Daniel Thompson Chimney Inc provides expert Chimney Sweep services in Longmont, CO, serving homes in historic neighborhoods like Sunset and North Longmont with licensed, insured technicians who clean and inspect chimneys to CSIA and NFPA standards. We offer free estimates and same-day service for urgent needs like creosote buildup or drafting issues common in Boulder County’s older homes.
What is creosote and why does my Longmont chimney get so much of it?
Creosote is the sticky, tar-like residue that builds up inside your chimney when you burn wood. In Longmont’s cool, high-altitude climate—where homeowners rely on wood stoves and fireplaces for warmth from October through April—creosote forms faster than in milder regions. Sunset bungalows with older masonry chimneys and North Longmont ranch homes with metal flues often see thicker layers, especially if fires are burned unseasoned or smoldering. Left unchecked, creosote can ignite, causing chimney fires that spread to nearby Longmont Museum & Cultural Center structures. We remove it safely and recommend annual inspections to catch buildup early.
How often should I schedule a chimney sweep in Longmont, CO?
Longmont homeowners should schedule a professional chimney sweep at least once per year if you use your fireplace or wood stove regularly. Historic Downtown homes with original brick chimneys may need more frequent cleaning due to older flues, while newer builds in Twin Peaks subdivisions with factory-built systems often require less. The Chimney Safety Institute of America CSIA recommends sweeping when creosote reaches 1/8 inch or more. After a wet spring like we had in 2023, many Longmont chimneys developed moisture issues—so if your flue feels damp or smells like mildew, call us for a free estimate to check for water damage.
Why does my Longmont chimney smell like campfire even when it’s not in use?
That campfire smell is usually caused by creosote residue or trapped moisture in your chimney. In Longmont, where humidity spikes in summer and fall, water vapor from rain or snow can condense inside unlined flues, mixing with soot to create a musty odor. Older homes near Left Hand Creek are especially prone to this because their chimneys weren’t designed for Colorado’s climate swings. We install chimney caps and waterproofing treatments to block moisture, and our sweeping process removes odor-causing buildup without harsh chemicals.
Can I burn pine in my Longmont fireplace, or will it damage my chimney?
Pine is a popular firewood in Longmont because it’s abundant and easy to split, but it’s also resinous—meaning it produces more creosote than hardwoods like oak or maple. Burning pine in an older masonry chimney in East Longmont can coat your flue in sticky deposits that are harder to remove. The EPA’s Burn Wise program recommends seasoning wood for at least six months and using hardwoods for cleaner burns. If you love pine, limit it to 20% of your fire and schedule a post-winter sweep to clear residue.
What’s the difference between a Level 1 and Level 2 chimney inspection in Longmont?
A Level 1 inspection is the standard for chimneys in good condition, like those in newer Niwot-style homes or well-maintained systems in Longmont’s historic districts. We check for obstructions, creosote buildup, and structural soundness using a video camera. A Level 2 inspection is required if you’ve had a chimney fire, a recent earthquake (Longmont sits near the Longmont Fault), or if you’re selling your home. It includes a thorough attic-to-roof review and may require removing parts of the chimney chase. Both meet NFPA 211 standards, but Level 2 is more comprehensive.
How much does a chimney sweep cost for a typical Longmont home?
In Longmont, chimney sweep costs vary by flue type and accessibility. A standard sweep for a single-story home in Sunset with a straight flue runs $120–$180, while a two-story Victorian in Downtown Longmont with a steep roof may cost $180–$250. Metal flues in newer builds are cheaper to clean than masonry, but older systems often need extra work like crown repairs. We offer free estimates and accept same-day bookings for urgent issues like drafting problems or animal nests. Check our pricing guide for detailed breakdowns.
My chimney is leaking—is this an emergency in Longmont’s rainy season?
Yes, a leaking chimney is an urgent issue in Longmont, where spring and fall bring heavy rains that can seep into cracked masonry or missing chimney caps. Older homes near Boulder County Open Space are especially vulnerable because their chimneys weren’t built with modern waterproofing. Left unaddressed, water can rot wooden framing, damage drywall, or corrode metal components. We seal leaks with waterproofing treatments and repair cracked crowns or flashing to prevent further damage. If you see water stains on your ceiling or hear dripping, call us immediately for a free inspection.
Do I need a chimney cap, and can Daniel Thompson Chimney Inc install one in Longmont?
A chimney cap is a must-have for Longmont homes—it keeps out rain, snow, birds, and debris while preventing downdrafts that can blow smoke into your living room. Niwot and Erie homeowners often skip caps because their chimneys are newer, but even modern systems benefit from protection. We install custom caps that match your flue size and style, including mesh screens to block sparks. Without one, your chimney is vulnerable to Longmont’s hailstorms or critters like squirrels that nest in flues. Ask about our free cap installation estimate when you book your next sweep.
| Service | Frequency | Cost Range (Longmont, CO) | When to Schedule |
|---|---|---|---|
| Standard Chimney Sweep | Annually (or after 2 cords of wood burned) | $120–$250 | Before heating season (September–October) |
| Level 2 Inspection | Every 3–5 years or after chimney fire/earthquake | $200–$400 | After major home events or before selling |
| Chimney Cap Installation | Once (or after damage) | $150–$350 | Before winter or after hail/storm |
| Waterproofing Treatment | Every 5 years or after leaks | $250–$500 | After spring rains or before winter |
| Flue Liner Repair | As needed | $500–$1,500 | If liner is cracked or missing |
Frequently Asked Questions
My chimney in Longmont’s historic district smells like mildew every summer. Why is this happening and how can I fix it?
That musty odor is likely from moisture trapped in your chimney after Longmont’s wet springs. Older masonry chimneys in Downtown Longmont absorb water like a sponge, and summer heat then evaporates it, carrying the smell into your home. We recommend a Level 2 inspection to check for cracks and install a chimney cap with a waterproofing treatment to seal the flue.
Why does my wood stove in Longmont struggle to draft in the winter, even after a chimney sweep?
Draft issues in Longmont often stem from wind patterns around your home or a flue that’s too short for the elevation. Boulder County’s foothills create unpredictable winds that can push smoke back into your stove. We assess your chimney’s height and may recommend extending the flue or installing a draft inducer. A quick free estimate can diagnose the problem.
Can I use my fireplace after a chimney sweeping in Longmont, or do I need to wait?
You can use your fireplace immediately after a sweep—our technicians leave your system clean and safe. However, if we found damage or needed repairs, we’ll recommend waiting until those are completed. For most Longmont homeowners, the only delay is letting the ashes cool if you had a fire that morning.
How do I know if my Longmont chimney needs a repair or just a good cleaning?
Signs you need repairs include crumbling mortar, rusted flue liners, or smoke leaking into your home—common in older Longmont homes. If your chimney looks structurally sound but has creosote buildup, a cleaning will suffice. We offer free inspections to tell the difference and provide transparent pricing for repairs or maintenance.
Need chimney sweep in Longmont, CO? Daniel Thompson Chimney Inc is licensed, insured, and ready to help.