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Flashing Repair
Chimney Flashing Repair & Replacement – North Shore Massachusetts
Chimney flashing — the metal seal between your chimney and your roof — is the most common source of roof leaks in New England homes. When flashing fails, water runs directly into your attic and walls, causing mold, wood rot, and ceiling damage. Coastal Chimney Sweeps repairs and replaces chimney flashing throughout the North Shore of Massachusetts.
Our technicians are experienced working on all roof types, including asphalt shingle, slate, tile, and metal roofing common to North Shore homes.
Why Flashing Fails
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Improper original installation (caulk-only instead of step flashing)
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Thermal expansion and contraction over years of temperature cycling
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Mortar-based flashing cracking and pulling away
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Rusted or corroded metal from coastal salt air exposure
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Storm damage and wind-driven rain
Signs of Flashing Failure
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Water stains on ceiling near the fireplace
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Damp or wet attic around the chimney penetration
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Visible rust streaks on chimney masonry
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Peeling paint or bubbling wallboard near fireplace
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Musty odor from fireplace after rain
Our Flashing Repair Process
- Inspection to determine whether repair or full replacement is needed
- Removal of old caulk and failed flashing sections
- Installation of step flashing and counter flashing
- Application of high-temperature, UV-resistant sealant
- Leak-test and final inspection
Frequently Asked Questions
Can you just caulk the flashing to fix a leak?
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Do you work on all roof types?
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Does my homeowner's insurance cover flashing repair?
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How long does a flashing repair take?
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Read practical safety and maintenance articles on our Guides page.