FIELD: building industry, particularly roofs with concrete base. SUBSTANCE: covering has waterproof layer connected to base, which consists of several webs hermetically sealed to each other. Strips are applied to web inner surfaces for forming of vapor-removing channels communicating with atmosphere. Each web surface faced base is covered with substance, which may adhere to base. Strips are made by applying of coarse-grained particles, which may adhere to base onto web surface. Longitudinal strips are connected to each other by transversal strips. EFFECT: increased strength of covering pieces connection. 17 cl, 5 dwg
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