Green roofs cut rooftop temperatures up to 40 degrees Fahrenheit
Green roofs, which are layered roof systems with waterproofing, drainage material, growth medium, and vegetation, are helping cities beat the heat.
They can drop rooftop temperatures by up to 40 degrees Fahrenheit, making buildings cooler inside and easing the need for air conditioning.
Instead of soaking up sunlight like regular roofs, these living roofs use plants to block heat and release moisture into the air.
Italy study: green roofs absorb rainwater
A study from southern Italy found that while traditional rooftops can get scorching hot (up to 74.3 degrees Celsius in June), green roofs stay much cooler, even 57-63% lower.
But it's not just about temperature: these roofs soak up rainwater, cut down on flooding, and give pollinators and birds a place to hang out in the city.
They cost more up front but save money over time with lower energy bills and longer-lasting rooftops, a win for both your wallet and the planet.