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Green Roofs:

Green roof infrastructure promises to become an increasingly important option for building owners and community planners. Green roofs can address many of the challenges facing urban residents. It is well proven that green roofs are an investment which provides a significant number of social, environmental and economical benefits.


There are two main usages for Green Roofs:

a functional & accessible roof garden with aesthetic, recreational & social benefits;
a habitat for flora and fauna as an alternative for natural habitats within the city, which may or may not contribute to the aesthetics of the city. 

Deciding which utilization to follow is essential and should be considered during the project planning stage, prior to commencing design, in all the cases, plant species must be suited to the nature of the green roof being planned.

Types of Green Roofs:

There are three general types of green roofs that can be differentiated mainly by cost, depth of growing medium and types of plants used:

Extensive Green Roofs

Semi Intensive Green Roofs

Intensive Green Roofs

An Extensive green roof has a shallow growing medium containing little nutrients which is suitable for less demanding and low growing plant communities. In Extensive green roofs, landscaping is designed to be more self-sustaining, requiring less maintenance and fewer expenses than other systems. Since they are lighter and require less structural support, they are well suited to roofs with little load bearing capacity. They are often not accessible. Extensive green roofs are often suitable for retro-fit installations on existing buildings, due to their relatively low load implications, although structural engineers must be consulted for any such applications.

Semi-Intensive Green Roofs in terms of requirements fall in between Extensive and Intensive Green Roof. More maintenance, higher costs and more weight are the characteristics for this green roof type compared to that of the Extensive Green Roof. It can be accessible but it is more likely to be only overlooked.

Intensive Green Roofs have a deep growing medium that supports a variety of landscape design and growth. They add considerably more weight to roofs; thus requiring additional structural support and added costs. They are mostly accessible and are used as recreational spaces, therefore safety features should be considered to allow public access. The amount of maintenance for Intensive green roofs is the highest among the three types of greening. There are no limitations in design and individuality.
In Green roof technology, the complete systems is built on site and is flexible in terms of types and nature of growing medium, drainage and protection layers.  Correct choice of components is the key in for maintaining roof conditions and sustaining the green roof.

Our sub surface drainage system provides unique and multiple benefits, is economical and reduces the overall weight of the green roof components.

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