Roof flashing might not be the most noticeable part of your home, but it plays a critical role in keeping water out. Flashing is the thin material, usually metal, that’s installed around roof features like chimneys, vents, skylights, and valleys to direct water away from seams and prevent leaks. When flashing fails, your roof becomes vulnerable to water infiltration, which can lead to extensive damage. Marshalls Roofing & Contracting will cover the most common signs of flashing problems, what causes them, and
why it’s important to address issues early.
Water Leaks Inside the Home
One of the most obvious and urgent signs of flashing failure is water leaking into your home. If you notice:
• Water stains on ceilings or walls.
• Dripping during or after a rainstorm.
• Damp insulation in the attic.
It could be due to compromised flashing allowing water to seep in and around vulnerable areas like chimneys or roof valleys.
Visible Rust or Corrosion
Flashing is typically made from galvanized steel, aluminum, or copper. Over time, exposure to moisture and weather can cause rust or corrosion, especially if the flashing is made of older or lower-quality materials. If you see rust forming on the flashing, it’s likely weakening the material and opening pathways for water to enter.
Loose or Missing Flashing
High winds, heavy rain, or poor installation can cause flashing to become loose, bent, or even fall off entirely. You may notice:
• Sections of flashing lifting up or flapping in the wind.
• Gaps or cracks between the flashing and the roof or wall.
• Missing sections around vents, chimneys, or skylights.
Loose or missing flashing leaves your roof highly vulnerable to leaks and water damage.
Mold or Mildew Growth
Moisture that leaks in through damaged flashing can create a perfect environment for mold and mildew growth, especially in the attic or upper walls. If you notice a musty odor, mold spots on insulation or drywall or discolored patches near ceiling corners it could be a sign that flashing has failed and is letting water into your home.
Damaged Shingles Near Roof Penetrations
Flashing is often installed beneath shingles near roof features like chimneys or vents. If these shingles are curling or buckling, discolored or water-stained or, missing entirely. This may indicate that the flashing beneath them is not doing its job and water is seeping underneath.
Ice Dams in Winter
If you live in a colder climate and deal with ice dams, that’s another potential sign of poor flashing or ventilation. When heat escapes through the roof and melts snow, the water can refreeze at the eaves. Damaged flashing makes it even easier for this melted water to find a way inside your home.
Aging Roof or Poor Past Roofing Repairs
Even if you haven’t spotted active leaks, a roof over 15 to 20 years old may have worn or deteriorating flashing. Also, if you’ve had roof repairs or replacements done before, improper flashing installation is a common oversight among less experienced contractors.
Roof Installation, Replacement, Repair & More in Columbia, Jessup, Elkridge, Ellicott City, Clarksville, Fulton, Laurel MD and Howard, Carroll, Frederick, Baltimore, Anne Arundel and Montgomery Counties in Maryland
Flashing may be a small part of your roofing system, but it’s a mighty line of defense against leaks and moisture damage. Keep an eye out for the signs above, and don’t hesitate to bring in a professional if something seems off. Need help with a flashing inspection or roof repair? Contact Marshalls Roofing & Contracting for roofing repairs today.
