Why Is My Parapet Wall Flashing Loose and Could It Be Causing Roof Leaks?

Loose wall flashing is a common roofing issue that occurs when the metal or membrane flashing along a parapet wall becomes detached, lifted, or no longer properly sealed. When this happens, it creates vulnerable openings where water can penetrate behind the wall system, potentially leading to interior leaks, masonry damage, and long-term deterioration of the roofing assembly. In climates like Chicago, where roofs are exposed to harsh freeze-thaw cycles, heavy rain, and snow, maintaining secure wall flashing is critical for preventing water intrusion.

At Anchor Point Roofing, we specialize in professional roof repairs throughout Chicago, including addressing loose or failing wall flashing systems on flat and low-slope roofs. Our repair process is designed to restore a fully watertight condition and extend the life of your roofing system.

To properly repair loose parapet wall flashing, our team will begin by carefully removing and saving the existing metal coping to ensure it can be reused if it is still in good condition. The wall flashing area will then be thoroughly cleaned and prepped to ensure proper adhesion of new materials. Next, we apply a high-quality asphalt primer to promote strong bonding between existing surfaces and the new roofing components.

After preparation, we provide and install a new modified bitumen membrane, which is extended up and over the parapet wall to create a continuous, watertight seal. This ensures improved protection against wind-driven rain and moisture infiltration. Finally, we reinstall the previously saved metal coping, securing it properly and sealing all seams with commercial-grade materials to complete the system.

With Anchor Point Roofing’s expertise in Chicago roof repairs, homeowners can feel confident that loose wall flashing issues are addressed thoroughly and professionally, helping to prevent future leaks and costly damage.

Location: Chicago, IL