Level 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.
Before
After
Before
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Before
AfterChimney Cleaning in Longmont, CO
A Level 2 chimney cleaning in Longmont runs $199-$289 for a standard sweep with NFPA 211 camera inspection, and we book most appointments within a week of your call. Longmont’s Chinook winds, freeze-thaw cycles at 5,000 feet, and mixed housing stock from 1890s brick to 1980s prefab inserts mean every flue here needs more than a brush - it needs a documented inspection that checks for wind-damaged caps, spalled crowns, and creosote accelerated by compressed burn schedules. Call (970) 598-0453 to schedule. Our crews serve Longmont from our Denver office, with local dispatch coordinated daily.
Why Longmont Homes Are Different
Longmont sits in the direct path of Chinook downslope winds that funnel through the St. Vrain Canyon gap. These extreme wind events blow off chimney caps, drive debris deep into flues, and cause chronic backdrafting that Boulder homeowners simply don’t face as often. Every cleaning appointment we run here includes a cap and crown inspection specifically for wind damage, not just creosote removal.
The housing stock splits sharply by era. Old Town’s brick Victorians and Craftsman homes, built before the 1930s, often have aging mortar joints and unlined flues that were legal when constructed but fail current NFPA 211 standards. East of Main Street, 1960s-1980s ranch and split-level tracts contain builder-grade prefab fireplaces with metal-insert flues now 40-60 years old. The 2013 St. Vrain flood left a corridor of homes near the creek with potential unremediated moisture damage at chimney bases. At this elevation, aggressive freeze-thaw cycling spalls brick faster than in Denver, and orographic snowfall off the Rockies keeps masonry wet year-round. Boulder County’s wood-burning curtailment days compress use into fewer, longer, hotter burns - accelerating stage-2 and stage-3 creosote.
Our Main Longmont Services
Longmont homeowners most often call us for chimney cleaning and repair, plus full fireplace service. Here’s what each covers locally.
Chimney Cleaning & Sweep in Longmont
We brush the flue, scan with a camera, and document creosote class and liner condition. In Longmont, we pay special attention to wind-blown debris in caps and the heavier creosote loads from compressed burn days under CDPHE Reg. 1. Every visit includes a written price before work starts and a photo record under Haven Standard Clause 4. Chimney Cleaning & Sweep in Longmont
Chimney Repair in Longmont
Our repair work addresses spalled brick, deteriorated mortar, and moisture intrusion common in Longmont’s freeze-thaw climate. We see frequent crown cracking from thermal shock and wind-driven rain penetration in older Old Town masonry. All repairs come with a written scope, written warranty, and the 365-Day Done Right Promise. Chimney Repair in Longmont
Fireplace Services in Longmont
We service gas and wood-burning units, including prefab fireplaces common in east Longmont’s 1970s-1980s subdivisions. Inspections cover firebox integrity, damper function, and gas line condition. We document everything with photos and provide written findings before recommending any work. Fireplace Services in Longmont
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
BeforeAfterChimney Cap & Crown in Longmont
Chimney caps and crowns in Longmont take a beating no other Front Range city matches. The Chinook winds through St. Vrain Canyon regularly rip off standard caps, force rain sideways into flues, and create pressure differentials that backdraft smoke into living rooms. We’ve replaced caps on the same home twice in one season when homeowners installed lightweight hardware-store models not rated for canyon-gap wind loads. Our Chimney Cap & Crown service uses materials from Copperfield and Gelco, specified for Front Range conditions.
Cap Replacement
Signs you need it
Your cap is missing, rattling, or visibly bent after wind events, or you’re finding debris, bird nests, or water in the firebox.
What it costs in Longmont
Cap replacement runs $285-$495 depending on flue count and whether we need a wind-load-rated model with spark arrestor.
How we do it
We measure the flue, photograph the existing condition, install a properly sized cap with stainless steel fasteners, and document the fit with a camera shot from below.
Crown Repair
Signs you need it
You see cracks wider than 1/8 inch, spalling concrete, or water staining on interior chimney walls after snowmelt or rain.
What it costs in Longmont
Crown repair ranges $425-$875; full crown replacement when the concrete is too deteriorated to patch runs $1,200-$2,400.
How we do it
We grind out cracks, apply bonding agent, trowel in high-strength repair mortar with proper slope and drip edge, then seal with a breathable waterproofing agent.
What Chimney Cap & Crown Costs in Longmont
| Item | Typical range in Longmont |
|---|---|
| Single-flue cap replacement | $285-$495 |
| Multi-flue cap installation | $495-$895 |
| Crown repair (cracks/spalling) | $425-$875 |
| Full crown replacement | $1,200-$2,400 |
| Crown coating (preventive) | $350-$650 |
How long does a chimney cap last in Longmont?
A properly installed stainless steel cap lasts 15-20 years, but we’ve replaced galvanized models in under 5 years due to Chinook wind fatigue and salt from road treatment. We warranty our cap installations for 5 years under the 365-Day Done Right Promise extended to full coverage.
Can a cracked crown wait until spring?
Small hairline cracks can be sealed before freeze-thaw accelerates damage, but cracks wider than 1/8 inch admit water that expands with each cycle and destroy the crown within one Longmont winter. We photograph the crack, show you the measurement, and write the scope before any work.
Chimney Liner & Rebuild in Longmont
Longmont’s Old Town core hides a problem rare even in comparable Boulder neighborhoods: 100-year-old brick flues built without clay tile liners, legal when constructed but now flagged under NFPA 211. Homeowners added wood inserts during the 1970s energy crisis, creating a hidden liability - unlined brick cannot contain a chimney fire, and creosote soaks into mortar joints. East Longmont’s 1960s-1980s tract homes face the opposite problem: thin aluminum or stainless flex liners in prefab fireplaces, now corroded or disconnected after decades of thermal cycling. Our Chimney Liner & Rebuild service addresses both with documented camera inspection and written scope before any work.
Stainless Steel Liner
Signs you need it
Your inspection reveals an unlined brick flue, cracked clay tiles, or a liner with gaps or corrosion visible on camera.
What it costs in Longmont
Stainless steel liner installation runs $2,800-$4,500 for a standard single-flue system, including insulation and top plate.
How we do it
We measure the flue, select a DuraFlex or Olympia Chimney UL-listed liner, insulate for NFPA 211 clearance requirements, and pull it with a winch while documenting every joint with photos.
Partial Rebuild
Signs you need it
Your chimney shows spalled brick above the roofline, a leaning stack, or mortar joints eroded to finger-depth, especially after freeze-thaw damage.
What it costs in Longmont
Partial rebuild from the roofline up typically runs $3,500-$7,500 depending on height, brick matching, and whether the crown is salvageable.
How we do it
We scaffold the work area, remove damaged courses to sound masonry, lay matching brick with type-N or type-S mortar per exposure, and install a new crown with proper slope and overhang.
What Chimney Liner & Rebuild Costs in Longmont
| Item | Typical range in Longmont |
|---|---|
| Stainless steel liner (single flue) | $2,800-$4,500 |
| Flexible liner with insulation | $2,200-$3,800 |
| Liner replacement (remove old) | $3,200-$5,500 |
| Partial rebuild (roofline up) | $3,500-$7,500 |
| Full chimney rebuild | $8,500-$18,000 |
Do I really need a new liner if my old chimney still works?
An unlined or damaged liner won’t show symptoms until failure - a chimney fire, carbon monoxide intrusion, or structural collapse. NFPA 211 requires a continuous liner for all active wood-burning systems; we document the condition with camera footage and provide a written scope before recommending replacement. Call (970) 598-0453 for a free second opinion on any other estimate.
How long does a liner installation take?
Most stainless steel liner installations finish in one day; partial rebuilds take 2-3 days weather permitting. We text your assigned technician’s name and ETA the morning of arrival, and we never start work without a written price you’ve approved.
Brands We Service in Longmont
We stock and install parts from DuraFlex, HeatShield, Gelco, and Copperfield through Haven’s buying network, keeping customer prices honest with direct procurement. Most cap and liner jobs need no special-order delay. our brands
Pricing for Chimney Cleaning in Longmont, CO
| Service | Typical range in Longmont |
|---|---|
| Standard chimney sweep with Level 2 inspection | $199-$289 |
| Heavy creosote removal (Class III) | $325-$495 |
| Fireplace insert cleaning | $225-$350 |
| Gas fireplace service and inspection | $175-$265 |
| Single-flue cap replacement | $285-$495 |
| Multi-flue cap installation | $495-$895 |
| Crown repair | $425-$875 |
| Full crown replacement | $1,200-$2,400 |
| Stainless steel liner installation | $2,800-$4,500 |
| Partial chimney rebuild | $3,500-$7,500 |
Prices increase in Longmont when we encounter unlined historic flues requiring extra setup, or when freeze-thaw damage has progressed to multiple courses of spalled brick. We deliver a written price before any work starts - Haven Standard Clause 1, no exceptions - and we never upsell from an initial quote without new camera evidence you can see.
Neighborhoods We Serve in Longmont
We run appointments across Longmont’s full range, from Old Town’s historic blocks to the newer developments near Union Reservoir. Most areas see scheduling within 3-5 business days, with emergency wind-damage calls prioritized same-week.
- Old Town / Downtown Longmont
- Prospect New Town
- Sunset / East Longmont
- Spring Gulch
- Union Reservoir area
Service Area - Cities Near Longmont
Our crews cover the northern Front Range corridor from Longmont, including Niwot, CO to the southwest, Erie, CO to the southeast, Frederick, CO to the east, and Boulder, CO to the west. Scheduling is coordinated from our Denver office with local dispatch to each community.
Serving Longmont, CO - Our Local Coverage Area
We’re based in the Longmont area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Chimney Cleaning in Longmont
NFPA 211 recommends annual inspection for all systems, with sweeping frequency tied to use and fuel. Longmont’s compressed burn schedule under CDPHE curtailment days means fewer but longer, hotter fires - we often find stage-2 creosote in single-season use and recommend sweeping after every cord of wood burned, or annually minimum.
Most cleaning and cap replacement requires no permit; liner installations and rebuilds typically do. We pull permits when required and include the cost in your written quote - no surprise fees after work begins.
Stage-1 creosote becomes stage-2, then stage-3 - a hard, tar-like glaze that restricts draft and fuels chimney fires. In Longmont’s wind-prone environment, a dirty flue plus a missing cap equals accelerated deterioration. The camera inspection we include shows exactly what stage you’re in, and we’ll tell you plainly when work can safely wait.
What happens when you call
- 1A real person answersNo phone trees - talk to a local chimney cleaning pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Longmont Customers Say
"We were buying the house and needed a real inspection. The report had photographs, the standard it was done to, and a clear repair figure. The seller paid for the repair."
- Lorna D."Cap and crown replaced after water was getting in. Price was quoted in writing, and they showed me the mortar failure first."
- Neil O."They ran a camera down the flue and showed me the cracked tiles on a screen. The previous company had swept it twice and never mentioned it."
- Gregory F.