Antwerpen, Belgium
City population: 499254
Duration: 2016 – 2016
Implementation status: Completed
Scale: Sub-microscale: Street scale (including buildings)
Project area: 500 m2
Type of area: Building
Last updated: October 2021

On an office building, one of the largest green walls of Belgium was created (50.000 plants) that improves air quality, reduces heat stress, and improves biodiversity. The green wall also isolates the building, resulting in less energy use (Ref. 1-3). The wall consists of a variety of native plants and is irrigated with water collected on the roof of the building (Ref. 1, 2).

http://atlas.naturvation.eu/node/1545/edit

Overview

Nature-based solution

  • Nature on buildings (external)
  • Green walls or facades
  • Green areas for water management
  • Other

Key challenges

  • Climate action for adaptation, resilience and mitigation (SDG 13)
  • Climate change mitigation
  • Water management (SDG 6)
  • Stormwater and rainfall management and storage
  • Green space, habitats and biodiversity (SDG 15)
  • Green space creation and/or management
  • Environmental quality
  • Air quality improvement
  • Noise reduction

Focus

Creation of new green areas

Project objectives

The main goal of the intervention was to reduce air pollution including particulate matter and carbon dioxide that meets the sustainability strategy of the designers of the green wall (Ref. 1).

Implementation activities

Creating a living wall consisting of 50.000 native plants (Ref. 1, 2, 3). Creating a sustainable irrigation system which captures storm water from the roof in an underground water basin which stores 20.000 liters of water, which is used for the irrigation of plants (Ref. 4, 5). "The walls were given a two-layer makeover: first insulation, then plants. The plants grow in panels filled with rock wool. The rock wool is wrapped in felt. The felt retains the plants and moisture. There is a rainwater tank of 20,000 liters underground. This is enough to always have water in stock for the entire wall garden. An irrigation pipe runs through the entire wall, which waters the plants. And that is necessary because the plants receive three liters of water per day per square meter. Since no soil is used in this system, the plants need to be watered constantly and get their nourishment from the fertilizer that flows through the irrigation system with the water" (Ref. 5).

Climate-focused activities

Climate change mitigation:

  • Install vertical or horizontal artificial surfaces that help with carbon storage and cooling

Main beneficiaries

  • Private sector/Corporate/Company
  • Citizens or community groups

Governance

Management set-up

  • Led by non-government actors

Type of initiating organisation

  • Private sector/corporate actor/company

Participatory approaches/ community involvement

  • Unknown

Details on the roles of the organisations involved in the project

The project was commissioned by Intervest Offices & Warehouses (real estate company). The green wall was created on one of their buildings, which is now called 'The GreenHouse'. The renovation of the building including the green wall is designed by Conix RDBM Architects and the green wall is implemented by Ambius Belux (plant company) and Sempergreen (company specialized in green roofs and walls) (Ref. 1, 2).

Project implemented in response to ...

... an EU policy or strategy? No
... a national policy or strategy? No
... a local policy or strategy? No

Financing

Total cost

Unknown

Source(s) of funding

  • Corporate investment

Type of funding

  • Direct funding (grants, subsidies, or self-financed projects by private entities)

Non-financial contribution

Unknown

Impacts and Monitoring

Environmental impacts

  • Climate change
  • Lowered local temperature
  • Reduced emissions
  • Enhanced carbon sequestration
  • Environmental quality
  • Improved air quality
  • Reduced noise exposure
  • Green space and habitat
  • Increased green space area
  • Increased number of species present

Economic impacts

  • Unknown

Socio-cultural impacts

  • Social justice and cohesion
  • Improved liveability
  • Improved access to urban green space

Type of reported impacts

Achieved impacts

Presence of formal monitoring system

Unknown

Presence of indicators used in reporting

No evidence in public records

Presence of monitoring/ evaluation reports

No evidence in public records

Availability of a web-based monitoring tool

No evidence in public records

References

https://cgconcept.be/antwerpen-kantoorpand-krijgt-groene-wand/