Roof deck covering system securement mechanism

In a roof deck covering system comprising a waterproofing membrane positioned on the surface of said roof deck and an apertured overlay positioned on top of said waterproofing membrane and essentially coextensive therewith,

• a securement assembly for said roof deck covering for securely retaining said waterproofing membrane over said roof deck comprising,
• a base member capable of being firmly attached to said roof deck and including a curved linear extending portion designed to extend along said roof deck provided with two oppositely positioned edges thereon, said curved linear extending portion of said base member provided with means adapting said base member to be tangentially secured to the surface of said roof deck,
• a first element at one edge of said curved linear extending portion extending in a direction toward said other edge of said curved linear extending portion and a second element at the other edge of said curved linear extending portion extending in a direction toward said one edge of said curved linear extending portion and having a length much greater than the distance between said one edge and said other edge of said curved linear extending portion, and
• a first resilient means having a thickness approximately that of said waterproofing membrane and of a shape substantially conforming to that portion of said base member between said one edge and said other edge of said curved linear extending portion and having a length much greater than the distance between said one edge and said other edge of said curved linear extending portion and adapted to press said waterproofing membrane securely against said base member between said one edge and said other edge of said curved linear extending portion.