Level 1 sweep and inspection to the NFPA 211 annual standard - flue, crown, cap, and flashing checked and photographed
Chimney sweep logs do not sweep chimneys. They loosen some creosote - which then falls where a brush and vacuum still have to collect it.
Before
After
Before
AfterFast, Reliable Chimney Cap & Crown Across Farmingdale
A chimney cap and crown repair in Farmingdale typically costs between $350 and $1,200 depending on whether you need a simple cap reset, a full crown rebuild, or a multi-flue stainless system. Most jobs are completed in a single visit with no-hassle upfront pricing agreed before we start. Call (934) 348-4832 for a free estimate and camera inspection.
We’ve been dispatching crews to Farmingdale from our New York City office for decades, and we know the chimneys here. The Cape Cods along Main Street, the ranches tucked between the Southern State and the LIRR tracks, the split-levels near Bethpage Road - they share a common story. Built in the 1950s and 60s for oil heat, many now run gas boilers through flues that were never properly resized. That matters for your crown and cap because an oversized flue runs cooler, condenses more, and sends acidic moisture straight into your mortar joints. We’re not guessing. We see it weekly.
Our Chimney Cap & Crown team carries Gelco crown coating, Olympia Chimney multi-flue caps, and the hardware to fix flashing failures that show up as ceiling stains after nor’easters roll through. When water gets past the crown, it doesn’t stay in the chimney. It finds your drywall.
Why Hearthstone Chimney Co. Is Farmingdale’s Preferred Chimney Cap & Crown Company
We’ve served local communities for over 42 years. That longevity means something in a village where homeowners have lived in the same house for thirty years and remember every contractor who did them wrong. We’re still here because we document what we find, explain it plainly, and fix it without drama.
Our Level-2 camera inspections end with photos you can see and a plain-English verdict. No jargon, no scare tactics. If your crown can wait a season, we’ll say so. If the cap is the only problem and the flue is sound, we’ll tell you that too. The 90-Day Done Right Promise covers every job in writing - if it’s not right, we make it right, no paperwork and no arguing.
A live person answers our phones 24 hours a day, 7 days a week. Not a callback queue. Not an app. A real person who can schedule your Farmingdale appointment or connect you with Russell Haines if you have questions about what our tech found.
Our background-checked, uniformed technicians complete most jobs in a single visit. We don’t leave you waiting for parts or coming back next week. The number on your estimate is the number on your invoice. A square deal.
Our Chimney Cap & Crown Services in Farmingdale
Cap Installation
New cap installation in Farmingdale runs $280-$550 for a standard single-flue stainless unit, or $650-$1,100 for a multi-flue system that covers the entire crown. We size caps to your flue, not to what’s in the truck. For the mid-century homes near the Farmingdale LIRR station with 8-by-8 or 8-by-12 flue openings, a too-small cap is worse than none at all - wind drives rain straight down the gap. We measure, we fit, we secure with proper fasteners rated for South Shore gusts.
Cap Replacement
Cap replacement in Farmingdale is often urgent. The original cap from a 1960s install has rusted through, or a Sandy-era patch job has finally given up, or a nor’easter last winter lifted it and set it back crooked. A cap that’s even slightly displaced creates a funnel effect that channels water into the flue. Replacement typically costs $320-$680 depending on flue count and whether the flue tile itself needs repair. We carry Gelco and Olympia Chimney caps on our trucks for same-visit installation.
Crown Repair
Crown repair is where Farmingdale’s housing stock shows its age. The concrete wash that caps your chimney is not structural masonry - it’s a sacrificial layer meant to shed water. After 60-80 years of freeze-thaw cycles and salt air, it’s cracked, spalled, or missing entirely. Crown repair runs $450-$850 for a standard rebuild with proper slope and drip edge. For crowns with minor cracking but solid structure, we apply a Gelco crown coating system that seals hairline cracks and restores waterproofing for roughly $380-$520. We were called to a 1953 Cape Cod near the Farmingdale LIRR station after the homeowner saw a ceiling stain in the upstairs hall following a nor’easter. Our tech found the original clay tile crown spider-webbed with cracks, the cap twisted a few degrees off the flue, and the flashing lifted; water had been tracking down the outside of the flue and staining the ceiling. We reset the flashing, rebuilt the crown with a Gelco coating system, and set a new Olympia Chimney stainless multi-flue cap, and the next rain stayed outside where it belonged.
Crown Coating
Crown coating is the preventive play that saves Farmingdale homeowners from a full rebuild. If your crown has surface cracking but hasn’t delaminated, a professional coating application adds 10-15 years of life. We use HeatShield and Gelco systems, applied to a clean, prepped surface with proper curing time. Cost runs $380-$520. The catch: it only works if the crown is structurally sound. We verify that with a camera inspection before we quote. No coating over rot.
Multi-Flue Cap
Multi-flue caps cover the entire chimney top, protecting both the flues and the crown between them. They’re essential for Farmingdale homes with two or more appliances venting into the same chimney - common in houses with a basement boiler and a first-floor fireplace. A multi-flue cap from Olympia Chimney or Famco runs $650-$1,100 installed, including proper screening to keep out squirrels and the starlings that nest in South Shore chimneys every spring.
Custom Cap
Custom caps are rare but necessary for non-standard flue configurations - oversized flues, exterior chimneys with unusual projections, or historic homes in the older village center near Main Street and Conklin Street where standard sizes won’t fit. Custom work starts around $850 and is quoted after measurement. We fabricate to spec, never “close enough.”
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 Farmingdale
We work exclusively with professional-grade materials: Gelco for crown coatings and standard caps, Olympia Chimney for multi-flue and stainless systems, and Famco for specialty flashing and custom fabrications. These aren’t builder-grade substitutes from a big-box store. We stock common sizes on our trucks so Farmingdale repairs don’t wait on shipping. When your ceiling stain is spreading, that matters.
Common Chimney Cap & Crown Problems We See in Farmingdale Homes
- Post-storm cap displacement. Post-hurricane and nor’easter wind events along the South Shore lift or crack chimney caps, and the fast patch jobs from the Sandy era are now failing and letting water straight into the flue. We find caps sitting crooked, fasteners sheared off, or the mesh screen torn and stuffed with leaves.
- Marine air corrosion. Salt-laden marine air and year-round humidity corrode flashing and eat mortar joints, so the crown and the roof-to-chimney transition give out long before the flue tile itself. The galvanized flashing from a 1960s install is often paper-thin by now.
- Condensation damage from oversized flues. The common Farmingdale combo of a 6- or 7-inch clay flue serving a converted gas boiler with no stainless liner insert lets condensation pool on the crown and wash out mortar, accelerating spalling of the brick above the roofline. The crown cracks because the flue below it is running wrong.
- Sandy-era patch failures. After Hurricane Sandy’s 2012 strike on Nassau County’s South Shore, many homeowners got emergency tar-and-patch crown repairs that were never meant to last. A decade later, those patches are crumbling and the original damage underneath has worsened.
Pricing for Chimney Cap & Crown in Farmingdale, NY
Here’s what cap and crown work actually costs in the Farmingdale market:
| Service | Typical Range |
|---|---|
| Single-flue cap installation | $280 - $550 |
| Cap replacement (standard) | $320 - $680 |
| Multi-flue cap installation | $650 - $1,100 |
| Crown coating (preventive) | $380 - $520 |
| Crown repair/rebuild | $450 - $850 |
| Custom cap (fabricated) | $850+ |
| Level-2 camera inspection | $89 (Seasonal Tune-Up special) |
What moves the needle: flue count, crown size, whether scaffolding is needed for a tall chimney, and whether we find hidden damage once the old cap is off. We don’t guess from the driveway. Every quote follows a camera inspection with photos you can see. The $89 Seasonal Tune-Up includes that inspection. Seniors and veterans save 5% on every job. Call (934) 348-4832 for your exact number - estimates are free, and we don’t charge to look.
We Also Serve Cities Near Farmingdale
Our crews work the full Nassau-Suffolk border area, including Chimney Cap & Crown in Farmingdale and the surrounding towns: Old Bethpage, Bethpage, Wyandanch, and Plainview. Same trucks, same technicians, same upfront pricing. If you’re near the Nassau County line and your chimney’s showing wear, we’ll come look.
Serving Farmingdale, NY - Our Local Coverage Area
We’re based in the Farmingdale 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 Farmingdale
Because the underlying problem isn’t the crown itself. In Farmingdale’s mid-century housing stock, the most common cause is an oversized clay flue serving a converted gas boiler with no stainless liner insert. The flue runs too cool, condensation forms, and that acidic moisture attacks the mortar joints and the crown from below. Freeze-thaw cycles and salt air do the rest. A new crown without fixing the flue sizing is a temporary patch. We check flue dimensions and draft performance before we rebuild. Call (934) 348-4832 for an exact quote - estimates are free.
No. A crooked cap is a failed cap. Even a few degrees off-center creates a gap that funnels wind-driven rain straight into the flue. Post-Sandy, we see this constantly in Farmingdale - the cap didn’t blow off, but the fasteners loosened or the flue tile cracked underneath, letting the cap settle askew. Water gets in. Ceiling stains follow. We reset or replace, and we check the flue tile while we’re up there. Call (934) 348-4832 for an exact quote - estimates are free.
Could be either. Or both. The stain’s location tells part of the story: a stain on the ceiling directly below the chimney breast often means water is entering at the crown or cap and tracking down the flue exterior. A stain at the roofline or in a corner suggests lifted flashing. In Farmingdale, with our wind exposure and the age of original flashing, we commonly find both failing at once. Our camera inspection pinpoints the entry point before we quote a fix. Nothing is recommended without photo evidence you can see for yourself. Call (934) 348-4832 for an exact quote - estimates are free.
If your chimney has a 6- or 7-inch clay tile flue serving a modern gas boiler, yes - or the chimney may not be safe to operate. Nassau County’s oil-to-gas conversion wave left thousands of Farmingdale homes with this exact mismatch. The oversized flue can’t maintain draft, so exhaust gases including carbon monoxide can backdraft into the house. Condensation destroys the mortar from inside. We inspect with a camera, measure the flue, and give you a plain-English verdict. Sometimes the fix is a liner; sometimes the appliance needs to be direct-vented instead. We don’t sell you what you don’t need. Call (934) 348-4832 for an exact quote - estimates are free.
Look for three things from the ground: missing or displaced cap, visible cracks in the crown wash, and rust stains on the brick below the roofline that suggest flashing failure. Don’t climb up. Chimney work involves heights and unstable surfaces, and the inspection that matters requires a camera inside the flue. If you see any of the three warning signs, or if it’s been more than a year since your last professional inspection, schedule a Level-2 camera inspection before you light the first fire. In Farmingdale, with our salt air and storm history, annual inspection isn’t cautious - it’s standard. Call (934) 348-4832 for an exact quote - estimates are free.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Farmingdale and local communities since 1984.