The Ecological Benefits of a Green Roof
Provides Rainwater Management
Depending on the green roof design, the immediate water run-off can be reduced by 50–90 %, greatly reducing drainage flow rates. This enables the rainwater management system to be reduced in capacity, thereby greatly reducing construction costs.
Improves the Microclimate
Green roofs cool and humidify the surrounding air. Thus they create a beneficial microclimate within their immediate area and contribute to improving the microclimate in urban centres. Coordinated urban green roof development can significantly reduce the so-called "Heat Island" effect.
Binds Dust and Toxic Particles
Green roof vegetation helps to filter out dust and smog particles. Nitrates and other harmful materials are absorbed by the plants out of the air and rainfall and bound within the substrate.
Improves Noise Protection
Planted areas are natural sound insulators and absorb more sound than hard surfaces. Green roofs reduce reflective sound by up to 3 dB and improve sound insulation by up to 8 dB. This is very effective for buildings near airports, noisy nightclubs and factories.
Provides Natural Biodiverse Habitats
Landscaped roofs compensate for green spaces, which are lost to building development. They provide natural habitats for wildlife and bring nature back into the cities.
Green roofs make extensive use of recycled and recyclable products, saving further valuable resources. Rubber, polyethylene and expanded polystyrene rigid foam are used in the production of drainage elements. The mono clay material Zincolit and humus are the basis for the production of ZinCo rooftop garden system soils. The most important criterion is the quality of the product, which is tested by recognised institutes and research bodies.