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.
DuraFlex Chimney Cleaning & Sweep in Pasadena: What to Know First
We provide independent DuraFlex chimney cleaning and sweep services throughout Pasadena, typically scheduling within 3-5 business days during peak season and 1-2 weeks in summer. Every job starts with a camera-scan inspection and a written price before any work begins - no exceptions. If you own a DuraFlex liner, cap, or chimney component and need creosote removal, a Level 2 inspection, or annual sweep maintenance, we’ll document the condition, name the exact scope, and give you a flat price you can hold in your hand before we start. Call (213) 459-6058 to speak with a live person now.
How DuraFlex Products Fail - and How We Fix Them
- DuraFlex SW (stainless wall) liners with premature seam separation. The SW series uses a corrugated 316Ti stainless body with a smooth inner wall, but we’ve found the longitudinal seam weld can open at stress points where Pasadena’s Santa Ana wind cycles create thermal shock - rapid heating followed by sudden cooling as downdrafts hit. We camera-scan the full length to map separation points, then sleeve with a compatible 316Ti insert or perform a partial reline using DuraFlex-compatible components sourced through our Haven buying network.
- DuraFlex Pro liner crowns that pool condensation. The Pro series termination caps with lower-profile rain guards were common in 2016-2019 Pasadena installations. Their shallow pitch collects moisture against the flue collar during our wet winters, accelerating creosote glazing into Class III (glassy, tar-like) buildup that standard brushes won’t touch. We remove the cap, rotary-mechanically clean with a chainsaw head at controlled RPM, and upgrade to a Gelco or Famco high-pitch cap with a 4-inch minimum overhang.
- DuraFlex 30° and 45° elbow sets with creosote bridging. These factory elbows, especially in the 6-inch and 8-inch diameters we see in Bungalow Heaven conversions, create low-velocity zones where creosote spans the inner curve. Homeowners smell a chemical, acrid odor before they see smoke backup. We disassemble the elbow set where accessible, mechanically clean each segment individually, and verify draft with a digital manometer before reassembly.
- DuraFlex Light (aluminum) liners in exterior chase applications. Aluminum was specified for some 2017-2020 Pasadena townhome installations to cut cost. It doesn’t survive our summer attic temperatures above 140°F; we’ve found warped sections near the top third that trap condensation and accelerate corrosion. We document with photos, quote a 316Ti stainless replacement, and never recommend another aluminum run in a California exterior chase.
- DuraFlex tee connectors with cleanout door seal failure. The factory EPDM gasket on tee bodies installed 2014-2018 hardens in dry heat. Smoke leaks into the basement or crawl space, often misdiagnosed as a masonry crack. We replace with a high-temp silicone gasket rated to 500°F, verify with a smoke pellet test, and note the repair in your documented photo record under Haven Standard Clause 4.
Our DuraFlex Chimney Cleaning & Sweep Process

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Call intake with live person. We confirm your DuraFlex model or series if known, your address in Pasadena or nearby, and schedule a Level 2 inspection with camera. You’ll receive a text when your technician is en route.
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NFPA 211 Level 2 camera-scan inspection. Corrine Halstead and our technicians run a 360-degree camera the full flue length. We show you the footage before quoting anything. The camera doesn’t negotiate - it just shows what’s there.
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Written scope, written price, written warranty. Haven Standard Clause 1: you get all three before work starts. For DuraFlex components, we specify OEM versus quality aftermarket parts (HeatShield for refractory repair, Olympia Chimney for compatible stainless components) and explain the trade-off.
- 4
Mechanical cleaning and component service. Rotary or manual cleaning based on creosote class. Elbow disassembly, cap replacement, or tee resealing as scoped. No work outside the written agreement.
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Post-service testing and documentation. Draft test with digital manometer, smoke test on any sealed component, then a photo record uploaded to your job file. Haven Standard Clause 4 requires this archive; we’ve done it on every job since 2009.
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365-Day Done Right Promise activation. Your warranty is stamped and dated. If it’s not done right, we make it right.
Before
AfterWhat DuraFlex Chimney Cleaning & Sweep Costs in Pasadena
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Annual sweep, DuraFlex liner (good condition) | $189 - $265 | Height of chimney, roof access difficulty, creosote class (I vs. II) |
| Level 2 inspection with camera scan | $249 - $349 | Number of appliances, chase construction, documentation needed for insurance or real estate |
| Class III creosote removal, DuraFlex Pro or SW | $425 - $675 | Extent of glazing, elbow disassembly required, cap replacement |
| Tee connector reseal or minor component | $180 - $320 | Parts accessibility, gasket vs. full tee body replacement |
| Partial reline, DuraFlex-compatible 316Ti | $1,200 - $2,400 | Linear feet, diameter, number of bends, termination type |
Every estimate is free, in writing, and includes no obligation. We also provide a Free Second Opinion on any competitor’s written quote. Call (213) 459-6058 for an exact quote on your DuraFlex system.
Why Pasadena Homeowners Call Level Two Chimney Pasadena for DuraFlex Work

We’ve inspected and cleaned more than 38,000 chimneys since 2009, and a growing share of our Pasadena calls involve DuraFlex components installed during the 2015-2020 liner boom. Corrine Halstead grew up in Queens, learned the trade through Queensborough Community College’s building maintenance and HVAC programs, and put in years on actual rooftops before establishing our Pasadena operation. She and our crew know the local housing stock - the craftsman properties near Bungalow Heaven with their odd chase dimensions, the postwar ranch conversions with exterior aluminum runs that failed early - and we source materials through our Haven buying network specifically to keep customer prices honest.
Our technicians are background-checked, uniformed, and licensed; their license number appears on every page. You get a named tech, a text when they’re on the way, and a documented photo record when the job is done. We also service HeatShield and Gelco systems, so if your DuraFlex installation needs a compatible component we don’t stock, we know where to get it without marking up through three middlemen.
FAQs
No, professional cleaning by a qualified chimney sweep does not void your DuraFlex warranty. The warranty covers manufacturing defects, not maintenance neglect - and neglect is what voids it. We document our work with photos and a written report, which actually supports any future warranty claim you might need. Call (213) 459-6058 to schedule documented maintenance.
We source both. For some DuraFlex components, OEM is the right choice; for others, we use quality aftermarket parts from Olympia Chimney or Famco that meet or exceed the original spec at a lower landed cost. We name the manufacturer in your written quote before work starts, under Haven Standard Clause 1, so you know exactly what you’re paying for.
The camera scan decides. If we find isolated seam separation, a localized sleeve repair may suffice. If the corrosion or damage exceeds 30 percent of the run length, or if the original material is aluminum in an exterior chase, we quote replacement. We show you the footage and explain the threshold; nothing is recommended without camera evidence you can see for yourself. Call (213) 459-6058 for a free inspection.
NFPA 211 recommends annual inspection, with cleaning frequency based on use and fuel type. In Pasadena, where many DuraFlex liners serve occasional decorative gas sets or shoulder-season wood fires, every 12-18 months is typical for light use, annually for regular wood burning. Our dry summers and Santa Ana wind events don’t increase creosote buildup, but they do stress termination caps and seals - another reason annual camera inspection matters.
Class I and II creosote becomes Class III glaze, which restricts draft and increases chimney fire risk. On DuraFlex SW and Pro liners, we’ve seen glaze thick enough to reduce effective flue diameter by 20 percent. Carbon monoxide spillage becomes a real hazard before smoke backup becomes obvious. The cost of deferred maintenance always exceeds the cost of annual service. Call (213) 459-6058 for a free estimate - we’ll show you exactly what’s in your flue.
Written by Corrine Halstead, Owner, Level Two Chimney Pasadena at Level Two Chimney Pasadena, serving Pasadena and nearby areas.





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