National Coatings Blog

Cool Roof Coatings Versus Black Roofs – What’s the Big Deal!

Posted by Nicole Gale on Thu, Mar 05, 2015 @ 11:30 AM

UC_Davis_Rec_HallNational Coatings has conducted several tests in their lab, as well as, had their cool roof coatings tested by the Cool Roof Rating Council (CRRC) and several other independent, non-biased organizations to determine and evaluate the results of their roof coatings against the sun’s destructive heat.  These tests have proven white roof coatings or cool roof coatings compared to un-coated, black rooftops provide building owners and tenants with significant benefits.

Cool Roof Coating benefits include:

  • Air Conditioning Energy Consumption of the Building is Greatly Reduced
  • Lengthen Roof Life - cool roof systems provide additional UV protection allowing the roof to remain more flexible and durable for longer
  • Reduced Roof Maintenance Costs
  • Environmentally Friendly – lowers surrounding air temperature around the building, reduces urban heat island effect and smog in populated areas
  • Improves Comfort for Occupants Inside the Building
  • Complies with Codes and Green Building Programs Nationally

A white surfaced, cool roof coating system with 100% of the sun’s radiated heat projected onto the roof top will absorb approximately 8% of the heat while immediately reflecting 92% of the sun’s heat back into the atmosphere, away from the roof. (These results are proved results based on using our AcryShield Ultra High Reflectance A590 roof coating.) This guarantee’s a cooler indoor ambient air temperature without any air conditioning usage. 

CLICK HERE TO FIND OUT: What's The Difference  Between "Cool Roof"  Versus A "Normal" Roof? An un-coated, black roof surface with the exact same scenario absorbs 69% of the sun’s heat. That is 61% more heat absorbed into the building compared to the cool roof surface.  Black roofs are only able to reflect 31% of the sun’s heat away from the building, causing the inside of the building to heat up much quicker, requiring a larger amount of energy consumption to cool the building. This added heat absorption also leads to premature aging as the roof surface dries out and becomes brittle much quicker, losing it’s ability to expand and contract with the building during temperature changes.

Harbor Freight Tools in Camarillo, California experience this exact situation. They had a black BUR roof and restored it to new (avoiding a costly tear-off and business closure during application) with a Cool Roof Coating System and very impressed.

After the National Coatings' Cool Roof was installed we definitely noticed a difference in building temperature. It's not a marginal difference, either. It is between 15-20 degrees cooler inside the warehouse and store." - Jerry Moore, Facilities Director at Harbor Freight Tools. Click here to read their full Case Study for more information!

 Commercial Roofing Contractors


Tags: Cool Roof Coating, cool roof coating information, Reflective Roof Coatings