Roof with insulated purlin

Details Roof with insulated purlin Roof with insulated purlin

1976-01-05

1978-02-28

Perham, Alfred C.

Static structures (e.g., buildings)

Underlying compressible layer or pad

52 90, 52407, 52478, 52488, E04B 228, E04B 260

Patent

active

040758060

ABSTRACT:
A roof structure is formed with a plurality of substantially parallel purlins mounted on rafters, with each purlin including a central web and a laterally extending upper flange. The upper flange of each purlin defines a plurality of equally spaced openings therethrough, and layers of insulation material are applied to the upper and lower surfaces of the upper flange. Sheets of hard roofing material are mounted on the purlins and fasteners are inserted through the sheets of roofing material and extend down through the openings in the upper flanges of the purlins and through the layers of insulation material so that the sheets of roofing material and fasteners are isolated by the insulation material from the purlins. Additional insulation material is located between adjacent ones of the purlins below the sheets of hard roofing material.

REFERENCES:
patent: 107290 (1870-09-01), Reynolds
patent: 1156335 (1915-10-01), Waugh
patent: 2287400 (1942-06-01), Wells, Jr.
patent: 2602408 (1952-07-01), Smith-Johannsen
patent: 2945653 (1960-07-01), Atkin
patent: 3164227 (1965-01-01), Davis, Jr. et al.
patent: 3513614 (1970-05-01), Studzinski

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