Abstract: A roof deck covering system with a means for securing a roof membrane over a roof deck, either at the periphery or in the interior of a roof, and holding it in place for an indefinite period of time and not affecting the watertight integrity of the membrane.

Abstract: A perimeter securement assembly for a roof deck covered with a waterproofing membrane and an apertured overlay thereover comprises a coved base member adapted to be positioned along the periphery of the roof with the waterproofing membrane extending thereof and secured therein by means of a resilient member which hold the membrane in the coved portion. In one version the apertured overlay is provided with openings along its selvage edge, said openings engaging the one end of an S-shaped hook, the other end of said hook engaging the coved base member and being held in place by the resilient means. In another version a continuous flat hook-shaped member extends over the membrane and the coved base member, is held in place by resilient means, and is attached to the selvage edge of the apertured overlay by means of heat welding.

Abstract: A roof waterproofing membrane positioned on a roof deck and secured at the periphery thereof and covered by an apertured overlay having openings therein which is also secured at the periphery of the roof deck surface.

Abstract: A perimeter securement assembly for a roof deck covering involving a one-piece fabricated coved securement base with resilient compression retainers for positively securing said waterproofing membrane roof deck covering therein.