Flashing should be positioned so that the lower edge does not extend beyond the edge of the first course of shingles and the upper edge 17.
12+ Installing Roof Shingles And Flashing Pictures. One piece of flashing is used at every course of roof shingles so that the flashing laps each course below, in the same fashion as the shingles, to make the joint watertight. Flashing is installed to surround roof features, such as vents, chimneys and skylights.
Quick installation tips for how to install gaf shingles on a roof. Last winter we worked on replacing shingles on a roof that sustained massive ice dams damages. If there were no flashing against these walls, water could slowly drip into the crevice.
Replace the shingles to cover the roof flashing.
It is attached to one side of the chimney and one side on the roof. Flashing is installed to surround roof features, such as. We explain where drip edge flashing should be installed, in what position, and we describe the placement of drip edge flashing beneath roofing underlayment or ice and water shields & shingles or other roof coverings. To install asphalt shingles, start by installing underlayment and new flashing on the roof.