Do Metal Roofs Attract Heat in Summer? Debunking Common Myths

Posted on June 19, 2025

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Do Metal Roofs Attract Heat in Summer? Debunking Common Myths

Many homeowners in Buffalo and Western New York wonder if metal roofs attract heat during summer, potentially leading to uncomfortably warm homes and increased cooling costs. This common concern often makes people hesitate when considering metal roofing options, despite their durability and longevity. The truth about metal roofs and summer temperatures, however, might surprise you.

Contrary to popular belief, properly installed metal roofs don’t make houses hotter during summer. In fact, they can actually help keep homes cooler through their unique thermal properties. The interaction between metal roofing materials and sunlight is quite different from what most people imagine. While metal does heat up quickly when exposed to direct sunlight, it also cools down rapidly once the sun moves or sets.

Metal roof heat reflection capabilities actually offer significant advantages over traditional roofing materials like asphalt shingles. The science behind this involves important concepts like solar reflectance, thermal emissivity, and ventilation systems that work together to manage summer heat effectively.

Understanding how metal roofs truly perform in hot weather is essential for choosing the best roofing system for your home. With various cool metal roofing options now available, homeowners can benefit from both the durability of metal and enhanced thermal performance during Buffalo’s warm summer months.

The Science Behind Metal Roof Temperatures

To understand how metal roofs perform in summer, we need to examine two critical properties: thermal emissivity and solar reflectance. Thermal emissivity refers to a material’s ability to release absorbed heat, while solar reflectance measures how effectively a surface bounces sunlight away. Quality metal roofs typically excel in both categories compared to traditional asphalt shingles.

Most metal roofs reflect most solar energy rather than absorbing it like asphalt shingles do. This means less heat transfers into your attic and living spaces. Even when metal does warm up, its high thermal emissivity allows it to quickly release that heat once the sun sets or moves position, providing Buffalo homes with faster cooling in the evening.

Metal’s thermal conductivity actually works to your advantage during summer. While metal conducts heat efficiently, this property allows heat to distribute evenly rather than concentrating in spots. Combined with attic ventilation and underlayment, metal roofing systems create an effective thermal barrier. This explains why properly installed metal roofs can keep Buffalo homes up to 25% cooler and reduce cooling costs compared to traditional roofing materials.

Because of their thermal properties, metal roofs are a great choice for Western New York homes, where summer temperatures can fluctuate dramatically throughout the day, providing more consistent indoor temperatures despite outside conditions.

Do Metal Roofs Make Houses Hotter?

When Buffalo homeowners consider metal roofs, a common concern is whether these materials will turn their homes into ovens during summer. This worry stems from the misconception that because metal heats up quickly in sunlight, it must transfer that heat into the home. 

The reality is that a professionally installed metal roof with adequate ventilation and insulation typically keeps homes cooler than traditional materials. The key lies in the installation process. Metal roofs should include an air gap between the metal and the roof deck, allowing heat to dissipate before reaching your attic space. This ventilation system creates a thermal barrier that significantly reduces heat transfer to your living areas.

In the Northeast’s humid summers, this reflective property becomes even more valuable. While dark asphalt shingles might reach temperatures of 150 degrees Fahrenheit or higher on sunny days, light-colored metal roofs typically stay cooler, preventing that heat from radiating into your home and reducing cooling costs throughout Buffalo’s warmest months.

Reflective Properties: Metal’s Advantages in Summer

Contrary to common belief, metal roofs don’t attract heat — they actually reflect it away from your home. As mentioned above, unlike traditional asphalt shingles that absorb and retain heat, metal roofing systems reflect solar radiation back into the atmosphere before it can penetrate your home’s interior.

Metal roofs can reflect up to 70% of the sun’s energy, dramatically reducing the amount of heat transferred into your attic and living spaces. This reflective capability means your Buffalo home stays naturally cooler during hot summer days, potentially reducing air conditioning usage and associated energy costs.

The finish and color of your metal roof significantly impact its heat reflection properties. Light-colored and specially coated “cool metal roofs” offer the highest solar reflectance values. These specialized finishes are designed to maximize reflection even in darker color options, giving Buffalo homeowners aesthetic flexibility without sacrificing thermal performance.

For optimal summer performance in Western New York, consider metal roofs in lighter shades like white, light gray, or tan as these colors reflect more sunlight naturally. Many homeowners are surprised to learn that even medium-toned metal roofs outperform traditional dark asphalt shingles in heat reflection. The combination of reflective properties and professional installation creates an energy-efficient roofing system that works with nature rather than against it during summer.

Cool Metal Roofing Technologies for Buffalo Homes

As Buffalo homeowners look for ways to maximize energy efficiency during summer months, cool metal roofing technologies offer innovative solutions specifically designed to minimize heat gain. These advanced systems combine the durability of metal with specialized heat-management features that can transform your home’s thermal performance.

Cool metal roofing products feature highly reflective coatings containing special pigments that reflect sunlight away from your home. These pigments can reflect more of the sun’s heat energy compared to standard roofing materials. Even in darker colors, these specialized coatings maintain higher reflectivity than their traditional counterparts.

Many cool metal roofing options also incorporate ventilated ridge systems that create a continuous airflow beneath the metal panels. This design allows hot air to escape through the peak of the roof rather than transferring into your attic space. Combined with insulation, this ventilation strategy creates a comprehensive thermal barrier against summer heat.

Energy Star-rated metal roofs provide verified performance for Buffalo’s climate. These certified products must meet strict standards for solar reflectance and thermal emissivity. During Western New York’s increasingly warm summers, an Energy Star-rated metal roof can reduce cooling costs by up to 25% while maintaining comfortable indoor temperatures even during extreme heat waves. The long-term energy savings often offset the initial investment in these premium roofing systems.

Metal Roof vs. Asphalt Shingles: Summer Heat Performance 

When comparing metal roofs to asphalt shingles during Western New York’s hottest months, the differences in heat management are clear. While both materials are popular choices for Buffalo homeowners, their performance in summer varies significantly. Metal roofs typically maintain surface temperatures 50 to 60 degrees Fahrenheit cooler than asphalt shingles during peak sunshine hours. This temperature difference directly impacts your home’s cooling requirements and indoor comfort levels.

Asphalt shingles absorb up to 95% of the sun’s radiant energy, converting it to heat that transfers into your attic space. Metal roofs, by contrast, reflect most solar radiation and quickly release what little heat it does absorb. This means Buffalo homes with metal roofs typically require less air conditioning during July and August heat waves.

The aging process of these materials further widens the performance gap. Asphalt shingles deteriorate under UV exposure, losing granules and darkening over time. This degradation progressively reduces their already limited reflective properties. Metal roofs maintain their reflective qualities for decades with minimal maintenance, even through Western New York’s harsh seasons, from summer heat to winter freeze-thaw cycles.

For Buffalo homeowners concerned about long-term energy efficiency, this performance difference becomes increasingly significant over the lifespan of your roofing system. While asphalt shingles perform adequately when new, metal roofs provide consistent summer heat management throughout their entire service life.

Choosing the Right Metal Roof for Buffalo’s Summers

Choosing the ideal metal roof for Buffalo’s summer climate requires balancing several practical considerations. First, evaluate your home’s orientation and sun exposure. South-facing roofs receive more direct sunlight and benefit most from highly reflective metal options. Consider your home’s existing insulation and ventilation systems, as these work in tandem with your roof to manage heat transfer.

Your neighborhood aesthetic and personal style preferences matter too. Fortunately, today’s metal roofs come in various profiles from traditional standing seam to shingles that mimic slate or tile. Many Buffalo homeowners choose lighter colors for maximum heat reflection, but cool roof technology allows for darker shades without sacrificing thermal performance.

Many homeowners find that working with a local Buffalo roofing contractor familiar with Western New York’s specific climate challenges is helpful. Experienced contractors can recommend the optimal metal gauge, finish, and installation method for your specific home. They understand how Buffalo’s combination of humid summers and snowy winters affects roof performance and can ensure proper underlayment and ventilation installation.

Request samples of metal roofing options to see how they look at different times of day on your property. Ask your contractor about specific cool metal roofing products with proven performance in similar Western New York homes. The right metal roof balances summer heat management with year-round protection against Buffalo’s diverse weather conditions.

Summer Metal Roofing Services in Buffalo, NY

When considering a new roof for your Buffalo home, many homeowners are stuck between metal roofs and traditional asphalt shingles, especially when considering temperatures during the peak summer months. Metal roofs are often believed to make your home hotter. However, this is a common misconception. Metal roofs reflect solar radiation, which helps reduce heat absorption and can potentially lower cooling costs significantly.

Comparatively, asphalt shingles absorb more heat and can contribute to higher indoor temperatures. Over time, the efficiency of asphalt shingles can degrade, increasing your summer cooling needs. In contrast, metal roofs maintain their reflective properties and structural integrity longer, offering a more sustainable and energy-efficient solution in Western New York’s varied climate.

If you’re considering upgrading to a metal roof to improve your home’s heat management during summer, contact OConnor Contracting today at (716) 600-7663 to explore your options and find the best solution tailored to your home’s needs.

Do Metal Roofs Attract Heat in Summer? Debunking Common Myths