If your Greenwood Village chimney has blackened bricks, a strong smoke smell, or a draft that pulls air into your home, it’s past due for a professional sweep. Older brick homes in Aurora’s dry climate trap creosote faster, waiting until you see flames is too late. Schedule a sweep before winter to avoid chimney fires, which the Chimney Safety Institute of America calls the #1 cause of home fires in masonry chimneys.
1. What is a chimney sweep (and why does your Greenwood Village brick chimney need one more often than others?)
A chimney sweep is a deep cleaning of your flue, liner, and smoke chamber to remove creosote, a flammable tar that builds up from wood smoke. Greenwood Village homes, especially those built before the 1980s with brick chimneys, need sweeps more often because: - Aurora’s dry air accelerates creosote hardening (Stage 2 or 3 buildup is highly flammable). - Older brickwork lacks modern liners, so soot clings to porous mortar joints. - Mixed fuel use (wood + gas) creates a gummy residue that DIY rods can’t remove.
The Chimney Safety Institute of America recommends sweeping at least once a year for wood-burning fireplaces, but Greenwood Village’s historic homes often need bi-annual sweeps, especially after heavy use. If your chimney hasn’t been swept in over a year, assume creosote is already coating the flue. A professional sweep in Greenwood Village CO will use rotating brushes and vacuum systems to pull out debris, not just push it down where it can ignite. For homes with no liner, we also inspect for cracks in the brickwork that let carbon monoxide seep into your home, something a basic sweep won’t catch.
2. Sign #1: Your fireplace smoke smells like chemicals or burns your eyes, this isn’t normal ‘wood smoke’
If smoke from your Greenwood Village fireplace stings your eyes, smells like plastic, or leaves a chemical taste in the air, your chimney is overloaded with creosote. This isn’t just an annoyance, it’s a fire hazard. Here’s why: - Stage 2 creosote (tar-like, glossy) releases toxic fumes when burning. - Stage 3 creosote (hard, crusty) can ignite at 1,100°F, hotter than a typical fireplace. - Aurora’s high winds (especially near Chatfield State Park) can push smoke back down the flue if the draft is weak, trapping unburned gases.
What to do now: Stop using the fireplace immediately. Call a Greenwood Village chimney sweep to remove creosote before it hardens further. Our creosote removal guide for Aurora brick homes explains how professionals use high-pressure air and specialized tools to break it down. Ignoring this can lead to a chimney fire, which the National Fire Protection Association (NFPA) reports causes $125 million in property damage annually in the U.S.
3. Sign #2: Black soot stains appear on the fireplace mantel, ceiling, or walls, this means your flue is clogged
Black soot on your mantel isn’t just unsightly, it’s a direct sign your chimney isn’t drawing properly. In Greenwood Village’s older brick homes, this usually means: 1. Creosote is blocking 30–50% of the flue (reducing airflow by half). 2. The damper isn’t sealing tightly, letting cold air rush in and cool the fire. 3. Your chimney cap is missing or damaged, letting rain dilute the creosote into a sticky mess that clings to the flue walls.
Aurora-specific tip: If you’ve noticed soot stains after a windstorm, your chimney cap may have shifted. The EPA’s Burn Wise program warns that missing caps let debris and animals (like squirrels) block the flue, worsening the problem. Check our chimney cap repair guide for Aurora homes to see if this is your issue. A professional sweep will also check for hidden cracks in the brickwork, common in Greenwood Village’s 1920s–1950s homes, that let soot escape into your living space.
4. Sign #3: Your fireplace draft pulls air into the room instead of pushing smoke out, this is a dangerous blockage
If you light a fire and feel a cool breeze from the fireplace instead of warm air rising, your chimney has a negative draft. In older brick chimneys, this almost always means: - Creosote or debris is wedged in the flue, acting like a plug. - The chimney is too short (common in Greenwood Village’s post-war homes) to create proper updraft. - A cracked liner or missing crown is letting rainwater seep in, diluting the creosote into a sludge that clogs the flue.
Why this matters: A negative draft forces carbon monoxide (CO) back into your home. The U.S. Environmental Protection Agency the EPA reports that CO poisoning sends 50,000 people to the ER yearly. If you or pets experience headaches, nausea, or dizziness after using the fireplace, evacuate and call a chimney sweep immediately. Our Aurora CO safety guide covers how to test for CO leaks safely.
5. Sign #4: Rust stains or water leaks appear on your ceiling or walls, this means your chimney’s masonry is failing
Water stains on your ceiling or walls near the fireplace are never a plumbing issue, they’re a chimney leak. In Greenwood Village’s brick chimneys, leaks start when: - The crown (top of the chimney) cracks from freeze-thaw cycles (Aurora’s winters swing from -10°F to 50°F). - Mortar joints erode, letting rain seep into the flue. - A missing or damaged chimney cap lets water pool inside the flue, then drip down when the fire heats it.
What this leads to: - Creosote softens from moisture, turning into a flammable sludge. - Brick spalling (outer layers flaking off) weakens the chimney structure. - Mold growth in your attic or walls, damaging insulation and drywall.
Aurora’s climate makes this worse: Greenwood Village sits at 5,435 feet elevation, where snowmelt and spring rains combine with dry summer winds to accelerate masonry decay. Our full masonry inspection guide details how we repair crowns, repoint mortar, and install stainless steel liners to stop leaks permanently.
6. Sign #5: You hear popping, crackling, or roaring sounds, not the normal wood burning
A fireplace should crackle quietly as wood adjusts. If you hear: - Loud pops or bangs, creosote is igniting in the flue (a chimney fire). - Roaring or whistling, the fire isn’t burning efficiently, likely due to a blocked or improperly sized flue. - Squealing metal, your damper or liner is overheating from restricted airflow.
Greenwood Village’s older homes often have flues that are too small for modern fireplaces. The NFPA’s Standard 211 requires flues to be at least 8 inches wide for wood-burning fireplaces, but many pre-1970s homes have 6-inch flues, half the required size. This forces hot gases to slow down, increasing creosote buildup. A professional sweep will measure your flue and recommend a liner upgrade if needed. See our relining guide for historic Aurora homes for options that preserve your brickwork.
7. Sign #6: Animals (squirrels, birds, or raccoons) have nested in your chimney, this is a fire and health hazard
If you spot nesting material, droppings, or chewed debris around your chimney, wildlife has made it their home. In Aurora, this is most common in: - Older brick chimneys (easy to climb, loose mortar). - Chimneys near trees (like those in Greenwood Village’s older neighborhoods near the golf course). - Unused fireplaces (animals seek shelter in dead-air spaces).
Why this is dangerous: - Nesting material (leaves, twigs) ignites easily, causing chimney fires. - Animal droppings release ammonia and bacteria, contaminating your flue. - Squirrels chew through flue liners, creating gaps that let CO into your home.
What to do: Never try to remove animals yourself, they’ll panic and damage the chimney. Call a Greenwood Village chimney sweep to safely remove the nest and inspect for chewed liners or structural damage. Our wildlife removal and repair tips explain how we use one-way exclusion devices to keep animals out long-term.
8. Sign #7: Your chimney bricks are discolored, crumbling, or covered in white powder, this means acid rain damage
If your chimney bricks look blackened, pitted, or coated in white powder, sulfur from wood smoke has reacted with moisture to form sulfuric acid. This is common in Greenwood Village because: - Older homes burn untreated wood, which has higher sulfur content. - Aurora’s alkaline soil (from the South Platte River basin) accelerates brick erosion. - Missing chimney caps let rainwater pool, increasing acid exposure.
What this leads to: - Brick spalling (outer layers flaking off). - Mortar joint failure, letting soot and water enter your home. - Structural weakness, increasing the risk of collapse.
Solution: A masonry inspection (not just a sweep) is critical. We’ll check for: - Efflorescence (white powder) on bricks. - Soft or crumbling mortar (press a screwdriver into joints, if it sinks in, it’s failing). - Cracks wider than 1/8 inch (a sign of foundation settlement).
Our Aurora masonry repair guide covers how we repoint mortar, seal bricks, and install stainless steel liners to protect your chimney. Ignoring this can lead to a full chimney rebuild, costing $3,000–$10,000 for Greenwood Village homes.
| Service | Typical Cost Range | When Needed | Aurora-Specific Note |
|---|---|---|---|
| Basic Sweep (No Liner) | $120–$200 | Annually for wood-burning fireplaces | Older brick chimneys often need bi-annual sweeps due to creosote buildup. |
| Creosote Removal (Stage 2/3) | $250–$500 | After 1–2 years of skipped sweeps | Aurora’s dry climate hardens creosote faster: DIY rods won’t remove it. |
| Masonry Inspection + Repair | $300–$800 | If cracks, spalling, or water damage are found | Greenwood Village’s 1920s–1950s homes often need mortar repointing. |
| Chimney Liner Installation | $1,200–$3,000 | If flue is cracked or too small | Pre-1970s homes often have 6-inch flues, too small for modern fireplaces. |
| Wildlife Removal + Cleanup | $150–$400 | If animals (squirrels, birds) nest in the chimney | Aurora’s tree-lined neighborhoods attract wildlife. |
| Full Chimney Rebuild | $5,000–$15,000+ | If bricks are severely damaged or collapsed | Avoid this by inspecting annually, especially after storms. |
Frequently Asked Questions
My Greenwood Village chimney hasn’t been swept in 2–3 years. Is it safe to use until I schedule a sweep?
No. After two years without a sweep, your chimney likely has Stage 2 or 3 creosote, hard, flammable deposits that can ignite at 1,100°F. The Chimney Safety Institute of America reports that chimney fires double when sweeps are skipped. Stop using the fireplace immediately, crack a window, and call a Greenwood Village chimney sweep. Our Aurora creosote removal guide explains how professionals break down hardened creosote safely.
I see cracks in the mortar between my Greenwood Village chimney bricks. Should I fix them myself or call a pro?
Call a pro. DIY mortar repair often makes cracks worse because: - Old mortar is crumbly, new mortar won’t bond properly. - Cracks hide deeper structural issues, like foundation settlement. - Aurora’s freeze-thaw cycles will reopen poorly repaired joints. A licensed chimney sweep will repoint the mortar using heat-resistant, flexible compound that matches your chimney’s age. Our masonry repair guide shows how we restore brickwork while preserving historic integrity. Skipping this can lead to water damage, CO leaks, or even chimney collapse.
My Greenwood Village fireplace smells like gas even when it’s not on. Could this be a chimney issue?
Yes, but it’s not the chimney itself. A gas smell from a cold fireplace usually means: 1. Your gas line has a leak (call Aurora’s utility immediately). 2. Condensation in the flue is mixing with soot, creating a chemical odor. 3. A cracked heat exchanger (in gas fireplaces) is leaking combustion gases. If the smell persists after lighting the fire, evacuate and call a chimney sweep. We’ll inspect for blocked flues, damaged liners, or improper venting. Our Aurora chimney safety laws guide covers how to test for gas leaks safely.
How much does a chimney sweep cost in Greenwood Village, and why do older brick homes cost more?
A basic sweep for a Greenwood Village chimney runs $120–$250, but older brick homes often need $300–$600 because: - No liner = extra time to inspect brickwork and mortar. - Creosote buildup (from years of neglect) requires high-pressure air tools. - Masonry repairs (like repointing cracks) add $150–$400. Cost factors for your home: - Chimney height: Tall brick chimneys (common in Greenwood Village’s historic districts) take longer to clean. - Flue size: Older 6-inch flues cost more to sweep than modern 8-inch flues. - Accessibility: Chimneys behind skylights or in tight attics add $50–$150. See our Aurora chimney sweep cost guide for a breakdown by service type. We offer free estimates, call us before winter to avoid emergency pricing.