Roof Flashing Repair

Roof flashing repair is one of the most important services Pierce Roofing provides because flashing failure is the leading cause of roof leaks. Flashing consists of thin strips of metal — typically aluminum, galvanized steel, or copper — installed at every point where your roof surface meets another structure: chimneys, vent pipes, skylights, dormers, walls, and valleys. These transition points are inherently vulnerable to water penetration, and properly installed, well-maintained flashing is all that stands between your home’s interior and the elements. In Green Bay and across Northeast Wisconsin, our climate puts extraordinary stress on roof flashing. Temperature swings from -20°F in January to 90°F in July cause metal to expand and contract repeatedly, breaking sealant bonds and working fasteners loose over time. Pierce Roofing has repaired and replaced flashing on thousands of roofs across Brown, Outagamie, Winnebago, Kewaunee, Oconto, and Manitowoc counties over our 30+ year history. Call (920) 609-8304 or schedule a free inspection if you suspect flashing problems.

Roof flashing is the waterproofing system that seals every joint, intersection, and penetration on your roof. While shingles protect the broad surface area, flashing protects the edges and transitions where water naturally concentrates. Without functioning flashing, water would flow behind your shingles at every chimney, vent pipe, skylight, and wall junction. A typical residential roof has a dozen or more flashing locations, and a failure at any single one of them can cause a leak. That is why Pierce Roofing inspects every flashing point during our free roof inspections — catching deterioration before it becomes an emergency leak.

Pierce Roofing repairs and replaces every type of residential and commercial roof flashing. Each type serves a specific purpose and requires specialized installation techniques.

Catching roof flashing problems early prevents expensive interior water damage. Watch for these warning signs:

• Rust or corrosion — Visible rust on metal flashing around chimneys, vents, or walls indicates the protective coating has failed and the metal is deteriorating
• Gaps or separation — Flashing that has pulled away from a chimney, wall, or skylight frame creates a direct path for water entry
• Cracked or missing sealant — The caulk or sealant that bonds flashing to adjacent surfaces breaks down over time. Visible cracks, gaps, or missing sealant sections are leak risks
• Lifted edges — Wind can catch and lift flashing edges, breaking the seal and allowing water beneath the shingle layer
• Water stains near roof penetrations — Brown stains on ceilings or walls near chimneys, vents, or skylights strongly suggest flashing failure above
• Cracked pipe boots — Visible cracks in the rubber gasket around plumbing vent pipes are a sure sign of imminent or active leaking

If you notice any of these signs, call Pierce Roofing at (920) 609-8304 for a free inspection.

Some homeowners consider repairing roof flashing themselves. While re-caulking a small gap may seem simple, improper flashing repair often makes the problem worse. Here is why professional roof flashing repair is worth the investment:

• Safety — Working on a roof is inherently dangerous. Falls from ladders and roofs are a leading cause of home injury. Pierce Roofing’s crews are trained, insured, and equipped for safe roof work
• Correct diagnosis — The drip you see inside may not align with the actual leak source. Water travels along rafters and sheathing before appearing as an interior stain, sometimes feet from the actual entry point. A professional roofer traces the leak to its true source
• Proper materials — Big-box store sealants and flashing kits often lack the durability needed for Wisconsin’s climate. Pierce Roofing uses commercial-grade sealants and metals rated for extreme freeze-thaw cycling
• Warranty protection — DIY repairs can void your existing roof warranty. Pierce Roofing’s professional repairs are backed by our 10-year workmanship warranty

The cost of roof flashing repair varies based on the type of flashing, the extent of damage, and accessibility. Simple pipe boot replacements are among the most affordable roof repairs. Chimney flashing replacement is more labor-intensive and costs more due to the multi-step process of removing old flashing, grinding mortar joints, and installing new step and counter-flashing. Valley flashing repair falls somewhere in between. Pierce Roofing provides clear, written estimates before any work begins so you know the exact cost. In many cases, flashing repair is far less expensive than the water damage it prevents. Call (920) 609-8304 for a free estimate.