Flashing Replacement

Flashing is the metal that seals the vulnerable points of a roof — chimneys, valleys, walls, vent pipes, and roof edges — against wind-driven rain and melting snow. In Chicago, freeze-thaw cycles and shifting building materials can loosen, corrode, or crack flashing over time, letting water find its way into the structure below. When flashing fails, homeowners and building owners typically notice water stains, damp insulation, or drips near chimneys and parapet walls, which is when replacement becomes necessary. Francisco Perez, owner of Perez Roofing & Masonry, oversees roof repair and replacement work across residential and commercial properties in Chicago, including flashing repair and replacement at chimneys, valleys, and roof edges.

How Flashing Problems Are Found

Infrared Roof Moisture Scanning — locates hidden moisture behind flashing before it spreads into decking or interior finishes.
Moisture Meters — pinpoint the exact source of a leak so replacement work targets the right area.
Drone Roof Inspections — provide a full view of flashing condition around chimneys, valleys, and edges without unnecessary foot traffic on the roof.

How Replacement Is Done

Sheet Metal Flashing Fabrication — custom-formed flashing is shaped to fit roof edges, valleys, chimneys, and parapet walls precisely.
Fall Protection & Safety Systems — certified harness systems keep crews secure while working at edges and chimneys during flashing replacement.

Flashing replacement is often paired with related work such as chimney repair, parapet wall repair, or tuckpointing when surrounding masonry has also been affected by water intrusion.