E - Fixed Constructions – 04 – D
Patent
E - Fixed Constructions
04
D
20/20.2
E04D 3/18 (2006.01) E04B 1/76 (2006.01) E04D 1/10 (2006.01) E04D 3/35 (2006.01) E04D 7/00 (2006.01) E04D 11/00 (2006.01) E04D 11/02 (2006.01) E04D 13/04 (2006.01)
Patent
CA 1145916
Abstract of the Disclosure An improved roof structure with a water -impermeable membrane and a closed cell thermal insulating material disposed over the membrane with defined fissures between adjacent members and a water permeable layer such as a scrim affixed over the insulating material to tie the individual members together to permit floating of the insulation in the event of ponding. Preferably, a protective layer of gravel is then applied over the water permeable layer 27/887-F
351799
Mcmillan William J.
Severson Jerry L.
Smart & Biggar
The Dow Chemical Company
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