Building sheet

Details Building sheet Building sheet

1975-06-16

1976-11-09

Perham, Alfred C.

Static structures (e.g., buildings)

Lapped multiplanar surfacing; e.g., shingle type

Interfitted sections

52521, 52537, 52630, E04D 330

Patent

active

039902064

ABSTRACT:
A building sheet suitable for roofing and siding use that accommodates fastening along ribs or valleys of a side lapped juncture between two sheets. Strengthening ribs formed from bends in the sheet are shaped to promote stacking, to consume little of the sheet width, and to avoid sharp bends that crack protective coatings. An anti-siphon gap is provided between each lapped and lapping rib, extending the full height of the lapped rib adjacent the lapping edge. A drain trough formed at the base of the gap carries away any water that leaks beneath the overlapping sheet. Low ribs delineate channels in which fasteners can be driven to engage an underlapped edge at a side lap juncture between sheets. A top flat surface of high ribs is narrow enough for stiffness to inhibit deformation by fasteners and restricts the fasteners to locations that avoid drain penetration at side laps.

REFERENCES:
patent: 1144725 (1915-06-01), Probert
patent: 1710890 (1929-04-01), Ochiltree
patent: 1912486 (1933-06-01), Krantz
patent: 2073706 (1937-03-01), Overholtz
patent: 2166275 (1939-07-01), Williams
patent: 3667185 (1972-06-01), Maurer

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