Chimney restoration in New York City
An old chimney can reach the point where every part of it has worn at once: loose bricks up top, sandy mortar, a broken crown, a failed liner. Restoration rebuilds what cannot be saved and renews the rest, from the flue inside to the crown on top.
Chimney restoration, explained
Chimney restoration is larger work on an old chimney. Where a repair fixes one fault, a restoration deals with a stack that has several at the same time, usually after a long stretch without upkeep.
It commonly combines four jobs. The courses of brick above the roofline are taken down and rebuilt where they are loose or leaning. A new crown is formed on top. The flue is relined so heat and exhaust are contained again. And the rest of the stack is repointed, which means the worn mortar is cut out of the joints and replaced.
New York has a great many chimneys that need exactly this. Brownstones and row houses built a century or more ago have stacks laid in soft mortar that has been weathering ever since. Many were built for coal fires and later took on an oil or gas boiler, and some were never lined at all. A row house stack often carries several flues side by side, so trouble in one can affect the others.
Not every old chimney needs all of it. If the damage is confined to one area, a chimney repair or pointing alone may be the right size of job, and we will say so.
What is included
- The whole chimney surveyed, inside and out, before a plan is made
- Loose courses above the roofline taken down and rebuilt
- A new crown formed to shed water
- The flue relined where the old liner is cracked or missing
- Worn mortar joints on the remaining stack repointed
- Flashing resealed and a cap fitted to finish
- Photos of what we found and of the finished chimney
Signs you need it
- Bricks at the top that are loose, shifted or missing
- A stack that leans or bulges
- Mortar that rubs out of the joints as sand
- A crown broken into pieces
- An inspection showing a cracked or missing liner
- Leaks that return after spot repairs
How the job goes
Survey it
We inspect the stack from the roof and the flue from inside, and photograph every fault, so the plan covers the whole chimney and not only what shows.
Agree on the scope
You see the photos and get a quote that sets out which parts will be rebuilt, which will be repaired and which can stay as they are.
Take down loose brick
Brick that can no longer be trusted is removed course by course until we reach masonry that is solid.
Rebuild and repoint
The top is rebuilt with new brick and mortar, and the worn joints lower down are cut out and repacked.
Reline the flue
A new liner is run the height of the flue, sized to the fireplace or appliance it serves.
Crown and cap
A new crown is formed over the top of the brickwork, the flashing is sealed, and each flue gets a cap.
From our own jobs
Our photos, not stock.
Why it matters
An old chimney fails slowly and then quickly. Mortar that has turned to sand stops holding bricks, and the part above the roof takes the wind with nothing to tie it together. Bricks that come off a stack land on a roof, in a yard or on a sidewalk.
The inside matters as much. A boiler or fireplace venting into a flue with a cracked or missing liner sends heat and exhaust straight into old masonry, and through its gaps toward the rooms and framing beside it. Gas exhaust also carries water vapor, and when that condenses in a cold, unlined flue it eats at the mortar from within.
Restoring the chimney once, as a whole, usually makes more sense than patching a structure that keeps opening somewhere new.
Chimney restoration: common questions
How is restoration different from repair?
Scale. A repair fixes one failed part of a chimney that is otherwise sound. A restoration is for a chimney where the brickwork, the crown and the liner have all worn, and it rebuilds or renews each of them in one planned job.
Does the whole chimney have to come down?
Rarely. The section above the roofline takes the weather and is usually what needs rebuilding. Below the roof the brick is sheltered and often sound, so the work there is mostly on the flue inside.
Will the rebuilt chimney match the old one?
New brick is chosen to match the size, color and pattern of the old as closely as available brick allows. That matters on a brownstone or row house block, where the chimneys are part of the roofline. Fresh mortar joints look brighter at first and weather in over time.
Can I keep using the boiler while the chimney is restored?
That depends on which flue is being worked on. A flue cannot carry exhaust while it is open or being relined, so work on a heating flue is better planned outside the heating season. Tell us what vents into the chimney when you call.
Related chimney services
Tell us what is going on. We will tell you what it needs.
Call or text with your ZIP code and a line about the problem. For dryer vents, text DRYER and your ZIP.