Verified by manufacturer 6 months ago
Extensive green roof system
Extensive green roof build-up suitable for flat or pitched roofs and new or retrofit applications. The benefits of a green roof are wide ranging, such as helping to mitigate the effects of climate change by providing an urban cooling effect, reducing surface water run-off and filtering pollutants from the surrounding air, through to maximising BREEAM credits, or simply softening the visual impact of the building.
The successful establishment of vegetation is supported by the Roofdrain 25mm reservoir / drainage board to prevent drying out or waterlogging of the growing media.
Extensive Green Roof comprises:
- Growing media:
ABG peat free media derived from sustainable, 100% recycled, UK sourced materials. Using a specifically developed growing media can help provide the right growing environment for the selected vegetation and also reduce the load on the roof. The growing media can also be adjusted to support specific design requirements like calcareous applications.
Specifically selected to suit the final finish requirements of the client / end user. On extensive green roofs, low maintenance varieties such as mosses, herbaceous plants, sedums, wildflowers and grasses tend to be used.
- ABG Roofdrain:
Geocomposite reservoir board with multidirectional drainage function suitable for use underneath substrate layers of 150 mm and below. It is particularly useful on pitched roofs due to the profile of the cone shaped cuspates.
ABG Roofdrain allows the storage of water within the cuspates of the HDPE core, whilst facilitating the efficient drainage of any excess water away from the roof. This helps prevent the growing media from drying out or from becoming waterlogged. When used within a green roof construction, it provides a versatile system for the collection of rainwater at the base of the growing medium and for the prevention of water pressure on the structural waterproofing, whilst still allowing oxygen and nutrients to get to the roots of the plants.
Roofdrain consists of three components bonded together to create a single product. A filter textile is bonded to the upper part of the reservoir board to provide a separation layer that filters particles and fines down to 100 microns (µm), whilst preventing the substrate from any ingression into the reservoir layer.
The core is perforated to allow excess water to drain through into the flow channels underneath, preventing pooling and oversaturation of the plants. Finally, a protection geotextile is bonded to the underside of the reservoir/ drainage board to protect the insulation / waterproofing layer onto which the Roofdrain is placed.
Features and benefits:
To be determined by waterproofer.
ABG Roofdrain 25.
25 mm thick.
Reservoir capacity: 4.3 L/m².
Geotextile filter bonded to the upper part of the reservoir board.
Moisture retention mat
Protection geotextile bonded to the underside of the reservoir/ drainage board.
ABG Green Roof Access Chambers.
Purpose designed to create inspection chambers around outlets and irrigation points in green roof systems. They are manufactured from high grade powder coated aluminium offering excellent corrosion resistance. The base of chamber allows drainage via channels cut into the base. Both standard and parapet bases available in three different sizes of interlocking mid sections to cater for different levels of build-up. Each comes with a lockable lid.
A blend of water retaining aggregates, crushed brick and organic material.
Mixed to provide an extensive growing media to meet customer specifications. Extensive growing media is a versatile, lightweight general purpose green roof growing media, ideal for sedum matting systems and systems supporting hardier lower maintenance plants such as sedum, wildflowers and grasses.
In accordance with the landscape design or ecology plan.
Mixture of sedum, wildflower turf and plug plants.
ABG Abpro Aluminium Profiles.
Designed for use in variety of green or ballasted roof applications. They can be used either as an edge restraint, or where a solution for retaining or separating the roof garden materials is required. Lightweight and robust, they can be cut to length and angled to suit the roof design, are available powder-coated in any colour and are connected with plate connectors.
All operatives carrying out the vegetation installation should refer to the ABG installation and establishment guidelines for vegetation.
ABG Installs' maintenance service
ABG's contracting business - ABG Installs - offers a professional maintenance service using experienced green/blue roof technicians and can provide an estimate for carrying out on-going maintenance. Contact the green roof maintenance team on Tel: 01484 354836.
Establishment watering requirements: Surface watering for the first 10 weeks following installation (to ensure the substrate remains moist to the touch).
It is the responsibility of the roofing contractor to liaise with the main contractor/ building owner to provide water and ensure that the planted growing medium is thoroughly irrigated immediately after installation. An adequate mains water supply of sufficient pressure must be available and operational prior to the plants being installed.
A1-A3 (production stage) as defined in BS EN 15804
1.72 kg CO₂ eq/kg
NBS BIM object standard
This BIM object has been authored to meet the requirements of the NBS BIM object standard.
Find out more about the NBS BIM object standard.