Why is Green Wall System established?
The green architectural design is becoming a trend in Singapore to transform into a sustainable liveable city. This green design concept makes the property visually different and also it makes the surrounding air clean and calm environment for both indoor and outdoor living space. The environmental friendly green living has made the demand for a green solution approach and also to achieve a green mark certified for their properties. It helps in greening the building with different forms of vegetated wall surfaces and also with different kinds of plants either rooted into the ground or in the wall itself or in panels and pots attached to the facade.
Types of Green Wall System:
The green wall system can be divided into a wider range of systems like urban hedges, stone walls, green screens and live curtains. But they are mainly divided into two main categories and they are as follows.
- Green Facades
- Living walls
Green facades are nothing but climbing plants growing on a wall either with no additional support or with the use of wire mesh frames, trellises or steel cables as a plant support. They are generally set outdoors, rooted in the ground. They can attach themselves to the walls of the building with minimal intervention. And they also don’t require additional irrigation. Another way to grow climbing plants on a wall is to plant on the top and allow growth to trail down it can be mainly used on internal walls and also in small enclosed areas. Some examples of the self-climbing plants are Hedera helix, Parthenocissus sp, or Wisteria sp. And some examples of the plants which can be trained against the wall are Camellia sp., Ceanothus sp., Chaenomeles sp., Coronilla Valentine.
This type of green wall system is more sophisticated than a climbing facade. Any plant species can be grown in this type. Indoor living walls are generally planted with tropical plant species due to the constant mild temperature and due to the lack of sunlight. Outdoor living walls are planted more with rustic plants. Living walls are also referred as “vertical gardens” as they are used to grow plants producing vegetables or fruits. When the living wall helps in growing herbs, then it is called as “herb wall”. These living walls are generally either Hydroponic or Substrate.
Hydroponic (soil- less) living wall usually does not require soil to grow. Soil only provides root support for the plant and only water is required. These are grown on pre-constructed panels prior to installation. When plants are ready, the panels are sent to site and attached to a framework on the side of wall or structure where it is to be covered. After installation plants will continue to grow and further cover the wall/structure.
Substrate (soil- based) living wall usually has molded troughs or containers that are built or attached to existing walls/ structure. The planting has soil-based substrates with a lightweight combination of recycled materials that contains the perfect balance of nutrients along with a free water draining medium. The installation and maintenance cost is less in this type as the natural water retention properties of the substrates allow irrigation system to be simple in design and construction purpose. The main disadvantage of this system is their weight relative to other solutions.
Many companies are building and installing green wall systems in Singapore. To name one Elmich has various green wall systems and also provides different green wall solutions. For more details Visit here.