Ornamental and esthetically pleasing outer covering for pitched roof of building has layer made of material permeable to water, and has inner impermeable layer invisible from outside

摘要

The inner impermeable roof layer (3) is supported on triangulated girders (2). It supports girders (1) which may be of triangular cross-section, and which hold an ornamental outer layer (4) consisting of a grating made of metal, wood or plastics or a net made of metal. The outer layer has a purely esthetic and decorative function, and the rainwater runs down the outside surface of the inner layer.