Sweep & inspection
Caps & crowns
Flue relining
Masonry repair
Gas fireplace serviceLevel 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.
Fast, Reliable Chimney Sweep Across Key Biscayne
Most chimney sweeps in Key Biscayne run between $189 and $349, and the work usually takes 60 to 90 minutes. If your fireplace has been sitting unused for a few seasons, or you can’t remember the last time the flue was checked, the salt air here has likely been working on your damper and liner the whole time. Ashby Chimney Miami sends background-checked, uniformed technicians to Key Biscayne homes for a sweep that includes camera inspection and a written price before any work starts. Call (850) 787-8597 to book an appointment.
We work all over the island, from the condo towers near the Rickenbacker Causeway to the older ranch homes off Crandon Boulevard and the waterfront properties along Mashta Drive. Key Biscayne’s exposure to ocean spray means chimneys corrode faster here than they do even five miles inland. A house on Harbor Drive and a house in West Miami can have completely different flue conditions, and the difference usually comes down to salt. Our Chimney Sweep team knows what that corrosion looks like and how to document it before recommending any repairs.
Why Ashby Chimney Miami Is Key Biscayne’s Preferred Chimney Sweep Company
We’ve been running chimney sweeps since 2002, and the homes on Key Biscayne have taught us a lot. This island has a particular mix: 1950s and 1960s ranch-style construction alongside modern luxury builds, all sitting in tropical maritime air that punishes exposed metal and masonry. Homeowners here tend to call us with the same three words: “It’s been years.” The fireplace stopped getting used, the damper got stuck, and the chimney quietly collected nests, debris, and corrosion out of sight.
Our Key Biscayne customers get the same treatment every time: a live person answers the phone, we show up in the arrival window we committed to, and the technician hands you a written price before touching the fireplace. No price doubling at the front door. That’s the Kingswell Way, and it applies to every job on the island, whether you’re off Fernwood Road or near the Village of Key Biscayne. Nathan Corliss, who leads Ashby Chimney Miami, insists on camera evidence for every repair recommendation. You see what we see. You decide with real information.
We also back every repair with a written guarantee. If a covered repair fails inside the guarantee period, we return and correct it at no extra charge. That’s the 365-Day Done Right Promise, and it’s included on every job, not sold as an add-on.
Styles & brands we work with
Chimney Sweep Certified in Key Biscayne
Chimney Sweep Certified work in Key Biscayne means more than brushing soot out of a flue. It means inspecting the full system as we clean, because homes here rarely show problems through the firebox alone. A standard sweep typically runs $189 to $249, and a deeper cleaning with creosote removal or camera inspection runs $269 to $349. We remove soot and creosote from the flue liner, the smoke chamber, and the damper, then document the condition of everything with our Level 1 or Level 2 camera gear.
Creosote Removal
Creosote is the tar-like residue left behind when wood or gas combustion gases cool inside the flue. In Key Biscayne’s humidity, creosote can stay sticky for months, which makes it hold onto salt particles from the ocean air. We see first-degree creosote in chimneys that were swept recently, but homes that haven’t been serviced in years often show second- or third-degree accumulation. Third-degree creosote is hard, shiny, and concentrated, and it burns hot enough to fuel a chimney fire. We remove it with rotary tools when needed and show you the results on camera.
Annual Sweep
An annual sweep is the simplest way to keep a Key Biscayne chimney safe, even if you only use the fireplace two or three times a year. The National Fire Protection Association recommends a sweep at the start of the burn season, but on an island this humid, late summer or early fall is when it matters most. By then, a season of heavy rain and salt spray has had time to work on the cap, crown, and damper. One visit catches small problems before they become written-off repairs.
Gas Fireplace Cleaning in Key Biscayne
Gas Fireplace Cleaning in Key Biscayne costs between $149 and $249, and the job covers more than vacuuming the glass. Many Key Biscayne homes converted wood-burning fireplaces to gas decades ago, often without reworking the original masonry flue. The old clay-tile liner, the cast-iron or steel damper, and the mortar joints all remain in place, and they all react to salt air. We clean the burner, the logs, the glass, and the venting, then camera-check the flue for hidden damage the previous homeowner never addressed.
Soot Removal for Gas Systems
Gas fireplaces don’t produce wood smoke, but they do generate soot when burners get clogged or air-to-gas ratios drift off. In oceanfront homes, that soot mixes with fine salt crystals and adheres to the inside of the glass and the flue walls. Our techs clean the entire gas path and test the burner assembly, so you’re not fighting a film that comes back in two weeks.
Damper and Flue Check
The damper is usually the first thing to fail in a Key Biscayne gas fireplace. A rusted damper that won’t fully open restricts draft and can pull carbon monoxide back into the room. We inspect the damper, lubricate or replace it when needed, and document its condition before and after. For gas units, a working damper and a clean flue are safety items, not cosmetic ones.
Trusted Brands We Service in Key Biscayne
We stock and install parts from chimney-trade manufacturers that hold up to Key Biscayne’s salt air better than generic fittings. Famco dampers, Olympia Chimney caps and crowns, and Copperfield chase covers are the ones we reach for when ocean exposure is the problem. If your fireplace has a Gelco chimney liner or a Famco damper, our techs are trained on the specific clearances and installation requirements for those brands. We keep common replacement parts on the truck, so if a component fails during a clean, we can often fix it the same visit instead of scheduling a second trip to the island.
For a deeper look at everything we handle, see our full Chimney Sweep in Key Biscayne service overview.
See the difference
Before
After
Before
After
Before
AfterCommon Chimney Sweep Problems We See in Key Biscayne Homes
- Rusted dampers from salt air. Famco and older steel dampers seize shut after years of ocean spray and humidity. We usually find them fully open or fully frozen, neither of which is safe for burning.
- Hidden bird nests and debris in rarely used flues. Key Biscayne’s warm winters mean birds nest in chimneys almost year-round. A nest above the damper blocks draft and pushes smoke into the house.
- Spalling clay-tile flue liners. The original clay tiles on 1960s ranch homes break down faster here because salt crystals expand inside the porous tile surface during humid summers.
- Salt-caked mortar joints and crowns. The crown is the flat concrete cap on top of the chimney. In oceanfront homes, we see crowns that have crumbled to gravel from years of salt crystallization.
Pricing for Chimney Sweep in Key Biscayne, FL
A standard sweep in Key Biscayne runs $189 to $249. A Level 2 camera inspection with the sweep runs $269 to $319. Gas fireplace cleaning runs $149 to $249 depending on the condition of the burner and the flue. What changes the price is usually one thing: how long the chimney has been ignored. Years of solidified creosote, a damper rusted into place, or a nest blocking the flue all add labor and materials, and we show you the reason for each line item on video before you approve anything. We give a written price before work starts, and that number matches the invoice at the end. Call (850) 787-8597 for a free estimate.
We Also Serve Cities Near Key Biscayne
Ashby Chimney Miami also covers Miami, Hialeah, and North Miami Beach. If you own a home in a nearby community and need the same camera-backed, written-price chimney work, call us at (850) 787-8597. Our scheduling team coordinates from our Miami office, and crews serve Key Biscayne locally throughout the week.
Serving Key Biscayne, FL - Our Local Coverage Area
We’re based in the Key Biscayne 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 About Chimney Sweep in Key Biscayne
Salt air corrodes metal and deteriorates porous masonry faster than inland air ever will, so your damper and flue liner are likely showing rust or spalling even if the fireplace was last used years ago. Salt crystals get into the pores of clay tiles and mortar joints, expand with humidity changes, and break the surface apart. A camera inspection shows exactly how far the damage goes. Call (850) 787-8597 to schedule one.
Yes, and arguably you need one more than someone who burns weekly. Unused fireplaces on the island collect nests, dead vegetation, and salt-caked debris that block the flue. When you finally light a fire, all of that obstruction works against your draft and can push smoke and gases back inside. We sweep and camera-check rarely used chimneys before that first fire goes in.
Third-degree creosote is the hard, glossy, tar-like layer that forms when creosote repeatedly heats and cools without being removed, and Key Biscayne’s moisture keeps first-degree creosote sticky long enough to build into second- and third-degree fast. It’s concentrated fuel, and it’s the stage most likely to ignite into a chimney fire. We remove it with rotary tools and show you the before and after on camera. Call (850) 787-8597 if you suspect buildup.
Yes, and we do it carefully. Many 1950s ranch homes on Key Biscayne have original clay-tile flues and masonry fireboxes that predate the gas conversion. We clean the gas components and the flue without chiseling, grinding, or disturbing the original brick. Our techs work around the existing masonry and document everything they touch so the structure stays intact.
Because the island has a specific problem with upsells on rusted dampers and spalling flue liners, and camera evidence is the only way to tell a minor repair from a full relining. We do not recommend any fireplace repair without first showing you the problem on screen. You’ll see the rust, the crumbling tile, or the cracked crown with your own eyes, and then you decide. For an honest assessment, call (850) 787-8597.
Contact Ashby Chimney Miami at (850) 787-8597 to schedule your chimney sweep in Key Biscayne. We answer live, 24/7, and we’ll give you a written price before any work begins.
Written by Nathan Corliss, Owner at Ashby Chimney Miami, serving Key Biscayne and surrounding areas since 2002.