Patent ID: 7658052

Claim:
A method for creating a roof system comprising: air sealing a roof deck with a foam material, said foam material being a rise and cure foam; adhering insulation material directly to the foam material via a curing of said foam material, said insulation material being disposed upwardly of said foam material; and adhering an additional foam material to the insulation material via a curing of said additional foam material, said additional foam material being of a different material than said foam material, wherein said additional foam material being a rise and cure foam that rises and cures at a faster rate than said foam material, and said additional foam material being disposed upwardly of the insulation layer; creating a space at perimeters and through roof penetrations with at least one insulation board, said foam material filling said space to create an air seal block of horizontal air flow into the roof system, wherein said additional foam material is disposed in contact with said foam material at said space around said perimeter of the roof system.