Live Demo: Installing a Perfect Parapet Wall Flashing

This video is for: Homeowners or building owners with flat/low-slope roofs. A huge number of flat roof leaks don't happen in the middle of the roof—they happen at the parapet wall. This is the most complex part of a roofing system, and today we're getting nerdy to show you how every single piece works. Using diagrams and physical props, Jim breaks down the entire anatomy of a leak-proof modified bitumen parapet wall, layer by layer. Learn how all these components create a watertight system: Poly-ISO Insulation: The base layer for thermal resistance. Bitumen Base Sheet: The first self-adhered layer of protection. The Cant Strip: A critical piece that eases the sharp 90-degree angle to prevent cracks. The Cap Sheet: The main heat-welded membrane in the field. Wall Flashing: The second layer, which must run 12-18 inches up the wall to handle heavy Chicago snow. Counter-Flashing: The metal piece that mechanically fastens the membrane to the wall. Metal Coping: The top cap, which must be angled into the roof to prevent staining the building exterior. Stay tuned to the end for a live, on-site demonstration from our foreman, Jesus, showing the master technique for installing perfect wall flashing. Chapters: 0:00 - The Parapet Wall Detail 1:00 - Layer 1: Poly-ISO Insulation 1:25 - Layer 2: Bitumen Base Sheet 1:45 - The Critical Cant Strip 2:30 - Layer 3: The Cap Sheet 3:00 - Layer 4: The Wall Flashing 4:00 - Layer 5: Counter-Flashing 4:55 - The Metal Coping (Angled In) 5:40 - Live Demo: Installing Wall Flashing 11:15 - TPO vs. Modified Bitumen Details You need a roofer who gets these details right. For an expert installation, call Anchor Point Roofing. ➡️ Website: https://www.anchorpointroofing.com/ ➡️ Phone: (312) 724-8200 #flatroof #parapetwall #roofing #construction #modifiedbitumen #chicago #roofer #homeimprovement