Green roofs
Green roofs
Green roofs are a nature-based solution (NBS) to enhance urban vegetation and bring numerous benefits to the city.
Type of service:
Maintenance of green spaces
Environmental benefits
Reduction of the urban heat island effect
They are one of the most effective ways to reduce the ambient temperature in urban areas. In summer, the temperature in cities is higher due to heat absorption by buildings and streets.
Stormwater retention
They harness stormwater, lessening the strain on sewerage systems.
Stormwater purification
They prevent pollutants and toxins in stormwater from reaching streams and drainage channels due to the natural filtration of these components.
CO2 reduction
They help to reduce the amount of CO in the atmosphere which is the cause of global warming.
Cleaner air
Green roof vegetation captures harmful airborne particles, heavy metals and volatile organic compounds.
Natural habitat
They provide habitat for many species displaced by the alteration of urban infrastructure, thus helping to re-establish biological cycles.
Economic and social benefits
Lifespan of roofs
They increase the durability of buildings’ waterproofing systems. The underlying materials are protected from mechanical damage, ultraviolet radiation and extreme temperatures, thereby cutting repair and maintenance costs.
Energy efficiency
They help to reduce the energy used for heating and cooling.
Acoustic comfort
They provide good sound insulation, help to reduce urban noise stress and create more pleasant environments.
Landscape enhancement
The natural features of green roofs soften the appearance of concrete buildings in urban areas and bring significant changes to contemporary architecture.
Useful green space
They help to increase green space in urban areas, restoring their connection with nature and crafting communal areas in the city where leisure and social relations can be fostered.
Urban agriculture
Green roofs can also generate opportunities for urban agriculture.
DETAILS
Technical data
LAYER
Vegetation
Substrate. Growth medium
Filter layer
Drainage layer
Protective layer
Waterproofing/ Anti-rooting
ROLE
Makes the environmental, economic and social benefits of the city possible.
Physical support for plant life, provision of water and nutrients and oxygenation.
Allows water through but not solid particles.
Water storage, drainage of excess water and oxygenation.
Mechanical protection of underlying layers and water retention.
Mechanical protection of underlying layers and waterproofing of the building.
MATERIAL
Extensive: Succulents and/or herbaceous. Intensive: Any vegetation.
Technical substrate for green roofs. Mineral wool (fertigation). Suitable natural soil.
Polyester, polypropylene geotextile.
Honeycomb polyethylene, polypropylene, polystyrene, etc. layer.
Porous stone materials.
PVC, asphalt or bituminous membranes, polyethylene, etc.
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