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.
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Before
AfterWhy Kennesaw Homeowners Choose DuraFlex Chimney Cleaning
Level Two Chimney Kennesaw provides independent Duraflex service in Kennesaw and across Cobb County, including DuraFlex chimney cleaning, inspection, and repair for all DuraFlex SS, DuraFlex AL, DuraFlex Pro, and DuraFlex 316L smooth-wall liner systems. Our technicians carry DuraFlex-compatible clamps, nose cones, and cap hardware on every truck, so most liner issues are diagnosed and corrected on the same visit with camera documentation to prove it. Call (678) 535-2204 for a written estimate before any work begins.
We’ve swept and repaired hundreds of DuraFlex stainless steel flexible liners in Kennesaw, from the factory-insulated DuraFlex SS to the DuraFlex Pro double-wall lines, and we also handle Duraflex service in Acworth. This isn’t generic chimney work with a brand name swapped in. We know the specific failure patterns these liners develop in Cobb County’s humid subtropical climate, where summer moisture infiltration through aging chase covers accelerates rust and liner degradation between burning seasons. Kennesaw’s housing stock, built heavily during the 1980s and 1990s northward sprawl along I-75 and Barrett Parkway, relies predominantly on prefabricated zero-clearance fireplace systems with metal flue chases. These units are now 25-40 years old, past their typical 20-30-year service lifespan, and their DuraFlex liners need assessment by technicians who understand the product line specifically.
We are an independent DuraFlex service provider. We are not affiliated with or authorized by DuraFlex Manufacturing. That independence means we source DuraFlex-compatible OEM-spec parts and quality aftermarket alternatives through our Haven buying network to keep pricing honest, and we recommend only what the camera shows.
Why Trust Level Two Chimney Kennesaw for Your DuraFlex Chimney Cleaning?
Corrine Halstead, owner of Level Two Chimney Kennesaw, completed her chimney and heating systems coursework at Apex Technical School in Manhattan before years of hands-on work on rooftops and inside fireboxes. For several years now, she and her crew have serviced homes throughout Kennesaw, including the older two-story colonials near Kennesaw Mountain that throw up surprises in the flue almost every season. Her standing rule at the end of every inspection: she won’t leave a homeowner guessing about what they’re looking at. We write it down before we ask you to decide anything.
That means a written price, written scope, and written warranty delivered before any work starts, per Clause 1 of the Haven Standard. Not after the tech is already in your living room. Every DuraFlex job includes an NFPA 211 Level 2 camera-scan inspection with a documented photo record, standard under Haven Standard Clause 4 since 2009. Our technicians are background-checked, uniformed, and carry license information you can verify. You get a text when your tech is on the way, and a live person answers our phones 24 hours a day.
We’ve completed more than 38,000 chimney inspections and cleanings since 2009. Every single one had a written price before work started and a documented record when it was done. For DuraFlex systems specifically, our techs understand the critical distinction between a DuraFlex SS factory-insulated liner and a DuraFlex AL aluminum gas liner, because treating them the same way damages the liner and voids any remaining warranty coverage. We don’t guess. We camera-scan, we document, and we explain what we found in plain terms before you decide.
Common DuraFlex Chimney Cleaning Problems We Fix in Kennesaw
- Creosote glaze baked into DuraFlex SS and Pro liner corrugations. This happens when unseasoned wood burns in a tightly dampered Kennesaw fireplace, allowing moisture-laden smoke to condense on the cooler corrugated walls of the flexible liner. The glaze hardens into a shiny, tar-like layer that standard wire brushes won’t touch. We use rotary poly brushes with whip heads to break the glaze down to bare metal, then confirm the full run is clean on camera. In the Barrett Parkway subdivisions, we see this on DuraFlex SS liners that haven’t been properly swept in three or more burning seasons.
- Bottom clamp and nose cone separation at the appliance collar. The DuraFlex liner is held to the insert or appliance with a specific clamp-and-nose-cone assembly. Over heating cycles, thermal expansion loosens the clamp, the liner rides up, and smoke leaks into the firebox or surrounding chase. Our field techs carry direct-fit DuraFlex-compatible clamps and nose cones on the truck. We reseat the liner, install a new clamp, and verify the seal with a smoke test and camera pull-back.
- Insulation wrap torn or waterlogged on DuraFlex SS liners. The factory insulation between the stainless liner and the outer mesh is critical to maintaining flue gas temperature and preventing condensation. When a cap or top plate was never properly sealed, or when the original galvanized chase cover has rusted through (common on 1980s-90s Kennesaw prefab units), rainwater soaks the insulation. The wet insulation holds chloride-laden moisture against the 316L stainless, causing rust-through at the top section. We replace the damaged top plate, source a proper multi-flue cap, and assess whether the liner itself is still serviceable.
- DuraFlex AL liners corroded from acidic condensate on gas logs and inserts. The DuraFlex AL aluminum flexible liner is rated for gas appliances only, but even within that spec, high-efficiency gas inserts produce acidic condensate that attacks the aluminum corrugations. Pinhole leaks appear first around the first few corrugations above the appliance collar, where condensate pools. We spot these with camera inspection, not guesswork. If the corrosion is localized, we may section-replace with DuraFlex-compatible AL components. If pitting is widespread, we recommend upgrading to a DuraFlex SS or Pro liner rated for the appliance’s actual operating conditions.
- Top plate and cap mismatch causing draft failure and water entry. Kennesaw’s high summer humidity and occasional ice storms in winter mean the top termination of a DuraFlex liner works hard. A cap that’s too small, a top plate with an improper storm collar, or a multi-flue cap installed without regard to the liner’s outer diameter lets water run down the chase and degrades the entire system from above. We measure the liner OD, the chase opening, and the flue count, then fit DuraFlex-compatible or aftermarket stainless caps rated for the local wind and precipitation load.
Before
AfterDuraFlex Parts & Our Repair-vs-Replace Approach
We use DuraFlex-compatible OEM-spec clamps, top plates, nose cones, and multi-flue caps whenever they are available through our Haven buying network. For discontinued DuraFlex AL hardware or older DuraFlex SS components no longer in production, we fit quality aftermarket stainless components rated for the same temperature and appliance type, sourced from Olympia Chimney, Famco, and Copperfield. We never install a part we can’t document.
If a DuraFlex liner is pitted through, has lost its clamps at multiple joints, or shows rust-through where the insulation failed, we recommend replacement rather than patching a compromised flue. That’s not an upsell. It’s the difference between a liner that will last another decade and one that will fail during the next cold snap. We show you the camera footage, we write the price for repair and the price for replacement, and you decide. Call (678) 535-2204 for a free estimate with both options spelled out.
Our DuraFlex Service Process - Step by Step
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Diagnosis with NFPA 211 Level 2 camera inspection. We run a high-resolution camera the full length of your DuraFlex liner, documenting corrugation condition, creosote class, clamp integrity, and top plate seal. For DuraFlex SS and Pro liners, we specifically check for glazed creosote in the corrugation valleys. For DuraFlex AL, we inspect for condensate pitting near the appliance collar. You see what we see. This is Haven Standard Clause 4, and we’ve done it on every job since 2009.
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Written scope and price before any work. We deliver a written price, written scope, and written warranty before anyone picks up a tool. No verbal estimates. No “we’ll see how it goes.” Clause 1 of the Haven Standard requires it, and Corrine Halstead enforces it on every Kennesaw job.
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Repair or install with DuraFlex-compatible parts. For cleaning, we select brushes matched to your liner material: poly whip heads for glazed DuraFlex SS and Pro, softer nylon for DuraFlex AL. For repairs, we install OEM-spec or rated aftermarket clamps, nose cones, top plates, and caps from our truck stock. Most Kennesaw jobs are completed same-visit.
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Post-service testing and camera verification. We run a final camera pull to confirm the full liner run is clean, the appliance connection is tight, and the cap termination is properly sealed. For gas systems, we perform a combustion spillage test. For wood-burning systems, we verify draft with a manometer.
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Documented record and 365-Day Done Right Promise. You receive a photo record of the inspection findings, the work performed, and the parts installed, plus a written warranty. If it’s not done right, we make it right. That’s stamped on every job.
DuraFlex Products We Service & Install in Kennesaw
We service and install the full DuraFlex flexible liner line: DuraFlex SS (316L stainless steel, factory-insulated flexible liner for wood-burning fireplaces and appliances); DuraFlex AL (aluminum flexible liner for gas logs, inserts, and low-temperature gas appliances); DuraFlex Pro (double-wall stainless flexible liner for wood, pellet, and multi-fuel systems); and DuraFlex 316L smooth-wall relining kits (for applications requiring reduced friction and improved draft). We stock DuraFlex-compatible clamps, nose cones, top plates, and multi-flue cap hardware locally for Duraflex in Marietta, Kennesaw, and all of Cobb County dispatch, and we source full liner kits through our Haven network when replacement is the right call.
We Also Service These Brands
Level Two Chimney Kennesaw is not a single-brand shop. We service and install HeatShield cerfractory flue sealant systems for masonry chimney resurfacing, Gelco chimney caps and accessories, and we source materials from Olympia Chimney, Famco, and Copperfield for repairs and rebuilds. Our multi-brand capability means we recommend the right product for your specific chimney system, not the only one we know how to sell.
FAQs - DuraFlex Chimney Cleaning Service in Kennesaw
No. We are an independent DuraFlex service provider with no affiliation or authorization from DuraFlex Manufacturing. We service DuraFlex products using OEM-compatible and quality aftermarket parts, and we document our work with the same camera-scan inspection and written warranty we apply to every brand.
We use DuraFlex-compatible OEM-spec parts whenever available through our Haven buying network. For discontinued DuraFlex AL or older SS hardware, we fit quality aftermarket stainless components rated for the same temperature and appliance type, sourced from Olympia Chimney, Famco, and Copperfield. We never install a part without confirming its rating matches your system.
A standard DuraFlex Chimney Cleaning & Sweep with Level 2 inspection takes 60-90 minutes for most Kennesaw homes. Repairs involving clamp replacement, top plate resealing, or cap installation typically add 30-60 minutes. We schedule enough time to do the camera work properly and explain the findings before we leave. Call (678) 535-2204 to book a slot that works for your calendar.
We service all current and recently discontinued DuraFlex flexible liner systems: DuraFlex SS, DuraFlex AL, DuraFlex Pro, and DuraFlex 316L smooth-wall relining kits. If you’re unsure which liner is in your chimney, we’ll identify it during the Level 2 inspection and explain what that means for your maintenance schedule.
Proper maintenance by a qualified technician does not void a DuraFlex warranty. However, using incorrect cleaning methods (wire brushes on DuraFlex AL, for example) or installing non-rated parts can. We follow manufacturer-compatible procedures, document everything, and use parts rated for your specific liner material and appliance type. If warranty coverage is a concern, we review the documentation with you before starting work.
DuraFlex chimney cleaning with Level 2 camera inspection in Kennesaw typically runs $189-$289 for standard SS and Pro liners, and $159-$239 for DuraFlex AL gas systems. Repairs involving clamp replacement, top plate work, or cap installation range from $85-$340 depending on parts and access. We deliver a written price before any work starts, and our Free Second Opinion on any competitor’s written estimate is always available. Call (678) 535-2204 for an exact quote - estimates are free.
Yes. Hard, shiny creosote is stage-3 glazed creosote, and it requires rotary mechanical cleaning with poly or chain whip heads, not standard wire brushes. We run a rotary system that breaks the glaze off the DuraFlex SS corrugations without damaging the 316L stainless, then confirm the liner is clean to bare metal with a camera pull-back. A customer off Barrett Parkway had exactly this problem after burning unseasoned oak in a tightly dampered fireplace, and we restored full flow without liner damage.
The bottom clamp or nose cone has separated from the appliance collar, allowing the liner to ride up and break the seal. This is a common thermal-cycling failure on DuraFlex Pro double-wall liners in wood-burning service. We reseat the liner, install a new DuraFlex-compatible clamp assembly, and verify with a smoke test and camera inspection that the connection is tight.
No. The DuraFlex AL is aluminum, not steel, so what appears as “rust” is actually corrosion from acidic condensate attacking the aluminum corrugations. This indicates the liner is deteriorating and may be developing pinhole leaks. We inspect with a camera to assess severity. Localized damage may allow section replacement; widespread pitting means the liner should be upgraded to a DuraFlex SS or Pro rated for your appliance’s actual conditions. Call (678) 535-2204 for a camera inspection - delaying this risks flue gas leakage into your home.
NFPA 211 recommends an annual Level 1 inspection for all chimney systems, with a Level 2 camera inspection required at change of occupancy, after a chimney fire or seismic event, or before liner replacement. For Kennesaw’s aging prefab housing stock, we advise a Level 2 inspection every 2-3 years even without those triggers, because the humid climate and thermal cycling degrade DuraFlex clamps and top seals faster than in drier regions. The camera finds what a flashlight misses.
Yes. We measure your DuraFlex liner outer diameter, chase opening dimensions, and flue count, then source a DuraFlex-compatible or rated aftermarket stainless top plate and multi-flue cap. Proper fit prevents the water infiltration that destroys DuraFlex SS insulation and rots Kennesaw’s aging framed chases from the inside out.
Book Your DuraFlex Service in Kennesaw, GA
Call (678) 535-2204 to schedule your DuraFlex chimney cleaning, inspection, or repair. A live person answers 24 hours a day. We’ll deliver a written price before any work starts, perform an NFPA 211 Level 2 camera inspection with a documented photo record, and back the work with our 365-Day Done Right Promise. Free Second Opinion on any competitor’s written estimate. Serving Kennesaw and all of Cobb County.
Written by Corrine Halstead, Owner at Level Two Chimney Kennesaw, serving Kennesaw since 2009.