Fast, Reliable Chimney Cap & Crown Across Jericho
Chimney cap and crown repair in Jericho typically runs $280–$890 depending on whether you need a simple cap installation or full crown rebuild, and most jobs are completed in a single visit. In Jericho’s mid-century neighborhoods—Birchwood Park, the Glen Cove Road corridor, and the areas off Jericho Turnpike near the 11753 zip—deteriorating crowns and missing caps on abandoned oil flues are the hidden problem most homeowners don’t discover until water damage appears. We’ve been driving to Jericho from our New York City base for 17 years, and Robert Garcia handles these jobs personally as lead technician, not a subcontractor. If you’re seeing water stains on your chimney breast or hearing debris tumble down an unused flue, call us at (866) 884-9512 for a free, no-obligation estimate.

Why Apex Chimney Cleaning Greater New York Is Jericho’s Preferred Chimney Cap & Crown Company
Our Chimney Cap & Crown team knows Jericho’s housing stock intimately. We’ve worked on hundreds of the split-levels, center-hall colonials, and expanded ranches built during Nassau County’s 1952–1975 suburban boom, and we’ve documented over 1,096 customer outcomes with a 4.7-star average—many from right here in the 11753 and 11853 zip codes. Robert Garcia arrives as the lead technician on every Jericho job, so you’re getting the owner who can authorize repairs on the spot, not a crew leader waiting for callbacks from a dispatcher.
Response time to Jericho averages same-day or next-day during peak season, because we understand that crown cracks discovered during a cold snap can’t wait. Our familiarity with Jericho’s specific failure patterns—abandoned oil flues left uncapped, freeze-thaw damage from 15–25 annual cycles, moisture intrusion on seasonally used fireplaces—means we diagnose faster and fix it right without unnecessary upsells.
Our Chimney Cap & Crown Services in Jericho
Cap Installation
New cap installation in Jericho runs $180–$340 for a standard single-flue galvanized or stainless steel unit, or $450–$780 for a custom multi-flue cap covering both an active fireplace flue and an abandoned oil flue. On a center-hall colonial in Jericho’s Birchwood Park section, we found a crown cracked 360° around the fireplace flue while the neighboring abandoned oil flue had a missing cap, causing water to funnel down and spall the liner. We installed a custom multi-flue copper cap covering both flues and applied a crown coating from Gelco to seal the crack, preventing further freeze-thaw damage. Most Jericho homes need this dual-flue solution, not a single cap.
Cap Replacement
Replacing a rusted, wind-damaged, or improperly sized cap in Jericho costs $220–$490, with multi-flue replacements at the higher end. Jericho’s inland location spares chimneys the salt-air corrosion that eats hardware on the South Shore, but the humid continental climate still destroys caps through condensation cycling and ice buildup. We size replacements to the actual flue opening—never a generic big-box guess—and we stock Gelco and Copperfield caps for common Jericho flue dimensions, so you’re not waiting weeks for a special order.
Crown Repair
Crown repair in Jericho typically costs $340–$620 for crack sealing, joint reconstruction, and slope restoration to direct water away from the flue. This is our most called-for service in Jericho, and for good reason: decades of freeze-thaw cycles in Jericho’s climate cause mortar crown joints to separate, exposing the terra cotta liner beneath. On split-levels along Jericho Turnpike and the Glen Cove Road corridor, we regularly find crowns that were poured flat or with inadequate overhang, accelerating deterioration. Robert assesses whether the crown can be salvaged or needs full replacement—no guesswork, no pressure.
Crown Coating
Crown coating application in Jericho runs $280–$450 and adds 10–15 years of waterproof protection to a structurally sound crown. We use professional-grade flexible coatings—Gelco’s CrownCoat and HeatShield’s crown sealant systems—that accommodate the thermal expansion and contraction Jericho chimneys experience through those 15–25 annual freeze-thaw cycles. This isn’t paint; it’s a breathable, elastomeric barrier that seals hairline cracks before they propagate. We recommend it for any Jericho chimney with a crown showing early deterioration but solid structural integrity.
Multi-Flue Cap
Multi-flue cap installation in Jericho ranges $520–$890 and is often the correct solution for the dual-flue chimneys dominating this market. Jericho’s housing stock is dominated by the 1950s–1970s Long Island suburban build-out, producing a high concentration of colonial and split-level homes whose original masonry chimneys were designed with dual flues—one for the oil burner, one for the fireplace. As the vast majority of these homes converted to gas heat over subsequent decades, the old oil-fired clay-tile flue was frequently decommissioned in place rather than properly relined or capped, leaving a deteriorating liner sharing the same chimney stack as the active fireplace flue—a hidden structural and carbon-monoxide risk unique to this era and housing type. A multi-flue cap seals both flues simultaneously, stopping water intrusion and animal entry through the abandoned flue while protecting the active one.
Custom Cap
Custom caps for unusual flue configurations or heritage aesthetics in Jericho run $680–$1,200. We’ve fabricated custom solutions for expanded ranches near the Wheatley Hills border and for homeowners in the 11853 zip who want copper or black stainless to match exterior trim. Robert measures on-site and sources from Copperfield and Olympia Chimney’s custom lines, with typical turnaround of 5–7 business days.

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.
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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 Jericho
We install professional-grade materials from DuraFlex, HeatShield, Gelco, and Copperfield—the same lines commercial contractors specify, not the thin-gauge hardware store caps that warp in two seasons. For Jericho customers, we maintain stock of common multi-flue cap sizes and Gelco crown coating materials, which means most repairs don’t involve waiting for a distributor shipment from the mainland. When we quote a job, we’re quoting materials we know perform in Long Island’s climate, installed by a technician who’s seen how they age on chimneys like yours.
Common Chimney Cap & Crown Problems We See in Jericho Homes
- Crowns on abandoned oil flues go unrepaired, allowing moisture to enter and crack the shared chimney structure between flues. In Jericho’s classic split-level and colonial chimney stacks, the abandoned oil-flue tile liner—cracked and unlined after the conversion to gas—sits immediately adjacent to the fireplace flue within the same brick chase; a sweeping crew that only inspects the “active” fireplace flue will miss the compromised dividing wall between the two, which can channel combustion gases into living spaces.
- Decades of freeze-thaw cycles in Jericho’s humid continental climate cause mortar crown joints to separate, exposing the terra cotta liner. Jericho sits inland on Long Island with a humid continental climate that delivers 15–25 meaningful freeze-thaw cycles per winter, which progressively fractures mortar joints and clay liner sections in aging masonry stacks. Unlike the South Shore communities a few miles away, Jericho’s chimneys avoid heavy salt-air corrosion but accumulate significant moisture intrusion through deteriorated crowns on homes whose owners often use fireplaces only seasonally.
- Seasonal fireplace use leaves crown defects unnoticed for months, letting water accumulate and spall clay tile liners. Jericho consists almost entirely of mid-century single-family homes—split-levels, center-hall colonials, and expanded ranches—built during the post-WWII Nassau/Suffolk suburban boom of roughly 1952–1975. These homes overwhelmingly feature original brick-and-mortar chimneys with segmented terra cotta flue liners now 50–70 years old, prone to cracked joints and spalled tile from decades of thermal cycling.
- Improperly sloped or flat crowns pool water directly above the flue opening. Many Jericho homes from the 1960s and 1970s were built with crowns that lack the minimum 2-inch overhang and proper slope away from the flue; water sits, freezes, and pries the crown away from the brick course beneath it. Robert checks slope and overhang on every inspection—it’s a detail that separates a lasting repair from a repeat call.
Pricing for Chimney Cap & Crown in Jericho, NY
| Service | Typical Range in Jericho |
|---|---|
| Standard single-flue cap installation | $180 – $340 |
| Cap replacement (existing flue) | $220 – $490 |
| Multi-flue cap installation | $520 – $890 |
| Custom cap (copper, special sizing) | $680 – $1,200 |
| Crown coating (preventive) | $280 – $450 |
| Crown repair (cracks, joint work) | $340 – $620 |
| Full crown replacement | $780 – $1,450 |
What moves you within these ranges? Crown size and accessibility (steep roof pitches near Wheatley Hills add labor), whether we’re working around one flue or two, and whether the abandoned oil flue requires additional sealing or liner stabilization. We provide upfront, itemized quotes before any work begins—call (866) 884-9512 for your free estimate.
We Also Serve Cities Near Jericho
Our chimney cap and crown crews work throughout central Nassau County, including Hicksville to the south, Syosset to the east, Plainview to the southeast, and New Cassel to the west. Many of these communities share Jericho’s mid-century housing stock and dual-flue chimney legacy, and we apply the same diagnostic rigor whether we’re on a split-level off Jericho Turnpike or a colonial in Syosset’s Oakwood Drive area.
Serving Jericho, NY — Our Local Coverage Area
We’re based in the Jericho 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 Jericho
The abandoned oil flue is often your chimney’s most vulnerable point. In Jericho’s dual-flue chimneys, the decommissioned oil flue typically has a missing or rusted cap, a deteriorated clay liner, and no proper seal—creating an open path for water, animals, and combustion gases to enter the shared brick chase. That moisture damages the structural wall between flues, and if the dividing tile cracks, carbon monoxide from your active fireplace or gas appliance can migrate into living spaces. Call (866) 884-9512 and Robert will inspect both flues, not just the one you use.
Every 12 months, ideally before the first freeze. Jericho’s 15–25 annual freeze-thaw cycles accelerate crown deterioration, and because many Jericho homeowners use fireplaces only seasonally, crown defects go unnoticed until water has already spalled liner tiles or damaged interior finishes. We recommend a pre-winter inspection that includes both the active fireplace flue and the abandoned oil flue. Estimates are free—call (866) 884-9512 to schedule.
Poured Portland cement with a proper slope and overhang remains the standard for full crown replacements, but the critical factor is the waterproof coating applied over it. We use Gelco’s flexible crown sealants and HeatShield’s elastomeric systems because they accommodate thermal movement without cracking—essential in Jericho’s climate where daily winter temperature swings stress rigid materials. For caps, we specify stainless steel or copper from Copperfield and Olympia Chimney over galvanized, which corrodes faster in humid conditions. Robert can explain the trade-offs for your specific chimney during a free estimate.
We can repair crowns with limited cracking and solid structural integrity; full replacement becomes necessary when the crown has separated from the brick course beneath it, when rebar corrosion has caused spalling, or when the crown was improperly poured without adequate thickness (common on 1960s Jericho builds). On a recent split-level near the Glen Cove Road corridor, Robert salvaged a crown with 360-degree cracking using joint reconstruction and Gelco coating; a neighboring home with a 2-inch-thick crown and exposed rebar required full replacement. The inspection determines the path—call (866) 884-9512 for an honest assessment.
Yes, and for most Jericho colonials with dual flues, it’s the correct solution. A multi-flue cap covers both the active fireplace flue and the abandoned oil flue with a single engineered unit, eliminating the need for two separate caps and ensuring no gap exists between them where water can enter. We size these to your chimney’s exact dimensions and pitch, using stainless steel or copper from Copperfield’s multi-flue line. Robert has installed dozens across Jericho’s Birchwood Park and Jericho Turnpike neighborhoods—call (866) 884-9512 for a measurement and quote.
Ready to protect your Jericho chimney from another season of freeze-thaw damage? Call (866) 884-9512 today for a free, no-obligation estimate. Robert Garcia will inspect your cap and crown personally, explain what you’re actually looking at, and give you a straightforward price for the fix that lasts.
Written by Robert Garcia, Owner at Apex Chimney Cleaning Greater New York, serving Jericho and central Nassau County since 2007.