How a Green Roof Can Keep Your Commercial Roof Cool

How Hot Is Your Commercial Roof In the Summer? Dark roofs absorb light converting it to heat and emitting it back into the atmosphere. White roofs reflect the light, so there is less absorption and transference of heat. Green roofs, on the other hand, absorb sunlight and even put it to good use.

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How Hot Does Your Commercial Roof Really Get In the Summer?

Walking across a blacktop parking lot on a sunny day can feel like the temperature just went up 20 degrees, because surface material has a lot to do with temperature. If you move from the blacktop to the grass and you can instantly feel the difference.

It’s the same with roofs. Dark roofs absorb light — up to 90% of solar energy — and convert it to heat, emitting it back into the atmosphere. White ones absorb less light by reflecting the light without transferring it into heat.

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