Masonry repair
Sweep & inspection
Caps & crowns
Flue relining
Gas fireplace serviceLevel 1 sweep and inspection to the NFPA 211 annual standard - flue, crown, cap, and flashing checked and photographed
Chimney sweep logs do not sweep chimneys. They loosen some creosote - which then falls where a brush and vacuum still have to collect it.
Fast, Reliable Chimney Repair Across Uniondale
Chimney repair in Uniondale typically runs $295 – $1,900 depending on what’s failing, and most repointing or crown work can be booked within a week. If you own one of the many 1950s-era ranches or split-levels along Jerusalem Avenue or near Hofstra, your chimney has been standing through sixty-plus Long Island winters, and the mortar is likely telling you something. We’re Flint Chimney Co Hempstead, and we service Uniondale with background-checked, uniformed techs who hand you a written price before any tool comes off the truck. Call (516) 559-6922 for a free estimate.
Why Flint Chimney Co Hempstead Is Uniondale’s Preferred Chimney Repair Company
Uniondale’s housing stock has a specific character: dense, mid-century, and full of masonry chimneys that were built well but are now reaching an age where hidden cracks become visible problems. Our techs know the difference between normal wear on a 1962 split-level near Front Street and structural trouble on a shared stack in an attached home off Hempstead Turnpike.
Every repair we quote in Uniondale comes with the 365-Day Done Right Promise: a written guarantee valid for one full year. If a covered repair fails in that window, we return at no charge. No argument, no second invoice. That’s The Garrison Standard, the operating code every Garrison Partners location follows.
We’ve been part of the Garrison Partners family since 2002. Dispatch and scheduling are coordinated from our New York City office, and crews serve Uniondale locally. A live person answers the phone 24/7. You call, you get a human, you get a date, you get a written price.
Styles & brands we work with
Chimney Crown Repair in Uniondale
Chimney crown repair in Uniondale is one of the most common jobs we do, because the crown, the concrete cap on top of the chimney, takes the full force of rain, snow, and that salt-laden Atlantic wind. On the south side of many Uniondale homes we see a faint green moss staining, which signals the crown is holding moisture and slowly failing.
When a Crown Needs Work
A cracked crown lets water into the chimney’s core, where it freezes and expands each winter. That freeze-thaw cycle widens hairline cracks into visible gaps. If you see pieces of concrete on your roof or side yard, or a flaking, sandpapery surface on the crown, water is already working its way into the brick below.
What Crown Repair Costs in Uniondale
A typical crown repair in Uniondale runs $395 – $850. If the crown is too far gone, we remove and re-pour it using a custom form and a Portland-based crown mix designed for coastal exposure. That job generally runs $850 – $1,400. We use materials from Copperfield and Olympia Chimney, specified by the job, not by margin.
Chimney Repair Companies in Uniondale
Chimney repair companies in Uniondale are not hard to find; the hard part is knowing whether the company will diagnose honestly and stand behind the work. We put everything in writing. You get a line-item price before work starts, and a one-year written guarantee when the job is done.
What Separates a Repair Company Worth Hiring
A real chimney repair company in Uniondale sends someone who performs a camera inspection before recommending work. Visual checks miss what’s inside the flue. If a company tells you the liner is cracked without showing you the image, walk away. We show you the footage. You decide with your own eyes.
How We Work in Uniondale
Every tech is background-checked and uniformed. We arrive inside the window we give you. We put down drop cloths, we work clean, and we leave the job site the way we found it. The written price you approve is the price you pay. That’s not a courtesy. That’s the contract.
Trusted Brands We Service in Uniondale
We stock and install professional-grade materials from DuraFlex, HeatShield, Famco, and Olympia Chimney, so Uniondale homeowners aren’t waiting weeks on a part. If your flue needs relining after a camera scan shows missing clay tile sections, we can move fast. If your crown needs to be rebuilt with a coastal-rated mix, we have what the job calls for on hand. You can verify every product name independently; that’s the point. The material choice goes in your written quote, by name.
See the difference
Before
After
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After
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AfterCommon Chimney Repair Problems We See in Uniondale Homes
- Crumbling mortar between bricks. Uniondale’s damp, salty air accelerates efflorescence and spalling. Mortar joints that looked solid five years ago can be loose enough to rake out with a finger.
- Green moss staining on the south-facing side. Prevailing ocean winds push moisture against one face of the chimney. Moss is not cosmetic; it means the brick is holding water it shouldn’t.
- Cracked clay tile liners. Original liners in 1950s-60s chimneys were never designed to handle sixty years of heating cycles. Hairline cracks let combustion gases leak into wall cavities.
- Loose flashing around the roofline. Flashing that separates from the chimney lets water run straight into the attic. On Uniondale’s older homes, the flashing is often original and overdue for replacement.
Pricing for Chimney Repair in Uniondale, NY
Mortar repointing in Uniondale usually runs $65 – $95 per square foot of chimney face, with most smaller jobs landing between $450 and $900 total. Spalling brick replacement adds $35 – $70 per brick depending on access. Flashing repair sits in the $350 – $700 range. Chimney waterproofing after masonry work is $295 – $495. A partial rebuild starts around $1,200, and a full teardown and rebuild from the roofline up can reach $3,000 – $5,500 depending on height and access. Tuckpointing is billed at the same rate as repointing. Call (516) 559-6922 and we’ll give you a written, line-item quote. Free estimates, every time.
We Also Serve Cities Near Uniondale
Flint Chimney Co Hempstead serves Uniondale and the surrounding communities, including Uniondale, Hempstead, East Meadow, Merrick, and Freeport. If you’re in a neighboring town and need a chimney repair estimate, same written-price policy applies. You can also read more about our full Chimney Repair services for the broader area.
Serving Uniondale, NY - Our Local Coverage Area
We’re based in the Uniondale area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Chimney Repair in Uniondale
Check your roofline. On Uniondale’s attached and semi-attached homes from the 1950s-60s, a single masonry chimney stack often contains two or three separate clay tile flues. The only reliable way to know the condition of each flue is a Level 2 camera scan, which shows the interior of each passage. Call (516) 559-6922 and we’ll schedule the inspection.
Moss means the brick is retaining water. Uniondale’s prevailing ocean winds drive damp, salt-laden air against south-facing surfaces, and when brick or mortar stays wet, it spalls and crumbles. Moss on the outside is usually paired with a failing crown or damaged waterproofing above it. Call (516) 559-6922 for a free estimate on the repair.
Yes. If you share an attached structure, a cracked liner in your flue can allow combustion gases to migrate into the adjacent unit’s wall cavity or living space. This is a known failure mode in Uniondale’s dense housing stock. If your chimney hasn’t been camera-inspected, book one. Call (516) 559-6922.
Yes. An unused fireplace doubles as a guest room for moisture and any furnace exhaust that leaks through a shared or adjacent flue. That chimney still has a crown, still has flashing, still has mortar, and still has a liner. All of it ages whether you light a fire or not. Call (516) 559-6922 and we’ll tell you plainly what needs work and what can wait.
Salt. Uniondale sits close enough to the Atlantic that salt-laden air settles on masonry and wicks into the mortar joints. Combined with winter freeze-thaw cycles, that salt accelerates the breakdown of the lime-based mortar used in 1950s-60s construction. Homes farther inland don’t face the same airborne salt load. If your joints are crumbling, call (516) 559-6922 for a written repointing quote.
One thing we want Uniondale homeowners to understand clearly. On a split-level off Jerusalem Avenue, our techs found a shared chimney stack where one flue served a gas furnace and the other an unused wood-burning fireplace. A Level 2 camera scan revealed a missing clay tile section in the unused flue, allowing the neighbor’s furnace exhaust to migrate into the dormant side. We installed a HeatShield resurfacing system in both flues to isolate the passageways, then sealed the unused thimble with a custom copper cover and rebuilt the deteriorated chimney crown on the south side where moss staining had signaled moisture intrusion. That’s what cross-flue inspection in Uniondale looks like. Call (516) 559-6922 for your free estimate, and we’ll show you exactly what’s happening inside your chimney before you spend a dollar.
Written by Hank Delano, Owner at Flint Chimney Co Hempstead.