Smart roofs are a special type of extensive green roofs that fulfil different services to protect ecosystems in cities: (Capillar) smart roofs represent an extension of conventional green roofs because the system is equipped with a drainage system under the vegetation layer. The drainage layer retains storm water. Through capillary fibre cylinders water is naturally returned to the vegetation layer during dry periods. Capillar smart roofs represent a cyclic water management where an additional plant irrigation is not needed (100% of the storm water can be reused for irrigation). Furthermore technical devices (pumps, tanks, valves) are redundant.

Basic information

Retrofitting + Creation
Measures / Practices


Evapotranspiration 1 1
Shading none 2
Reflection (Albedo) none
Water Conveyance 2
Water Infiltration none
Water Retention 2
Water Storage 2
Water Reuse 1
Water Filtering 1
Water Bio-remediation none
Deposition 1
Bio-filtration none
Habitat Provision none
Connectivity none
Beauty / Appearance 1
Usability / Functionality none
Social Interaction none
Role of Nature / Mode of Action: 
As illustrated in Fehler! Verweisquelle konnte nicht gefunden werden. the model for a green roof is natural soil with its vegetation cover. Through the establishment of green roofs on buildings, different services of natural vegetation layers are replicated.
Conditions for Implementation: 
- Waterproofing surface/roof - sufficient roof load-bearing capacity
Benefits & Limitations: 
Benefits: - Reduced flood risk - Water scarcity - Loss of biodiversity

This project has received funding from the European Union’s Horizon 2020 research and innovation programme under Grant Agreement No. 730052 Topic: SCC-2-2016-2017: Smart Cities and Communities Nature based solutions