Green Roof Absorb Rainwater

February 08 2019 10 48 am share on facebook.

Green roof absorb rainwater. Up to 75 of rainfall is absorbed by an extensive living roof and up to 90 is absorbed by an intensive green roof system. Green roofs absorb rainwater grow food. It helps plants and food crops flourish and it keeps grasslands green and lush. A green roof absorbs rain water by the water buffering in the plants substrate and drainage layer.

Excess water drips from the roof gradually so drains are not overwhelmed by a sudden deluge. Keep in mind that this assessment only applies to the green roof footprint which is typically less than 90 of the building footprint not the whole parcel being developed. By using green roofs as rainwater capture areas the amount of collected water for reuse will be reduced already due to the absorbed amount of water in the system itself. Green roof systems are one of the best ways to manage stormwater runoff by reducing and delaying.

But too much of it especially in the city can lead to flooding causing sewers to overflow and carry pollutants and contaminants to nearby streams and waterways. Green roofs absorb rainwater and grow food. Green roofs can be effective in both urban and rural areas as a solution to managing rainwater drainage.