Common Flashing Failures
Flashing fails in several common ways:
How to Diagnose Flashing Problems
Look for these signs of flashing failure:
Flashing Repair Options
How to fix flashing problems:
Minor Sealant Repair
Small cracks or gaps can sometimes be repaired with roofing cement or sealant. This is a temporary fix at best.
Section Replacement
Damaged flashing pieces are replaced with new metal. This requires removing shingles, replacing the flashing, and re-installing shingles.
Full Replacement
When flashing is extensively corroded or damaged, full replacement is the most cost-effective long-term solution.
Flashing Repair Costs
Typical costs for flashing repairs:
Preventing Flashing Problems
Maintenance helps prevent flashing failures:
Frequently Asked Questions
How do I know if my flashing needs repair?
Watch for water stains near chimneys, vents, or walls, visible rust or corrosion, loose or missing flashing pieces, and damaged sealant. Annual roof inspections help catch flashing problems early.
How much does flashing repair cost?
Minor repairs: $200-$600. Section replacement: $400-$1,200. Full replacement: $800-$2,500. Costs vary by the extent of damage and materials used.
Can I repair flashing myself?
Minor sealant repairs can sometimes be DIY, but flashing work requires climbing on the roof and working with metal. Most flashing repairs should be done by a professional to ensure proper installation and watertight seals.
How long does flashing last?
Flashing lasts 20-30 years with proper installation. Copper flashing can last 50+ years. Replace flashing when it shows rust, cracks, holes, or when sealant has failed.