Walls, roofs, fences and other structures in our neighbourhoods can become homes for native plants and animals. Greening these structures also keeps us healthier.
A green roof is one with plants growing on it. The roof is partially or completely covered with a waterproof layer or planter-style boxes, soil (or similar) and plants.
There is a huge variety of green wall or ‘vertical garden’ designs. The main types are where plants grow in planter boxes or in a lightweight type of soil attached to a wall.
Our Green Cover in NSW Technical Guidelines include information about how green roofs, walls and street design can cool our streets and create more liveable and resilient communities.
Benefits of green roofs and walls
Green roofs can:
- provide a place for native animals and plants to live and feed
- provide recreational space
- grow food
- add an interesting architectural feature
- add value to a property
- block out noise
- help cool the air
- insulate a building and help save on energy bills
- capture and filter rain and stormwater and reduce local flooding
- make solar panels more efficient.
The Royal Institute of Chartered Surveyors has developed a guidance note about what to consider when you install a green roof or wall on existing or new commercial or residential buildings.