A green wall is a vertical wall fully clad with plants through a facade-bound system of trays, panels or mats with substrate and irrigation. Unlike climbing plants, the plants root in the structure itself, so the wall is instantly and fully green. In English this is called a living wall.
Build-up
A green wall usually consists of:
- Support structure — a frame or battening in front of the wall, set off from the structure to keep out moisture
- Growing medium — substrate, mats of rock wool or felt, or individual pots and cassettes
- Irrigation system — pipes that supply the plants automatically with water and nutrients
- Planting — perennials, ferns, mosses or herbs
Application
Green walls are used both outdoors and indoors:
- External facades — as insulating, cooling and decorative facade greenery
- Interiors — in offices, halls and homes for a better indoor climate and acoustics
- Moss walls — low-maintenance walls of moss, mainly indoors
Points to watch
A green wall needs a reliable irrigation and drainage system, a moisture-protecting separation from the wall and regular maintenance. If the water supply fails, the planting dies off quickly.
Related Terms
- Green facade
- Vertical garden
- Living wall
- Green roof
- Indoor climate
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