If you’re seeing soot stains on your ceiling or walls, smelling a strong, acrid odor when lighting your fireplace, or noticing smoke billowing back into your home, your chimney needs a sweep now. Broomfield’s dry air and older homes (especially near the foothills) make creosote buildup worse, don’t wait until you see flames in the fireplace. A professional chimney sweep costs far less than a chimney fire repair.
What’s the real deal with chimney sweeps, and why Broomfield’s cold snaps turn them from ‘nice to have’ into ‘non-negotiable’?
A chimney sweep is a thorough cleaning of your flue, smoke chamber, and fireplace to remove creosote, a flammable tar-like substance that builds up from burning wood. Broomfield’s dry, windy winters and high-elevation air (especially in neighborhoods like Evergreen or near the foothills) accelerate creosote buildup, turning your chimney into a tinderbox. The Chimney Safety Institute of America CSIA warns that unchecked creosote is the leading cause of chimney fires in Colorado. If you’ve ever burned green or unseasoned wood (a common mistake in Broomfield’s humid summers before winter prep), you’re doubling the risk. Local chimney sweeps use rotating brushes and vacuum systems to clear creosote safely, something a DIY rod can’t match. Skipping a sweep means rolling the dice on your home’s safety, and your wallet.
Your fireplace smells like chemicals or gas when lit, what does this mean?
A sharp, acrid smell (like burning plastic or gasoline) when you light your fireplace isn’t just ‘part of the process.’ It’s a sign of incomplete combustion, often caused by a clogged flue or creosote buildup blocking airflow. In Broomfield, this happens more often in older homes (pre-1990s) with unlined chimneys, where moisture seeps in and reacts with soot. The National Fire Protection Association NFPA lists blocked flues as a top cause of carbon monoxide poisoning. If you also feel dizzy or nauseous near the fireplace, turn off the fire immediately, open windows, and call a chimney sweep before using it again. A professional can check for blockages, cracks, or even animal nests (common in Broomfield’s rural-adjacent areas like Coal Creek Canyon). Our crew uses cameras to inspect flues, something you can’t do with a flashlight.
Smoke is pouring back into your home instead of up the chimney, is this normal?
No. Smoke backdrafting is a clear sign your chimney isn’t drawing properly, usually due to creosote clogs, a cracked flue liner, or even a collapsed damper. Broomfield’s strong winds (especially near open spaces like the Broomfield Enterprise or the foothills) can also disrupt drafts if your chimney isn’t properly capped. The EPA’s Burn Wise program EPA recommends checking your damper first, if it’s stuck or rusted, that’s an easy fix. But if the problem persists, you need a sweep and an inspection. A blocked chimney forces smoke (and dangerous gases like carbon monoxide) into your home. Learn how to spot other draft issues before they become a health hazard.
You see soot stains on your ceiling or walls, how serious is this?
Soot on ceilings or walls isn’t just unsightly, it’s a fire hazard. In Broomfield, where many homes have vaulted ceilings or open floor plans (common in newer developments like The Orchards), soot spreads faster. The Chimney Safety Institute of America CSIA states that visible soot means your chimney’s efficiency has dropped by 20% or more, increasing creosote buildup. If the soot is black and powdery, it’s likely from incomplete combustion. If it’s sticky or glossy, you’ve got stage 2 creosote, a highly flammable goo that can ignite at 1,100°F. Local sweeps use high-powered vacuums to remove soot safely, but you’ll also need to check your wood-burning habits. Burning only seasoned hardwoods (like oak or maple) reduces soot. See our guide to safe wood burning for Broomfield’s climate.
Your chimney has a strong musty or animal odor, what’s living in there?
A musty smell or the unmistakable stink of animal urine means your chimney is a buffet for critters. Broomfield’s mix of urban and wildland areas (like the nearby Rocky Mountain Arsenal Wildlife Refuge) attracts birds, squirrels, and even raccoons. The NFPA NFPA reports that animal nests block 15% of chimney fires. If you hear scratching or rustling, or find fur, feathers, or droppings in your fireplace, your chimney is occupied. Our crew removes nests safely, but you’ll also need a sweep to clear the creosote and debris left behind. Pro tip: Install a stainless steel chimney cap with mesh screening to keep animals out. Avoid other DIY fixes that attract pests.
Your chimney is leaking water or you see rust stains, is this an emergency?
Water damage is the silent killer of chimneys, especially in Broomfield’s freeze-thaw cycles. Rust stains on your masonry or water dripping into your fireplace mean your chimney isn’t waterproofed. The U.S. Environmental Protection Agency EPA warns that moisture accelerates creosote buildup and corrodes flue liners. If you see cracks in the mortar or bricks, or if water pools at the base, you need repairs before the next rainstorm. Learn how Broomfield’s climate worsens water damage. A chimney sweep can’t fix leaks, but they’ll spot the damage during an inspection. Request a free estimate for waterproofing and repairs, ignoring this leads to costly structural damage.
Your chimney is older than your house, what hidden risks does that create?
Broomfield has no shortage of historic homes (like those in the Broomfield Historic District) with chimneys built in the 1920s or earlier. Older chimneys often lack proper liners, have deteriorated mortar, or were built with subpar materials. The Chimney Safety Institute of America CSIA recommends annual inspections for homes over 20 years old. If your chimney predates your house, it’s likely never been relined or reinforced. Signs of trouble include: - Crumbling bricks or mortar (check for loose sections with a screwdriver). - Visible cracks wider than 3/16 inch (a gap a pencil can fit through). - A chimney that’s leaning or sinking (a classic problem in Broomfield’s heavy clay soil). Our crew inspects for these issues during every sweep. If your chimney is a fire risk, we’ll recommend repairs before it collapses, or worse, catches fire. See our guide for older-home owners.
| Service | Typical Cost Range | When to Schedule | Local Note |
|---|---|---|---|
| Basic Chimney Sweep (Wood-Burning) | $120–$200 | Annually (or after 4–5 cords of wood) | Broomfield’s dry air speeds up creosote buildup, don’t wait until you see soot. |
| Gas Fireplace Inspection | $80–$150 | Every 2 years (or if you smell gas) | Older homes near Broomfield’s gas lines need extra checks for leaks. |
| Creosote Removal (Stage 2) | $250–$400 | Immediately if you see glossy black buildup | Stage 2 creosote is highly flammable, don’t delay. |
| Chimney Inspection (Level 2) | $150–$250 | Before winter or after a fire | Required for homes with visible damage or animal activity. |
| Waterproofing & Repairs | $500–$2,000+ | If you see rust, cracks, or leaks | Broomfield’s freeze-thaw cycles worsen water damage, act fast. |
| Animal Removal & Debris Cleanup | $150–$300 | If you find nests or droppings | Common in rural-adjacent areas like Coal Creek Canyon. |
Frequently Asked Questions
You light your fireplace a handful of times a year, so does that mean you can skip the sweep? The answer might surprise you.
Yes. Even light use creates creosote. Broomfield’s dry air means creosote dries faster, turning into a flammable crust. The Chimney Safety Institute of America CSIA recommends sweeping at least once a year, even for occasional users. If you’ve burned any wood this season, schedule a sweep before winter. Costs start at $120 for a basic sweep, far cheaper than a chimney fire repair.
My chimney looks fine, but my gas fireplace smells like sewer gas, what’s wrong?
Sewer-like odors in a gas fireplace usually mean a blocked flue or cracked heat exchanger. Broomfield’s natural gas lines (supplied by Platte River Power Broomfield, CO) can introduce moisture or debris. Turn off the fireplace immediately and call a chimney sweep to inspect the flue. Never ignore this, it can indicate carbon monoxide leaks. Our crew checks gas lines and flues for safety hazards.
I found a small amount of creosote, can I clean it myself with a brush?
No. DIY brushing only pushes creosote deeper into the flue, increasing fire risk. Broomfield’s high winds can spread embers if creosote ignites. The National Fire Protection Association NFPA warns that improper cleaning causes 25% of chimney fires. See why pros use vacuum systems and cameras to remove creosote safely. A professional sweep costs $120–$250, peanuts compared to a chimney fire.
My chimney is capped, but I still see sparks flying out, is this dangerous?
Yes. Sparks mean unburned wood particles or creosote flakes are escaping. Broomfield’s dry winds can carry sparks onto roofs or decks, starting fires. The EPA’s Burn Wise program EPA recommends burning only seasoned hardwoods and keeping a spark arrestor cap in place. If sparks persist, schedule a sweep, creosote buildup is likely the culprit. Learn how to prep your chimney for Broomfield’s dry summers.