The Guide to Cool Roofs: Benefits and Considerations

by | Mar 25, 2024

Cool roofs have gained significant attention in recent years, primarily due to their ability to reflect sunlight and reduce heat absorption. This unique property ensures that buildings remain cooler, leading to a myriad of benefits. In this guide, we delve deep into the advantages of cool roofs and address some common queries.

Understanding Cool Roofs

A cool roof is specifically designed to reflect more sunlight than traditional roofs. This means that it absorbs less heat, ensuring that the building remains cooler. The principle is similar to wearing light-colored clothing on a sunny day. While a conventional dark roof can heat up to 150°F or more during summer, a cool roof, with its reflective properties, can remain up to 50°F cooler.

The effectiveness of a cool roof is determined by two primary factors:

  • Solar Reflectance: This measures the roof’s ability to reflect sunlight.
  • Thermal Emittance: This gauges the roof’s capacity to radiate absorbed heat.

Both these properties are rated on a scale of 0 to 1, with higher values indicating a cooler roof.

Key Benefits of Cool Roofs

Energy Efficiency

One of the most significant advantages of cool roofs is the potential for energy savings. By maintaining a cooler building temperature, there’s a reduced need for air conditioning, leading to lower electricity bills. This is especially beneficial for areas with hot climates, where cooling costs can be substantial.

Extended Roof Lifespan

Cool roofs are less exposed to extreme temperature fluctuations, which can cause materials to expand and contract. This reduced thermal stress can extend the roof’s lifespan, ensuring that replacements or repairs, like those offered by BLC Roofing, are less frequent.

Environmental Impact

By reducing the need for air conditioning, cool roofs indirectly reduce greenhouse gas emissions and pollutants associated with electricity production. This contributes to a smaller carbon footprint and a healthier environment.

Addressing Common Concerns

Cost Implications

Many potential users often wonder about the cost implications of cool roofs. The good news is that many cool roofs are priced similarly to their traditional counterparts. Even if there’s a slight premium, the energy savings often offset the additional costs. Moreover, with rebates and incentives offered by various entities, the overall cost can be further reduced.

Climate Considerations

While cool roofs are incredibly beneficial in hot climates, their advantages in cooler climates might be less pronounced. However, the slight increase in heating costs during winter is often negligible compared to the substantial cooling savings during summer.

Maintenance and Durability

In humid regions, cool roofs might be more prone to algae or mold growth. However, modern cool roofing materials, like those used by BLC Roofing, are treated with special chemicals to combat such issues, ensuring longevity and minimal maintenance.

Making the Right Choice with BLC Roofing

If you’re considering a cool roof for your commercial building, it’s essential to consult with experts. BLC Roofing, a leading roof repair service in Akron OH, can provide insights tailored to your specific needs. With a range of roofing services in Akron OH, including roof installation in Akron OH, we ensure that you make an informed decision that aligns with your objectives.


Cool roofs are more than just a trend; they’re a sustainable solution that offers tangible benefits. From energy savings to environmental impact, the advantages are clear. By understanding the intricacies and consulting with experts like BLC Roofing, you can harness the full potential of cool roofs for your building.

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