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 Longmont
If you live in Longmont, the chimney sitting above your fireplace is probably older than the appliances you’re running in it – and that gap is where trouble starts. We’re a chimney-only company, and we work on both sides of this town: the century-old brick stacks in Old Town and the prefab metal flues out in the newer eastern subdivisions. That matters because the two need different tooling and different expertise, and a sweep who only knows one will miss problems in the other. Our technicians have up to 13 years of experience, and our call line is (855) 632-3564. We answer 24/7.
Why Longmont Homeowners Call Chimney Sweep Greeley for Chimney Sweep
We serve Longmont as part of a region-wide chimney practice, which means we see a lot of Front Range chimneys and we know what the local weather does to them. Longmont sits where chinook downslopes and temperature swings can move 50 degrees in a single day. That’s hard on mortar crowns and chimney caps.
We work in chimneys only – it’s all we do. We’re not a general handyman outfit that adds sweeping to a menu of unrelated home services. Every technician on a job is trained for flue work specifically, from Level 1 and Level 2 inspections through creosote and soot removal to the repair that follows.
What earns repeat calls around here is evidence. Nothing gets recommended without camera footage you can see on the screen yourself. When a sweep turns into a reline conversation, you’ll understand why before any number is quoted.
Styles & brands we work with
- Sweep & inspection
- Caps & crowns
- Flue relining
- Masonry repair
- Gas fireplace service
Chimney Sweep Services in Longmont
Chimney Sweep Services in Longmont come down to three jobs: sweeping, inspection, and the repair work that a sweep or inspection turns up. A standard annual sweep for a wood-burning fireplace runs roughly $175-$290 in this market, which includes brushing the flue and a visual check of the firebox, damper, and cap. A Level 1 inspection starts around $125-$200, and a Level 2 inspection with a camera run of the full flue typically lands at $225-$400. If you’re booking a sweep because you haven’t used the fireplace in a season or more, tell us that when you call; it changes what we plan for.
Annual Sweep and Flue Brushing
A yearly sweep clears soot and creosote before it hardens into something a brush can’t touch. On a masonry flue in an older Longmont house, we pull the damper and look for mismatched or cracked tile while the brush is still out. That’s the moment a routine visit either stays routine or turns into a real conversation.

Soot and Creosote Removal
Creosote that’s had a long shoulder season to sit hardens into glazed, third-degree deposits that resist a standard brush. Those get rotary or chemical treatment depending on how far along they are. We won’t quote for either until we’ve seen the flue on camera.

Chimney Cleaning in Longmont
Chimney Cleaning in Longmont is a bigger job than most people expect when the fireplace has gone unused for months, and the price reflects that. A deep clean with creosote treatment for moderate buildup typically runs $250-$450, while a glazed third-degree removal requiring rotary work can reach $400-$700. If you’ve noticed a strong campfire smell on warm days or smoke that doesn’t draft right, that’s usually buildup plus a cap or crown issue.
Fireplace and Firebox Cleaning
Ash, soot, and debris collect in the firebox even when the flue itself is fine. We clean the firebox and glass, check the damper seal, and look at how the smoke shelf is doing. Small leaks there show up as smoke spilling into the room on cold starts.
Gas Insert and Prefab Flue Service
Gas inserts and the factory metal liners in Longmont’s newer eastern subdivisions fail at joints and caps rather than at the flue tile. Service for those systems means checking the liner connections and the venting, not just brushing a masonry stack. Different tools, different checklist.
Trusted Brands We Service in Longmont
When a repair or reline is genuinely needed, we source and install professional-grade products from a vetted set of industry brands – DuraFlex flexible liner systems for retrofits, HeatShield for restorative flue repair, and Copperfield and Famco for venting and cap and cover solutions. We don’t claim factory-authorized status for any of them; we install what they make because chimney technicians trust those materials. We don’t stock parts locally and we don’t promise a same-day installation from inventory. What we do is specify the right system for your chimney type, whether that’s a rigid liner in an old brick stack or a flexible retrofit, and quote it on a written estimate.
See the difference
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After
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AfterCommon Chimney Sweep Problems We See in Longmont Homes
Longmont’s chimney problems split along a fairly clean line, and where you live tells you a lot about what we’re likely to find.
- Unlined or clay-tile flues in Old Town. The pre-1940s brick homes around the old-town grid and the 80501 core often have chimneys that were built without a liner or with clay tile that’s since cracked. A brush sweep without a camera can miss a cracked tile entirely and leave a hazard in place.
- Illegal wood-stove retrofits discovered behind the damper. We routinely find wood stoves set into Old Town fireplaces without a proper liner, revealed only when the damper comes out and the flue behind it doesn’t match. That’s the kind of code surprise that turns a standard sweep into a reline quote.
- Spalled mortar crowns and caps. The chinooks and 50-degree day swings here eat mortar crowns and chimney caps faster than milder climates do. Homeowners often read a crumbling crown as a cleaning problem when it’s actually water intrusion and a draft issue.
- Failed joints and caps on prefab metal flues. In the 1990s and 2000s subdivisions spreading east and northeast through 80504, and in the newer builds around 80503, the failures show up at liner joints and caps rather than at flue tile. A crew tooled only for masonry leaves that housing stock underserved.
Pricing for Chimney Sweep in Longmont, CO
A typical chimney sweep in Longmont runs $175-$290, and a Level 2 inspection with camera runs $225-$400. A deep clean with creosote treatment is $250-$450, and glazed third-degree removal needing rotary work runs $400-$700. Relining, crown repair, and cap replacement are quoted separately once we know the chimney type. A HeatShield restorative liner repair can often replace a full reline for less where the flue is otherwise sound. Costs shift with flue height, liner condition, and whether we’re working a masonry stack or a prefab metal system. The estimate is free and the price is set per job by the written estimate, so the number you agree to before booking is the number on the invoice.
We Also Serve Cities Near Longmont
Our coverage extends past the city line into Niwot, Erie, Dacono, and Gunbarrel, all within reasonable drive of the Front Range customers we serve. If you’re just outside Longmont proper and wondering whether we come out, call and we’ll tell you. We book sweeps by appointment, so plan ahead before the burning season starts. Our chimney sweep team handles every visit from inspection through repair.
Serving Longmont, CO – Our Local Coverage Area
We serve Longmont and nearby communities. Use the map below to see the area we cover. If you’re nearby, we can almost certainly help.
FAQs About Chimney Sweep in Longmont
No. A standard sweep clears soot and creosote but won’t grade the flue, and an unlined brick chimney needs that check before it’s safe to use. We recommend a Level 2 camera inspection on any unlined stack so you can see the flue interior yourself. Call (855) 632-3564 for an exact quote; estimates are free.
Because they’re different systems with different failure points. The factory metal liners and prefab flues common in 80504 and the newer builds around 80503 fail at joints and caps, not at flue tile. A masonry stack in the old-town grid needs brushing, tile inspection, and crown work. Same trade, two toolkits.
You can’t tell by looking from the firebox, so a camera run of the flue is the only reliable answer. Third-degree creosote is glazed and hard, and it resists a standard brush; normal soot brushes away. We show you the footage before recommending anything. Call (855) 632-3564 to book an inspection.
No, a crumbling crown is a water-intrusion and draft problem, not a buildup problem. The chinook swings here spall mortar faster than milder climates, and a crown that’s failing lets water into the flue. Sweeping won’t fix it; crown repair or replacement will. Call for an exact quote on the repair – estimates are free.
Yes, and sooner is better than later. Long idle periods let creosote harden into glazed deposits that a standard sweep can’t clear by spring, and a gas insert or prefab flue still needs its joints and cap checked. Book before the burning season starts. Call (855) 632-3564 for an exact quote; estimates are free.
Whether your chimney is an unlined Old Town stack or a prefab metal flue in the eastern subdivisions, the first step is the same: get eyes on the flue before anything gets quoted. Call (855) 632-3564 for a free estimate. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday.
Written by the team at Chimney Sweep Greeley.