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.
DuraFlex Chimney Cleaning in Northglenn, CO
We provide independent DuraFlex service across Northglenn, and what sets our work apart here is that we understand how flexible stainless liner systems age inside this city’s mid-century flues. DuraFlex liners are a strong fix for a failing clay-tile chimney, but they don’t last forever in a climate that freezes and thaws as often as ours does. Whether you need a Level 2 inspection, a creosote sweep, or a cap replacement, we diagnose the system and repair what we find in one visit. Call (833) 749-6226.
Why Northglenn Residents Choose Us for DuraFlex Service
Most homes in Northglenn were built as postwar tract houses, and plenty of those chimneys have been relined at least once since. A DuraFlex liner is one of the most common ways to bring an old flue back into service. Our technicians have up to 15 years of experience working on these systems, and they know the failure points that show up after a decade or two of heavy winter burning.
We’re an independent shop. We’re not affiliated with DuraFlex and we’re not an authorized dealer, which means our advice is about your chimney, not about hitting a brand’s sales number. We install quality parts that fit your specific liner properly, including OEM DuraFlex components for the connections and caps where fit and safety matter most. You’ll get clear scheduling, a written estimate before any work starts, and a technician who can handle both the sweep and the repair. For details on the liner system itself, see our DuraFlex brand hub. We serve homeowners throughout Northglenn.
Styles & brands we work with
- Sweep & inspection
- Caps & crowns
- Flue relining
- Masonry repair
- Gas fireplace service
Common DuraFlex Chimney Cleaning Problems We Solve in Northglenn
Here are the DuraFlex issues we run into most, each tied to how Northglenn’s climate and housing stock shape them.
- Insulation wrap breakdown on insulated liners. Moisture gets behind the wrap through freeze-thaw cycling, and once the insulation is compromised the liner runs cooler and creosote builds. This is one of the most common reasons a Northglenn homeowner notices weak draft.
- Joint separation at elbows and tees. Thermal expansion and contraction work on the seams year after year, and after enough hard winters a joint can open. A Level 2 inspection is the only reliable way to catch it before it causes smoky backdrafts.
- Corroded top plates and caps. Snowmelt sitting on the crown through repeated freeze-thaw cycles eats into caps, and once water gets in, the liner below pays for it. Cap replacement is often the cheapest repair that saves the whole system.
- Blocked or crushed liner sections. Uncapped flues on older Northglenn homes attract nesting animals and debris, and a crushed section blocks draft entirely. We find these on camera and show you the footage.
- Seized dampers and smoky starts. A lot of these homes still have original 1960s damper assemblies that don’t open fully after years of disuse, which sends smoke back into the room even when the liner is fine. We check the damper as part of the sweep.
DuraFlex Service in Northglenn: What Local Conditions Mean for Your Equipment
Northglenn sits in the South Platte Valley, where temperature inversions and winter particulate pollution are a regional concern. That changes when you can burn, not just how often you sweep. On no-burn days, a clean DuraFlex liner doesn’t make it okay to light a fire; the air quality rules still apply. So our scheduling here looks a little different from what you’d expect in a mountain town. During inversion stretches, we’ll often advise a homeowner to hold off on burning even right after a sweep, and we’ll plan the next cleaning around a stretch when you can actually use the fireplace. That’s a real conversation we have in Northglenn through the colder months. A dirty liner is a fire risk. A clean one burned on a no-burn day still adds smoke to a valley that’s already holding too much.
DuraFlex Models & Products We Service in Northglenn
We work on the flexible stainless liner systems DuraFlex builds for residential chimneys, including smooth-wall liners, insulated liner kits, and reline kits meant for masonry fireplaces. We also service multi-flue caps and the top-end components where water and weather attack first. When we replace a part, we match it to your existing system: OEM DuraFlex components for structural connections, caps and critical joints, and quality aftermarket parts where the fit is proven and the cost makes sense. We don’t keep a warehouse; every part gets chosen to fit your flue, not a generic one-size assumption.
See the difference
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After
Before
After
Before
AfterDuraFlex Service Pricing in Northglenn
Pricing depends mostly on the condition of the liner and what we actually find on camera. A Level 2 inspection runs $150-$275 depending on the chimney’s accessibility. A standard sweep usually runs $130-$220. Creosote removal beyond the normal stage one or two buildup costs $250-$450. A cap replacement typically runs $120-$300 in parts and labor. A partial reline or joint repair can run $400-$1,200. If the liner is damaged enough to need a full replacement, that’s a larger job with its own written estimate. We set the final price in writing before any work starts, and the estimate is free.
If you’re not sure whether you’re looking at a cleaning or a repair, call (833) 749-6226. We’ll inspect and tell you straight.
Serving Northglenn, CO – Our Local Coverage Area
We serve Northglenn and nearby communities. Use the map below to see the area we cover. If you’re nearby, we can almost certainly help.
FAQs – DuraFlex Chimney Cleaning in Northglenn
Northglenn’s freeze-thaw cycles and heavy winter burning wear on a liner faster than in a mild climate, so an annual inspection matters more here. The contraction and expansion work on joints, seams and caps every time the temperature swings past freezing. We recommend you have your liner inspected at the beginning of each burning season, and again if you notice draft problems mid-winter. Call (833) 749-6226 for a free estimate.
No, a clean liner doesn’t override a no-burn day. Air quality rules in the South Platte Valley apply regardless of your chimney’s condition, and lighting up during an inversion makes the particulate problem worse. When we sweep in Northglenn, we’ll tell you honestly whether now is a good time to burn or a good time to wait. Call (833) 749-6226 if you want to plan around the weather.
Smoky backdrafts, weaker draft than you remember, a sour smell coming down the flue, and water in the firebox after snowmelt are the classic signs. A rusted or loose cap is often the first thing you’ll see from the ground. On split-levels typical of Northglenn’s mid-century stock, backdrafts show up fast because the flue run is shorter. A Level 2 inspection with camera footage will confirm what’s happening. Call (833) 749-6226 to book one.
It comes down to what the camera shows. Stage one or two creosote, a clean sweep handles it. Joint separation, crushed sections, or compromised insulation wrap means repair or relining. We show you the footage so you can see the problem yourself, and we won’t recommend a reline unless the liner actually needs one. If a repair can safely wait, we’ll tell you. Call (833) 749-6226 for an estimate.
Yes. Homes built between 1955 and 1975 often have original clay-tile flues with cracks from decades of thermal cycling. When a DuraFlex liner goes into a flue like that, the tile condition matters for fit, clearance and how securely the system anchors. We check the tile before any liner work. Call (833) 749-6226 to schedule an inspection.
Service Areas Near Northglenn
We also serve homeowners in the surrounding north-metro area, including work through our Westminster page, plus Commerce City, Thornton, Broomfield and Denver. If you’re just outside Northglenn, call and we’ll confirm coverage.
Book Your DuraFlex Service in Northglenn Today
Whether you need a sweep, a Level 2 inspection, a cap replacement, or a repair on a compromised liner, we can handle it in one visit. Call (833) 749-6226 for a free estimate. We answer 24/7, with fast dispatch from 7am to 7pm, Sunday through Friday. We repair what we find.
Written by the team at Grafton Chimney Sweep.