What is a Cool Roof?
Everyone is talking about it, but what is a cool roof? Our roofing experts at Mosaic Roofing in Denver can tell you all about it and even install one for your home or business.
So, a cool roof system creates higher solar reflectance, which reduces heat transfer to the building and provides higher thermal emittance than standard roofing products. Higher solar reflectance refers to the ability to reflect the visible, infrared, and ultraviolet wavelengths of the sun. Higher thermal emittance is the ability to radiate absorbed, or non-reflected solar energy.
A cool roof can also improve durability and reduce building cooling loads. It can even help to counteract the urban heat island effect, a phenomenon where temperatures are often a few to 10 degrees higher in urban cities versus the surrounding suburbs and rural areas.
While a large majority of the roofs in the United States are dark-colored, cool roofs are typically either white or a light color. That has changed recently with the development of new residential cool roof products. These new roof products can achieve qualified levels of solar reflectivity even in the darker, richer hues and still look good.
Some advantages of cool roofs include:
- Improvement of comfort and health. Cool roofs reduce air temperatures inside buildings even without air conditioning. They also help prevent heat-related illnesses and deaths.
- Reduction of air pollution and greenhouse gas emissions. Cool roofs lower energy use. They decrease the production of air pollution and greenhouse gas emissions.
- Reduction of energy use. Cool roofs transfer less heat to the building below, so the building is cooler and requires less energy for air conditioning.
Did you know that in the heat of the sun, the surface of a black roof can increase in temperature by more than 100° F over the ambient temperature? This means a black roof can reach temperatures up to 190° F. The disadvantages of black roofs and this massively increased surface temperature include:
- Greater deterioration of roofing surface
- High levels of roofing waste sent to landfills
- Higher maintenance costs
- Increased cooling energy use and higher utility bills
- Reduced indoor comfort
- Higher peak electricity demand, which is the maximum energy load an electric utility experiences to supply customers instantaneously
- Raised electricity production costs, and a potentially overburdened power grid
- Increased air pollution due to the intensification of the urban heat island effect
Any building with a darker colored roof will consume more energy for air conditioning than a building with a cool roof. This increases operating costs. A cool roof can provide building energy costs savings. This can be a huge consideration when deciding what kind of roof you want.
Now that you know what is a cool roof, and the many advantages it brings, you may want a cool roof for your home or business. Our roofing experts at Mosaic Roofing in Denver can help you. Give us a call to discuss your roofing needs and how our professional installation services will enable you to start enjoying the many benefits of a cool roof.