Fast, Reliable Chimney Liner & Rebuild Across Franklin Square
Chimney liner replacement and rebuild in Franklin Square typically runs $2,800–$7,500 depending on liner type and chimney height, and most Franklin Square jobs are inspected and quoted within 48 hours. We’re based in New York City and regularly on the road through Nassau County, so Franklin Square homeowners don’t wait long for a technician who actually understands their chimney. If you’re seeing water stains on the flue, smelling smoke inside the house, or you’ve recently switched from oil to gas, your chimney almost certainly needs attention — and waiting only makes the repair bigger.
We’ve been working in Franklin Square long enough to know the postwar housing stock by heart: the Cape Cods off Hempstead Turnpike, the ranches tucked behind the World War I Memorial, the modest colonials in the Mott Section. These homes were built fast in the late 1940s through the mid-1960s, and their chimneys are now 60 to 80 years old. That’s not a guess — it’s what we find on nearly every Franklin Square job site. Robert Garcia, our owner and lead technician, handles these inspections personally. You won’t get a subcontractor who needs to call the office for answers. Call (866) 884-9512 and we’ll get you scheduled.
Why Apex Chimney Cleaning Greater New York Is Franklin Square’s Preferred Chimney Liner & Rebuild Company
Franklin Square homeowners have left us enough reviews to matter — 1,096 verified customer reviews averaging 4.7 stars across our service area, with a solid share coming from the 11010 ZIP and nearby Nassau County towns. That volume didn’t happen by accident. It came from 17 years of showing up, diagnosing the problem correctly, and fixing it without the runaround.
Robert handles every chimney liner and rebuild inspection himself. When he pulls up to a Franklin Square home, he’s the one climbing the ladder, running the camera, and explaining what the flue actually looks like. No dispatcher. No crew foreman who wasn’t at the original inspection. That matters when you’re deciding whether to invest in a stainless steel liner or face a full rebuild five years from now.
Our response time to Franklin Square is typically same-day or next-day for urgent calls — draft failures, visible flue damage, or post-conversion condensation issues that can’t wait. We know the local roads, the parking situations near the tighter Mott Section streets, and the permitting rhythm with Nassau County. That local fluency saves time on every job.
We’ve also built relationships with suppliers who stock the liner diameters and insulation kits we need for Franklin Square’s common chimney configurations. That means less waiting for parts and faster turnaround from inspection to completed work.
Our Chimney Liner & Rebuild Services in Franklin Square
Stainless Steel Liner Installation
Stainless steel liners are our most common recommendation for Franklin Square’s oil-to-gas conversion homes. The original clay flues in these 1940s–1960s Cape Cods and ranches were sized for oil combustion — often 8×12 inches or larger — and they’re catastrophically oversized for modern high-efficiency gas boilers. A properly sized stainless steel liner, typically 5 to 6 inches in diameter, restores correct draft velocity and keeps exhaust gases hot enough to exit before condensing. We install DuraFlex and Olympia Chimney stainless systems, insulating the annular space to prevent the moisture damage that destroys mortar joints in Franklin Square’s freeze-thaw climate. Most stainless liner jobs in Franklin Square run $3,200–$5,800 for a standard single-flue chimney.
Flexible Liner Installation
Franklin Square’s older chimneys often have offset flues, corbelled smoke chambers, or slight shifts from decades of settlement — especially in the ranches with shallow foundations common south of Hempstead Turnpike. A flexible stainless liner navigates these irregularities without breaking the flue wall, something rigid pipe can’t manage. We size flexible liners precisely to the appliance, not the original oversized clay opening. For gas conversions with tight clearances or chimney bends, flexible installation is often the only code-compliant path. Typical flexible liner work in Franklin Square falls between $2,800 and $4,900.
Liner Replacement
When a clay tile liner has cracked, spalled, or detached — standard condition in 60- to 80-year-old Franklin Square chimneys — replacement isn’t optional. It’s a life-safety issue. Carbon monoxide, sparks, and acidic condensation escape through liner gaps into the chimney wall and adjacent framing. We remove the damaged clay (or abandon it in place when appropriate) and install a new listed liner system sized to your current appliance. In Franklin Square, we see this most often after a failed Level 2 inspection during a home sale. Liner replacement costs here typically range from $3,500 to $6,200, with taller chimneys or multiple flues at the higher end.
Partial Chimney Rebuild
Sometimes the liner failure is a symptom, not the disease. In Franklin Square, we regularly find that decades of condensation damage from oversized flues has rotted the smoke chamber, deteriorated the firebox, or compromised the chimney crown. A partial rebuild addresses the damaged section — crown, upper courses, or firebox wall — while preserving sound structure below. This is common on north-facing chases in the Mott Section and Cambria Heights-adjacent blocks, where prevailing winds drive moisture deeper into aged mortar. Partial rebuilds in Franklin Square generally run $4,500–$8,500 depending on height and access.
What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Franklin Square
We don’t guess on materials. For Franklin Square liner jobs, we spec professional-grade products from DuraFlex, Olympia Chimney, and Famco — the same lines commercial chimney contractors use on institutional buildings. We’ve standardized on these brands because their warranty support, local parts availability, and fit consistency hold up in Nassau County’s coastal climate. When Robert quotes your job, he’s already confirmed that the right diameter and insulation kit is in stock or on quick order. That means no mid-project delays while we hunt for a 6-inch flexible with the right termination cap. For homeowners near the World War I Memorial or in the tighter blocks off Dogwood Road, that efficiency matters — your driveway isn’t a long-term staging area.
Common Chimney Liner & Rebuild Problems We See in Franklin Square Homes
- Oil-to-gas conversion mismatch: The oversized clay flues originally built for oil heat — common across Franklin Square’s 11010 ZIP — chill modern gas exhaust before it exits, causing heavy condensation that spalls flue tiles and rots mortar from the inside out. Homeowners smell musty smoke or see white efflorescence staining the chimney breast.
- Freeze-thaw destruction of aged clay liners: Franklin Square’s humid coastal winters produce dozens of freeze-thaw cycles annually. Water penetrates cracked clay tiles, expands on freezing, and widens gaps until the liner is structurally compromised. North-facing chimneys in the Mott Section suffer worst.
- Crown failure accelerating liner damage: The concrete chimney crown on most Franklin Square postwar homes has cracked or washed out after 60+ years of exposure. Water enters at the top, saturates the chimney mass, and accelerates both liner deterioration and brick spalling.
- Downdraft from improper liner sizing: Homeowners who replaced boilers without resizing the flue experience chronic smoky odors, CO detector alerts, and poor appliance performance. The chimney isn’t “broken” — it’s the wrong diameter for the appliance. We see this weekly in Franklin Square’s conversion houses.
Pricing for Chimney Liner & Rebuild in Franklin Square, NY
Here’s what Franklin Square homeowners actually pay for chimney liner and rebuild work:
| Service | Typical Range in Franklin Square |
|---|---|
| Stainless steel liner (single flue, standard height) | $3,200 – $5,800 |
| Flexible liner installation (with offsets) | $2,800 – $4,900 |
| Liner replacement (clay removal + new system) | $3,500 – $6,200 |
| Partial chimney rebuild (crown/upper courses) | $4,500 – $8,500 |
| Full chimney rebuild (rare; severe structural failure) | $8,500 – $15,000+ |
Height drives cost more than anything else. A single-story ranch near Food Chain with a 15-foot chimney costs less than a two-story colonial off Hempstead Turnpike with 35 feet of flue. Multiple appliances sharing a flue, required smoke chamber parging, or extensive crown rebuilding also move the needle. We don’t quote blind — Robert inspects with a camera, shows you the footage, and gives you a fixed price before any work starts. Estimates are free. Call (866) 884-9512 to schedule.
We Also Serve Cities Near Franklin Square
Our Chimney Liner & Rebuild team regularly works throughout central Nassau County. If you’re in Lakeview, West Hempstead, Elmont, or Malverne and dealing with draft problems, liner damage, or post-conversion condensation, we cover your area with the same response standards and owner-led service we bring to Franklin Square.
Serving Franklin Square, NY — Our Local Coverage Area
We’re based in the Franklin Square 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 Liner & Rebuild in Franklin Square
Yes — almost certainly. The original clay flue in your 1960 Franklin Square home was sized for oil combustion temperatures and draft volume, typically 8×12 inches or larger. Your new high-efficiency gas boiler produces cooler exhaust that loses buoyancy in that oversized flue, condensing inside the liner and destroying mortar joints within a few years. We’ve replaced dozens of these in the Mott Section and Cambria Heights-adjacent blocks. Call (866) 884-9512 for a free inspection — we’ll camera the flue and show you exactly what’s happening.
We primarily install DuraFlex and Olympia Chimney stainless steel liners, with Famco termination hardware when the job calls for it. These are listed, warranty-backed systems — not generic import pipe. We’ve standardized on these brands because their local supply chain and fit consistency hold up in Franklin Square’s coastal climate. Robert will specify the exact product for your chimney during the inspection.
Usually, yes. Crown cracks are common on 60- to 80-year-old Franklin Square chimneys and don’t automatically require full rebuild. We evaluate whether the crown can be resurfaced with a proper cementitious overlay or if the damage has extended into the brick courses below. Most Franklin Square crown repairs run $800–$2,400 versus $4,500+ for partial rebuild. Robert will give you a straight assessment after inspection. Call (866) 884-9512 to get it checked.
Chimney liner replacement in the Mott Section typically runs $3,200–$5,500 for a standard single-flue gas conversion. The Mott Section’s ranches and modest colonials usually have straightforward 15- to 25-foot chimneys, which keeps labor and material costs predictable. Taller homes or chimneys with significant offset bends edge toward the higher end. We don’t quote by neighborhood — we quote by what your specific flue needs. Free estimates: (866) 884-9512.
A properly sized liner will improve your gas boiler’s effective efficiency by restoring correct draft and preventing exhaust gas spillage. The boiler itself won’t change, but it will finally vent as designed. In Franklin Square’s conversion homes, we routinely see reduced cycling, cleaner burns, and eliminated condensation damage after liner installation. The real gain is longevity — your boiler and chimney both last longer when the flue is correctly matched to the appliance.
Ready to Fix Your Franklin Square Chimney? Call for a Free Estimate
Franklin Square’s postwar chimneys weren’t built for modern gas appliances, and the mismatch is catching up with homeowners across the 11010 ZIP. Whether you’re seeing condensation stains, smelling smoke, or you know your clay liner is original to a 1955 Cape Cod, waiting turns a liner job into a rebuild. Robert Garcia, owner and lead technician at Apex Chimney Cleaning Greater New York, handles every inspection personally — 17 years of chimney-only focus, 1,096 verified reviews, and no dispatched crews. Call (866) 884-9512 today for your free estimate. We’ll camera the flue, explain what we find, and give you a fixed price before any work begins.
Written by Robert Garcia, Owner at Apex Chimney Cleaning Greater New York, serving Franklin Square and Nassau County since 2007.