E - Fixed Constructions – 04 – B
Patent
E - Fixed Constructions
04
B
20/20.2
E04B 5/00 (2006.01) E04D 11/02 (2006.01) E04D 13/04 (2006.01) E04D 13/16 (2006.01)
Patent
CA 1234668
BUILT-UP ROOF STRUCTURE AND METHOD OF PREPARING ROOF STRUCTURE ABSTRACT OF THE DISCLOSURE A built-up roof structure includes an insulating layer of expanded, foamed, closed cell, polystyrene insulation panels covering an entire roof. A water impermeable membrane is laid loosely over all of the insulation panels, and a protective layer of extruded, foamed, closed cell, polystyrene protection panels is installed over the membrane to have fissures between each protection panel to allow rain water to run down to the upper face of the membrane. Downwardly open channels are provided in the bottom of each of the protection panels to facilitate runoff. The method of installing such a built-up roof structure includes first laying down the insulating layer made up of all of the insulation panels fit closely together over the entire roof, second loosely laying a water impermeable membrane over the top of the insulation layer, and third, laying down the protective layer made up of the protection panels spaced adjacent each other but far enough apart to allow water to run down between the edges of the protection panels to facilitate drainage.
479764
Fetherstonhaugh & Co.
Minnesota Diversified Products Inc.
LandOfFree
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