Chimney Repair in Malverne - Inspected on Camera, Then Priced in Writing

Chimney Repair in Malverne, NY

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. Call (855) 950-3861.

Call (855) 950-3861

Why Malverne Homes Are Different

Malverne sits about three miles inland from the South Shore, square in the path of every nor’easter that tracks up the coast. Wind-driven rain forces water into hairline cracks in chimney crowns and mortar joints that would stay dry in more sheltered locations. The salt in that air, carried on prevailing southeasterlies, accelerates the chemical breakdown of mortar compounds. We’ve pulled apart crowns in Malverne that looked twenty years older than identical construction in more protected inland spots.

The freeze-thaw cycle finishes the job. Nassau County winters oscillate around 32°F, sometimes dozens of times per season. Water enters a micro-crack, expands when it freezes, and widens the opening for the next cycle. A chimney that was sound in October can have visible spalling by March. This is why we recommend annual Level-2 inspections for every Malverne home with a working flue.

Then there’s the oil-to-gas conversion wave. PSEG Long Island’s natural gas expansion into Nassau County neighborhoods has brought gas service to Malverne streets that relied on oil for generations. When a homeowner converts, the original oversized terracotta flue liner, sized for high-heat oil combustion, becomes dangerously inadequate for the lower-temperature, moisture-heavy exhaust of a modern gas boiler. Virtually every conversion in the village requires chimney relining as the critical follow-on job.

Chimney Repair in Malverne

Our technicians know Malverne’s 1920s-1950s housing stock, the Capes along Hempstead Avenue, the Tudor-influenced colonials near the village center, and the bungalows between. We’ve repaired chimneys where the original lime mortar had turned to sand, where spalled brick exposed the flue liner to weather, and where oil-to-gas conversions revealed shared-flue code violations that stopped the project cold. Every repair starts with photos you can see and a plain-English verdict. Chimney Repair is what we built this company on.

Mortar Repointing

Malverne’s hard water and aggressive freeze-thaw cycle grind away at 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. Most Malverne repointing jobs run $850-$2,400 and finish in one day.

Spalling Brick Repair

Spalling is epidemic on Malverne’s older chimneys. Long Island’s mineral-rich groundwater seeps through compromised mortar joints, saturates the brick, and freezes. Each 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. 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. 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.

Flashing Repair

The intersection where chimney meets roof is the most leak-prone point on any Malverne home. We’ve repaired flashing on Norwood Avenue Capes where the original galvanized steel had rusted through completely, sending water down the interior chase and into the basement. Flashing repair in Malverne ranges from $350-$1,200 for standard jobs.

Chimney Rebuilding

Some Malverne chimneys have been neglected past the point of repair. 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.

My Malverne home was built in 1940 and has a single flue for both fireplace and oil furnace. Is that legal now?

No. A single flue serving both a fireplace and a heating appliance violates current New York State and Nassau County fire code. 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 coordinate inspections so you don’t take time off work.

I’m converting from oil to gas in Malverne. Do I need a chimney reline?

Yes, virtually every oil-to-gas conversion in Malverne requires chimney relining. Your original terracotta flue liner was sized for high-heat, dry oil exhaust. A modern gas boiler produces lower-temperature, moisture-heavy exhaust that condenses in the oversized flue, accelerates deterioration, and can leak carbon monoxide into the home. We install DuraFlex stainless steel liners sized precisely for your new appliance. Call (855) 950-3861 for an exact quote; estimates are free.

Chimney Cleaning & Sweep in Malverne

Chimney cleaning and sweep in Malverne, NY typically costs $89 for a seasonal tune-up or $180-$450 for Level-2 camera inspection with full creosote removal, and our team completes most jobs in a single visit. We know the chimneys of Malverne’s 1920s-1950s housing stock the way a craftsman knows his tools. From Hempstead Avenue to the village center, we sweep, inspect, and document every flue with photos and a plain-English verdict. Chimney Cleaning & Sweep is preventive maintenance done right.

Level 1 Inspection & Annual Sweep

A Level 1 Inspection is the annual check every Malverne homeowner with a working fireplace or heating appliance should schedule. For the Cape Cod and bungalow stock near West Hempstead’s border, where chimneys often serve both a modest fireplace and a basement boiler, this basic sweep catches developing problems before they require a permit job. Our $89 Seasonal Tune-Up covers the sweep and basic Level 1 inspection for standard fireplaces.

Level 2 Camera Inspection

Level 2 Inspection is where we do our deepest work in Malverne. We use a high-resolution camera to scan the full length of the flue, documenting every cracked liner tile, every gap in mortar joints, every trace of glazed creosote. This is the inspection we recommend for any home in the oil-to-gas conversion pipeline. Level 2 camera inspection runs $280-$450.

Creosote & Soot Removal

Creosote glazing is the hidden danger in Malverne’s converted chimneys. When a homeowner switches from oil to gas, the oversized terracotta flue that once handled 600°F oil exhaust now carries 300°F gas exhaust. Moisture condenses. Creosote hardens into a glazed, tar-like coating that standard brushes won’t touch. We’ve pulled glazed creosote deposits an inch thick from Malverne chimneys that “passed” a visual inspection. Creosote removal with mechanical whipping tools and professional-grade solvents runs $180-$340. Standard soot removal costs $150-$280.

I live in a 1940s Colonial on Wallace Street, Malverne, and just converted from oil to gas. Do I need a chimney reline?

Yes, almost certainly. The oversized terracotta flue liner sized for your old oil burner is dangerously inadequate for modern gas exhaust, and if your fireplace and boiler share that single flue, Nassau County code requires separation. We perform a Level 2 Inspection to document the exact condition, then install a properly sized liner. Call (855) 950-3861 for a free estimate.

What causes the black crusty buildup in my chimney after switching to gas?

That’s glazed creosote, caused by low-temperature gas exhaust condensing in a flue still sized for high-temperature oil combustion. The moisture mixes with residual soot, hardens into a tar-like glaze, and reduces draft efficiency. In Malverne’s climate, where winter temperatures oscillate around freezing, this worsens. We remove it with mechanical whipping tools and professional solvents, then assess whether your flue needs resizing or relining. Call (855) 950-3861.

Fireplace Services in Malverne

Fireplace service in Malverne, NY typically costs between $180 for a standard damper repair and $4,500 for a full firebox rebuild with relining, with most homeowners paying $1,200-$2,800 for common fireplace conversion and repair work. Our technicians reach Malverne within 45 minutes from our New York City dispatch office, and we carry the parts to finish most jobs in a single visit. If you’re hearing wind whistle down your chimney on Hempstead Avenue or seeing water stains after a nor’easter, we’ll diagnose it with photos and give you a straight answer. Fireplace Services cover everything from damper adjustments to full conversions.

Gas Fireplace Service & Conversion

Malverne’s conversion from oil to gas heat has brought us hundreds of gas fireplace installations and service calls. The village’s 1920s-1950s housing stock wasn’t built for gas exhaust - original terracotta liners are oversized for high-heat oil combustion and dangerously wrong for cooler, moisture-laden gas exhaust. We service direct-vent and vent-free units, inspect gas lines and valves for leaks, and verify proper draft before we sign off. A gas fireplace conversion with insert, including relining, typically runs $3,800-$6,500.

Firebox Repair

The firebox takes direct heat, and in Malverne’s 80- to 100-year-old fireplaces, refractory panels or parged surfaces are often failing. We rebuild fireboxes with HeatShield refractory mortar or replace cracked panels with factory-matched materials. A compromised firebox lets heat reach combustible framing - a genuine safety hazard we flag immediately. Our firebox repairs in Malverne typically run $1,800-$3,200.

Damper Repair & Replacement

A stuck, rusted, or misaligned damper wastes heat and can make your fireplace unusable. In Malverne’s coastal climate, dampers corrode faster than inland. We repair or replace throat dampers, install top-sealing dampers for better efficiency, and handle cases where a damper frame has warped from decades of heat cycling. Most damper repairs in Malverne are completed in a single visit for $180-$450.

My Malverne home was built in 1940 and still has an oil-burning furnace. When I convert to gas, will my chimney need relining?

Yes, almost certainly. The original terracotta liner was sized for high-temperature oil combustion. Modern gas exhaust is cooler and carries more moisture, which condenses inside the oversized flue, saturates the terracotta, and destroys it through freeze-thaw cycling. We’ve relined dozens of Malverne chimneys following oil-to-gas conversions, typically with a DuraFlex 316L stainless liner properly sized for the new appliance. Call (855) 950-3861 for an exact quote.

After a nor’easter, water stains appeared on the wall near my fireplace. What’s likely wrong?

Wind-driven rain found a path through your chimney’s crown, flashing, or deteriorated mortar joints. Malverne’s coastal position means salt-laden air accelerates the deterioration that lets water in. We inspect the crown for cracks, the flashing for lifted seams, and the mortar for voids - then show you photos of what we found. Most water-intrusion repairs in Malverne run $650-$1,800. Call (855) 950-3861.

Chimney Cap & Crown in Malverne

Chimney cap and crown repair in Malverne typically runs $280-$850 depending on whether you need a simple galvanized cap replacement or full crown rebuild with a custom multi-flue cap. Most jobs in the 11565 ZIP code finish in a single visit. Given Malverne’s position in the nor’easter track and its salt-laden air, the right cap and a sound crown are not accessories - they’re essential protection against the conditions that destroy chimneys here. Chimney Cap & Crown work is often the first line of defense.

Cap Installation & Replacement

New cap installation in Malverne usually means replacing a rusted-out galvanized unit or fitting a first cap on a chimney that never had one. For homes this close to the South Shore, we often recommend stainless steel or copper over galvanized. The salt-laden air here eats galvanized steel in three to five years. A proper cap from Copperfield or Gelco will outlast the next nor’easter season. Standard stainless steel cap installation runs $280-$450; galvanized replacement runs $180-$320.

Crown Repair & Coating

Crown repair is where Malverne’s housing stock shows its age. Original crowns on 1920s-1950s homes were poured from mortar mix, not engineered concrete. Decades of freeze-thaw cycling, wind-driven rain, and mineral-rich groundwater seepage have left most cracked, spalled, or separating from the brick course below. We cut out damaged material, form a new crown with proper slope and overhang, and seal it. Most crown repairs run $450-$720. For crowns with hairline cracking but solid structure, we apply HeatShield flexible crown coating at $320-$480.

Multi-Flue & Custom Caps

The multi-flue cap is essential on Malverne’s dual-flue chimneys. Many homes ran fireplace and oil burner through separate flues in the same chimney structure. A multi-flue cap covers both with a single protective hood, properly screened and sloped to shed water. Multi-flue caps run $420-$680. For Malverne’s Tudor-influenced colonials with irregular profiles, we fabricate custom caps in stainless steel or copper. Custom caps run $680-$1,200 installed.

My Malverne home was built in 1935 with a shared flue for the fireplace and furnace. Will a new chimney cap fix the code violation when I switch to gas?

No. A new cap does not resolve a shared-flue code violation. Nassau County and New York State code require separate flues for fireplace and heating appliance. When you switch to gas, the Building Department inspector will flag this. The fix is flue separation and relining, which we document with our Level-2 camera inspection and handle with the proper permit. Cap and crown work comes after. Call (855) 950-3861.

I see rust stains on my chimney cap after just three years. Is that normal for Malverne?

It’s common but not acceptable. Galvanized steel caps in Malverne’s salt-laden air often rust through in three to five years. We see it constantly. Stainless steel or copper from Gelco or Copperfield lasts decades. If your cap is already failing, the rust stains are telling you water is getting in. Call (855) 950-3861 for a replacement estimate.

Chimney Liner & Rebuild in Malverne

Chimney liner replacement and rebuild work in Malverne typically runs $2,800-$7,500 depending on whether you need a stainless steel reline, a partial rebuild, or a full chimney reconstruction. Most jobs are completed in a single visit, and our technicians carry the materials to do it. If you suspect your liner is cracked, spalled, or failing a gas-conversion inspection, we’ll document it with our Level-2 camera and give you a written estimate with the full price before we start. Chimney Liner & Rebuild is the most technical work we do, and we stand behind every job with our 90-Day Done Right Promise.

Stainless Steel Liner Installation

Stainless steel is the standard for gas conversions in Malverne. A typical 6-inch DuraFlex stainless liner install for a gas boiler runs $2,800-$4,200 in this market. The liner is sized precisely for the appliance - too large and condensation pools; too small and draft fails. We measure, document, and pull the Nassau County permit. For that 1937 Tudor on Harvard Avenue, we installed a 6-inch DuraFlex for the new gas boiler and left the original flue for the fireplace, solving a shared-flue violation that would have blocked certificate of occupancy.

Liner Replacement with Terracotta Removal

Once the tiles are compromised, they’re unsalvageable for gas conversion. Liner replacement means removing the damaged terracotta, inspecting the surrounding masonry, and installing a new system rated for your appliance. In Malverne, this runs $3,500-$5,500. We use Gelco and Olympia Chimney components - professional grade, no builder substitutes.

Partial & Full Chimney Rebuild

When the crown is cracked, the top courses are spalling, and water has been entering for years, a liner alone won’t fix it. Partial rebuilds address the upper structure from the roofline up, common on chimneys that lost their cap decades ago. Partial rebuilds run $4,500-$6,800. Full rebuilds for structural settling or widespread mortar failure range from $8,500-$14,000. We pull permits, coordinate inspections, and stand behind the work in writing.

Why does Malverne’s oil-to-gas conversion often require a new chimney liner?

The original terracotta flue was sized for high-temperature oil combustion. Modern gas boilers produce lower-temperature, moisture-heavy exhaust that condenses in an oversized flue, destroying mortar and creating dangerous conditions. We install a properly sized stainless steel liner - typically 6-inch DuraFlex - that matches the new appliance and satisfies PSEG and Nassau County inspection requirements. Call (855) 950-3861 for an exact quote; estimates are free.

Do I need a permit from Nassau County for a chimney liner replacement in Malverne?

Yes. Liner replacement and any flue separation work requires a Nassau County Building Department permit, plus village of Malverne compliance where applicable. We pull permits as part of our standard process - no extra charge, no paperwork for you to chase. The permit ensures the work meets current code and protects your certificate of occupancy for gas conversion. Call (855) 950-3861 and we’ll handle the details.

Brands We Service in Malverne

We stock DuraFlex, HeatShield, Gelco, Olympia Chimney, Famco, and Copperfield components locally for Malverne jobs. Most common liner diameters, crown coating materials, and cap sizes are on our trucks, which means most repairs finish in a single visit without waiting for parts. our brands

Pricing for Chimney Cleaning in Malverne, NY

Neighborhoods We Serve in Malverne

Our trucks roll regularly through Malverne’s core residential areas. Most appointments are scheduled within 48 hours. We know the chimney conditions specific to each neighborhood’s housing era and exposure.

• Malverne Park and surrounding residential blocks
• Ocean Avenue corridor and village center
• Norwood Avenue residential area
• Davison Avenue neighborhood
• Hempstead Avenue corridor

Service Area - Cities Near Malverne

We serve homeowners throughout the surrounding Nassau County communities, with scheduling coordinated from our New York City dispatch office and crews working locally in each town. Our regular service area includes Malverne, NY, Lynbrook, NY, Lakeview, NY, West Hempstead, NY, North Valley Stream, NY, and Franklin Square, NY.

FAQs About Chimney Cleaning in Malverne