Onyx Black Roof Versus White Heat

So a black thing should be much better at emitting light than a white thing.

Onyx black roof versus white heat.

Edit answer for another 13 minutes yes black will be hotter. White clothing isn t exactly a. Others absorb the heat. The relative ability of the roof surface to radiate absorbed heat cool roof rating council.

The sun s radiation hits the roof surface some heat is absorbed by the roof and transferred to the building below solar reflectance. How a roof reacts to heat from the sun. Maybe the black clothing prevents body heat from reflecting back on the human thus keeping the body cooler than a white outfit. It comes down to other variables such as your neighborhood home s architectural style and your personal preference.

If you are re roofing your home and looking at how to match roof shingles to your house color there is one rule to follow. White houses allow the roof to be a truly blank canvas. Dave that s right. Some colors reflect heat.

Chris so if you have solar panels on your roof for example that are heating water you don t want the water going through them when it s colder outside than the water is because you re turning them into very effective giant radiators. Almost any color will look fantastic. Owens corning s colour comparison tool allows you to compare shingle colours. Once your results are displayed click to view a larger image or see your selection on a home with our design eyeqï design visualization program.

Stick with the basics. However except for reflective coated shingles some energy star rated shingles for instance or white or bare metal there is only about a 10 15 difference in the amount of energy absorbed between black and say a tan or beige and only a few percent between black and a gray red dark blue green or brown. The most popular colors of roof shingles are shades of black brown gray and red. In general dark colored roofing materials will absorb the heat and cause your attic and or the top of your house to be warmer than a lighter colored material.

The fraction of solar energy that is reflected by the roof thermal emittance. Below are a few common roofing colors that can make a big difference in your heating and or cooling bills.