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 Repair Across Longmont
Chimney repair in Longmont usually starts with a question a homeowner can’t answer alone: is this a small masonry fix, or a flue problem that’s been hiding behind the damper for years? We serve Longmont and the surrounding Front Range with the full loop – inspection, sweeping, and repair – handled by the same specialists who diagnose the problem. Our technicians have up to 13 years of experience, and we work in chimneys only. Call (855) 632-3564 to book a free estimate.
Why Longmont Homeowners Call Chimney Sweep Greeley for Chimney Repair
Longmont is a city of two chimneys. Old Town’s pre-1940s brick homes were built with masonry stacks that were never designed for modern gas appliances venting beside them, and the eastern subdivisions in 80504 run on prefab metal flues and factory liners with a completely different failure pattern. We work in both, and that matters when a repair call in one housing type needs tooling and know-how that a single-family-only sweep never develops.
Response time to Longmont is measured in a scheduled visit, not a dispatch clock. We book the work, arrive with the right diagnostic tools, and tell you what’s actually wrong before quoting. Our reputation in Longmont comes from homeowners who’ve been told by someone else they need a full reline and wanted a second opinion. We give them one, with a camera image they can see for themselves.
Local knowledge shows up in the details: which streets have shared stacks, where chinook wind has taken the crown off a cap, and how a 50-degree temperature swing in a single Front Range day speeds up spalling on a mortar crown. That kind of familiarity only comes from working chimneys in Longmont over and over.
Styles & brands we work with
- Sweep & inspection
- Caps & crowns
- Flue relining
- Masonry repair
- Gas fireplace service
Chimney Repair Companies in Longmont
Chimney Repair Companies in Longmont are asked to solve two problems that look the same to a homeowner but aren’t: masonry that’s failing from the outside, and a flue system that’s failing from the inside. A repair job here involves pulling the damper and looking into the flue before anyone quotes a number, because that’s where the real answer lives. A standard sweep in Longmont runs about $200, and when the inspection turns up an unlined or undersized flue – which is common behind Old Town’s century-old fireplaces – the reline that follows typically lands in the $2,000 to $4,500 range depending on height and liner system. Our chimney repair team works both halves of that job.
Diagnostic to Repair, Same Specialists
Inspection, sweeping, and repair happen in the same visit when the problem is clear. When it isn’t, a Level 2 inspection with a camera maps exactly which appliance vents where before any quote goes out. You see the evidence before you’re asked to approve work.
Two Housing Types, One Service
A masonry stack in Old Town needs different tools than a prefab metal flue in 80504. We carry the capability for both, so the technician who inspects your chimney is the one who repairs it.
Chimney Masonry Repair in Longmont
Chimney Masonry Repair in Longmont gets called most often for spalled crowns, cracked caps, and mortar joints that have given way to Front Range freeze-thaw. A crown repair is straightforward when it’s caught early: the failing mortar is cut out and replaced so water sheds off the top instead of soaking into the chimney. When the crown has been spalled for years, water gets into the smoke chamber and the interior needs resealing too. Tuckpointing and repointing joints on a masonry chimney typically run $300 to $800 depending on how much mortar is being replaced and how high the work sits. A full rebuild, when the damage is structural, will run higher and gets quoted only after the inspection confirms it’s needed.
Crowns, Caps, and Water Entry
Longmont’s chinook downslopes push temperature swings that can span 50 degrees in a day. That cycle works on mortar crowns harder than steady weather does, cracking them a little deeper each freeze. Catching a cracked crown early is usually a repointing job. Letting it go turns into smoke chamber damage.
Shared Stacks and Adjacent Flues
Old Town’s dense attached brick homes sometimes put two or three dwellings into one shared or adjacent stack. When a crown fails on one side, water runs into the whole chimney top. Repairing masonry on a shared stack means checking the neighbour’s flue at the same time.
Trusted Brands We Service in Longmont
We source and install from a vetted portfolio of brands chimney technicians actually trust: DuraFlex flexible liners for retrofit and replacement work, Copperfield systems for installations where a rigid liner fits better, and Famco venting and cap components for metal flue systems. We don’t claim parts are stocked locally or promise a turnaround we can’t control – what we can say is that when a repair calls for a specific liner system or a matched cap, we know the product and we know how it installs. That’s the difference between a general handyman guessing and a chimney specialist choosing the right component for your chimney type.
Common Chimney Repair Problems We See in Longmont Homes
- Shared-stack cross-contamination in Old Town attached brick homes. When a neighbour’s gas appliance vents into the same stack as a wood-burning fireplace, the draft stalls and smoke rolls back into the room. No single-family sweep ever has to untangle this, which is why the camera inspection comes first.
- Spalled crowns and cracked caps from chinook freeze-thaw. A 50-degree swing in a day works mortar harder than steady mountain weather does. Water gets into the masonry, freezes, and pushes it apart from the inside.
- Retrofitted wood stoves hiding behind a damper. Pulling the damper sometimes reveals a stove installed without a proper flue liner, with mismatched flue tile behind it. A $200 sweep becomes a reline quote once that’s found.
- Glazed third-degree creosote from long shoulder-season idle periods. Longmont chimneys often sit idle from spring through fall, and creosote from winter’s use hardens into a glazed deposit that resists a standard sweep by the time summer arrives.
See the difference
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AfterPricing for Chimney Repair in Longmont, CO
Chimney repair in Longmont is priced per job by the written estimate, and the estimate is free. A typical sweep runs about $200. A crown repair or partial repoint is usually $300 to $800. A full reline for an unlined or failing flue typically runs $2,000 to $4,500 depending on chimney height and whether the liner is flexible or rigid. Waterproofing and flashing repair prices get quoted once the inspector sees the extent of the damage. What moves the number is height, access, liner type, and whether the repair reaches the smoke chamber. Nothing is recommended without camera evidence you can see and approve before work starts.
We Also Serve Cities Near Longmont
We also take repair calls in Niwot, Erie, Dacono, and Gunbarrel. The housing stock and climate conditions there differ from Longmont’s Old Town core, but the inspection and repair process is the same: camera first, quote second. If your chimney sits just outside Longmont’s city limits, we still cover the work.
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 Repair in Longmont
Yes, in most cases we can repair the flue serving your address without touching your neighbour’s. But we inspect the shared stack first, because water entry and draft problems on your side often start on theirs. A crown or cap failure on a shared chimney top affects everyone venting into it. Call (855) 632-3564 and we’ll assess both sides before quoting your repair.
Because a wood stove was retrofitted into the fireplace without a proper liner, often years before you bought the home. Pulling the damper and finding vented gas or mismatched flue tile behind it is a code surprise that turns a routine sweep into a full reline quote. The liner has to match the appliance. Call (855) 632-3564 for an inspection that confirms what’s actually behind that damper.
Yes, it can. Front Range chinook downslopes bring temperature swings that can span 50 degrees in a day, and each freeze-thaw cycle pushes water deeper into mortar that’s already cracked. A crown that would last years in a milder climate can spall in a few seasons here. Call (855) 632-3564 for a free crown inspection.
On prefab metal flues, the failure happens at the joints and the cap rather than at the flue tile. Factory liners crack at the seams, gaskets fail, and caps loosen or corrode. That lets water in and can let exhaust leak where it shouldn’t. A masonry-only inspection misses it. Call (855) 632-3564 – we inspect metal flue systems too.
Because long shoulder-season idle periods let winter’s creosote harden into a glazed, third-degree deposit that resists a standard sweep. By spring it’s baked on. That’s the deposit most associated with chimney fires. Call (855) 632-3564 to book a sweep before it hardens – the price is the same either way, and the work gets easier the sooner it’s done.
Book a Chimney Repair Estimate in Longmont
If you’re in Old Town and your damper just revealed something you didn’t expect, or you’re in 80504 watching a cap peel off your metal flue, call (855) 632-3564. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday. Estimates are free, nothing is recommended without camera evidence you can see, and we’ll tell you plainly when a repair can safely wait. Chimney Sweep Greeley works in chimneys only – it’s all we do.
Written by the team at Chimney Sweep Greeley.