It is crucial to understand that excessive urbanisation has destroyed the natural cycle of water (precipitation – infiltration − evaporation) as there are simply too much paved surfaces in dense urban areas which prevent proper infiltration of rain water into the ground. With the Urbanscape® Detention Green Roof the water cycle can be restored.
The Urbanscape Detention Green Roof System is pioneering detention in green roofs. It delays runoff and reduces peak runoff intensity in order to comply with stormwater detention requirements which reduces the burden on sewer systems and consequently causes cost reduction due to no or low need for rain harvesting cisterns and similar equipment, usually used for storm water management. The detention feature of the Urbanscape Detention Green Roof helps to limit accidents caused by heavy rainfalls.
The Urbanscape Detention Green Roof retains more water than any other vertical assembly. It provides fast and long-term stable water re-absorption and retention performance and helps to rebuild a healthy water-cycle.
Green roofs should not be one-size-fits-all. The Urbanscape Detention Green Roof is designed for and adjusted to different environments and climates.
Through natural biofiltration, green roofs prevent contaminants and toxins from reaching streams and waterways. According to Kohler & Schmidt research (1990) 95 % of lead, copper and cadmium sulphides, and 19 % of zinc coming from the rainwater remain in the substrate which helps to improve the local water quality.
HIGH THERMAL PERFORMANCE
The Urbanscape® Detention Green Roof System ensures a long-lasting cooling effect due to the high water-storage capacity. Compared to the non-vegetated roofs, roofs with the Urbanscape® Green Roof System reduce heat gain due to the thermal mass, extra insulation, and evapotranspiration associated with vegetative roofing systems.
The Urbanscape® Detention Green Roof system can be installed also on lightweight constructions where the installation of traditional systems is not possible. Further on, the Urbanscape® Detention Green Roof System can also be much thinner (decreasing the weight even more) than traditional green roof system. A lesser thickness of the system will not compromise the performance, therefore the same water absorption and detention are achieved with a lesser thickness of full assembly .
The Urbanscape® Detention Green Roof System is provided with complete, easy to install layers delivered directly to the customer.