Analysis of the Temperature Course of a Wetland Roof Compared to a Green Roof in Slovakia - First Results

Urban Heat Islands (UHI) is a consequence of urbanization and increased heat absorption, leading to local temperature rises in urban areas. This phenomenon is exacerbated by climate change, which brings frequent weather fluctuations – intense heat waves and heavy precipitation within short periods. Green roofs represent one solution for mitigating the UHI effect, thanks to their water retention capacity and gradual evaporation, which creates a cooling effect on the building and its surroundings. Recently, a new variant of the green roof has appeared, the wetland roof. Such roof is expected to be equally advantageous as green roofs and, in some cases, even more so due to the permanent presence of water and the use of wetland plants. In May 2022, an experimental wetland roof was constructed next to the existing experimental green roof, to verify the interaction of such roof type throughout the year. The article focuses on the temperature fluctuation in selected layers of the green and wetland roof. The first results from the roof monitoring are presented. Comparing these elements contributes to a better understanding of the impact on the building and the composition of the roof.