Why is the wall flashing on my flat roof coming loose?

Loose wall flashing on a flat roof is a common issue that often develops over time due to weather exposure, poor adhesion, or natural building movement. Wall flashing is the material installed where the roof membrane meets a vertical surface, such as a parapet wall. Its main purpose is to prevent water from entering the building at these vulnerable transition points.

When flashing starts to come loose, it can be caused by several factors such as aging materials, temperature changes that cause expansion and contraction, wind uplift, or improper installation. Once the flashing begins to separate from the wall or roof edge, it can create small openings where water can slowly penetrate, potentially leading to leaks, interior staining, or structural damage if not addressed promptly.

At Anchor Point Roofing in Chicago, we specialize in diagnosing and repairing issues like loose or failing wall flashing on flat roofing systems. Our team carefully evaluates the affected area to determine the best long-term repair solution.

In most cases, the repair process involves removing the loose wall flashing and properly cleaning and preparing the parapet wall. We apply a new asphalt primer to ensure proper adhesion for the new system. From there, we install a compatible roofing solution based on the existing roof type, which may include a modified bitumen membrane or a TPO membrane, depending on the roof system and conditions.

Once the new flashing and membrane are properly installed, we finish the area with a protective touch-up using either aluminum coating or Lucas 6000 sealant to enhance waterproofing and durability.

Proper roof repair is essential to prevent further deterioration and maintain a watertight system. At Anchor Point Roofing, we focus on long-lasting repair solutions designed for Chicago’s harsh weather conditions, ensuring your flat roof remains protected year-round.

Location: Chicago, IL