A white roof when kept clean reflects more than 80 percent of the sunlight that falls on it.
Paint roof white 2017.
A white roof reflects around 85 of.
When applied properly a white roof coating should be able to expand and contract even with the most extreme thermal cycles and not crack bubble lift chip or peel.
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Find a medium gray that is dark enough to stand out from your white roof but not overbearing.
For trim choose a white that matches your roof if possible.
Secretary of energy and a nobel prize winning scientist has said that painting roofs white or another light color would help to reduce global warming by reflecting sunlight back into space it would be like removing every vehicle from the planet for 11 years.
Improving your roof s reflectivity by just 40 to 50 percent can reduce your cooling bills by around 20 percent.
That in turn keeps your whole house cooler.
White roof coating should have a very thick consistency.
But there are problems with this approach mainly finding a paint that will adhere to the asphalt shingles and last for more than a few years.
The elongation properties of a high quality coating should be in the range of 375 400.
The easiest way to reflect the sun s rays is to paint a roof white something the greeks have been doing for centuries.
If not use a darker gray or add a bit of color with rose or burgundy around the windows doors and roof.
The thing that no one discusses is how to paint your roof.
The same principal can work for your roof.