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Roof-cladding with tiles, slate, or metal sheet. Johnson Construction replaces, repairs, and installs the roofs of buildings, using a variety of materials, including shingles, bitumen, and metal. The material is cemented to the foundation and the layers are glued to one another by bitumen-based and tar-based roofing mastics, depending on the type of impregnation of the roll material used. Roofing work can be physically demanding because it involves heavy lifting, as well as climbing, bending, and kneeling, often in extreme weather conditions.
