From the wetland to the wetland roof

The popularity of green roofs is increasing every year, not only due to their aesthetic benefits but also thanks to the functional advantages they bring to the building and its surroundings. In the design, mostly extensive and intensive green roofs are usually considered. However, in recent years a wetland roof has also started to be applied in some places. Such a roof could present a better variant of classic green roofs. The wetland roof is a multifunctional construction that retains rainwater, creates a cooling effect thanks to evapotranspiration and can also be used as a root water cleaner. The article summarizes information about the wetland roof – its composition, maintenance, advantages, disadvantages and occurrence in the world. Concurrently, it provides an overview of existing research on the roof marsh and its expanding use in Slovakia.