Parapet Wall Cap Flashing

A parapet wall cap flashing is the protective covering installed on top of a parapet wall. Its primary function is to prevent rainwater from entering the parapet structure while directing water safely away from the building envelope.

Without a properly designed flashing cap, the top of the parapet becomes vulnerable to water penetration. Rainwater can enter through cracks, joints, porous materials, or poorly sealed transitions and gradually migrate into the roof assembly.