CG Extensive Natural Meadow Retention

Ecological value
70%
Water storage
70%
Care and maintenance
25%
The Extensive Natural Meadow Retention system design is an effective way of delaying rainwater runoff and adding it to the natural water cycle through evaporation. It’s an appealing green roof solution due to its colourful vegetation with a diverse range of species. The basic system design of at least 10 cm can be partially increased to 25 cm to boost the different types of vegetation. The greater diversity of plants also encourages a variety of diverse habitats. Therefore, this green roof system is ideal as a biodiversity space and predestined for sustainable green roofs.

Use ClimaGrün’s own configurator and solution finder to obtain an overview, detailed system planning and calculation of the costs in no time.

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1Vegetation CG-SST​ , Natursaat Kräuter CG-NK, Natursaat Gräser CG-NG

Sedumsprouts CG-SST for extensive green roofs in combination with herb and grass mixtures, or for the formation of a pure sedum carpet.

Natural Seed Herbs CG-NK for extensive green roofs with herbs in combination with sedum sprouts or a sedum sprout-grass mixture.

Natural Seed Grasses CG-NG for extensive green roofs with grasses in combination with sedum sprouts or a sedum sprout-herb mixture.

2Multi-layer substrate extensive CG-MSE

Substrate for extensive green roofs, as a vegetation support layer for sedums, herbs and grasses, with high-quality aggregates.

3Separation & water storage fleece CG-TW 400

Separation & water storage fleece CG-TW 400 for use as a separating layer for optimum water distribution under the substrate layer.

4Retention module CG-RM 90

Retention module CG-RM 90 for extensive and intensive green roof, as well as the corresponding coverings, for temporary or permanent water storage.

5Protection & Storage Fleece CG-SSV 500

Protection & Storage Fleece CG-SSV 500 to protect the roof sealing with separating and water storage function,

Retaining element with restrictor CG-AED

Retaining element with restrictor CG-AED for the object-specific setting of a defined restrictor discharge.

Inspection chamber CG-KS 40 h10

Inspection chamber CG-KS 40 h10 for use above roof drains on extensive and intensive roof areas with pressure drainage.

Chamber elevation 40 CG-KSE 10

Chamber elevation 40 CG-KSE 10 as extension element for the inspection chambers CG-KS 40 h5 / CG-KS 40 h10 (Item number: 201020 / 201030

Technical info

Weight* approx. 150-230 kg/m²
System height approx. 20 cm
Roof pitch
Type of vegetation sedum, herbs, grasses
Run-off rate object-related adjustable
Retention volume approx. 80 l/m²
Water storage approx. 40-120 l/m²
* The material weight of the substrate varies locally; a temporary water backlog in the retention volume is not taken into account.

Extra products and add-ons

Tenders made easy

  • Water storage
    ClimaGruen protection & storage fleece CG-SSV 500 for the protection of the roof sealing with separation and water storage function and the following properties: Material PP (polypropylene) - recycled fibres, nominal thickness approx. 3,0 mm, weight approx. 500 g/m², water storage capacity approx. 2,0 l/m², static puncture resistance (EN ISO 12236) approx. 1.800 N, geotextile robustness class GRC 3, supply and lay professionally with 10 cm overlap.
  • vertical protection mat
    Building protection mat CG-BSM 6 for the protection of waterproofing at the edge area, supply and install according to planning specifications.
  • Retention module CG-RM 90
    ClimaGruen retention module CG-RM 90 for extensive and intensive green roof, as well as the associated coverings, for temporary or permanent water storage with the following properties: Material recycled polyolefin made of PP (polypropylene) - PE (polyethylene), nominal thickness approx. 90 mm, weight approx. 8,0 kg/m², void volume approx. 91 vol.%, retention volume approx. 82 l/m², compression strength (DIN EN ISO 25619-2) approx. 900 kN/m² at 7 % compression, supply and lay professionally.
  • Separation & water storage fleece CG-TW 400
    Separation & water storage fleece CG-TW 400 for use as a separation layer for optimum water distribution under the substrate layer, with the following properties: Material 100 % synthetic fibres, nominal thickness approx. 2,8 mm, weight approx. 400 g/m², opening width O90 (EN ISO 12956) approx. 0,063 mm, water storage capacity approx. 3 l/m²,static puncture resistance (EN ISO 12236) approx. 2.000 N, geotextile robustness class GRC 3, water permeability H50 (EN ISO 11058) approx. 30,5 l/m²s, supply and lay professionally with 10 cm overlap.
  • Gravel edges
    Gravel grain size 15/30, mostly round gravel, to form a gravel edge, 8 cm high and 40 cm wide. Supply and have the product laid according to planning instructions.
  • Multi-layer substrate extensive CG-MSE light
    ClimaGruen Multi-layer substrate extensive CG-MSE light for extensive green roofs, as a vegetation support layer for sedum, herbs and grasses, with high-quality aggregates and low weight, supply and install to the naturally compacted layer height of ____ cm. Material (main components) Brick chippings, lava, pumice, expanded clay, expanded shale, green waste compost, weight dry approx. 750 kg/m³, weight water-saturated approx. 1.300 kg/m³, max. water capacity ≥ 35 vol %, water permeability ≥ 40 mm/min, salt content ≤ 3,0 g/l, pH value 6,0 - 8,5, organic substances ≤ 60 g/l. The compaction factor is generally approx. 1,2, with pneumatic installation approx. 1,25.
  • Retaining element with restrictor CG-AED
    ClimaGruen retaining element CG-AED for object-specific setting of a defined restricton discharge with the following properties: Material retaining element stainless steel (1.4301), material retaining adapter PVC, height approx. 210 mm, outer diameter approx. 375 mm, drain pipe diameter approx. 110 mm, accumulation cylinder diameter approx. 110 mm, stepless variable height adjustment approx. 60 mm, drainage capacity approx. 6,2 l/s, object-specific restrictor holes, weight approx. 5,2 kg, supply and install professionally.
  • Inspection chamber CG-KS 40 h10
    ClimaGruen inspection chamber CG-KS 40 h10 for use above roof drains on extensive and intensive roof areas with pressure drainage, with the following features: Material PP (polypropylene, colour anthracite, dimensions 400 x 400 x 110 mm, weight approx. 1,9 kg, UV-resistant, manhole cover tread-resistant & closable, manhole base opening approx. 31 cm, supply and install professionally.
  • Chamber elevation 40 CG-KSE 10
    ClimaGruen chamber elevation 40 CG-KSE 10 as extension element for the inspection chambers CG-KS 40 h5 / CG-KS 40 h10, with the following features: Material PP (polypropylene), colour anthracite, dimensions approx. 400 x 400 x 100 mm, weight approx. 0,9 kg, UV-resistant, side wall with inlet slots 3 mm, with connection options for drainage pipes, reinforcement with base plate for raising the elements, supply and install professionally.
  • Separation profile ALU CG-TP
    ClimaGruen separating profiles ALU CG-TP for separating substrate and gravel or for finishing the green roof structure in extensive green roofs with the following properties: Material aluminium, with drainage points including butt connectors, profile height 100 mm, width support leg 130 mm, profile length: approx. 2,5 m, thickness 1,50 mm, supply and install professionally.
  • Sedumsprouts CG-SST
    ClimaGruen Sedum sprouts CG-SST for extensive green roofs in combination with herb and grass mixtures, or to form a pure sedum carpet. Supply the sprouts, approx. 5-10 different sedum species, at approx. 80 g/m², apply and work in professionally, then water the substrate sufficiently.
  • Natural Seed Herbs CG-NK
    ClimaGruen Natural seed Herbs CG-NK, for extensive green roofs with herbs in combination with sedum sprouts or a sedum sprout-grass mixture. Deliver the seed, approx. 50-57 different herbs, at approx. 2 g/m² and sow professionally, then water the substrate sufficiently.
  • Natural Seed Grasses CG-NG
    ClimaGruen Natural seed Grasses CG-NG, for extensive green roofs with grasses in combination with sedum sprouts or a sedum sprout-herb mixture. Supply the seed, approx. 5-7 different grasses, at approx. 5 g/m² and sow professionally, then water the substrate sufficiently.
  • Completion maintenance extensive sowing
    Work steps: Remove extraneous growth; reseed bare patches; mow vegetation after first seed maturity; dispose of green cuttings; water and fertilise sufficiently. Control and maintenance of gravel areas and drainage. Acceptance takes place at a projective ground cover of 60 %

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