In hot climates, roofs often get very hot and absorb a lot of the sun’s energy. That heat raises interior temperatures and can contribute to air conditioning requirements and higher energy costs.
Cool roofs use lighter colors and reflective engineering to reflect solar energy from the sun, reducing heat roofing contractors sunshine coast and making homes more comfortable during the summer. This is a relatively low-cost, low-tech solution that’s growing in popularity around the world.
Which Roof Will Stay Cooler in the Sun?
A cool roof has two properties: solar reflectance (SR) and emissivity (TE). These are measured on a scale of 0 to 1 and the higher the values, the cooler the roof will be in the sun.
What’s more, a clean white roof that reflects 80% of the sun’s light can stay about 31C cooler than a dark roof that reflects only 20% on a hot day.
Metal roofing is another way to keep the interior temperature down during the hottest days of the year. This is because metal reflects the sun’s rays rather than absorbing them.
There are several different roofing materials that can help keep a house cool during the summer, including foam roofs, asphalt reflective shingles and white roof coatings. The key to choosing the right material is to look for a product with a high solar reflectance power and a durable finish.
For steep-sloped homes, some traditional shingle colors have naturally reflective properties, especially those made with earth tones such as brown, green or terracotta. These tiles may also qualify for Energy Star ratings.