Abstract: An improved membrane plate for attaching a membrane to a roof is disclosed. The improved membrane plate includes a plate body portion having a bottom surface for disposing the bottom surface against the membrane and an opening to permit a fastening device to pass therethrough for securing the membrane plate and the membrane to the roof. A plurality of spaced apart lances joined to said plate body portion by a hinged lance edge and extending downwardly from the plate body portion wherein the spaced apart lances are disposed upon the plate body portion to define an oval shape having a longitudinal oval axis. The hinged edges are aligned parallel to the longitudinal oval axis. The membrane plate is subjected to a shear force when attached to the roof and is disposed such that the longitudinal oval axis of the membrane plate is perpendicular to the shear force.

Abstract: A membrane plate for attaching a lower membrane and an adjacent upper membrane overlapping the lower membrane to a roof is provided where the membrane plate includes a plate body having a top surface and a bottom surface, the top surface adapted to seat against the upper membrane, the bottom surface adapted to seat against the lower membrane, the top surface and the bottom surface separated by at least one wall generally perpendicular to the top surface and the bottom surface, the plate body having a generally centrally located aperture to permit a fastening device to pass through for securing the membrane plate and the membrane to the roof The membrane plate further includes holes in the plate body at least partially located in the generally perpendicular wall to permit air to flow between the top surface to bottom surface of the plate, whereby the holes permits a bubble of air created during the securing of the upper membrane to the lower membranes to the roof by an adhesive, to dissipate through the membra