10

Click here to load reader

Roof gardens and green roofs

Embed Size (px)

Citation preview

Page 1: Roof gardens and green roofs

Page 1 of 10www.geosyntheticsworld.com

Solutions with geosynthetics

Roof gardens

Green roofs

Page 2: Roof gardens and green roofs

Page 2 of 10www.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 3: Roof gardens and green roofs

Page 3 of 10www.geosyntheticsworld.com

Roof gardens and green roofs

Roof gardens and green roofsAdvantages 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 4: Roof gardens and green roofs

Page 4 of 10www.geosyntheticsworld.com

Roof Garden with conventional drainage system

Page 5: Roof gardens and green roofs

Page 5 of 10www.geosyntheticsworld.com

Roof garden drainage with geocomposite drains

Page 6: Roof gardens and green roofs

Page 6 of 10www.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 7: Roof gardens and green roofs

Page 7 of 10www.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 8: Roof gardens and green roofs

Page 8 of 10www.geosyntheticsworld.com

Enkadrain for green roofs

Drainage in accorance with DIN 4095

Plant Material

Growth Medium

Pre-Vegetated Mat

Water Retention Layer

Drain & Filter Layer

Root Barrier

Roof Membrane

Substrate

Page 9: Roof gardens and green roofs

Page 9 of 10www.geosyntheticsworld.com

Roof gardens and green roofs

1

2

3456

7

Standard solution for a new roof (insulation under the waterproofing):

1. vegetation2. substrate3. Enkadrain (composite drainage product4. waterproof liner (root-resistant )5. thermal insulation6. vapor barrier7. roof

Another possible detail

Page 10: Roof gardens and green roofs

Page 10 of 10www.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.