worlds first Polder roof engineer at MetroPolder Company - Rotterdam, South Holland, Netherlands
MetroPolder company* creates multifunctional water storage on flat roofs in cities by smart watermanagement. The water storage is used to prevent flooding by heavy rainfall and used for irrigation and grey water systems. Rainfall is changed from waste into a resource and unused roofs are changed into green roofs, roof gardens or solar parks. MetroPolder advises, designs and establishes water storage on flat roofs