Where Coping Caps Are Used
Coping caps are typically installed on commercial low-slope roofsRoof Types - Low-slope roofs (flat roofs) are a type of roof system with less than a 3:12 pitch, most commonly found on commercial and industrial buildings. More along the top of parapet wallsComponent - A parapet wall is the portion of an exterior wall that extends above the roofline at the perimeter of some buildings. More at the roof edge, where the roof meets a vertical wall. At this point in the roof systemRoof Types - A roof system (roof assembly) is the entire series of roofing layers and components above the roof deck that work together to weatherproof the building. More, the membraneMaterial - A single-ply membrane is a roof covering that uses one continuous layer of material to waterproof low-slope roofs. More can either be terminated and sealed at the wall or carried up and protected with a coping cap.
A coping cap covers the membrane edge from above and overlaps both sides of the wall so water sheds away from it.
They are most often fabricated from metal and installed in sections with joints that allow for thermal movementPerformance - Thermal expansion is the movement of roofing materials as they expand when heated and contract when cooled. More. If these joints open over time, water can enter at the top of the wall and lead to leaks that appear along the roof edge or inside the building.