Sashco Cobra Through the Roof Clear Synthetic Rubber Roof Repair Caulk 10.5 oz

You need a flat caulk bead, you have a round nozzle. How does that make sense? That's what we thought. Introducing the COBRA Lap Joint Nozzle. It extrudes a wide bead to easily cover all kinds of lap joints, like roof flashing and window fins as well as sandwich joints like thresholds.