A presentment of the merits of metal shingles and metal tile for the roof ...
A 1921 trade catalogue issued by the National Sheet Metal Roofing Company to promote its metal shingles and metal tile for roofs, aimed at builders and roofing buyers. The pictures are grey tonal renderings of stamped metal shingle and tile sections, showing repeating panels with raised arrow-like ridges, corner pieces and ridge profiles, useful to a designer studying repeated geometric roof patterning and early industrial sheet-metal forms.
