Contractor resources for cool roofing

There are literally thousands of product options just for cool roofing (including Conklin), so specifying the appropriate roof system for your customer can be a daunting task.

 

Cool roofs are available in all colors for virtually every roofing type, although white is still the most efficient option. You can determine the energy performance of a material by understanding how a cool roof reflects and emits the sun’s heat back to the sky (as opposed to allowing it to transfer it to the building below). Once you understand the basic technology of cool roofing, there are several resources available to help you make a confident, informed decision on the next project you bid.

 

Measuring Cool Roofing
Solar reflectance and thermal emittance are the two key metrics determining how “cool” a roof will stay by its ability to reflect solar energy and emit absorbed heat. They will appear as a value between 0 and 1, with a higher value signifying a “cooler” roof. Solar Reflectance Index (SRI) is a third metric that is calculated using a product’s solar reflectance and thermal emittance values, and is measured on a scale of 0 to 100 with a higher number symbolizing a more energy-efficient roof. SRI is sometimes used in place of solar reflectance and thermal emittance as a single-value alternative.

 

Cool roof standards often specify higher reflectance requirements for low-slope versus steep-slope roofs. This difference in values is a result of the energy impact the surface faces, as the flat surface of a low-slope rooftop is exposed to greater solar radiation than a pitched roof.

 

Impact from Aging and Exposure to the Elements
Another factor where roofing products are unique is how they perform from an energy efficiency standpoint after exposure to outdoor conditions.. Each product is tested initially as available off the shelf, as well as after it has been weathered by outdoor elements.

 

A study by the Oak Ridge National Laboratory and DLR consultants found that the loss of effectiveness of solar reflectance for most roof types leveled out at around three (3) years, so it is an industry standard to test roofing materials after three years of aging to determine their aged value. Code bodies sometimes reference this aged value, as it more accurately reflects the performance of the roof through its life cycle.

Minimum Rated Values and Standards
The Cool Roof Rating Council (CRRC) is a third-party rating program that works with manufacturers to rate their products’ solar reflectance and thermal emittance. The Rated Products Directory is a free online database of roofing products rated by the CRRC.

 

Code bodies and voluntary green building programs define a cool roof by specifying a minimum value for initial and aged solar reflectance, thermal emittance and SRI, or a combination thereof. The CRRC does not set minimum standards for products to be listed on its Rated Products Directory, but provides unbiased and credible ratings for all products. You can search through more than 2,000 products by categories such as material type, color or manufacturer. You can even search by minimum initial or aged solar reflectance, thermal emittance or SRI value in order to fine-tune your search to products that meet a specific code or program standard.

While code bodies set cool roof minimum standards as guidelines, many people find it more realistic to specify a cool roof based on quantifiable benefits. The U.S. Department of Energy (DOE) and the Environmental Protection Agency (EPA) have both created cool roof calculators to determine energy and monetary savings based on climate, building size, HVAC equipment and other important factors.

• The DOE Cool Roof Calculator offers savings estimates for small- and medium-sized facilities with flat roofs.
• The EPA Roof Savings Calculator is designed for both residential and commercial buildings, and it allows you to define information about your existing and proposed roofs for comparison.
• The cool roof calculators show the tangible savings gained from cool roofs, yet cool roofs offer several other environmental benefits. Eco-conscious designers may also want to consider the cradle-to-cradle aspects of their material choices, including recycled content, end of life recyclability and toxicity of materials.

Please watch this short video to learn more about adding energy efficient, faster-to-install, higher profit Conklin cool roofing systems to your roofing company's service offerings:

 

Join the Conklin Roofing Systems team!

The Conklin Company provides innovative roofing systems for a wide variety of roofing applications, including metal roof renovation, single-ply recoat, fabric reinforced, polyurethane foam and EPDM coating systems. Conklin’s roofing systems are VOC compliant, lightweight, easy to maintain, and EPA Energy Star Rated.

Conklin is the nation’s #1 acrylic coating company by volume, offering low overhead and high profitability, 30 years of proven labor-saving applications, regional and national training programs, and low start-up costs.

Conklin Roofing Systems have been applied to over 2 billion square feet of roofing throughout the United States since 1977. We were the first manufacturer of acrylic roof coatings, which protect investments from the weather and provide energy efficiency. Our top products have met or exceeded the strictest standards for fire rating and code approvals.

For more information, please contact Randy Patton at (309) 303-3128, via email at rpatton55@comcast.net or visit WhiteRoofingSystems.com to learn more.