Protect your home from fire and carbon monoxide risks with expert chimney sweeping, inspections, and repairs—serving Denver and the Front Range since 2012
Comprehensive chimney sweep for Denver homes and businesses.
Remove dangerous creosote buildup and soot to prevent chimney fires and improve airflow in your Denver home.
Comprehensive inspections to spot hidden damage, blockages, or code violations in your Denver chimney before they become costly problems.
Fix cracks, gaps, or structural damage to restore your chimney’s safety and efficiency—from tuckpointing to stainless steel liners.
Ensure your gas fireplace’s venting system is leak-free and up to Denver’s safety codes to prevent carbon-monoxide poisoning.
Stop water damage in its tracks by repairing or replacing cracked chimney crowns and chase covers—Denver’s freeze-thaw cycles will exploit any weakness.
Restore the beauty and structural integrity of your brick chimney with expert tuckpointing and masonry repairs—keeping Denver’s historic homes safe and stunning.
We hold ourselves to the highest standards so you can hire with total confidence.
Denver’s fire code requires annual chimney inspections for wood-burning appliances, but most homeowners skip this step—until a chimney fire forces the issue. Our technicians know Denver’s specific amendments, from clearance requirements for metal chimneys in new builds to the stricter rules for homes in wildfire-prone areas like Genesee. We’ll ensure your chimney meets current standards, not just the bare minimum.
Creosote buildup isn’t just unsightly; it’s a ticking time bomb. In Denver’s dry climate, even a 1/8-inch layer can ignite from a stray spark, sending flames through your flue and into your attic. We’ve seen $50,000+ fires start from what homeowners thought was ‘just a little soot.’ Regular sweeping removes this hazard before it becomes catastrophic.
Gas fireplaces, wood stoves, and even pellet stoves can leak carbon monoxide if their venting systems are compromised. Denver’s tightly sealed, energy-efficient homes trap CO inside, making leaks deadlier. Our inspections include CO testing to ensure your family isn’t breathing in this odorless killer.
We’ve seen homeowners seal chimneys with silicone caulk (a fire hazard), stuff gaps with insulation (a moisture trap), or ignore cracks until they require a full rebuild. Our certified technicians use industry-approved materials and methods, so your ‘quick fix’ doesn’t turn into a $10,000 emergency down the road.

Denver’s unpredictable weather—from dry Chinook winds to sudden snow squalls—puts extra stress on your chimney, and most homeowners don’t realize how quickly hidden damage can turn into a safety hazard. At Lizard Chimney Inc, we don’t just sweep away soot; we inspect for cracks, blockages, and creosote buildup that could spark a chimney fire during Denver’s coldest nights. Our safety-first approach means checking flue liners, crowns, and flashing to ensure your system meets the latest International Residential Code standards, giving you peace of mind when the temperature drops. We treat every chimney like it’s our own family’s—because in Denver, where fireplaces are a winter staple, cutting corners isn’t an option.
"Lizard Chimney saved our home from a potential disaster. They found a hairline crack in our flue that our previous sweep missed—Denver’s strict codes require immediate attention, and they handled it before it became a $20K fire risk. Professional, thorough, and honest. Highly recommend!"
"We had a gas fireplace that kept shutting off, and the tech discovered a venting issue that could’ve caused carbon monoxide buildup. Fixed it the same day and explained everything in plain English. No upselling, just great service. Will use them for all future chimney needs."
"After a chimney fire scare, I called Lizard Chimney for an emergency inspection. They were at my door within 2 hours, identified the problem, and gave me a fair estimate for repairs. Their workmanship warranty gave me peace of mind—I know my family is safe now."
"Living in a 1920s home in Aurora, I was worried about hidden chimney damage. Lizard Chimney’s tuckpointing work blended perfectly with my brickwork, and their attention to detail was impressive. They even helped me navigate Denver’s historic preservation guidelines. Truly exceptional."
"I’ve used other sweeps in Denver, but none were as thorough as Lizard Chimney. They found a nest of raccoons in my chase cover—something I didn’t even know was a problem—during a routine sweep. Their same-day service and fair pricing set them apart from the rest."
"After a winter of heavy use, my chimney was in rough shape. Lizard Chimney repaired the crown and replaced the chase cover, preventing water damage during Denver’s unpredictable freeze-thaw cycles. Their team was clean, professional, and left my home spotless. Will definitely call them again."
Expert local advice for Denver homeowners.
Is your Denver chimney safe? Learn the 7 warning signs it needs repair or relining, local costs, and why ignoring creosote buildup or cracks near Wash Park could spark a fire.
Read more →Learn the three Denver chimney inspection levels, what’s really inspected, and why skipping one could cost you more than a chimney sweep.
Read more →Learn the true costs, seasonal timing, and safety-first steps for a Denver chimney sweep. Avoid hidden risks and code violations with expert local advice.
Read more →Call (720) 784-0430 or use our online scheduler to book a chimney sweep in Denver. We offer same-day service for emergencies like suspected chimney fires or CO leaks, and free estimates for all repairs. No hidden fees—just honest pricing and a clear timeline.
Our technician arrives on time (Denver traffic is unpredictable) and performs a Level 1 inspection to identify cracks, blockages, or code violations. We’ll show you the findings on-site with photos and explain what’s urgent versus what can wait. Transparency is our policy—no upselling, just solutions.
Using state-of-the-art vacuums and brushes, we remove every trace of creosote, soot, and debris from your flue. Then we test your draft, check for leaks, and verify your chimney meets Denver’s safety codes. If repairs are needed, we’ll provide a written estimate before starting work.
We treat your home like our own—covering floors, wiping surfaces, and hauling away debris. After your chimney sweep, we’ll send a digital report with photos, recommendations, and a reminder for your next inspection. Your satisfaction is guaranteed, or we’ll make it right.
Proudly serving Denver and these nearby communities.
Wait at least 24 hours after your sweep to let any residual dust settle. We recommend scheduling your appointment in early fall—before the first hard freeze—to avoid last-minute scrambles when the first snow hits. Most Denver homeowners book between September and November, but we can squeeze in emergency sweeps if you’ve noticed smoke backing up or a sooty smell.
Denver’s high altitude (5,280 feet) means wood burns less efficiently, leaving behind thicker creosote deposits that ignite at lower temperatures. Add in our dry air, which dries out masonry faster, and you’ve got a recipe for rapid buildup. We recommend annual sweeps for wood-burning fireplaces, while gas systems can go 2–3 years—unless you’ve had recent renovations.
Absolutely. A single hailstorm can dent or dislodge a chimney cap, leaving your flue exposed to debris and animals. We inspect caps for cracks or warping during every sweep and replace them if they’re compromised. Even a small gap can let critters nest inside your chimney—a problem that spikes in spring when Denver’s temperatures rise.
That ‘if it’s not smoking, it’s fine.’ Smoke is just the visible sign of a problem—carbon monoxide is odorless and can leak through tiny cracks in a flue liner. We’ve found deadly CO leaks in chimneys that looked pristine from the outside. Always get a Level 2 inspection if you’ve had recent storms or if you’re buying/selling a home.
Unless you’re comfortable climbing onto a roof in 30°F weather and navigating Denver’s unpredictable winds, leave it to the pros. A DIY sweep risks missing hidden damage or improperly disposing of soot, which is classified as a hazardous material. Our team is certified by the Chimney Safety Institute of America (CSIA) and carries liability insurance—protection you won’t get with a $20 brush from the hardware store.
A clean, inspected chimney reassures buyers that the fireplace is safe and up to code—especially important in older Denver homes where original chimneys may not meet modern standards. We provide a detailed report with photos that you can share with your realtor. In competitive markets like Wash Park or Highlands, this can be the difference between a quick sale and a price negotiation.
January and February, when homeowners use fireplaces daily to combat the cold. Creosote buildup from weeks of use can ignite when temperatures drop and flues contract. We’ve seen chimney fires spike after Denver’s first major snowstorm, when people rush to use their fireplaces without checking for blockages. Schedule a mid-season sweep to stay safe.
Yes—especially if you’ve had renovations, a chimney fire, or if you’re buying a home. A Level 2 inspection uses a camera to check the entire flue, including areas hidden from view. Denver’s building codes require it for any property transfer, and we’ve found structural issues in unused chimneys that could collapse if reignited.
Fast response, upfront pricing, and workmanship guaranteed. Get your free estimate today.