National Coatings Blog

Your Roof Needs A Cool Roof in Order to LAST

Posted by Nicole Gale on Thu, May 09, 2019 @ 07:27 AM
Cool Roof last2

We all look forward to warm, sunny weather during the summer, but did you know the sun's infrared light and ultra violet (UV) rays will negatively affect your roof's membrane causing premature aging, leaks and destruction? 

What are Infrared and Ultra Violet Rays?

Sun-resized-600Infrared is the invisible portion of light that is next to the red visible light in the light prism. It makes up 57% of the total energy from the sun and is the portion of sunlight that provides heat. Ultra Violet or UV Rays are what make up the smallest portion of the sun's energy, using only a total of 3%. These rays contain shorter wavelengths and are responsible for sunburns and skin cancer.

The Sun's Energy Breaks Down
Roof Membranes Causing Failures

The combination of infrared light and UV rays create the perfect storm so to speak when it comes to roof failures. The infrared light beats down on the surface of the roof, heating up the membrane, creating a very hot surface. The darker the roof substrate (such as asphalt and mod bit roofing), the more the roof absorbs the heat. The issue with the heat is, it will break down the chemicals in the roof membrane, causing your water-tight membrane to be in jeopardy. UV ray's are slightly different when attacking the roof surface as they cause various chemical reactions to occur within the roof membrane. It is the same idea as to how UV rays change your skin cell structure and cause it to mutate and become skin cancer if you do not protect your skin properly. These various chemical reactions cause chalking, splitting, shrinkage, and embrittlement to your roof membrane.

All Types of Roofs Benefit from a Cool Roof

While dark surfaces are generally affected worse than lighter surfaces, all roof tops are affected by the sun's energy. If you want to be sure your roof is protected from the harmful sunlight, using a highly reflective roof coating such as, AcryShield A590 will offer outstanding protection and longevity to your roof. This is important on aged roofs because it can prolong the roof life, allowing you to avoid a costly tear-off, it is also very important to protect your new roof and continually maintain it throughout the years so you can be leak-free indefinitely. 

National Coatings has several highly reflective coatings with superior UV protection. These acrylic and silicone coatings, are excellent in restoration, maintenance and new construction projects. Below you can find a list of our Cool Roof Coating products that can be applied over a wide range of roofing membranes including: Hypalon, TPO, EPDM, PVC, BUR, Mod Bit, Asphalt, Metal, Concrete and Spray Polyurethane Foam (SPF).

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