Sweep, repair, or rebuild?
"Chimney work" spans a 100x price range, so matching the fix to the problem matters:
- Maintenance — an annual sweep + inspection, $200–$500.
- Repairs — cap, crown patch, and waterproofing, $2,500–$4,200; full tuckpointing, $1,500–$4,500. Stops water damage before it spreads.
- Relining — $4,600–$8,000 for a typical 25-foot run; needed when the liner is cracked or missing.
- Rebuild — above-roofline $11,800–$20,200; full top-to-footing $20,000–$40,000+.
Most chimney problems are water problems — a $400 cap and sealer now prevents a $12,000 rebuild later.
Relining: clay vs stainless vs cast-in-place
The liner is what keeps heat and combustion gases off the masonry — a cracked or missing one is a chimney-fire and carbon-monoxide risk, not a cosmetic issue:
- Clay tile ($23–$40 per ft) — cheapest, typically used in new masonry builds; brittle and slow to install in an existing flue.
- Stainless steel flex liner ($47–$80 per ft) — the standard reline: durable, fits existing chimneys, works with gas, wood, or oil.
- Cast-in-place ($105–$180 per ft) — premium; pours a new seamless liner that also reinforces the structure.
Why a level-2 inspection is worth it
A routine level-1 sweep ($200–$500) covers a chimney in normal annual use. Pay for a level-2 video inspection ($352–$600) at the moments that actually matter: after a chimney fire, when buying or selling a home, or when you change appliances (say, adding a wood stove). The camera finds cracked flue tiles and hidden gaps a flashlight sweep misses — exactly the defects that cause fires. While the masonry is exposed, a water-repellent sealer ($470–$800) is cheap insurance against the freeze-thaw cracking that drives most rebuilds.
Frequently asked questions
How much does chimney repair cost in 2026?
Annual sweep + level-1 inspection: $200-$500. Stainless cap install: $300-$1,000. Crown patch: $400-$1,500. Tuckpointing: $15-$40 per square foot of mortar. Stainless reline (25 LF): $4,600-$8,000. Above-roofline rebuild: $11,800-$20,200, or $20,000-$40,000+ rebuilt top to footing.
Do I need to reline my chimney?
Reline if you're switching fuel (e.g. wood-burning to gas), the liner is cracked or missing tiles, you've had a chimney fire, or an inspection shows breaches — it is a fire and carbon-monoxide safeguard, not optional. Stainless steel flex liner is the modern standard at $47-$80 per linear foot; a typical 25-foot reline runs about $4,600-$8,000 installed and works with gas, wood, or oil. Clay tile is the traditional masonry option; cast-in-place is the premium long-life choice.
How often should I sweep my chimney?
Wood-burning fireplaces and stoves: annually, before the heating season, or after every cord burned. Gas: every 1-3 years. Pellet stoves: annually plus mid-season ash cleaning. Always pair the sweep ($200-$500) with a level-1 inspection, and get a level-2 video inspection ($352-$600) after a chimney fire, before buying a home, or when changing appliances.
Do I need a chimney cap?
Yes — always cap a chimney. At $300-$1,000 all-in it keeps animals out, prevents downdrafts, and blocks rain that drives the freeze-thaw cracking behind most rebuilds.
Can I DIY chimney repair?
No, except for a basic cleaning by a CSIA-certified sweep. All structural, liner, and flashing work is pro work for code and safety.
