Fast, Reliable Chimney Cap & Crown Across 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 we do in the 11565 zip code finish in a single visit. Call (855) 950-3861 and a live person will pick up, day or night.
We’ve been working on Malverne chimneys since 1984. We know the village’s 1920s-1950s colonials and Tudors by their brickwork, their dual-flue setups, and the particular way Long Island’s nor’easters chew through terracotta crowns. Our technicians are background-checked, uniformed, and carry the professional-grade materials to fix most cap and crown problems without a second trip. When you call Hearthstone Chimney Co., you’re talking to a company that plans to be answering phones in Malverne for another thirty years. That changes how we do the work.
Why Hearthstone Chimney Co. of New York City Is Malverne’s Preferred Chimney Cap & Crown Company
Our reputation in Malverne was built one chimney at a time. Homeowners here talk to neighbors. They remember which contractor showed up on time, explained the problem in plain English, and left the yard clean. We’ve earned that memory across hundreds of visits to homes near Hempstead Avenue, Norwood Avenue, and the streets around Malverne’s Long Island Rail Road station.
Response time to Malverne is typically same-day or next-day. We’re familiar with the village’s permitting process through the Nassau County Building Department, which matters more than most homeowners realize. When an oil-to-gas conversion reveals a shared-flue violation, the job stops until the right paperwork is filed. We’ve done it before. We know the inspectors.
Our 90-Day Done Right Promise applies to every Malverne job in writing. If it’s not right, we come back. No arguing, no paperwork chase. Frank Calucci put that policy in place over 42 years ago, and it still governs how we work.
Our Chimney Cap & Crown Services in Malverne
Cap Installation
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. We measure your flue or flues on site and fabricate to fit. For homes near the South Shore, three miles away, 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 installed by our Chimney Cap & Crown team will outlast the next nor’easter season.
Cap Replacement
Most cap replacements we do in Malverne involve removing a builder-grade cap that was never sized correctly for the flue. An oversized cap lets rain in. An undersized one traps exhaust. We document the existing flue with our Level-2 camera inspection, show you the photos, and explain the verdict before we order. No surprises on the bill. The estimate number matches the invoice number.
Crown Repair
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 of them cracked, spalled, or separating from the brick course below. We cut out the damaged material, form a new crown with proper slope and overhang, and seal it. Most crown repairs in Malverne run $450-$720.
Crown Coating
For crowns with hairline cracking but solid structural integrity, we apply a flexible waterproof crown coating from HeatShield. This isn’t paint. It’s a vapor-permeable membrane that bridges small cracks while letting the masonry breathe. In Malverne’s climate, where chimneys endure repeated freeze-thaw assault, crown coating can add five to seven years of service life to a sound crown. We use it often on Capes and colonials where the crown is tired but not failed.
Multi-Flue Cap
The multi-flue cap is essential equipment on Malverne’s dual-flue chimneys. Many of these homes ran fireplace and oil burner through separate flues in the same chimney structure. A multi-flue cap covers both flues with a single protective hood, properly screened against animals, properly sloped to shed water. When you’re converting from oil to gas, we often pair a new multi-flue cap with crown repair or coating. The cap protects the investment.
Custom Cap
Malverne’s Tudor-influenced colonials and irregular chimney profiles don’t always accept stock caps. We fabricate custom caps in stainless steel or copper to fit odd dimensions, multiple flue sizes, or decorative brickwork you want to preserve. Custom caps run $680-$1,200 installed depending on metal choice and complexity. We measure, fabricate, and install. Most custom jobs finish in one visit.
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 professional-grade materials from DuraFlex, HeatShield, Gelco, and Copperfield on our trucks. That means no waiting for parts to ship to Malverne. No substitute brands. When we quote your job, we’re quoting with the actual materials we’ll use, not a generic allowance. For homeowners in 11565, this translates to faster turnaround and a repair that matches the original specification or exceeds it. We don’t do builder-grade.
Common Chimney Cap & Crown Problems We See in Malverne Homes
- Spalled terracotta crowns from freeze-thaw damage. Malverne’s location in the nor’easter track means chimneys absorb wind-driven rain, then face repeated freeze-thaw cycles each winter. Water enters micro-cracks, expands, and widens them. By spring, the crown is crumbling.
- Galvanized cap rust-through from salt-laden air. Proximity to the South Shore accelerates corrosion. We see three-year-old galvanized caps with gaping rust holes that let squirrels and rain straight into the flue.
- Condensation damage from unlined gas exhaust in oversized oil flues. When Malverne homeowners convert to gas without relining, the lower-temperature exhaust condenses inside the oversized terracotta liner. Water drips onto the crown and rots it from below.
- Shared-flue code violations surfacing during oil-to-gas conversions. Many pre-war homes ran fireplace and furnace through flues that shared a liner or lacked proper separation. Nassau County Building Department flags this on inspection. The cap and crown work becomes part of a larger separation and relining project.
Pricing for Chimney Cap & Crown in Malverne, NY
| Service | Typical Range in Malverne |
|---|---|
| Standard galvanized cap replacement | $180-$320 |
| Stainless steel cap installation | $280-$450 |
| Multi-flue cap (2-3 flues) | $420-$680 |
| Custom copper or stainless cap | $680-$1,200 |
| Crown repair (partial rebuild) | $450-$720 |
| Crown coating (HeatShield) | $320-$480 |
| Full crown replacement | $850-$1,400 |
What moves you up or down in these ranges? Three things: accessibility (steep roof, tight yard), material choice (copper costs more than stainless, stainless more than galvanized), and what we find when we open it up. A crown that looks cracked from the ground can reveal saturated brick below once we remove the damaged layer. We document everything with photos and explain before we proceed. Estimates are free. Call (855) 950-3861.
Malverne’s Oil-to-Gas Conversion Wave and Your Chimney
Here’s what you won’t find on a generic chimney service page. Malverne sits in the middle of PSEG Long Island’s natural gas expansion into Nassau County. Homeowners are decommissioning oil tanks and bringing in gas boilers at a pace we haven’t seen in decades. The problem: your chimney was built for oil.
Oil combustion runs hot and dry. The original terracotta flue liner, sized for that high-heat exhaust, is grossly oversized for a modern gas boiler’s lower-temperature, moisture-laden exhaust. Gas exhaust condenses inside that big liner. The condensation is acidic. It attacks the terracotta, attacks the mortar joints, and drips down onto your crown where it causes damage you can see from the ground. Every oil-to-gas conversion in Malverne needs a chimney evaluation. Most need relining. And the cap and crown work has to be right, or you’re protecting a compromised system.
On a Tudor revival near Hempstead Avenue, we found the original 1930s terracotta crown had spalled from years of freeze-thaw, letting water into a shared flue that still served an active oil burner. We removed the crumbling crown, installed a new custom copper multi-flue cap over both flues, and sealed the crown with a waterproof coating. A common fix for Malverne homes converting from oil to gas.
We Also Serve Cities Near Malverne
Our technicians cover Malverne and the surrounding villages regularly. We also work in Lynbrook, Lakeview, West Hempstead, and North Valley Stream. Same trucks, same materials, same 90-Day Done Right Promise. If you’re near the border, call us. We likely have a technician in your area today.
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 Cap & Crown in Malverne
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. The cap and crown work comes after. Call (855) 950-3861 for a free evaluation before your gas company schedules connection.
Long Island’s hard, mineral-rich groundwater seeps through aging mortar, and the freeze-thaw cycle pumps water into micro-cracks each winter. Malverne’s pre-war chimneys were built with mortar crowns, not engineered concrete, so they’re more susceptible. A proper crown rebuild with slope, overhang, and waterproof coating breaks this cycle. Call us for an inspection and we’ll show you exactly what’s happening up there.
It’s common but not acceptable. Galvanized steel caps in Malverne’s salt-laden air, three miles from the South Shore, 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.
Yes. We measure on site and fabricate custom caps to fit irregular profiles, multiple flue sizes, and decorative brickwork you want to preserve. Most custom cap installations in Malverne finish in a single visit. We’ll show you photos of similar work we’ve done on village Tudors and colonials. Estimates are free.
You need a full chimney evaluation first. The gas company will not connect if the chimney fails inspection. If your crown is cracked or spalled, it needs repair. More critically, the oversized terracotta liner sized for oil exhaust must be evaluated for gas-appropriate relining. We handle the inspection, documentation, crown work, and relining as a coordinated project. Call before your gas connection date so we can keep your timeline on track.
Ready to protect your Malverne chimney? Call Hearthstone Chimney Co. at (855) 950-3861. A live person answers 24 hours a day, 7 days a week. We’ll schedule your free estimate, show up when we say, and stand behind the work with our 90-Day Done Right Promise in writing. Done right, and we stand behind it.
Written by Frank Calucci, Owner at Hearthstone Chimney Co., serving Malverne since 1984.