Fast, Reliable Chimney Cap & Crown Across Bohemia
A chimney cap and crown repair in Bohemia typically costs between $275 and $1,850 depending on whether you need a simple coating, a cap replacement, or full crown rebuild, and most jobs are completed in a single visit. We carry DuraFlex and Copperfield caps on our trucks, so Bohemia homeowners aren’t waiting on parts. If you’re seeing water stains on your ceiling near the fireplace, or chunks of mortar on your roof, call Sterling Chimney Cleaning Bridgeport at (888) 975-6389 — we’ll get someone out fast.
We’ve been driving down Veterans Memorial Highway to Bohemia for years, and we know the housing stock here: those solid 1950s ranches off Lakeland Avenue, the Cape Cods near Connetquot River State Park, the split-levels tucked behind Bohemia Crossing. These homes were built with single-flue masonry chimneys meant to handle both oil heat and a wood-burning fireplace, and after fifty to seventy years, their crowns and caps are showing it. Gary Murphy handles these calls personally — he’s the owner and the lead technician, so the person quoting your job is the one doing the work.
Why Sterling Chimney Cleaning Bridgeport Is Bohemia’s Preferred Chimney Cap & Crown Company
More than 1,200 homeowners have trusted us across our service area, and our 4.7 average star rating from 1,234 verified reviews reflects fourteen years of doing one trade well. In Bohemia specifically, we’ve built repeat business through the Lakeland area, along Smithtown Avenue, and in the neighborhoods near Bohemia Road — homeowners who initially called for a sweep and now have us back for cap and crown work because they know who shows up.
Our response time to Bohemia is typically same-day or next-day. We’re familiar with the Town of Islip’s permit requirements and inspection protocols, which matters because an increasing number of our Bohemia calls come from homeowners whose gas conversion was flagged during a real-estate transfer or renovation permit review. Gary doesn’t subcontract — he’s on your roof, measuring your flue, checking your crown for spalling. That accountability is why our Chimney Cap & Crown team gets called back.
Our Chimney Cap & Crown Services in Bohemia
Cap Installation
New cap installation in Bohemia runs $275–$550 for a standard stainless single-flue unit, and $650–$1,200 for a multi-flue cap on a larger chimney. Most of the homes we see off Orville Drive and in the Lakeland section have shallow roof pitches that offer little protection from wind-driven rain — a properly fitted cap with adequate overhang is essential. We size caps to your exact flue opening, accounting for any damper hardware that might interfere with seating.
Cap Replacement
Cap replacement in Bohemia often reveals deeper problems: rusted dampers, cracked crown edges, or spalling brick where the old cap leaked for years. We charge $325–$675 for replacement with removal of the failed unit, and we’ll tell you before we start if the crown beneath needs attention too. On a recent call in the Lakeland area of Bohemia, we replaced a cracked custom copper cap on a 1960s ranch whose original oil-to-gas conversion had left the old clay liner exposed. We installed a DuraFlex multi-flue cap to seal the crown and prevent moisture intrusion, which had been causing efflorescence and interior water stains.
Crown Repair
Crown repair in Bohemia addresses what we see constantly on 1960s and 1970s construction: concrete crowns poured too thin, without proper overhang or drip edge, now cracked and letting water straight into the chimney structure. A partial crown repair runs $450–$850; full crown rebuilds range $1,100–$1,850. Bohemia’s inland location means real freeze-thaw cycles — not the moderated coastal temperatures you get closer to the Sound. Water gets in, freezes, expands, and your crown starts shedding chunks. We see this especially on homes near Connetquot where mature tree cover keeps chimneys shaded and slower to dry after rain.
Crown Coating
Crown coating is our most cost-effective service for Bohemia homeowners whose crowns are cracked but structurally sound — typically $350–$575. We use flexible, breathable coatings that bridge hairline cracks and shed water without trapping moisture inside the masonry. For a 1960s ranch chimney in Bohemia, this can add five to ten years of service life to a crown that’s otherwise deteriorating from decades of acidic condensate exposure. The coating goes on after thorough cleaning and any minor tuckpointing, and it’s a same-day process.
Multi-Flue Cap
Multi-flue caps cover the entire chimney top, protecting multiple flues and the crown itself. In Bohemia, where many homes originally had one flue for the oil furnace and another for the fireplace, these caps are often the right solution even after gas conversion leaves you with a single active flue. The unused flue still needs protection from water and animal intrusion. Multi-flue caps run $650–$1,200 installed, depending on chimney dimensions and whether we need to build up the crown for proper mounting.
Custom Cap
Custom caps — copper, black galvanized, or specialty sizes — run $850–$1,650 in Bohemia. These make sense for homeowners who want matched aesthetics on a visible chimney, or for non-standard flue configurations we see on some of the area’s custom 1960s builds. Copper develops that green patina over time, which actually fits the mature landscaping and established character of neighborhoods near Bohemia Road. We template on-site and fabricate through our Copperfield partnership, with typical turnaround of one to two weeks.
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 Bohemia
We install DuraFlex, HeatShield, and Copperfield materials — the brands specified by chimney professionals, not pulled off a retail shelf. For Bohemia homeowners, this means we don’t order parts that sit in a warehouse for three days while your crown leaks. We stock common cap sizes, crown coating compounds, and flashing materials on every truck. If your job needs something custom, our supplier relationships get it fast. Fourteen years in one trade means we’ve learned which products hold up to Suffolk County’s freeze-thaw cycles and which ones fail inside two winters.
Common Chimney Cap & Crown Problems We See in Bohemia Homes
- Acidic condensate corrosion. Many Bohemia homes that swapped oil boilers for gas in the 2000s–2010s are still venting the new gas appliance through the old oil flue without relining. The oversized clay liner produces corrosive condensate that attacks mortar joints and weakens the crown from below. We spot this on inspection calls constantly — the crown looks fine from the roof, but tap it and you hear hollow separation.
- Freeze-thaw spalling on uncoated crowns. Bohemia’s genuine inland freeze-thaw cycle — colder than coastal Long Island — turns absorbed moisture into expanding ice. Original crowns from the 1960s and 1970s were rarely coated or properly cured. Chunks flake off, exposing fresh surface area, accelerating the cycle. Heavy late-season nor’easters push wind-driven rain horizontally into these gaps.
- Damaged damper assemblies preventing cap seating. Original damper frames from Bohemia’s postwar construction are commonly rusted shut or warped after decades of heat cycling. A cap can’t seal properly against a warped damper, and the gap becomes a highway for rain, leaves, and squirrel access. We check this on every cap call — replacing the cap without addressing the damper is a waste of your money.
- Real-estate transfer surprises. Town of Islip inspectors are increasingly flagging improper venting configurations during home sales and renovation permits. We’ve taken calls from Bohemia homeowners who need crown and cap work completed within days to clear a closing contingency. The underlying issue is often the unlined gas conversion, but the visible problem — the failed crown or missing cap — is what stops the sale.
Pricing for Chimney Cap & Crown in Bohemia, NY
| Service | Typical Range in Bohemia | Most Common Price Point |
|---|---|---|
| Standard stainless cap installation | $275 – $550 | $395 |
| Cap replacement with removal | $325 – $675 | $485 |
| Crown coating (hairline cracks, sound structure) | $350 – $575 | $450 |
| Crown repair (partial rebuild) | $450 – $850 | $625 |
| Multi-flue cap installation | $650 – $1,200 | $875 |
| Custom copper or specialty cap | $850 – $1,650 | $1,150 |
| Full crown rebuild | $1,100 – $1,850 | $1,425 |
What moves you within these ranges? Crown dimensions, accessibility (steep roof pitches near Connetquot cost more in labor), whether we need to rebuild deteriorated brick at the crown base, and if your flue requires relining to meet current code. We don’t quote over a vague description — Gary Murphy inspects in person, shows you photos from the roof, and gives you a written estimate before any work starts. Estimates are free. Call (888) 975-6389 to schedule.
We Also Serve Cities Near Bohemia
We regularly run cap and crown calls to Ronkonkoma, Holbrook, Central Islip, and Holtsville — the same central Suffolk corridor with similar postwar housing stock and the same freeze-thaw and conversion-related failure patterns. If you’re in one of these neighboring communities and found this page, the pricing and service details above apply to you too. Call (888) 975-6389 and we’ll route you from our next Bohemia-area dispatch.
Serving Bohemia, NY — Our Local Coverage Area
We’re based in the Bohemia 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 Bohemia
Gas conversions often leave the original oversized oil flue unlined, producing corrosive condensate that weakens mortar and cracks crowns from the inside out. The existing cap may have been removed during conversion and never properly replaced, or it may no longer seal against a deteriorated crown. Call (888) 975-6389 for a free inspection — we’ll check the flue condition and cap fit together.
A crown coating adds a waterproof, flexible membrane that bridges hairline cracks and stops water infiltration without the cost of full rebuild. For a 1960s ranch with sound structural brick but surface deterioration from decades of acidic exposure, this is often the right middle-ground repair. The coating breathes, so trapped moisture escapes instead of building up behind a sealed surface.
Custom copper caps match non-standard flue configurations and visible chimney locations where appearance matters, and copper’s natural patina complements the mature, established character of Bohemia’s older neighborhoods. Beyond aesthetics, a custom fit eliminates the gaps and workarounds that cause leaks with off-the-shelf sizes. We template on-site for exact fit.
A multi-flue cap is necessary if your chimney has multiple flues — even unused ones — because each opening needs protection from water and animal intrusion. Many Bohemia homes retain a second flue from their original oil-furnace installation, and covering only the active flue leaves the other exposed to the same freeze-thaw and moisture damage that ruined your crown. The multi-flue design also shields the crown itself.
Town of Islip inspectors increasingly require proper venting configuration — including intact crowns, sealed caps, and lined flues — before signing off on renovation permits or real-estate transfer certificates. We’ve completed cap and crown work on tight deadlines for Bohemia homeowners whose closing was contingent on clearing an inspection flag. Call (888) 975-6389 if you’re facing a deadline — we understand the urgency and document our work for permit submission.
Written by Gary Murphy, Owner at Sterling Chimney Cleaning Bridgeport, serving Bohemia and central Suffolk County since 2010.