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Chimney sweep logs do not sweep chimneys. They loosen some creosote - which then falls where a brush and vacuum still have to collect it.
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Before
AfterMortar Repointing in New York, NY
Mortar repointing in New York runs between $15 and $30 per square foot for most residential chimneys, with the typical New York chimney repointing job landing somewhere between $800 and $2,400 total. That’s the honest price range, and we tell you exactly what yours will cost before any work starts. At Ashby Chimney New York, we’ve been repointing mortar joints on New York chimneys since 2002, and we put the price, the arrival window, and the guarantee in writing before the first brick gets touched.
Repointing means removing the old, crumbling mortar from between the bricks of a chimney and packing in fresh mortar so the structure stays tight against water, freeze-thaw cycles, and the wind that whips off the rivers. Homeowners usually discover they need it when they see sandy grit collecting at the base of the fireplace, or when a Chimney Repair in New York technician points out that the joints have gone soft. It’s the most common structural repair we do in this city, and it’s one of the few chimney jobs where catching it early genuinely saves you money. Need to talk to a person right now? Call (315) 644-2982 and a live person answers, day or night.
Key Takeaways
- Most New York mortar repointing jobs cost between $800 and $2,400, depending on the size of the chimney and how much mortar has failed.
- Failing mortar lets water into the brickwork, and in New York’s freeze-thaw winters, that water expands and blows bricks apart.
- Every Ashby Chimney New York repointing job starts with a written price. No exceptions, no price changes at the door.
- The 365-Day Done Right Promise covers every repointing repair in writing. If it fails, we come back and fix it free.
- We use mortar matched to the original mix and materials from Olympia Chimney and Famco, because the wrong mortar does more harm than good.
When You Need Mortar Repointing
Most New York homeowners don’t climb onto the roof to check their mortar joints, and I don’t expect you to. What you’ll notice instead are the symptoms. Here’s what tells us a chimney needs repointing:
- Sand or grit at the base of the fireplace or on the hearth. When mortar dries out and crumbles, its pieces fall down the flue and collect where the fireplace meets the floor. This is the earliest and most common sign, and in older New York homes with unlined chimneys, it can show up every spring.
- Soft, flaking, or recessed mortar between the exterior bricks. If you can scratch mortar out with a key or a house key, it has lost its structural integrity. On the Upper East Side and in brownstones, we see this in chimneys that haven’t been touched in 30 or 40 years.
- Water stains on the ceiling around the chimney chase. In New York, rain comes hard and sleet comes sideways. If the mortar joints on the roof-side section of the chimney have cracked open, water runs straight through and trails down the interior walls. Homeowners in Bay Ridge and Forest Hills call us about this after every major storm system.
- Bricks that are cracked, spalled, or sitting slightly out of line. When water gets behind a brick and freezes, it pops the brick face off or pushes it outward. If you see brick pieces on your roof or sidewalk near the chimney, the mortar has already failed in this section and the brick is next.
- A chimney that looks “weathered” or has white powdery streaks on it. That white powder is efflorescence, which happens when water dissolves the salts inside the mortar and pushes them to the surface. It’s a direct signal that the mortar is wicking moisture, and in a city where the temperature swings 40 degrees inside a week, that condition worsens fast.
- An inspection report from a sweep that notes “open mortar joints” or “failed pointing.” This is the one we recommend you act on. Once a certified sweep has flagged it, the next call should be for repointing before the damage spreads past the mortar and into the bricks themselves.
If any of these sound familiar, call (315) 644-2982. We’ll come out, assess the joints, and tell you exactly what the repair will take, in writing. You won’t be guessing.
Our Mortar Repointing Process
Repointing done right is slow, careful work. Done wrong, it looks fine for a month and falls out after the first hard freeze. At Ashby Chimney New York, we follow a process that has held up on New York chimneys for over two decades. Here’s how we do it:
- We inspect the chimney before anything else. We walk around the full structure, from the base to the crown, and identify every joint that has failed. We check not just the visible face of the chimney, but also the sides and back where New York rowhouses hide their worst damage. The written price is built from what we see, so the quote matches the actual work.
- We give you a written price before any work starts. Not an estimate with a verbal “we’ll see.” A written number, delivered on the spot, covering the total scope. If we find something extra once we start, we stop and talk to you before another dollar gets spent. No surprises, no “we hit a snag” markup.
- We grind out the failed mortar to the correct depth. The old, soft mortar has to come out to a depth of roughly three-quarters of an inch so the new mortar has something to grab onto. On older New York brick, especially the soft salmon brick used in early 1900s construction, we use careful hand techniques and controlled power grinding so the brick faces stay intact.
- We mix fresh mortar matched to your existing brick. This is the step where material brands matter. We source from chimney-trade suppliers like Olympia Chimney and Famco, and we match the mortar’s color, texture, and compressive strength to the original mix. Using the wrong mortar, too hard or too soft, causes the new joints to crack the bricks or fail, which is a costly mistake we refuse to make.
- We pack the new mortar in tight, joint by joint, and tool it to a clean finish. Each joint gets packed in layers so there are no air pockets trapped inside. Then we tool the surface to a smooth, weather-resistant finish that sheds water the way the original mason intended. The finished joints should be tight, even, and look like they belong to the chimney.
- We clean up, write the guarantee, and explain what we did. We sweep the work area, remove our own debris, and hand you a written guarantee covering the repointing work. You’ll know what we did, what we used, and what’s covered if anything goes wrong within the guarantee period.
This is the Chimney Repair standard we bring to every job, and it’s the reason New York homeowners call us back when the next chimney problem shows up.
Mortar Repointing Pricing in New York
Most mortar repointing jobs on New York chimneys fall between $800 and $2,400, with serious structural repointing on large or hard-to-access chimneys running higher. The specific price depends on the size of the chimney, the number of joints that need cutting, and how far up the structure the damage extends. Here’s a realistic breakdown:
- Small chimney, partial repointing: $800 to $1,200. Typically a chimney with a small section of failed mortar near the crown or around the flashing line.
- Standard New York chimney, full repointing: $1,200 to $2,200. Covers the average 2-story resawn brick chimney with failing joints across most or all of its height.
- Large or steep-access chimney, full repointing with repairs: $2,200 to $4,500. For tall chimneys, chimneys on steep-pitched roofs, or structures that also need brick replacement or a partial rebuild.
What affects the price:
- Chimney height and roof accessibility. In neighborhoods like Cobble Hill and Park Slope, a chimney four stories up with no roof hatch costs more to access safely. We factor the setup and safety equipment into the quote, and you’ll see it as its own line item.
- Number of failed joints. A lone 2-square-foot patch by the crown costs less than full repointing around all four sides. We price by the joint, but we’ll tell you if partial repointing even makes sense before we do it. Sometimes the smart repair is the full one, and we’ll explain why.
- Condition of the surrounding brick. If some bricks have spalled or cracked past saving, we’ll need to cut them out and set replacements. That adds material and labor, and we’ll show you the change before we do it.
- Mortar type and matching work. Older New York brownstones and pre-war buildings often have pigment-matched mortar and unusually sized joints. Matching them takes extra care and adds some cost, but the visual difference is worth it.
Every Ashby Chimney New York quote is free. Call (315) 644-2982 and we’ll come to your home, inspect the chimney, and hand you a written price on the spot. What we quote is what you pay, and the number on the final invoice matches the number we gave you at the door.
FAQs – Mortar Repointing
How much does mortar repointing cost in New York?
Mortar repointing in New York typically costs between $800 and $2,400, with most standard residential chimneys landing around $1,500 for full repointing. The final price depends on chimney height, the number of failed joints, and whether any bricks need replacement at the same time. Call (315) 644-2982 for a written quote, free of charge.
Can you repair the mortar without rebuilding the chimney?
In most cases, yes: repointing restores the mortar joints without touching the chimney’s brick structure, and a full rebuild is only necessary when the bricks themselves have begun to fail. If the mortar alone is gone, you can usually avoid the cost and disruption of a rebuild entirely. We’ll tell you during the inspection exactly where your chimney sits on that spectrum.
How long does mortar repointing last in New York weather?
A properly done repointing job on a New York chimney should last 20 to 40 years, because the joints are the first thing to weather but also the first thing a good repointing restores. The freeze-thaw cycles in winters like the ones we get off the Atlantic are brutal on chimneys, but tight, correctly matched mortar handles them without cracking. We back every repointing job with the Kingswell Guarantee, and if a repair fails inside the guarantee period, we return and fix it at no charge.
Can you come out and do it the same day?
Yes, we can often complete a standard repointing job the same day we arrive, and our schedule is built around New York homeowners who need work done quickly, not developers with open-ended timelines. Call (315) 644-2982 in the morning and a live person will give you the next available window, in writing, before you hang up.
Is repointing covered by my home insurance?
Repointing is usually considered routine maintenance, not sudden damage, so most New York homeowners policies won’t cover it unless a specific covered event like a falling tree limb caused the damage. We document every inspection and repair thoroughly, so if your claim does move forward, you’ll have the paperwork you need. When you call (315) 644-2982, ask us about the inspection note we provide with every job.
Written by Nathan Corliss, Owner at Ashby Chimney New York, serving New York.