Roof gardens and green roofs


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tips about roof garden design and construction. Water drainage system.

Published in: Self Improvement, Business

Roof gardens and green roofs

  1. 1. Solutions with geosynthetics Roof gardens Green roofs Page 1 of 10
  2. 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
  3. 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
  4. 4. Roof Garden with conventional drainage system Page 4 of 10
  5. 5. Roof garden drainage with geocomposite drains Page 5 of 10
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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