Roof greening following renovation of the roof surfaces: main flat roof, plus three additional flat roofs extending beyond the main roof, and a shed roof with a slope of less than 15° above the gymnasium, featuring a roof waterproofing membrane made of FPO/TPO based on polyethylene (PE), 1.8 mm thick, self-adhesive (Schedetal). Execution: cleaning of the roof surface, installation of a protective layer, installation of drainage elements, filter geotextile, inspection chamber, gravel in the area of the skylights, ventilation units, and outlets for two ventilation systems at the roof edge. Roof greening as extensive greenery with herbaceous plants. Roof greening covering approximately 541 m², with a total roof area of approximately 603 m².

Stadt Iserlohn