Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Douglas Bruce0
Greg Sharrun0
Richard Peng0
Date of Patent
February 8, 2011
0Patent Application Number
117088980
Date Filed
February 21, 2007
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A multi-layer roofing membrane is provided including a top sheet including a co-extruded cap and inner layer and a bottom sheet. The use of a co-extrusion die allows for multi-layer sheets that reduce the need for expensive fillers in all but a cap layer of the membrane. A scrim reinforcement layer is optionally embedded in the membrane. When installed on a roof substrate, the membrane can be sealed by heat welding the seams of the membrane sheets or by other means.
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