Abstract: A finishing shingle includes a sheet having a front surface and a rear surface. The front surface is configured to resemble the shingle installed on a roof with which the finishing shingle will be used. The sheet further includes a central, frangible seam longitudinally extending from one side edge to an opposing side edge that allows a worker to easily separate the sheet into two equal finishing shingles that are substantially half the size of the roof shingle. Nail targets positioned on the top surface provide a template for a worker to nail the finishing shingle to the underlying flashing. Circular sealant patches on the rear surface are aligned with the nail targets to form a watertight seal around the nail and flashing.