Cool Roof Benefits

A cool roof is one that has been designed to reflect more sunlight and absorb less heat than a standard roof. Cool roofs are made of a highly reflective roof coating systems. Nearly any type of building can benefit from a cool roof, but consider the climate and other factors before deciding to install one.

Just as wearing light-colored clothing can help keep you cool on a sunny day, cool roofs use solar-reflective surfaces to maintain lower roof temperatures. Standard or dark roofs can reach temperatures of 150°F or more in the summer sun. A cool roof under the same conditions could stay more than 50°F cooler.

Solar-Radiation-Infographic

The infrared image shows the surface temperature variation between parts of a roof that are uncoated versus the blue area, where our Ure-A-Sil cool roofing system has been applied. Once the application is complete on the entire roof, building owners will experience durable, weather-resistant protection of their assets and benefit from savings on energy costs and taxes.

Benefits of Cool Roofs

A cool roof can benefit a building and its occupants by:

  • Reducing energy bills by decreasing air conditioning needs
  • Improving indoor comfort for spaces that are not air conditioned
  • Decreasing roof temperature, which may extend roof service life.

Beyond the building itself, cool roofs can also benefit the environment, especially when many buildings in a community have them. Cool roofs can:

  • Reduce local air temperatures (sometimes referred to as the urban heat island effect)
  • Lower peak electricity demand, which can help prevent power outages
  • Reduce power plant emissions, including carbon dioxide, sulfur dioxide, nitrous oxides, and mercury, by reducing cooling energy use in buildings.

 

Cost and Energy Savings

A cool roof does not necessarily cost more than a non-cool roof, especially if you are installing a new roof or replacing an existing one. Major roof costs include upfront installation (materials and labor) and ongoing maintenance (repair, recoating, and cleaning). Additional cool roof costs include specialized materials and labor.

Cool roofs can save money several ways, including energy savings, rebates and incentives, HVAC equipment downsizing, and extended roof lifetime. One way to estimate how much energy you would save by installing a cool roof is by using a cool roof calculator, available at DOE Cool Roof Calculator.

 

Learn About Tax & Energy Savings

Climate and Environment

Your climate is an important consideration when deciding whether to install a cool roof. Cool roofs achieve the greatest cooling savings in hot climates, they may not decrease energy costs in cooler climates but may save maintenance costs long term by reflecting much more UV than a black roof is capable of.

Moisture Control

In warm, moist locations, cool roof surfaces can be more susceptible to algae or mold growth than hot roofs. American WeatherStar’s roof coatings include special chemicals that prevent mold or algae growth in the system.

 

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