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Solutions with geosynthetics

   Roof
   gardens




                             Green roofs

Page 1 of 10
                              www.geosyntheticsworld.com
Roof gardens and Green roofs

Two systems- Two purposes
• Roof gardens:
    ●
      To be used as a garden
    ●
      with rich vegetation on a thick layer of
    soil
    ●
      requires maintenance

• Green Roofs:
       • environment-friendly roof with a thin
               vegetal cover
       • not to be used as garden
       • low maintenance vegetation
    (mosses, sedums, herbs) on a thin layer
    of lightweight substrate


Page 2 of 10
                                        www.geosyntheticsworld.com
Roof gardens and green roofs

  Roof gardens and green roofs
  Advantages of roof gardens & green roofs in general:
  • pleasant appearance, esthetics
  • thermal insulation
  • protection of the liner against UV light and great temperature
  variations
  • sound absorption
  • water absorption (less discharge to sewer system, less tax
  depending on country)
  • dust binder




Page 3 of 10
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Roof Garden with conventional drainage system




Page 4 of 10
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Roof garden drainage with geocomposite drains




Page 5 of 10
                        www.geosyntheticsworld.com
Advantages of geocomposite drain sheets



           Advantages of Enkadrain specifically
         • lower construction height and weight than for mineral drain
         layers
         • optimal protection of the liner
         • light weight and flexibility allow easy transport to a roof and easy
           Installation
         • Drainage of excess water




Page 6 of 10
                                            www.geosyntheticsworld.com
Required discharge capacities

Horizontal applications


To be determined in accordance with local standards and conditions.
As an indication we show the discharge capacity for flat roofs and roof
gardens per m2 roof area in accordance with DIN 4095:

   Cover                                         Discharge
                                                  in l/(s.m2)

   gravel                                        0.02-0.03

   light weight substrate for green roofs        0.01-0.02

   natural fertile soil for roof gardens           < 0.01




Page 7 of 10
                                            www.geosyntheticsworld.com
Enkadrain for green roofs




               Plant Material
                                                               Drainage
                       Growth Medium                           in accorance
                                                               with
                                Pre-Vegetated Mat              DIN 4095
                          Water Retention Layer

                                 Drain & Filter Layer

                                Root Barrier

                          Roof Membrane
                          Substrate


Page 8 of 10
                                               www.geosyntheticsworld.com
Roof gardens and green roofs

Another possible detail       Standard solution for a new
                              roof (insulation under the
                              waterproofing):
1
                              1. vegetation
2                             2. substrate
                              3. Enkadrain (composite
3                             drainage product
4                             4. waterproof liner
5                                   (root-resistant )
6                             5. thermal insulation
7                             6. vapor barrier
                              7. roof




Page 9 of 10
                          www.geosyntheticsworld.com
The technical data and information set forth in this slideshow
reflect our best knowledge at the time of issue. The slideshow is
subject to changes pursuant to new developments and findings,
and a similar reservation applies to the properties of the products
described. We do not undertake any liability for results by usage
of these products and information. We do not take any
responsibilities. This slideshow is only for general information.
Please check with your local conditions, soil, climate, plants and
vegetation properties.




Page 10 of 10
                                    www.geosyntheticsworld.com

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Roof gardens and green roofs

  • 1. Solutions with geosynthetics Roof gardens Green roofs Page 1 of 10 www.geosyntheticsworld.com
  • 2. Roof gardens and Green roofs Two systems- Two purposes • Roof gardens: ● To be used as a garden ● with rich vegetation on a thick layer of soil ● requires maintenance • Green Roofs: • environment-friendly roof with a thin vegetal cover • not to be used as garden • low maintenance vegetation (mosses, sedums, herbs) on a thin layer of lightweight substrate Page 2 of 10 www.geosyntheticsworld.com
  • 3. Roof gardens and green roofs Roof gardens and green roofs Advantages of roof gardens & green roofs in general: • pleasant appearance, esthetics • thermal insulation • protection of the liner against UV light and great temperature variations • sound absorption • water absorption (less discharge to sewer system, less tax depending on country) • dust binder Page 3 of 10 www.geosyntheticsworld.com
  • 4. Roof Garden with conventional drainage system Page 4 of 10 www.geosyntheticsworld.com
  • 5. Roof garden drainage with geocomposite drains Page 5 of 10 www.geosyntheticsworld.com
  • 6. Advantages of geocomposite drain sheets Advantages of Enkadrain specifically • lower construction height and weight than for mineral drain layers • optimal protection of the liner • light weight and flexibility allow easy transport to a roof and easy Installation • Drainage of excess water Page 6 of 10 www.geosyntheticsworld.com
  • 7. Required discharge capacities Horizontal applications To be determined in accordance with local standards and conditions. As an indication we show the discharge capacity for flat roofs and roof gardens per m2 roof area in accordance with DIN 4095: Cover Discharge in l/(s.m2) gravel 0.02-0.03 light weight substrate for green roofs 0.01-0.02 natural fertile soil for roof gardens < 0.01 Page 7 of 10 www.geosyntheticsworld.com
  • 8. Enkadrain for green roofs Plant Material Drainage Growth Medium in accorance with Pre-Vegetated Mat DIN 4095 Water Retention Layer Drain & Filter Layer Root Barrier Roof Membrane Substrate Page 8 of 10 www.geosyntheticsworld.com
  • 9. Roof gardens and green roofs Another possible detail Standard solution for a new roof (insulation under the waterproofing): 1 1. vegetation 2 2. substrate 3. Enkadrain (composite 3 drainage product 4 4. waterproof liner 5 (root-resistant ) 6 5. thermal insulation 7 6. vapor barrier 7. roof Page 9 of 10 www.geosyntheticsworld.com
  • 10. The technical data and information set forth in this slideshow reflect our best knowledge at the time of issue. The slideshow is subject to changes pursuant to new developments and findings, and a similar reservation applies to the properties of the products described. We do not undertake any liability for results by usage of these products and information. We do not take any responsibilities. This slideshow is only for general information. Please check with your local conditions, soil, climate, plants and vegetation properties. Page 10 of 10 www.geosyntheticsworld.com