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Extend back edge of roof to provide an additional 4.5” overhang.

Install 3” taper cut flute and fill insulation in flutes of existing metal roofing.

Install one layer 1 ½” ISO insulation.

Mechanically fasten the Duro-Last single-ply membrane in accordance with Duro-Last requirements.

Flash all parapet and adjacent building walls in accordance with Duro-Last fastening requirements.

At all perimeter edges bring the membrane over the edge fastening 6” O.C.

Install new Duro-Last metal edging on all perimeter edges.

Flash all curbed units, stacks, chimneys, roof drains, and other penetrations.