| 摘要 |
The invention comprises a panel (100, 200, 401) suitable for weatherproofing purposes. Panels may be affixed to a roof or onto a wall in juxtaposition or, more preferably overlapping like tiles, so that any water is diverted away from the weatherproofed area when it flows downward. In appearance, each panel may simulate a matrix of tiles. These panels have been optimised in terms of the material content required to support a given load by using increased material thickness (202, 503) beneath ridges (104). One manufacture technique is attachment of supplementary material, for example steel ribs (202) attached to an aluminum sheet, then pressing the composite to create longitudinal and perhaps transverse ridges. Thus the light-weight panels can better support the weight of a person or of solid precipitation. A ligther roof need less support framework. Attachment by fasteners exposed only to shear forces is an advantage over downwards nailing of metal roofs.
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