Metal vs. Asphalt Roofing in Calgary: Which Material Withstands Extreme Weather Best?

Metal vs. Asphalt: Which Roofing Material is Best for Calgary Weather?

Calgary's weather can be unforgiving. From scorching summer heat to bone-chilling winters, and everything in between, our roofs take a beating year-round. When it comes to choosing the right roofing material for your home, the decision often boils down to two popular options: metal and asphalt. But which one truly stands up to Calgary's extreme weather conditions? Let's dive deep into this comparison to help you make an informed decision for your home.

Understanding Calgary's Unique Climate Challenges

Before we compare roofing materials, it's crucial to understand what they're up against. Calgary's climate is characterized by:

• Extreme temperature fluctuations
• Heavy snowfall and ice accumulation
• Intense UV exposure during summer months
• Frequent hailstorms
• Strong winds, especially Chinooks

These factors play a significant role in determining the ideal roofing material for Calgary homes.

Metal Roofing: A Modern Solution for Extreme Weather

Metal roofing has gained popularity in recent years, and for good reason. Let's explore its advantages and disadvantages in the context of Calgary's climate.

Advantages of Metal Roofing

1. Durability: Metal roofs can last 50 years or more with proper maintenance. This longevity is particularly valuable in Calgary's harsh climate.
2. Weather Resistance: Metal roofs excel at shedding snow and ice, reducing the risk of ice dams and water damage.
3. Energy Efficiency: Metal reflects sunlight, helping to keep homes cooler in summer and potentially reducing energy costs.
4. Fire Resistance: With the highest fire safety rating available, metal roofing offers superior protection against wildfires.
5. Wind Resistance: Properly installed metal roofs can withstand high winds, including Calgary's notorious Chinooks.

Disadvantages of Metal Roofing

1. Initial Cost: Metal roofing typically has a higher upfront cost compared to asphalt shingles.
2. Noise: Some homeowners report increased noise during rain or hailstorms, though proper insulation can mitigate this issue.
3. Expansion and Contraction: Extreme temperature changes can cause metal to expand and contract, potentially leading to loosening over time if not properly installed.

Asphalt Shingles: The Traditional Choice

Asphalt shingles remain the most common roofing material in North America. Here's how they stack up for Calgary homes:

Advantages of Asphalt Shingles

1. Cost-Effective: Asphalt shingles are generally less expensive to purchase and install than metal roofing.
2. Variety: They come in a wide range of colors and styles to suit different architectural preferences.
3. Easy Installation and Repair: Asphalt shingles are simpler to install and repair, which can be advantageous in emergency situations.
4. Familiarity: Many roofing contractors are experienced with asphalt shingle installation and repair.

Disadvantages of Asphalt Shingles

1. Shorter Lifespan: Typically lasting 15-30 years, asphalt shingles have a shorter lifespan compared to metal roofing.
2. Vulnerability to Extreme Weather: They can be more susceptible to damage from high winds, hail, and extreme temperature fluctuations.
3. Environmental Impact: Asphalt shingles are petroleum-based products and are less eco-friendly than metal roofing.
4. Heat Absorption: Dark-colored asphalt shingles can absorb heat, potentially increasing cooling costs in summer.

Performance in Calgary's Extreme Weather Conditions

Let's break down how each material performs under specific Calgary weather challenges:

Snow and Ice

Metal Roofing: The smooth surface of metal roofing allows snow and ice to slide off more easily, reducing the risk of ice dams and structural damage from snow load.

Asphalt Shingles: While quality asphalt shingles can perform well, they're more prone to ice dam formation and may require additional measures like heat cables in problem areas.

Hail

Metal Roofing: High-quality metal roofing can withstand hail better than many other materials. While it may dent, it's less likely to crack or break.

Asphalt Shingles: Impact-resistant asphalt shingles are available, but standard shingles can be damaged by severe hailstorms, potentially leading to leaks and requiring replacement.

UV Exposure

Metal Roofing: Reflective metal roofing helps reduce heat absorption, protecting the roof structure and potentially lowering cooling costs.

Asphalt Shingles: Dark-colored asphalt shingles absorb more heat, which can accelerate aging and potentially increase cooling costs. However, "cool" asphalt shingles are available that reflect more sunlight.

Wind Resistance

Metal Roofing: Properly installed metal roofing systems can withstand high winds, including those experienced during Chinook events.

Asphalt Shingles: While high-quality architectural shingles perform well, they may be more susceptible to wind damage over time, especially if not properly maintained.

Cost Considerations

When weighing metal against asphalt roofing, cost is often a deciding factor for many homeowners. Here's a breakdown:

Initial Costs

Metal Roofing: Generally more expensive upfront, with costs varying based on the type of metal and style chosen.

Asphalt Shingles: More affordable initially, making them an attractive option for budget-conscious homeowners.

Long-Term Costs

Metal Roofing: While the initial investment is higher, the longevity and durability of metal roofing can make it more cost-effective over time. Reduced maintenance and potential energy savings should also be factored in.

Asphalt Shingles: Lower upfront costs are appealing, but more frequent replacements and potential repairs could increase long-term expenses.

Environmental Impact

In an era of increasing environmental awareness, the ecological footprint of roofing materials is worth considering:

Metal Roofing: Often made from recycled materials and is 100% recyclable at the end of its life. Its longevity and energy-efficient properties contribute to its eco-friendly status.

Asphalt Shingles: Being petroleum-based products, they have a larger environmental impact. However, recycling programs for asphalt shingles are becoming more common.

Q&A: Common Questions About Metal and Asphalt Roofing in Calgary

How do metal and asphalt roofs compare in terms of noise during rain or hailstorms?

Metal roofs have a reputation for being noisier during rain or hail, but this is largely a misconception when it comes to modern installations. With proper insulation and underlayment, a metal roof can be just as quiet as an asphalt shingle roof. In fact, some homeowners find the sound of rain on a metal roof soothing. Asphalt shingles, being a softer material, naturally absorb more sound. However, the difference in noise levels between well-installed metal and asphalt roofs is minimal in most cases.

Can I install solar panels on both metal and asphalt roofs?

Yes, solar panels can be installed on both metal and asphalt roofs. However, metal roofs, particularly standing seam metal roofs, offer some advantages for solar panel installation. They allow for easier and often less expensive mounting of solar panels without the need to make penetrations in the roof surface. Asphalt shingles require more complex mounting systems that penetrate the roof, which can increase the risk of leaks if not done properly. Additionally, the longer lifespan of metal roofs means you're less likely to need to remove and reinstall solar panels to replace the roof during the panels' lifetime.

How do metal and asphalt roofs handle Calgary's freeze-thaw cycles?

Calgary's freeze-thaw cycles can be tough on roofing materials. Metal roofs generally handle these cycles better due to their durability and resistance to moisture penetration. The smooth surface of metal roofing also helps prevent ice dam formation. Asphalt shingles can be more susceptible to damage from freeze-thaw cycles. As water seeps into tiny cracks and then freezes and expands, it can cause shingles to lift or crack over time. However, high-quality architectural shingles with proper underlayment and ventilation can mitigate these issues significantly.

Are there specific maintenance requirements for metal and asphalt roofs in Calgary's climate?

Both metal and asphalt roofs require maintenance, but the nature and frequency differ:

Metal Roofs:

• Annual inspections to check for loose fasteners or sealant issues
• Cleaning gutters to prevent debris buildup
• Removing snow accumulation in heavy snow years (though snow often slides off on its own)

Asphalt Shingle Roofs:

• Annual inspections for cracked, curled, or missing shingles
• Cleaning gutters regularly
• Checking for and addressing moss or algae growth
• Inspecting and maintaining proper attic ventilation to prevent ice dams

Generally, metal roofs require less frequent maintenance than asphalt shingle roofs.

How do metal and asphalt roofs affect home insurance rates in Calgary?

Insurance companies often offer discounts for impact-resistant roofing materials, which can include certain types of metal roofing and Class 4 impact-resistant asphalt shingles. Metal roofs may qualify for additional discounts due to their fire resistance and longevity. However, the specific impact on insurance rates can vary by provider. It's worth discussing with your insurance agent, as investing in a more durable roofing material could lead to long-term savings on insurance premiums.

Can I install a metal roof over existing asphalt shingles in Calgary?

In many cases, it is possible to install a metal roof over existing asphalt shingles, which can save on removal costs and reduce landfill waste. However, this depends on several factors:

• The condition of the existing roof and underlying structure
• Local building codes and regulations
• The specific type of metal roofing system being installed

A professional roofing contractor should assess your specific situation to determine if this is a viable option. They'll need to ensure the roof structure can support the additional weight and that there are no underlying issues that need to be addressed before installation.

How do metal and asphalt roofs compare in terms of resale value for Calgary homes?

Both metal and high-quality asphalt roofs can add value to your home, but they do so in different ways:

Metal Roofs:

• Often seen as a premium, long-term investment
• Can be a selling point due to longevity and low maintenance
• May appeal to buyers interested in energy efficiency and sustainability

Asphalt Shingle Roofs:

• More common, which can be appealing to some buyers
• Lower upfront cost might allow for allocation of home improvement budget to other areas
• High-end architectural shingles can enhance curb appeal

The impact on resale value can depend on the specific Calgary neighborhood and buyer preferences. In areas where metal roofs are becoming more common, they might offer a slight edge in terms of perceived value.

How do extreme temperature fluctuations in Calgary affect metal and asphalt roofs?

Calgary's temperature swings can be challenging for roofing materials:

Metal Roofs:

• Expand and contract with temperature changes, but quality systems are designed to accommodate this movement
• May produce some noise during extreme temperature shifts, though this is typically minimal with proper installation
• Generally maintain their integrity well in fluctuating temperatures

Asphalt Shingle Roofs:

• Can become brittle in extreme cold, making them more susceptible to damage
• May soften in intense heat, potentially leading to accelerated wear
• Quality architectural shingles are designed to withstand temperature fluctuations better than standard 3-tab shingles

Proper attic ventilation is crucial for both roofing types to mitigate the effects of temperature extremes and extend the life of the roof.

Making the Right Choice for Your Calgary Home

Choosing between metal and asphalt roofing for your Calgary home ultimately depends on various factors:

• Your budget, both short-term and long-term
• The architectural style of your home
• Your plans for how long you'll stay in the home
• Your priorities regarding durability, maintenance, and environmental impact

While metal roofing offers superior longevity and performance in Calgary's extreme weather conditions, quality asphalt shingles can also provide reliable protection when properly installed and maintained.

For many Calgary homeowners, the initial cost difference is a significant factor. However, it's essential to consider the long-term value, including potential energy savings, reduced maintenance, and longer lifespan that metal roofing offers.

Ultimately, both metal and asphalt roofing can be suitable choices for Calgary homes when installed by experienced professionals. The key is to weigh all factors carefully and choose the option that best aligns with your specific needs, preferences, and budget.

CalgaryRoofing.ca is a leading roofing contractor that serves Calgary and surrounding areas with expert residential and commercial roofing installation, repair, and maintenance. Our comprehensive services include:

• Asphalt Shingles
• Metal Roofing
• Rubber Roofing
• Cedar Roofing
• Concrete Roofing
• Clay Roofing
• Roof Repair
• Roof Replacement
• Insurance Claims
• Sky Lights
• Soffit, Fascia & Eavestrough
• Emergency Roof Repair
• Solar Roofing

Whether you're leaning towards metal or asphalt roofing, or still unsure which option is best for your home, our team of experienced professionals is here to help. We understand Calgary's unique climate challenges and can provide expert advice tailored to your specific situation. Contact CalgaryRoofing.ca today for a consultation and let us help you make the best roofing decision for your Calgary home.

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