Chimney Repair Cost Calculator
Add up materials, labor and safe roof access from your own quote and see the planning total — before scaffolding turns a small fix into a big one.
1 Enter your numbers
Most chimney repairs are a modest amount of material plus labor plus the cost of safe roof access — about $935 here. Enter each from your quote; scaffolding and a steep roof pitch are the usual surprises. This is a planning estimate, not a bid.
“Chimney repair” is a catch-all: it can mean a tube of crown sealant and an hour on a ladder, or it can mean rebuilding the top four feet of brick from a swing stage. That is why a single sticker price is useless — the honest number is your own materials, labor and access added up, plus a cushion for the surprises a mason finds once the cap is off. This tool does exactly that arithmetic so you can read a quote instead of trusting it.
The two line items that blow up a chimney-repair budget are almost never the brick. They are access (a second story, a steep pitch or a chimney set back from the eave often means real scaffolding, not a ladder) and the hidden extent of the damage — spalling that turns out to run three courses deep, or a crack that traces back to a failed crown. Enter access honestly and keep the contingency on.
Formula
The estimate is a plain sum with a cushion:
total = (materials + labor + access − discount) × (1 + contingency)
Everything on the right is a number you read off the quote. Nothing here is a stored price or a live rate, so the tool never goes stale — it just totals what your mason charges and pads it for the unknowns.
Worked example
A ranch with a masonry chimney needs a crown patch and two courses repointed above the roofline. The bid lists $185 in materials, $560 in labor and $240 for a small staged scaffold because the chimney sits mid-roof. No discount, and you keep a 10% contingency:
(185 + 560 + 240 − 0) × 1.10 = 985 × 1.10 ≈ $1,084
If the mason opens it up and finds a third bad course, the contingency is what absorbs the extra $90 without a second phone call.
What drives the price (and the usual surprises)
- Measure access before anything. Photograph the chimney from the ground and note the roof pitch and stories. “Can we ladder it” versus “we need a scaffold” is often a bigger swing than the masonry itself.
- Ask what the price assumes. A repair quote that excludes access, a permit or a cap is not comparable to one that includes them — normalize them in this tool before you compare bids.
- Chase the water source. Most repeat repairs are a symptom: a bad crown, a missing cap or failed flashing let water in. Fixing brick without fixing the leak buys you the same repair in two winters.
- Keep a contingency. 10% is a sensible default on masonry you cannot fully see; drop it only when the mason has already opened the work up.
Reference table
For sanity only, here are labeled planning bands for the common chimney-repair line items — use them to gut-check a quote, not to set one:
| Masonry job | Typical planning band |
|---|---|
| Crown repair / replacement | $200–$3,500 |
| Tuckpointing (per linear foot) | $8–$25 / linear ft |
| Chimney flashing repair | $200–$1,500 |
| Chimney rebuild | $1,000–$6,000 |
| Chimney cap install | $150–$600 |
These are labeled planning bands — a reality check on a written quote, never a price you should expect to pay. Chimney cost swings with roof access and scaffolding, chimney height, roof pitch, how far the damage runs and local labor. Enter the real figures from your itemized quote above, and get that quote from a CSIA-certified sweep and a licensed, insured mason.