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.
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