Patent ID: 11913235
Assignee: nan
Field: Civil engineering (Other fields)
Classification: CPC E  F | IPC E  F

Claim 10:
11. A system of underlayment for a roof structure, said system comprising:
a first underlayment material disposed in covering relation to a roof deck of the roof structure,
at least two mechanical fasteners disposed in interconnecting relation to said first underlayment material, a second underlayment material, and the roof structure,
said at least two mechanical fasteners each including an independent and separable outer plate and under plate, and a connector,
said outer plate including magnetically attractive properties,
said under plate disposed on an exposed face of said first underlayment material,
said second underlayment material disposed in covering relation to said exposed face of said first underlayment material and said under plate,
said under plate comprising a flexible, at least partially non-metallic, magnetic inclusive material,
said outer plate disposed on an exposed face of said second underlayment material and removably disposed in an aligned, overlying relation to said under plate through said second underlayment material as a result of said magnetic properties, so as to facilitate aligned positioning of said under plate on said first underlayment material and said outer plate on second underlayment material during introduction of said connector,
said connector penetrating through said outer plate, said second underlayment material, said under plate, and said first underlayment material into secured relation to the roof structure, and
a retainer clip at least partially formed of a metallic material, said retainer clip magnetically connected concurrently to two of said at least two mechanical fasteners, wherein said at least two mechanical fasteners disposed in substantially adjacent, spaced relation to one another.