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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AfterFast, Reliable Chimney Cap & Crown Across St. Johns
Chimney cap and crown work in St. Johns is a moisture problem before it’s a fire problem. The prefabricated fireplace systems common in Nocatee, RiverTown, and Beachwalk fail from Florida humidity years before they’d ever fail from burning. A corroded chase cover leaks into the flue, rusts the damper shut, and turns a $300 cap replacement into a $2,500 flue liner job. We’re Emberly Chimney Cleaners, and we’ve been documenting this exact failure mode in St. Johns since our camera-scan inspection standard became the default for every home we serve. If you’re seeing rust flakes in the firebox or water staining at the ceiling, call us at (980) 580-8641 for a written price and camera-backed diagnosis.
Why Emberly Chimney Cleaners Is St. Johns’s Preferred Chimney Cap & Crown Company
St. Johns homeowners don’t call us because they burn 40 fires a winter. They call us because they bought a $700,000 Nocatee home in 2019, lit the fireplace twice, and found the damper seized with rust at year three. That’s a Florida failure, and it’s the one we’re built for. We operate under the Haven Standard, which means every visit in St. Johns includes a Level 2 camera-scan inspection and a documented photo record, per Clause 4. You see the corrosion with your own eyes before any repair is discussed.
Our technicians are background-checked, uniformed, and arrive with the license number visible on the page and the work order. Scheduling from our South Florida office coordinates local crews to St. Johns daily. When a tech is en route, you get a text. When the job is done, you get written scope, written warranty, and photos of every repair. If it isn’t done right, the 365-Day Done Right Promise means we come back and make it right. That’s a written guarantee, not a verbal one.
We also bring a Free Second Opinion on any written estimate. If you’ve got a quote from another chimney company for a crown repair or full cap replacement in St. Johns, we’ll review it and give you our read. No obligation. That’s how we’ve built the trust that keeps St. Johns calling us.
Our Chimney Cap & Crown Services in St. Johns
We focus on the jobs St. Johns’s housing stock actually requires. That means prefabricated chase systems, multi-flue caps, and custom fabrications for larger homes with two or three flues sharing one chase. Here’s what we handle under our Chimney Cap & Crown service line.
Cap Installation
A new cap on a St. Johns prefab fireplace typically runs $240-$380 installed, depending on flue size and access. We stock stainless steel caps from Olympia Chimney and Copperfield specifically for the 6-inch and 8-inch prefab flues dominant in the area’s 2000s-era construction. Installation includes sealing the liner joint and camera-verifying the cap seats true.
Cap Replacement
When a galvanized chase cover has corroded through, we replace it rather than patch it. Most St. Johns homes built since 2005 used galvanized steel factory covers because they were cheap. They fail at the corners first. A replacement custom stainless cap for a standard chase runs $420-$680 in St. Johns, including removal, fabrication, and installation. For larger chases or multi-flue setups, expect $700-$1,100.
Crown Repair
On true masonry chimneys in St. Johns’s older pockets, we see spalling crowns where Florida’s rain and humidity have worked into hairline cracks. Crack filling and resealing on a single-flue masonry crown runs $350-$550. Full crown rebuilds start around $900. We use Gelco sealants rated for Northeast Florida’s wet-dry cycling. For prefab chases, crown repair means resealing the chase-to-cap seam, not pouring concrete.
Crown Coating
Crown coating is the prevention step most St. Johns homeowners skip until the leak has already happened. A brush-on elastomeric coating seals hairline cracks and buys five to seven years before a rebuild is needed. Done before the rainy season, it’s a $275-$425 job. Done after water has pooled in the chase, it’s too late. We’ll tell you which one applies to your crown based on the camera footage, not on a guess.
What happens when you call
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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.
BeforeAfterTrusted Brands We Service in St. Johns
We work with materials from Famco, Olympia Chimney, and DuraFlex on most St. Johns cap and crown jobs. These aren’t generic parts. Famco’s galvanized and stainless chase covers are direct-fit for the prefab systems we see in RiverTown and Beachwalk, and we keep the common sizes on our trucks. DuraFlex liners and connector kits matter for homes where corrosion has already reached the flue. When you need a custom cap fabricated for a wide chase or an offset flue, we measure and build to spec, then document the fit with photos before we seal it.
Common Chimney Cap & Crown Problems We See in St. Johns Homes
- Galvanized chase covers corroding from the underside. The top looks solid from the ground, but condensation trapped inside the chase has been eating the pan from below. By the time you see rust staining at the chase top, the flue liner has usually been getting wet for at least a season.
- Rusted dampers seized shut. Rain water passing a failed cap drips straight down onto a cast-iron or steel damper. In a St. Johns home where the fireplace burns twice a year, that damper rusts in place and the fireplace becomes unusable until it’s freed or replaced.
- Crown seam separation on prefab chases. The metal expands and contracts through Florida’s hot-wet cycles, and the seam between cap and chase opens enough to let water run behind the siding and into the firebox. Caulk fails. Seams open. It’s the same failure we see year after year.
- Multi-flue caps sized wrong by the builder. On larger St. Johns homes with a gas furnace venting through the same chase as the fireplace flue, the original cap sometimes barely covers both terminations. Rain drives sideways into the uncovered flue. A properly sized multi-flue cap solves this, but it has to be measured, not guessed.
Pricing for Chimney Cap & Crown in St. Johns, FL
We publish our ranges because St. Johns homeowners research before they call and want the number on the page. Here’s what you can expect:
- Standard cap replacement: $240-$380 installed
- Custom stainless chase cover: $420-$680 for a single-flue chase, $700-$1,100 for multi-flue or oversized chases
- Crown crack repair (masonry): $350-$550
- Full crown rebuild: starts around $900
- Crown coating: $275-$425
What moves the number in St. Johns is roof pitch, chase height, and whether the flue has multiple terminations. Access on a three-story Nocatee home costs more than a one-story ranch in Fruit Cove. You’ll get a written price before any work starts, on every job, no exceptions. That’s Clause 1 of the Haven Standard and it’s been our rule since 2009. Call (980) 580-8641 for your free estimate.
We Also Serve Cities Near St. Johns
Our crews cover St. Johns and the surrounding Northeast Florida region regularly, including St. Johns, Jacksonville, Miami, Tampa, and Orlando. If you’re on the edge of St. Johns County or just want to confirm we handle your particular development, call and ask. Scheduling for all of these areas runs through the same number: (980) 580-8641.
Serving St. Johns, FL - Our Local Coverage Area
We’re based in the St. Johns 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 St. Johns
Every year, and the reason is condensation. A multi-flue cap over a chase that carries both a fireplace flue and a furnace flue traps warm exhaust inside a metal box. In St. Johns’s humidity, that box sweats. The cap’s underside rusts where you can’t see it, and the furnace flue’s clearance becomes a leak path. We recommend an annual Level 2 camera inspection for any multi-flue chase in St. Johns, with cap replacement every 10 to 15 years depending on material. If your cap is galvanized and older than 2015, have it looked at before rainy season. Call (980) 580-8641 to book that inspection.
Because in St. Johns, it’s not the fire that kills a cap. It’s the humidity. A galvanized chase cover corrodes from trapped moisture even when the fireplace never gets lit. The corrosion starts on the underside, works through at the corners, and then lets rain into the chase. Homeowners in RiverTown and similar post-2010 developments see this on fireplaces they’ve used a handful of times. We’ve removed caps that looked perfect from the ground and were nearly gone underneath. That’s why every inspection includes camera footage: you see what we see before agreeing to any repair. Call (980) 580-8641 for a documented inspection.
It depends on what the crown is. On a factory-built prefab system, the “crown” is usually the top pan of the chase cover itself, not a separate poured concrete cap. If only the sealant seam has failed and the metal pan is still sound, we can strip and recoat that seam without replacing the whole cap. If the pan has corroded through, patching is a temporary fix and we’ll tell you clearly that replacement is the right call. In St. Johns, where humidity traps condensation inside the chase, we see far more replacement-than-repair situations than in drier climates. The camera footage will show you exactly which category your chase falls into.
Undersizing from the builder. Many larger St. Johns properties, particularly in Nocatee and along County Road 210, have two or even three fireplaces plus a furnace flue sharing one large chase. The original cap was sometimes sized for the chase opening but not for the actual flue terminations inside it. Rain enters at an angle, bypasses the cap, and drops straight down an uncovered flue. A custom cap has to be measured with the flue layout on paper, not just matched to the chase footprint. We fabricate to fit each flue termination and then photograph the finished cap from above so you can see the coverage yourself. Call (980) 580-8641 if you suspect your multi-flue cap is too small.
Yes, because the cap’s job isn’t about how the fireplace burns today. It’s about whether water is entering the chase right now. A rusted chase cover is already letting moisture through. The water pools around the flue, rusts the damper, and eventually compromises the flue liner. By the time the fireplace stops working, the repair is a liner replacement, not a cap. In St. Johns, where humidity accelerates every stage of that process, a rusted cap is a repair you make this season. Replacing a chase cover now is a $420-$680 job. Replacing a rusted-out flue liner later is a $2,500-$4,500 job. We’ll document the condition on camera and give you a written recommendation, not a sales pitch.
Written by Corrine Halstead, Owner at Emberly Chimney Cleaners, serving St. Johns with documented chimney inspections and written pricing since our founding in 2009.