The Garrdal 2 Piece Retrofit Pipe Flashing is a rooftop flashing that is made to go around roof obstacles like wire masts, HVAC stacks or other penetrations that are circular up to 5-3/8 inches in size. This flashing is split into two separate pieces but is designed to look like one when applied around roof obstacles. Garrdal has tear-away ribs that allow adjustments to the flashing from 1-1/2 inch to 5-3/8 inches in diameter. Garrdal is also UV resistant. Before applying Garrdal pipe flashing, make sure ice and water shield is applied to your roof deck and that shingles are installed to the pipe that needs to be flashed. You should also apply sealant between the upper and lower halves of the flashing to prevent issues from bugs and driving rain.