will delve into the specifics of what it costs to install a metal roof over shingles, helping you make an informed decision for your home improvement project.
Explore the cost to install metal roof over shingles. Dive into the different types of metal roofing materials, their advantages,
What Is Metal Roofing
Metal roofing is a roofing system made from metal pieces or tiles. It is a component of the building envelope. Metal roofs can be made from a variety of metals and alloys including galvanized steel, tin, aluminum, copper, and zinc. They can be designed to resemble traditional roof materials such as wood shake, slate, or clay tiles.
Advantages Of Metal Roofs
- Longevity: Metal roofs can last 40-70 years, depending on the material. Traditional asphalt roofing materials have an estimated life expectancy of roughly 12-20 years.
- Durability: Some metal roofs can sustain wind gusts up to 140 miles per hour, will not corrode or crack, and may be impact-resistant.
- Safety: Metal roofs will not spark and ignite into flames during a wildfire or lightning strike.
- Energy Efficiency: Metal roofs reflect solar radiant heat, which can reduce cooling costs by 10-25%.
- Environmentally Friendly: Metal roofs not only have 25-95% recycled content, depending on the material used, but are also 100% recyclable at the end of their life as a roof.
Disadvantages Of Metal Roofs
- Cost: Metal roofing is considered a premium material and can be two to three times more expensive than other roofing materials. However, it might save money in the long run due to its longevity.
- Noise: Metal roofs can be noisy during rainstorms.
- Expansion & Contraction: Metal roofing materials can expand and contract with temperature changes, which can cause them to become loose over time if not properly installed.
- Inconsistency In Color Match: If a repair is required or a home extension is added years later, it might be hard to find an exact match to the existing metal.
- Risk Of Denting: Just as your car can dent if a golf ball hits it, a metal roof can dent if large hailstones fall on it.
Cost To Install Metal Roof Over Shingles
The cost to install a metal roof over shingles varies based on several factors:
- Type Of Metal: As mentioned, there are various types of metals available for roofing. Copper, for instance, is on the higher end, while steel might be more affordable for homeowners.
- Roof Complexity: The more angles, corners, and other complexities your roof has, the more it will cost.
- Labor Costs: Depending on where you live, labor costs can vary significantly.
- Size Of The Roof: Naturally, the larger the roof, the more materials and time will be needed.
- Existing Roof Condition: If there are issues with your current shingles that need to be addressed before the metal can be installed, this can increase costs.
Types Of Metal Roofs
Several different types of metal roofs are available, and the cost varies for each type. Some of the main ones are:
Aluminum
Aluminum is a lightweight, corrosion-resistant option that performs well in coastal areas where saltwater can corrode other types of metals. It naturally forms a protective oxide coating, which makes it particularly resistant to rust and corrosion. Aluminum is also energy-efficient, reflecting more of the sun’s rays than steel. However, it’s generally more expensive than steel.
Steel
Steel is the most used material for metal roofing. It’s incredibly durable, resistant to rust when coated with a zinc layer, and can be coated in a wide variety of colors. There are three primary types of steel roofing: galvanized, galvalume, and weathering steel. Galvanized steel is coated in zinc, while galvalume steel is coated with an alloy of zinc and aluminum. Weathering steel is designed to develop a rust-like appearance over time.
Copper
Copper is a premium roofing material that has been used on roofs for centuries. It offers a unique, beautiful appearance and is extremely long-lasting. Over time, copper forms a green patina which can add character to a building. While it’s one of the most durable metals, it’s also one of the most expensive.
Tin
Tin roofing, often referred to as “terne” or “terneplate,” is made with steel (or sometimes iron) that’s been coated with a layer of tin. It was a popular choice in the past, but it’s less common today, largely replaced by more modern materials that offer better performance and longevity. However, it can still be found on some older homes and historic buildings.
Cost To Install A Metal Roof Over Shingles
Installing a metal roof over shingles can be a cost-effective way to replace an old roof without the added expense and hassle of removing the old shingles. However, the cost can vary significantly based on the type of metal used, the complexity of the roof, and regional labor costs.
Average National Costs By Type Of Metal Used
- Aluminum: On average, homeowners can expect to pay between $9 to $12 per square foot for materials and installation.
- Steel: Galvanized steel roofing costs range from $7 to $10 per square foot, while galvalume steel comes in at slightly higher, around $9 to $12 per square foot.
- Copper: Being a premium material, copper roofing can cost anywhere from $15 to $22 per square foot.
- Tin: Tin is generally one of the more affordable options, with costs ranging from $6 to $8 per square foot.
It’s essential to note that these are average costs, and actual prices can vary based on factors such as roof complexity, regional labor rates, and any additional work that may be required, such as repairing underlying damage or reinforcing the roof structure.
Frequently Asked Questions
To provide a better understanding of the cost to install metal roof over shingles, we have answered some of the most commonly asked questions.
Why would someone install a metal roof over shingles?
Installing a metal roof over shingles offers a streamlined approach to roofing upgrades. By avoiding the removal of the old roof, homeowners can save on labor and disposal costs. Additionally, the existing shingles can provide an extra layer of insulation, enhancing energy efficiency and soundproofing capabilities.
How long does it take to install a metal roof over shingles?
While the exact duration depends on the roof’s size and complexity, a professional team typically completes the installation in 3-5 days for an average-sized home. Factors such as weather conditions, accessibility, and any unforeseen challenges can influence the timeline.
Do I need any special permits to install a metal roof over my existing shingles?
Permit requirements are dictated by local building codes and can vary significantly from one municipality to another. Before embarking on a roofing project, always consult with your local building department to ensure compliance with all regulations and avoid potential fines.
Is there any maintenance required for a metal roof?
Metal roofs are renowned for their low maintenance needs. However, periodic inspections are advisable. Homeowners should check for accumulated debris, potential punctures, or areas where sealants might be failing to ensure the roof’s longevity and performance.
Can I install a metal roof myself?
While some homeowners are tempted by the DIY approach, metal roofing installation demands specific expertise and tools. Engaging a professional ensures the roof is installed correctly, safely, and in line with warranty requirements, safeguarding your investment.
How does the weight of a metal roof compare to traditional shingles?
Surprisingly, metal roofs are often lighter than asphalt shingles. This reduced weight is beneficial, especially for older homes, ensuring that the structure isn’t burdened with additional weight, which can compromise its integrity.
Understanding The Costs For Metal Roofing
Metal roofing offers a blend of durability, aesthetic appeal, and energy efficiency that few other materials can match. Whether you’re considering aluminum, steel, copper, or tin, each type of metal brings its unique set of advantages to the table. By choosing to install a metal roof over existing shingles, homeowners can enjoy a seamless transition to a more sustainable roofing solution without the hassle of a complete tear-off. As with any significant home improvement project, it’s crucial to do thorough research, consult with professionals, and weigh the long-term benefits against the initial investment. With proper installation and minimal maintenance, a metal roof can be a lasting and valuable addition to any home.
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