Effect of water content in the composition of an extensive green roof on the temperature regime

Abstract

Green roofs are becoming an increasingly fast-growing technology in the construction industry to eliminate the manifestations of massive urban development. Bringing natural vegetation back to cities has beneficial effects not only on natural biodiversity and the inhabitants themselves. It also has a beneficial effect on the surrounding climate and affects the building itself. Due to its evapotranspiration capacity, vegetation mitigates temperature fluctuations and eliminates the urban heat island phenomenon. To function properly, vegetated structures must have an optimum water supply, especially during summer. Several studies have shown that the absence of water, especially for extensive roofs, significantly impacts the proper functioning of such structures. The presence of water in the substrate promotes the formation of evaporation, cools the surrounding air and reduces temperature fluctuations at the waterproofing level. This article highlights the impact of irrigation of extensive vegetated roofs during summer days.