Lead-coated copper, copper, and heavy aluminum flashing. CrownCoat and ChimneySaver products for crown repair. Type N or Type S mortar for tuckpointing. Stainless steel chimney caps. Heat-resistant high-temp caulk.
How much does chimney flashing repair cost in NYC?
Simple flashing repair (re-caulk, replace step flashing): $350–$800. Full flashing replacement with new step + counter-flashing: $850–$2,000. Crown repair or rebuild: $400–$1,800. Tuckpointing: $20–$45 per linear foot. We give you exact pricing after the inspection.
Why does my chimney always leak when it rains hard?
In 95% of cases, it's failed flashing. The other 5% are: cracked crown letting water down the flue, missing chimney cap, mortar joints letting water wick through brick, or a structural crack in the chimney itself. We diagnose every failure point.
Can I just caulk around the chimney to stop the leak?
Short term, sometimes. Long term, never. Caulk and tar are emergency band-aids — they last 1–3 years and then leak again, often worse than before because they trap water against the chimney. Real flashing is the only permanent fix.
Do I need a chimney cap?
Yes — every chimney needs a cap. Without one, rain goes directly down the flue, animals nest inside, and debris clogs the chimney. Stainless steel caps run $150–$400 installed and last 20+ years.
What is tuckpointing?
Tuckpointing is the process of removing old, deteriorated mortar joints and replacing them with new mortar. It's critical for old NYC brick chimneys (and brownstones) — failing mortar is a major cause of chimney leaks and structural problems.
Should I use lead, copper, or aluminum chimney flashing?
Lead-coated copper is the gold standard — 50+ year lifespan, malleable, and integrates beautifully with brick. Copper is gorgeous but expensive. Heavy aluminum (24-gauge or heavier) is the budget option and lasts 25–30 years. We'll recommend based on your budget and chimney exposure.
