noun
rooftop greening; rooftop gardening; rooftop planting
Refers to the practice of covering roofs with vegetation for environmental benefits such as insulation, rainwater absorption, and urban heat island mitigation. Often used in architectural, environmental, and urban planning contexts.
このビルは屋上緑化によって夏の冷房費を削減している。
This building reduces summer cooling costs through rooftop greening.
市は新築の公共施設に屋上緑化を義務づけた。
The city mandated rooftop greening for new public facilities.