Fast, Reliable Chimney Repair Across Malverne
Chimney repair in Malverne, NY typically runs $350-$4,500 depending on scope, and most jobs are completed in a single visit with same-week scheduling. If your chimney is leaking, spalling brick, or failing inspection after an oil-to-gas conversion, we can assess it promptly and give you a written, upfront estimate before any work begins.
We’ve been answering calls from Malverne homeowners for over 42 years. Our technicians know the village’s 1920s-1950s housing stock - the Capes along Hempstead Avenue, the Tudors near Norwood Avenue, the colonials tucked between Lakeview and Lynbrook - and we understand how Long Island’s hard water, nor’easter winds, and freeze-thaw cycles punish these chimneys. A live person answers our phone 24 hours a day, 7 days a week at (855) 950-3861. We’ll be there when we say.
Why Hearthstone Chimney Co. of New York City Is Malverne’s Preferred Chimney Repair Company
Malverne sits in a corridor of pre- and post-WWII masonry construction that most sweeps only pass through. We stop here regularly. Our Chimney Repair team has documented hundreds of inspections in ZIP code 11565, and we know the patterns: dual-flue configurations that no longer meet code, terracotta liners cracked by decades of freeze-thaw cycling, and spalling brick caused by mineral-rich groundwater working through aging mortar. This is not generic suburbia. Malverne’s chimneys have specific problems born of specific history.
Our reputation in Malverne is built on showing homeowners exactly what we find. Every Level-2 camera inspection ends with photos you can see and a plain-English verdict - documented like an engineer, explained like a craftsman. No jargon, no scare tactics. If the chimney needs a reline, we explain why. If repointing will buy you another decade, we say so.
Response time to Malverne is typically same-week, with emergency calls for active leaks or blocked flues prioritized within 24 hours. We’re roughly 30 minutes from the village on a normal traffic day, and we schedule Malverne calls in clusters to keep our promise: we’ll be there when we say.
Our 90-Day Done Right Promise applies to every Malverne job. In writing, no arguing. If it’s not right, we come back. A company that plans to be in town in thirty more years acts accordingly.
Our Chimney Repair Services in Malverne
Mortar Repointing
Malverne’s hard water and aggressive freeze-thaw cycle grind away at the mortar joints in chimneys built before 1955. We’ve repointed chimneys on Hempstead Avenue homes where the original lime mortar had turned to sand, letting wind-driven rain from nor’easters penetrate straight to the flue. Our repointing matches the original mortar profile and compressive strength, using professional-grade materials from Olympia Chimney and Copperfield. Done right, repointing stops water infiltration and preserves the chimney’s structural integrity for decades. Most Malverne repointing jobs run $850-$2,400 and finish in one day.
Spalling Brick Repair
Spalling - the flaking and crumbling of brick faces - is epidemic on Malverne’s older chimneys. Long Island’s mineral-rich groundwater seeps through compromised mortar joints, saturates the brick, and freezes. Each freeze-thaw cycle pops off another layer of brick face. We’ve replaced spalled courses on chimneys where the damage had progressed so far that the flue liner was exposed to weather. Our repair removes damaged brick, installs matching replacements, and addresses the water source so the problem stops. Spalling repair in Malverne typically costs $1,200-$3,800 depending on height and severity.
Chimney Waterproofing
Malverne’s location three miles inland from the South Shore puts its chimneys directly in the path of salt-laden, wind-driven rain from nor’easters. Standard brick is absorbent - it drinks in that moisture, holds it through freeze-thaw cycles, and degrades from within. We apply vapor-permeable waterproofing agents from Gelco that let the chimney breathe while repelling liquid water. This is not the thick coating you see on bargain jobs; those trap moisture and accelerate damage. Our waterproofing treatment runs $450-$950 for a typical Malverne chimney and carries a 10-year performance expectation.
Flashing Repair
The intersection where chimney meets roof is the most leak-prone point on any Malverne home. Salt air, temperature swings, and decades of expansion and contraction fatigue the metal flashing. We’ve repaired flashing on Norwood Avenue Capes where the original galvanized steel had rusted through completely, sending water down the interior chimney chase and into the basement. We fabricate and install custom flashing using professional-grade materials, sealed with heat-resistant compounds. Flashing repair in Malverne ranges from $350-$1,200 for standard jobs; complex configurations with multiple roof planes run higher.
Chimney Rebuilding
Some Malverne chimneys have been neglected past the point of repair. When spalling has compromised structural courses, when the crown has collapsed, or when the liner damage extends the full height, rebuilding is the square deal. We rebuild using matching brick and professional-grade materials from Famco and Copperfield, with proper crowns, caps, and ventilation. A partial rebuild of the upper courses runs $2,800-$5,500; full rebuilds from the roofline up range $6,500-$12,000. Every rebuild includes our 90-Day Done Right Promise in writing.
Tuckpointing
For Malverne’s decorative brickwork - particularly the Tudor-influenced colonials with their patterned mortar joints - tuckpointing restores both weather protection and architectural character. We grind out failed joints to proper depth, repoint with color-matched mortar, and finish with the fine surface lines that give these chimneys their distinctive appearance. Tuckpointing in Malverne runs $1,100-$3,200.
What happens when you call
- 1
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 Malverne
We stock parts and materials from Gelco, Olympia Chimney, Famco, and Copperfield - brands that meet our standard for professional-grade performance, not builder-grade substitutes. For Malverne homeowners, this means no waiting for special orders on common repairs. Our trucks carry DuraFlex stainless steel liner components, HeatShield cerfractory flue sealant, and standard flashing profiles. When we find a problem, we fix it. Most jobs complete in a single visit.
Common Chimney Repair Problems We See in Malverne Homes
- Dual-flue code violations on oil-to-gas conversions. Many Malverne homes built in the 1920s-1950s share a single flue for both fireplace and oil burner. When PSEG Long Island’s natural gas expansion brings gas service to the neighborhood and the homeowner converts, that shared flue violates current Nassau County and NYS code. We regularly separate these flues and install proper liners, pulling permits through the Nassau County Building Department.
- Cracked terracotta liners from freeze-thaw cycling. Nassau County’s winter temperatures oscillate around 32°F repeatedly, pumping water into micro-cracks in terracotta liner tiles and widening them season after season. A cracked liner cannot safely vent combustion gases, particularly the moisture-heavy exhaust of modern gas appliances.
- Spalling brick from hard water infiltration. Malverne’s groundwater is mineral-rich and aggressive. Decades of seepage through failing mortar joints saturates brick courses, and freeze-thaw action pops the faces off. We’ve seen chimneys where every brick above the roofline was compromised.
- Deteriorated flashing from salt-laden nor’easter winds. Malverne’s inland position doesn’t protect chimneys from the full force of Atlantic weather systems. Wind-driven rain carries salt that accelerates corrosion at the chimney-roof intersection, and repeated freeze-thaw attacks fatigue the metal until it separates or rusts through.
Pricing for Chimney Repair in Malverne, NY
Here is what chimney repair costs in Malverne’s market. These are actual ranges from our written estimates - the number on the estimate is the number on the invoice.
| Service | Typical Range in Malverne |
|---|---|
| Mortar Repointing | $850 - $2,400 |
| Spalling Brick Repair | $1,200 - $3,800 |
| Chimney Waterproofing | $450 - $950 |
| Flashing Repair | $350 - $1,200 |
| Chimney Rebuilding (partial) | $2,800 - $5,500 |
| Chimney Rebuilding (full) | $6,500 - $12,000 |
| Stainless Steel Liner Installation | $2,200 - $4,800 |
| Level-2 Camera Inspection | $289 - $389 |
What moves the price: height of chimney (two-story Malverne colonials cost more than one-story Capes), accessibility, extent of damage, and whether Nassau County permits are required. Oil-to-gas conversions with dual-flue separation involve permit fees and inspection scheduling that add to timeline and cost.
We offer $50 off any repair over $250, a free second opinion on any written estimate, and a permanent 5% senior and veteran discount. Estimates are free. Call (855) 950-3861 to schedule.
We Also Serve Cities Near Malverne
Our technicians regularly work in Lynbrook, Lakeview, West Hempstead, and North Valley Stream - the same housing stock, the same chimney problems, the same straight dealing. If you’re in one of these neighborhoods and need Chimney Repair in Malverne or surrounding areas, we cover your area too.
Serving Malverne, NY - Our Local Coverage Area
We’re based in the Malverne 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 Malverne
No. A single flue serving both a fireplace and a heating appliance violates current New York State and Nassau County fire code. When your oil furnace was original, this configuration was common in Malverne’s 1920s-1950s construction. It is not grandfathered. If you’re converting to gas, selling the home, or simply want to operate safely, the flues must be separated and properly lined. We handle the Nassau County Building Department permit and inspection as part of the job. Call (855) 950-3861 for a free assessment.
Yes, virtually every oil-to-gas conversion in Malverne requires chimney relining. Your original terracotta flue liner was sized for the high-heat, dry exhaust of an oil boiler. A modern gas boiler produces lower-temperature, moisture-heavy exhaust that a large terracotta liner cannot vent properly. The moisture condenses on the liner walls, accelerates deterioration, and can leak carbon monoxide into the home. We install DuraFlex stainless steel liners sized precisely for your new gas appliance. We recently repaired a chimney on a 1937 Tudor on Hempstead Avenue in Malverne, where the original terracotta liner had cracked from decades of freeze-thaw cycling and the dual-flue setup violated current code. We installed a DuraFlex stainless steel liner to handle the new gas boiler’s moist exhaust and separated the fireplace flue, bringing the chimney into compliance with Nassau County requirements.
Spalling is caused by water infiltration followed by freeze-thaw cycling. Malverne’s hard, mineral-rich groundwater seeps through aging mortar joints, saturates the brick, and freezes when temperatures drop. Each freeze expands the water by about 9%, popping off thin layers of brick face. Nassau County’s repeated winter oscillations around 32°F make this worse than in more stable climates. The salt-laden air from nearby nor’easters accelerates the underlying mortar deterioration. Proper repointing stops the water source; spalled brick must be replaced. Call (855) 950-3861 for an inspection - estimates are free.
Every 12 months, without exception, and immediately after any significant chimney event - a flue fire, visible leak, or earthquake tremor. Malverne’s nor’easter exposure and aggressive freeze-thaw cycle mean damage progresses faster than in sheltered inland climates. An annual Level-2 camera inspection catches liner cracks, crown deterioration, and flashing separation before they become expensive rebuilds. We document every inspection with photos and a plain-English verdict. Our $89 Seasonal Tune-Up includes a basic inspection and cleaning.
Most structural repairs, liner installations, and any work involving flue separation require a permit from the Nassau County Building Department. We pull permits as standard practice on qualifying jobs - no extra charge for the paperwork, and we coordinate inspections so you don’t have to take time off work. Simple repointing or waterproofing below a certain scope may not require permitting; we’ll tell you upfront which category your job falls into. The permit process typically adds 3-5 business days to the timeline. Call (855) 950-3861 and we’ll walk you through what your specific repair requires.
Written by Frank Calucci, Owner at Hearthstone Chimney Co., serving Malverne and local communities since 1984.