Pre-cutivated vegetation mat on a water retention layer

Voorgekweekte sedummatten op waterhoudend geotextiel

An extensif green roof system(who require practally no maintenance) for roofs with only a slight slope, a normal exposure to climatic conditions (rain, wind, sun).

This system is applied on pitched roofs with a maximal slope of ±30° (if they’re not S or SE orientated).

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Composition

1st layer: Water retention layer
A mechanically bonded fabric produced from recycled synthetic acrylate 70/30.

When the roof has a S or SO orientation, or when the slope >20°, it’s recommended to install 2 layers of water retention layers.

2nd layer: pre-cultivated vegetation mats
A flexible vegetation carrier consisted of a synthetic fleece sewn to a three-dimension flexible matting of looped polymeric filaments. The three-dimensional polymer matting is filled with a growing medium and pre-cultivated with an even layer of low-profile, drought-tolerant vegetation (Sedum lydium, Sedum album, Sedum spurium, Sedum sexangulare, Sedum kamtschatikum, Sedum acre).
It’s accomodated with mosses and sedum species, especially cultivated for sunny and half shaded environments.
These vegetation mats are cultivated conform to the most recent specifications of the FLL (Forschungsgesellschaft Landschaftsentwicklung Landschaftsbau E.V.) for approximately 9 months and have a coverage of at least 75%.

Fuctional properties

Evergreen vegetation, variable for seasons and insolation.
Florescence from may untill august according to the different species
The extensif vegetation consist of slow growing plants who require practally no maintenance nor trimming or mowing.
The used species endure long periods of draught and only need irrigation after installation or extreme dryness.
This green roof system retains ±50% of the rainfall (28l/m²). Stormwater retention relieves excess volume from overburdened sewer systems and filters stormwater pollutants.
By installing green roofing the waterproofing system is protected agains UV-radiation with extends its lifetime.
Green roofs provide the ecologically and economically important benefit of rooftop insulation (during the summer) to reduce the amount of energy used for building air conditioning.
The combination of soil, plants and trapped layers of air within green roof systems acts as a sound insulation barrier.
Green roofs provide a habitat for native birds, insects, …
Test show that increased urban vegetation habitats help reduce atmospheric pollutions.
Maintenance : 1 visite each year and ± 50-100 g/m² organic fertiliser XF116

Dimensions and weight

Surface mass:
± 13.8kg/m² in dry condition with 1 water retention layer
± 14.6kg/m² in dry condition with 2 water retention layers
± 28.0kg/m² in saturated condition with 1 water retention layer
± 34.0kg/m² in saturated condition with 2 water retention layers

Thickness:
± 1.7cm ( 1 layer)
± 2.5cm ( 2 layers)