What are the benefits of green roofs?

The green roof is the one building element that improves with age! Green roofs provide many benefits. A partial list includes:

  • Controlling stormwater runoff, erosion and pollution, lessening the impact and cost of processing in sewage treatment plants and extending capacity.
  • A green roof can hold 60 to 80 percent of a rain event. Water is released more slowly, helping to filter particulate matter out of water running onto landscapes and hardscapes.
  • Water has more chance of running into the landscape as irrigation.
  • Improving water quality
  • Adds oxygen to the air
  • Mitigates urban heat-island effects, cooling and cleaning the air
  • Conserving energy
  • Reducing sound reflection and transmission
  • Reducing heating and cooling energy costs
  • Creating wildlife habitats and biodiversity
  • Reduces the spread of wildfires
  • Increases the life of the roof, reducing landfill impact
  • Can provide space for a rooftop farm
  • Can provide habitat for pollinators
  • When paired with solar panels, increases their overall performance by as much as 15 percent
  • Improving the aesthetic environment in both work and home