Level 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.
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AfterFast, Reliable Chimney Repair Across Uniondale
Chimney repair in Uniondale usually means one of three things: a cracked crown, corroded flashing, or a liner that’s no longer safe. We see all three on almost every block between Hempstead Turnpike and Jerusalem Avenue. If you’ve got water stains on the ceiling near the chimney, white chalky residue on the brick, or a cap that’s rusted through, call us at (516) 963-1068. We’ll climb up, run the camera, and show you exactly what’s going on before we touch a tool.
We’re Chimney Repair specialists serving Uniondale and the surrounding towns, and we’ve been inside enough chimneys in this neighborhood to know what the salt air does to them. More on that below. First, the short version: if your chimney is leaking, spalling, or stained, don’t wait. The damage compounds fast here, and a $400 repoint today beats a $4,000 rebuild two winters from now.
Why Top Hat Chimney Is Uniondale’s Preferred Chimney Repair Company
Top Hat Chimney has been owner-operated by Wendell Pike since 1999. Not a franchise that rotates technicians through Nassau County twice a year. Wendell and his crew work Uniondale streets regularly, and when you call, a live person answers. It may well be Wendell himself. He’ll tell you what he thinks over the phone, give you a straight price before the truck rolls, and stand behind the work with the 90-Day Done Right Promise in writing. If it’s not right, one call brings him back. That’s the whole promise, stamped on every job.
Ask anyone on your street. Uniondale homeowners talk, and the same names keep coming up. Background-checked crew, real arrival windows, and a published address and license number. You’ll see the same face at the hardware store on Saturday. That’s the difference between a local owner and a national outfit that quotes one price on the phone and another at the door.
We also know the housing stock here. Post-WWII Cape Cods and ranches built between roughly 1947 and 1965, almost all with the original 4-inch clay tile liners. That matters. A generic chimney company might not think twice about it. We do, because it changes the repair conversation at nearly every Uniondale door.
Our Chimney Repair Services in Uniondale
Mortar Repointing
The mortar joints on a Uniondale chimney take a beating from salt-laden Atlantic air that sits just eight miles south. That salt wicks into the joints, and after 60 to 75 years of exposure, the mortar softens, crumbles, and falls out. Repointing means cutting out the failed joints to a proper depth and packing in fresh mortar that matches the original strength and color. On a Uniondale ranch, a typical repointing job runs $900 to $2,400, depending on how many sides need work and how high the stack sits. We match the mortar, not just the color but the hardness, so the old brick and new joints age together without cracking under thermal stress.
Spalling Brick Repair
Spalled brick is what happens when water gets inside the brick, freezes, and pops the face clean off. Uniondale’s freeze-thaw cycles make this a spring discovery every year. The brick face flakes away, leaves rust-colored stains, and eventually exposes the softer interior. We cut out the damaged brick, replace it with solid, matched units, and rebuild the affected area. The cost depends on how many bricks have gone. A small shoulder repair on a Cape Cod off Uniondale Avenue might run $700 to $1,500. If a whole side is spalled, you’re looking at partial rebuilding, which runs higher. The camera footage and a plain-English verdict, every time, no exceptions.
Chimney Waterproofing
In Uniondale, waterproofing is not an upsell. It’s the one treatment that slows down the salt-and-freeze cycle that eats mortar and brick. We apply a vapor-permeable siloxane treatment that lets the chimney breathe while blocking liquid water. That’s the key. Paint or sealant traps moisture inside and makes spalling worse. A proper siloxane application on a Uniondale chimney runs $450 to $850, depending on chimney size and condition. We recommend it after any repointing or rebuilding. Once a year, burn or no burn. Chimneys break in the off-season too. Waterproofing is what buys you years between repairs.
Flashing Repair
Flashing is where the chimney meets the roof, and it’s the most common leak point in Uniondale homes. The original flashing on a 1955 ranch is now 70 years old. It’s cracked, lifted, or torn in too many places to count. We see this on almost every street from Front Street south toward Hempstead Turnpike. A flashing repair typically runs $550 to $1,300, depending on whether we can reuse the counter-flashing or need to cut back shingles and install new step flashing. On Cape Cods with steep roof pitches, the cost runs slightly higher because access is harder. We can fix flashing without tearing off shingles in most cases. Not always, but most.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Uniondale
Wendell and his crew install and service liners and components from DuraFlex, Olympia Chimney, and Famco. We stock common parts locally for Uniondale jobs, so the turnaround on a liner replacement or cap swap is days, not weeks. DuraFlex stainless liners are the standard we recommend for oil-to-gas conversions, which Uniondale has more than its share of. Olympia and Famco caps and chase covers hold up in the salt air better than the big-box galvanized versions that rust out in five years. When we quote a part, we quote the one that will survive here, not the one that’s cheapest up front.
Common Chimney Repair Problems We See in Uniondale Homes
- Cracked crowns from salt air. The Atlantic sits eight miles south, and that salt-laden air accelerates crown deterioration dramatically. A crown that would last 25 years in Garden City might fail in 12 here. Once the crown cracks, water gets behind the flashing and into the firebox.
- Deteriorated clay liners from oil-to-gas conversion. Uniondale’s post-WWII homes were built with 4-inch clay tile flues sized for oil boilers. After the 1980s and 1990s conversion wave, gas exhaust runs cooler and produces acidic condensate. That condensate eats the clay tiles from the inside, causing cracking and flue-gas leakage that you can’t see from the chimney top.
- Popped bricks at the smoke chamber. Nor’easter-driven rain and freeze-thaw cycles force moisture into already softened mortar. Once water gets in, the freeze pops bricks in the smoke chamber, where you can’t see them without a camera. That’s usually a rebuilding job, not a simple repoint.
- Unpermitted flex-liner patches from the 1990s. Nassau County code now requires a permitted, properly sized stainless liner. But in the 80s and 90s, cheap flex-liner patches were installed without permits all over Uniondale. We routinely uncover these during inspections, and they must be disclosed and corrected before a home can close.
Pricing for Chimney Repair in Uniondale, NY
Here’s what Uniondale homeowners can expect to pay, straight from our last season of local work:
- Mortar repointing: $900 to $2,400 depending on sides, height, and joint condition.
- Spalled brick repair: $700 to $1,500 for a small shoulder; partial rebuilding above that.
- Chimney waterproofing: $450 to $850 including surface prep and siloxane application.
- Flashing repair: $550 to $1,300, higher if the roof pitch is steep or shingles need cutting back.
- Stainless liner installation: $1,800 to $3,800 for a properly sized, permitted DuraFlex liner, including the cap.
- Crown rebuild: $650 to $1,500 with a poured crown and drip edge.
Every quote is a flat price before we start. The number you hear on the phone is the number on the invoice. Free estimates, no trip charge inside the county, and we’ll always show you the camera footage before we recommend anything. $40 off any repair over $200, and 10% off for seniors and veterans, always. Call (516) 963-1068 for an exact quote.
We Also Serve Cities Near Uniondale
Our crew works the whole central Nassau corridor. From Uniondale, we regularly handle Chimney Repair in Uniondale and the surrounding towns. Hempstead, Roosevelt, West Hempstead, and Garden City are all part of our normal weekly route. If you’re right over the line, you’re still local to us. Call and ask.
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 - Chimney Repair in Uniondale
Because what you can see from the top is not what’s happening inside. Uniondale’s homes were built with 4-inch clay tile flues sized for oil boilers. When homeowners converted to gas in the 1980s and 1990s, the flue became oversized for the cooler gas exhaust, which produces acidic condensate that eats clay tiles from the inside. You can’t see that from the top. You need a camera scan. If the tiles are cracked or offset, Nassau County code now requires a permitted stainless liner. We install DuraFlex liners sized correctly for the appliance, and we pull the permit. Most Uniondale chimneys we inspect need this. Not some. Most. Call (516) 963-1068 and we’ll run the camera for free.
No, but it will come up at closing. In Uniondale’s salt-air environment, rust-stained crowns are common, and buyers’ inspectors know to look for them. The bigger issue is what the rust stains hide: a cracked crown lets water into the flue and behind the flashing, and that often means a failed liner. Nassau County’s oil-to-gas conversion history means unpermitted flex-liner patches from the 90s are common, and those must be disclosed before transfer. The fix is straightforward. We replace the crown, install a properly sized stainless liner if needed, and document it for the closing table. A typical crown-and-liner job on a Uniondale ranch runs $2,400 to $5,300. Fixing it before listing usually costs less than a buyer’s credit and speeds up the sale. Call (516) 963-1068 for a free inspection.
With proper waterproofing, a repoint on a Uniondale ranch should hold for 20 to 30 years. Without waterproofing, the salt-laden air and freeze-thaw cycles will start softening new joints in a decade or less. The original mortar in a 1955 home is now 70 years old and almost certainly needs attention. If you’re seeing sandy grit at the base of the chimney or missing mortar lines, that’s the signal. Repointing costs $900 to $2,400 on a typical single-stack ranch chimney. We’ll tell you honestly if the joints can wait another season. Sometimes they can. But the waterproofing should happen now, not after the next nor’easter. Call (516) 963-1068 to schedule an inspection.
In most cases, yes. If the existing step flashing is intact and just the counter-flashing has lifted or rusted through, we can remove and replace the counter-flashing without disturbing the shingle course. If the step flashing underneath has failed or the shingles are brittle, we may need to lift a few courses. On Uniondale Cape Cods with steep pitches, the job runs $550 to $1,300 for counter-flashing replacement and more if step flashing is involved. We’ll show you photos from the roof so you can see exactly what we’re working with before you approve any cut. The camera footage and a plain-English verdict, every time, no exceptions. Call (516) 963-1068.
It’s a repair, but not a small one. Third-degree creosote is a hard glaze that gums to the flue walls and can’t be brushed out. First-degree creosote is a brush job. Third-degree is a glaze, catch it early. In a smoke chamber, we remove the glaze with professional equipment, but the real question is whether the underlying masonry is still sound. If the creosote has sat for years, the mortar in the smoke chamber may be acid-etched and the brick face spalled. We remove the creosote, run the camera, and then decide if you need repointing or partial rebuilding. On a Uniondale chimney, depending on what we find, that’s typically $900 to $2,800. The sooner you call, the less we have to cut out. Call (516) 963-1068 for a free camera inspection.
Your flue doesn’t care how the fire looks. It cares how it breathes. If you live in Uniondale and suspect your chimney needs work, call (516) 963-1068. We’ll give you a straight answer, a flat price, and the camera footage to prove it. That’s how we’ve done it since 1999.
Written by Wendell Pike, Owner at Top Hat Chimney, serving Uniondale and surrounding Nassau County communities since 1999.