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.
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AfterOlympia Chimney Chimney Cap & Crown in Mount Vernon: What to Know First
We provide independent Olympia Chimney chimney cap and crown service in Mount Vernon, with most jobs completed in a single visit and upfront pricing agreed before we start. A standard cap replacement runs $280-$450, crown repair $350-$650, and full crown rebuilds $800-$1,400 depending on accessibility and flue count. This page is for homeowners who already have Olympia Chimney components on their stack and want a technician who knows the product line, not a generalist guessing at the parts. Call (914) 246-5794 - a live person answers, 24 hours a day.
How Olympia Chimney Products Fail - and How We Fix Them
- Olympia Chimney Gelco-style stainless caps: crevice corrosion at the weld seams. The 304-grade shells hold up well in most of Westchester, but Mount Vernon’s proximity to Long Island Sound means salt air accelerates pitting at the corner joints, especially on homes south of Gramatan Avenue. We spot this during our camera inspection and either re-weld with 316L filler or source a replacement cap with fully seam-welded construction rather than spot-welded.
- Olympia Chimney multi-flue caps: improper overhang causing crown wash erosion. The popular multi-flue models with a 1-inch overhang shed water too close to the crown edge. In Mount Vernon’s freeze-thaw cycles, that runoff works its way under the crown lip and spalls the concrete within three to five winters. We extend the overhang to 2 inches minimum or install a drip-edge retrofit that throws water clear of the masonry.
- Olympia Chimney standard mesh screens: clogging with catalpa and maple debris. The 5/8-inch mesh that ships standard on most Olympia Chimney caps is fine for pine needles but packs solid with the broad leaves common in Mount Vernon’s older neighborhoods, especially around Fleetwood and Chester Heights. We upgrade to 3/4-inch mesh or install a removable screen frame the homeowner can knock clean from the ground with a pole.
- Olympia Chimney crown wash: hairline cracking from thermal shock. The factory crown coating is a cementitious wash, not true concrete, and it cures brittle. When a Mount Vernon homeowner runs a gas insert during a January cold snap, the crown surface can swing sixty degrees in an hour. We strip the wash and apply a flexible crown coat, or pour a proper 4-inch reinforced concrete crown with a formed drip edge.
- Olympia Chimney chase covers on factory-built chimneys: pan sag and reverse pitch. The galvanized chase covers that came standard on 1990s Olympia Chimney factory-built units have a known sag point at the center rib. Water pools, rusts through from the underside, and rots the chase framing. We fabricate a replacement in 24-gauge stainless with a raised center and cross-break, pitched to the corners where we install true scuppers, not just cutouts.
Our Olympia Chimney Chimney Cap & Crown Process
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Call and schedule. A live person answers, asks whether you have a single flue or multi-flue setup, and books a Level-2 inspection with camera. We do not quote blind over the phone.
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Arrival and diagnosis. Our technician arrives in a marked van, uniformed and background-checked. We run a camera up the flue, photograph the crown from the roof, and show you the footage on a tablet before any work is discussed.
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Parts decision. If your cap is an Olympia Chimney original still under parts warranty, we explain what’s covered and what is not. If the warranty has expired, we source either an OEM replacement or a compatible aftermarket cap from Gelco or Famco, depending on lead time and your preference. We never install builder-grade substitutes.
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The repair. For crown work, we grind out cracks to sound concrete, apply a bonding agent, and rebuild with Portland-based mix or a flexible polymer crown coat for smaller jobs. For cap replacement, we verify flue diameter and draft requirements, then secure with stainless fasteners, not sheet-metal screws that back out.
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Testing and documentation. We run a smoke pellet or draft gauge to confirm proper draw, then email you photos, a plain-English verdict, and the 90-Day Done Right Promise in writing.
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Cleanup and payment. We haul away the old cap or crown debris. You pay the number on the estimate, not a penny more.
What Olympia Chimney Chimney Cap & Crown Costs in Mount Vernon
These are real ranges for Olympia Chimney jobs we’ve completed in Mount Vernon, not national guesses:
- Single-flue cap replacement (OEM or quality aftermarket): $280-$450
- Multi-flue cap replacement: $450-$750
- Custom fabricated cap for non-standard flue spacing: $650-$950
- Crown crack repair with flexible coating: $350-$550
- Partial crown rebuild (up to 2 linear feet of damage): $550-$850
- Full crown removal and pour: $800-$1,400
- Chase cover replacement on factory-built unit: $700-$1,100
What moves the price: roof pitch and accessibility (steep slate on a Mount Vernon Victorian costs more than a ranch with composite shingles), number of flues, whether the existing fasteners have seized and require extraction, and if the crown has settled out of level and needs reshimming. We give you the full number before booking, and that is the number on the invoice. Call (914) 246-5794 for a free estimate - we serve Mount Vernon and the surrounding communities.
Why Mount Vernon Homeowners Call Hearthstone Chimney Co. for Olympia Chimney Work
We’ve been answering the phone with a live person for over 42 years, and we plan to be here when your next chimney needs attention. The 90-Day Done Right Promise covers every cap and crown job in writing - if it’s not right, we come back, no paperwork, no arguing. Our technicians are background-checked, uniformed, and trained on Olympia Chimney’s product line as well as DuraFlex, HeatShield, and Gelco systems, so we’re not guessing when we diagnose your stack. Most jobs finish in a single visit. Russell Haines, who learned the trade at Los Angeles Trade-Technical College and has spent the better part of two decades working chimneys across Westchester, still reviews the tricky ones personally. If it needs doing, we’ll tell you. If it doesn’t, we’ll tell you that too.
FAQs
No. Installing a third-party cap or having crown work done by an independent technician does not void the original appliance warranty, though it may affect parts-only coverage on the cap itself if the defect is in the cap material. We document our work with photos so any warranty claim you make with Olympia Chimney is supported. Call (914) 246-5794 if you want us to review your paperwork before we start.
Most single-flue replacements take 90 minutes to two hours from ladder set to cleanup. Multi-flue caps or jobs where the existing fasteners have rusted solid may run three hours. We complete most jobs in a single visit. Call (914) 246-5794 to schedule - estimates are free.
We can source OEM Olympia Chimney caps when they’re in stock, or we can fabricate a matching profile in stainless from Gelco or Famco. The aftermarket caps we use are professional-grade, not builder-grade, and we match flue diameter and mesh size to maintain proper draft. You’ll see photos of the proposed replacement before we order.
Not always. Cracks under 1/8 inch with no spalling or water staining below can often be sealed with a flexible crown coat that bridges the gap as the concrete breathes. We make that call with camera evidence you can see, not a sales pitch. If the crown is cracked through, sloped toward the flue, or missing chunks, we recommend removal and a proper pour. Call (914) 246-5794 and we’ll show you exactly what we’re looking at.
Annually, before burning season. Mount Vernon’s freeze-thaw cycles and the leaf load from mature trees mean caps and crowns take a beating. A quick camera inspection in September catches crown cracks while they’re still cheap to fix and verifies your cap mesh is clear. We offer an $89 Seasonal Tune-Up that includes this check. Call (914) 246-5794 to book.
Written by Russell Haines, Owner, Hearthstone Chimney Co. at Hearthstone Chimney Co., serving Mount Vernon and nearby areas.