Fast, Reliable Chimney Cap & Crown Across Hewlett
A properly fitted chimney cap and sound crown in Hewlett typically runs $280-$890 depending on whether you need a standard single-flue replacement or a full multi-flue cap with crown coating, and our Chimney Cap & Crown team completes most jobs in a single visit. We’ve been answering calls from Hewlett homeowners since 1984, and we know the 11557 ZIP’s chimneys better than most because we’ve been climbing them for over 42 years. Call (855) 950-3861 any hour - a live person picks up, every time.
Hewlett sits on the South Shore of Nassau County just inland from Reynolds Channel and Brosewere Bay, where persistent salt-laden air off the bays accelerates brick spalling and mortar erosion on the 1940s-1960s masonry chimneys that dominate the neighborhood - a deterioration rate far more aggressive than inland Nassau County towns see. Nearly every one of these chimneys pulls dual duty: a wood-burning fireplace above and an oil-burning furnace flue below sharing the same masonry structure, so a single cracked tile or deteriorated liner simultaneously creates a fire hazard and a carbon monoxide risk in the same home. That’s why we treat every cap and crown call in Hewlett as a full-system inspection, not just a quick hardware swap.
Our technicians are on the road through the Five Towns daily. From the Cape Cods clustered near the Hewlett-Woodmere border to the split-levels along Peninsula Boulevard, we carry the right cap sizes and crown coating materials so we’re not making a second trip. Frank Calucci built this company on showing up when we say and finishing what we start.
Why Hearthstone Chimney Co. of New York City Is Hewlett’s Preferred Chimney Cap & Crown Company
We’ve provided Hewlett Chimney Cleaning & Sweep and chimney repair since the early 1980s, long before the post-Sandy renovation boom. Homeowners here know our trucks because we’ve parked them on their streets for decades, and they call us back because the 90-Day Done Right Promise means something in a town where too many contractors left after the storm work dried up. Our promise is in writing, with no arguing - if it’s not right, we come back. That’s the Keystone Standard.
Every inspection ends with photos you can see and a plain-English verdict. No jargon, no scare tactics, just what we found and what it means for your house. Our background-checked, uniformed technicians document every crack, every spalled brick, every deteriorated crown joint like an engineer, then explain it like a craftsman.
Calls are answered by a live person 24 hours a day, 7 days a week - not a voicemail, not a callback queue. Most jobs are completed in a single visit with no-hassle upfront pricing: the number on the estimate is the number on the invoice. A square deal, no surprises on the bill.
Our Chimney Cap & Crown Services in Hewlett
Multi-Flue Cap Installation & Replacement
Hewlett’s post-WWII colonials and Cape Cods often have two or three flues poking through the same chimney top, and those multi-flue caps take the worst beating when Atlantic nor’easters roll in off Reynolds Channel. We install heavy-gauge galvanized and stainless multi-flue caps from Famco and Gelco with full-wrap construction that secures to the crown, not just the flue tiles. On Peninsula Boulevard near the Hewlett-Peninsula Public Library, we replaced a wind-ravaged multi-flue cap with a heavy-gauge galvanized steel Famco unit and applied Crown Coat sealant to a Sandy-patched crown that had hidden a deep crack - within a year the old cap’s miter joints had separated from nor’easter gusts; now the new full-wrap cap and sealed crown hold tight against the Atlantic blast.

Crown Repair
The crown is the concrete slab that seals the top of your chimney between the flues, and in Hewlett it’s under constant assault. Salt-spray-driven spalling cracks the crown, letting storm rain seep into the shared oil-wood flue and accelerate creosote-sulfate corrosion of clay tiles. We cut out deteriorated crown sections, pour new high-strength concrete with proper slope and drip edge, and seal with professional-grade compounds. For crowns with structural integrity but surface cracking, we apply Crown Coat sealant from Hewlett‘s own supply stock - no waiting for parts.

Crown Coating
Not every cracked crown needs full replacement. Our crown coating service uses flexible, breathable sealants that bridge hairline cracks while allowing moisture trapped in the masonry to escape. This matters enormously in Hewlett, where Hurricane Sandy-era rushed cap repairs are now failing and masking deeper structural cracks underneath. A coating job buys you years if the crown’s structure is sound, and it’s the natural next step when your annual cleaning turns up early deterioration - one of our Fireplace Services in Hewlett. We price it honestly: coating when coating makes sense, replacement when it doesn’t.

Cap Installation & Replacement
Single-flue caps protect individual flues from rain, animals, and debris. We stock standard sizes for the 8×8 and 8×12 flue tiles common in Hewlett’s 1950s-1970s housing stock, and we fabricate custom caps for odd-size or deteriorated flue openings. Every cap we install is properly screened to keep squirrels and starlings out without restricting draft - critical for oil-burner flues that already run cooler and more condensation-prone than gas systems.

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 Hewlett
We work exclusively with professional-grade materials: DuraFlex stainless liners and components, HeatShield cerfractory resurfacing products, Gelco and Famco caps and accessories, and Copperfield supply-house specialties. No builder-grade substitutes, no hardware-store improvisation. We maintain local inventory for the Five Towns market, which means your cap or crown repair in Hewlett doesn’t wait on a UPS truck from Pennsylvania. Our technicians carry the common sizes and repair compounds on every truck, and our warehouse in the service area stocks the less common multi-flue configurations and custom-fabrication materials.
Common Chimney Cap & Crown Problems We See in Hewlett Homes
- Salt-spray spalling cracks crowns and lets storm rain infiltrate shared flues. The south and west faces of Hewlett chimneys catch the full brunt of bay-driven weather, and once water hits the oil-soot-creosote mix inside a shared flue, the chemical corrosion of clay tiles accelerates dramatically. We see this pattern repeatedly in homes between Peninsula Boulevard and the bay side of town.
- Hurricane Sandy-era rushed repairs are failing now, twelve years later. Many crowns and caps were patched quickly after 2012’s flooding and wind damage; those emergency repairs used whatever materials were available and often sealed over deeper structural cracks. Annual cleanings in 11557 should include a post-Sandy repair audit - we know what to look for.
- Unreinforced multi-flue caps tear loose in nor’easters. When a cap goes airborne in a storm, it takes flue tile edges with it and dumps debris into the chimney. Compounding this, the oil soot and creosote buildup in Hewlett’s shared flues means any blockage creates a faster hazard than in single-fuel systems. Heavy-gauge, full-wrap caps with proper anchoring prevent this.
- Freeze-thaw cycling destroys windward mortar joints. Hewlett’s Atlantic exposure means more moisture penetration and more freeze-thaw damage than inland Nassau communities like Garden City or Mineola experience. The result is crown separation from the brick course below, a gap that looks minor from the ground but funnels gallons of water into the chimney structure every storm.
Pricing for Chimney Cap & Crown in Hewlett, NY
Here’s what a typical job costs in the 11557 market. These are upfront, no-surprise ranges - the number we quote is the number on the invoice.
| Service | Typical Range in Hewlett |
|---|---|
| Single-flue cap replacement (standard size) | $280-$420 |
| Multi-flue cap installation (heavy-gauge) | $550-$890 |
| Crown coating (sound structure, surface cracks) | $340-$580 |
| Partial crown repair (cut-and-pour sections) | $480-$760 |
| Full crown replacement with cap | $1,200-$1,850 |
What moves the needle: accessibility (steep roof pitch, height), whether we need custom fabrication for non-standard flue sizes, and the extent of hidden damage beneath failed Sandy-era repairs. Oil-wood shared flues sometimes require additional liner inspection, which we quote separately with your approval. Every estimate is free, and we apply our standing $50 off any repair over $250, plus a permanent 5% senior and veteran discount. Call (855) 950-3861 for an exact quote on your Chimney Repair - Hewlett.
We Also Serve Cities Near Hewlett
Our Chimney Cap & Crown crews work daily throughout the Five Towns and surrounding South Shore communities, including Chimney Cap & Crown in Hewlett and neighboring Woodmere, South Valley Stream, East Rockaway, and Lynbrook. The same live-answer phone, same upfront pricing, same 90-Day Done Right Promise applies whether you’re on the bay side or inland.
Serving Hewlett, NY - Our Local Coverage Area
We’re based in the Hewlett 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 Hewlett
Yes, and we recommend a heavy-gauge multi-flue cap with full-wrap anchoring, not a standard clip-on unit. The sustained nor’easter gusts off Reynolds Channel and Brosewere Bay will separate lightweight caps within a season or two, and once a cap goes, your shared oil-wood flue is exposed to direct rain and debris. We install Famco and Gelco wind-rated units rated for coastal exposure, secured to the crown with masonry anchors. Call (855) 950-3861 and we’ll spec the right cap for your roof pitch and exposure - estimates are free.
It needs inspection first, and we approach every Sandy-era repair with skepticism. Many 2012 patches used rapid-set materials over cracks that were never properly cleaned or undercut, and the salt-laden bay air has accelerated the deterioration hidden beneath. If the crown structure is sound with surface cracking only, Crown Coat sealant extends life significantly. If tapping reveals hollow areas or the patch is separating from original concrete, partial or full replacement is the honest recommendation. We document what we find with photos and give you a plain-English verdict. Call for a free post-Sandy audit.
Yes, and this is the most serious risk we encounter in Hewlett’s shared-flue chimneys. A missing or damaged cap allows rain to enter the oil flue, where it mixes with sulfurous soot to form sulfuric acid that corrodes clay flue tiles and degrades the chimney’s interior dimensions. Combined with creosote buildup from the wood fireplace above, this narrows the flue and can reverse draft under certain pressure conditions. We treat every cap call as a potential system safety issue and inspect the full flue interior with our Level-2 camera. Carbon monoxide is odorless and lethal - if your cap is damaged or missing, call (855) 950-3861 today.
Salt-laden bay air accelerates galvanic corrosion on standard steel caps by 30-50% compared to inland towns like Garden City or Mineola, and the constant moisture cycling means rust begins at fastener points and miter joints first. We see this on Hewlett chimneys within 5-7 years versus 10-12 years inland. That’s why we specify 304 or 316 stainless steel, or heavy-gauge galvanized with proper mill coating, for every coastal installation. The upfront cost difference is modest; the replacement cost difference is significant. We’ll show you the condition of your current cap on camera and explain what you’re buying.
A direct replacement of an existing cap typically does not require a permit in Nassau County, but crown repair or replacement involving structural concrete work may trigger a building department review depending on scope. We handle permit determination as part of our upfront assessment and pull any required permits ourselves - you don’t navigate Village of Hewlett or Town of Hempstead paperwork. If your job involves post-Sandy structural repair or a change in flue configuration, we’ll tell you before we start and include any permit costs in your fixed-price quote. Call (855) 950-3861 to schedule.
Written by Frank Calucci, Owner at Hearthstone Chimney Co., serving Hewlett and the Five Towns since 1984.