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 Syosset
Most chimney repairs in Syosset run between $350 and $2,800 depending on what’s failed. A cracked crown typically costs $600 – $1,100 to rebuild, while repointing runs $25 – $40 per square foot. If you’ve noticed water staining on the ceiling near the fireplace, a draft problem, or crumbling mortar on the exterior chimney, call (516) 559-6922. We dispatch uniformed, background-checked crews to Syosset from our New York City coordination office, and every job gets a written price before any work starts.
Why Flint Chimney Co Hempstead Is Syosset’s Preferred Chimney Repair Company
Syosset homeowners deal with a specific set of chimney problems, and we’ve seen most of them on houses from Muttontown Road to the streets off South Oyster Bay Road. The older split-levels near the Syosset LIRR station have masonry that’s been through sixty winters, and the colonials deeper into the woods back up to trees that drop leaves and branches onto roofs and into flues all fall. Our crews know the housing stock here. They know what a 1960s fireplace throat looks like after forty years of use, and they know what a raccoon does to a chimney cap in March.
We work under the Garrison Standard, the operating code for every Garrison Partners location. That means one thing above all: the price we quote is the price you pay. No adjustments after we open up the flue. Every repair carries a 365-Day Done Right Promise, a written guarantee valid for one full year from the service date. If a covered repair fails within that year, we return and fix it free. No charge, no argument. Hank Delano runs our repair division, and he holds every technician to that standard on every Syosset job.
Styles & brands we work with
Chimney Crown Repair in Syosset
Chimney crown repair addresses the concrete or mortar cap at the top of your chimney, the part that keeps rainwater from getting inside the masonry. In Syosset, we rebuild a lot of crowns because the freeze-thaw cycle here is relentless. Water seeps into tiny cracks in the crown, freezes overnight, expands, and widens those cracks. Repeat that a hundred times over a decade and the crown starts breaking apart. Once the crown fails, water moves down through the brick and erodes the mortar joints below it.
The Crown Rebuild Process
We remove the damaged crown material, install a properly overhanging concrete crown with a drip edge, and slope it away from the flue. The overhang matters. A crown that sits flush with the brick lets water run straight down the face of the chimney, which is why so many Syosset chimneys show spalling after twenty years.
What It Costs
Expect $600 – $1,100 for a crown rebuild on a standard single-flue chimney in Syosset. Multi-flue chimneys on larger colonials run higher because there’s more square footage to form and pour. If the crown damage came with flashing failure, we’ll quote that separately before we start.
Chimney Repair Companies in Syosset
Chimney repair companies in Syosset range from one-man operations to full-service masonry and liner shops. What separates us is documentation. Flint Chimney Co Hempstead writes down the scope, the price, and the guarantee before any tools come off the truck. That’s the Garrison Standard, and it applies to every chimney repair job in Syosset, whether it’s a repointing job on a 1960s split-level off Jericho Turnpike or a full flue relining on a colonial near Syosset-Woodbury Road.
Working With a Company That Answers
Our phones are answered by a live person 24 hours a day, seven days a week. No voicemail trees, no callback forms. When a Syosset homeowner calls about a suspected raccoon nest or water getting behind the firebox, they speak to someone who can schedule a crew immediately. That matters when you’ve got a blocked flue and smoke is rolling back into the living room.
Materials We Specify
We install and work with professional-grade products like Copperfield caps and dampers, Olympia Chimney liners, and Famco connectors. On relining work, we use DuraFlex stainless steel or HeatShield resurfacing, chosen by the job’s actual dimensions and fuel type. Never by what’s easiest for us to stock.
Trusted Brands We Service in Syosset
We service and install components from Copperfield, Olympia Chimney, and Famco on Syosset chimneys. Copperfield makes the chimney caps and dampers we use on the majority of our animal exclusion and crown rebuild jobs. Olympia Chimney supplies stainless steel liners for gas and oil flue relining on the homes converting from open fireplaces to gas inserts. Famco builds the connectors and hardware we rely on for combustion appliance venting. Our crews stock the common replacement parts for these brands, which means faster turnaround when a Syosset homeowner needs a cap replaced or a liner section addressed before burning season starts.
Common Chimney Repair Problems We See in Syosset Homes
- Uncapped flues and animal entry: The wooded lots throughout Syosset, especially along the northern neighborhoods near Cold Spring Road and the areas west of Woodbury Road, are prime territory for squirrels and raccoons. They move in through open flues every spring, build nests, and block draft entirely. Our repair calls for this include a Copperfield cap installation after the flue is cleared.
- Cracked crowns from freeze-thaw cycles: Nor’easters bring wet weather that saturates chimney crowns, and the temperature swings that follow freeze and thaw that moisture repeatedly. After twenty or thirty winters, most Syosset crowns have stress cracks. On a multi-flue chimney, one cracked crown means water can reach every flue below it.
- Spalling brick on older split-levels and colonials: Brick faces flake, pop, and fall away when water gets behind the surface. The houses built in the 1950s and 1960s around Syosset have chimneys that weren’t waterproofed at the time, and many haven’t been since. Spalling is the visible sign that structural repair is overdue.
- Third-degree creosote glaze in multi-fireplace homes: Larger Syosset properties often have two or three fireplaces plus a gas or wood insert. Each flue gets used differently, and the smoke chambers on these systems frequently hold glazed creosote that a standard sweep won’t remove. That’s not a cleaning problem. It’s a repair and resurfacing problem.
See the difference
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AfterPricing for Chimney Repair in Syosset, NY
Here’s what we charge in Syosset. Crown rebuilds run $600 – $1,100 for a single flue, and $1,200 – $2,800 for multi-flue chimneys on larger colonials. Mortar repointing runs $25 – $40 per square foot, with most partial repointing jobs landing between $450 and $1,500. Flashing repair ranges from $350 – $800 depending on whether it’s a simple patch or a full step-flashing replacement. Flue relining with DuraFlex stainless steel starts around $2,500 for a single-story chimney. Waterproofing with a vapor-permeable sealant typically costs $400 – $900. Call (516) 559-6922 for a free estimate, and you’ll get a written price before any work begins.
We Also Serve Cities Near Syosset
Our crews serve Syosset and the surrounding Nassau County communities, including Chimney Repair in Syosset‘s neighboring towns of Plainview, Hicksville, Westbury, and Levittown. If you’re in one of those areas and need crown repair, repointing, or a full Chimney Repair assessment, we’ll schedule a visit with the same written pricing policy.
Serving Syosset, NY - Our Local Coverage Area
We’re based in the Syosset 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 Syosset
Every 12 months, before burning season starts. Multi-flue systems on Syosset colonials have more points of failure than a single-flue chimney. Each flue needs its own liner assessment, the crowns and flashing cover a wider area, and properties with several fireplaces often have at least one that rarely gets used, which means undiscovered damage. An annual Level 2 inspection catches crown cracks, liner gaps, and animal entry before they become full repairs. Call (516) 559-6922 to schedule one.
Because the repair didn’t address the root cause, which is usually a crown with an inadequate overhang or no drip edge. In Syosset’s freeze-thaw climate, water that sits on a flat or flush crown will keep freezing and expanding inside the smallest cracks. A durable crown rebuild needs a two-to-three-inch overhang sloped away from the flue, a drip edge underneath, and the right concrete or polymer mix. Patch jobs without those details fail again within a few winters. We write the crown spec into the work order so you know exactly what you’re getting.
Yes, in two ways. A raccoon nest completely blocks the flue, which forces smoke and carbon monoxide back into the firebox when you light a fire. But also, raccoon urine and droppings are corrosive to masonry flue tiles and can contribute to liner deterioration. In Syosset, where wooded lots meet older uncapped chimneys, this shows up a lot in the spring. The fix is removal, a full flue cleaning, then a Copperfield or Olympia cap with a secure animal guard installed at the crown.
Third-degree creosote glaze cannot be swept out. It’s a hardened, tar-like coating fused to the flue walls, and it requires mechanical removal or chemical treatment followed by mechanical removal. On masonry flues, we often use a professional-grade chemical breakdown before brushing. For more extensive cases, a HeatShield resurfacing or a stainless steel DuraFlex relining is the correct repair. Syosset homes with several fireplaces and inconsistent burning habits are the ones most likely to develop glazed creosote in the smoke chamber. Call (516) 559-6922 if your last sweep report flagged third-degree glaze.
Look for water staining on the ceiling or walls near the fireplace, damp mortar in the attic, or visible rust and lifting on the metal where the chimney meets the roofline. Flashing failure is a leading cause of chimney leaks in Syosset because our nor’easters drive rain sideways and freeze-thaw cycles separate the metal from the masonry. A proper flashing repair uses step flashing interlocked with the roof, counter-flashing embedded into the mortar joint, and a high-quality sealant at the top edge. If you see signs of water inside, don’t wait. Call (516) 559-6922 and we’ll send a crew to inspect it.
Call Flint Chimney Co Hempstead for Chimney Repair in Syosset
Hank Delano and the repair team at Flint Chimney Co Hempstead are ready to take your call at (516) 559-6922. We’ll walk you through what you’re seeing, schedule a visit, and give you a written quote before any work starts. Every repair in Syosset carries our 365-Day Done Right Promise, a full-year guarantee in writing. If it fails, we come back free. That’s the Garrison Standard.
Written by Hank Delano, Owner at Flint Chimney Co Hempstead, serving Syosset and Nassau County since 2002.