Green Roofs, Blue Roofs & Podium Decks

Virtually any type of roof structure can accommodate a Green Roof, including domestic and commercial and on both new-build and retro-fit projects. The significant benefits of a Green Roof are wide ranging, such as helping to mitigate the effects of climate change, to whole-life cost benefits or by simply adding a natural aesthetic to an urban environment.

As much as 95% of rainfall on undeveloped land is naturally absorbed into the vegetated surface whilst the remainder runs off. Urbanisation and development of land creates hard impervious surfaces, which absorb only 5% of the rainfall leaving the remaining rainfall to run-off into both natural and man-made water systems which struggle to cope with the volumes. This has been highlighted in recent flooding events occurring all over the country.

Green roofs can play an important role in mitigating these events especially when designed as an integral element of a sustainable urban drainage system, also known as SuDS. SuDS demands that water falling across a development site is not simply channelled into storm water drains and discharged into the local river. Instead the drainage is designed to mimic that found in nature where water is attenuated, treated and infiltrated through natural processes.

Extensive Green Roofs

Extensive Green Roofs are the most common type and are relatively self-sufficient; they are not designed or constructed with the intention of being trafficked by pedestrians. Whilst not providing any kind of amenity area they do contribute to improving air quality, reducing the visual impact of the roof and assist in controlling rain water run-off/ harvesting as well as contributing to the acoustic and thermal properties of the roof.


Blue roof systems using drainagegeocomposites from ABG Geosynthetics


Intensive Green Roofs

Intensive Green Roofs can be viewed very much like a garden area and may be landscaped to include trees, lawns, flower beds and paved areas. With an intensive roof the only real limit to its scope is the weight of the system and the structure necessary to support it. Many modern developments incorporate landscaped roofs at ground level, for example above basement areas and underground car parks. These are commonly referred to as podium decks. The decked areas themselves create additional usable space in urban developments. 

Blue roofs

Blue Roofs are a more recent development which are explicitly designed to attenuate rainwater rather than drain it off as quickly as possible as in traditional roof drainage design. ABG blueroof offers a new concept in the management of storm water by collecting and retaining rain fall within the actual roof structure before discharging at a controlled rate. This is particularly beneficial on sites where land take is tight, such as in urbanised areas, where installation of other attenuation techniques such as ponds or subterranean tanks are not feasible.

A blue roof offers the amenity and insulating benefits of a green roof, but also forms an integral source control and attenuation element within the SuDS design on modern developments, and often eliminates the requirement for storage capacity in other areas of the site.

Like green roofs blue roofs are suitable for use on a wide range of substrates and are compatible with most modern waterproofing systems. They are also flexible when it comes the roof build up being equally as effective on an uninsulated podium construction as they are within a warm or inverted roof construction.

ABG green and blue roofs have been used extensively across many leading sustainable developments across the UK. As with many sustainability aspects the final type and design of the green roof system is dependent on the project specific requirements. ABG Geosynthetics offer a complete green and blue roof service from design installation and on-going maintenance contracts.

To deliver the varying requirements ABG offer a broad range of final surface finishes available including extensive, intensive and biodiverse vegetation along with paved finishes typical of a podium deck.

Click for recent Green & Blue Roof Projects

Roofdrain

Roofdrain is designed for use in extensive green roof systems. It provides both drainage and attenuation in a convenient, lightweight and cost effective system.

more...

Roofdrain drainage geocomposite for green roofs, blueroofs and roof SuDS attenuation

Blue Roof Systems

blueroof offers a new concept in the management of storm water. Changing weather patterns means rainfall events have become more extreme challenging the way water is managed. blueroof utilises the roof construction for the attenuation of storm water releasing it at a controlled rate in the period following the storm. 

more...

ABG blue roof Blue Roof System for Green Roofs from ABG geosynthetics
 

Product Literature

 

Products

Roofdrain

Roofdrain is designed for use in extensive green roof systems. It provides both drainage and attenuation in a convenient, lightweight and cost effective system.

more...

Roofdrain drainage geocomposite for green roofs, blueroofs and roof SuDS attenuation

Blue Roof Systems

blueroof offers a new concept in the management of storm water. Changing weather patterns means rainfall events have become more extreme challenging the way water is managed. blueroof utilises the roof construction for the attenuation of storm water releasing it at a controlled rate in the period following the storm. 

more...

ABG blue roof Blue Roof System for Green Roofs from ABG geosynthetics
 

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Product Literature

 
 

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