Chimney Rebuild Cost Estimator
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How it works
Chimneys fail from the top down: the crown cracks, water enters, freeze-thaw pops the mortar, and bricks start spalling. Catch it at the repointing stage ($1,200–2,000) and you avoid the $5,000+ rebuild.
The flue liner is the safety-critical part — it contains heat and gases. Cracked clay liners must be relined with stainless ($2,500–3,500 per flue); this is not cosmetic, it is fire prevention.
Anything above repointing needs proper access: chimney work on a steep 2-story roof means scaffolding or a lift, and the access cost is baked into every quote. Suspiciously cheap bids usually mean no scaffolding — and rushed work.
Frequently asked questions
How much does chimney repointing cost?
$1,200–2,500 for a typical single-flue chimney. It grinds out failed mortar and replaces it — the right fix when bricks are sound but joints are crumbling.
Rebuild vs repoint — how do I decide?
If bricks are spalling (flaking faces), the stack leans, or mortar loss is deep and widespread, repointing will not hold — rebuild. A Level 2 inspection ($200–400) gives the definitive answer.
What does a stainless liner cost?
$2,500–3,500 per flue installed, including insulation. It is required when clay liners are cracked — and recommended when switching fuel types or installing a new insert.
How long does a rebuild take?
Partial rebuild: 2–4 days. Full rebuild from the roofline: 4–7 days. Add time for scaffolding setup and weather delays.
Can I use the fireplace with a cracked liner?
No — heat and carbon monoxide can escape through cracks into the house structure. Stop using it until a pro inspects.
What is a chimney crown?
The concrete cap at the very top that sheds water off the stack. A cracked crown ($800–1,500 to rebuild) is the #1 cause of internal water damage — seal or rebuild it at the first crack.
Do I need a cap?
Yes — a $200–400 stainless cap keeps out rain, animals and sparks. It is the cheapest chimney insurance there is.
Why do quotes vary so much?
Access (scaffolding vs ladder), height, brick matching, and whether the liner is included. Always compare itemized scopes, not bottom lines.
How often should a chimney be inspected?
Yearly for wood-burning (NFPA 211), every 2 years for gas. Creosote buildup is the leading cause of chimney fires.
Does homeowners insurance cover chimney repair?
Sudden damage (lightning, storm) usually yes; wear, neglect and freeze-thaw usually no. Document with photos before calling.