Photo de stock - Mülheim an der Ruhr, North Rhine-Westphalia, Germany, flat roof is prepared for green roof. Here, the substrate layer is applied to the separating fleece to the drainage layer below.

Photo de stock: Mülheim an der Ruhr, North Rhine-Westphalia, Germany, flat roof is prepared for green roof. Here, the substrate layer is applied to the separating fleece to the.

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