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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AfterDuraFlex Chimney Cleaning & Sweep in Bethlehem: What to Know First
We provide independent DuraFlex chimney cleaning and sweep services in Bethlehem, with most Level 1 and Level 2 inspections completed in a single visit and upfront pricing agreed before we book the job. A standard DuraFlex sweep and inspection for a Bethlehem home typically runs $180-$320, depending on creosote buildup and whether the flue needs camera evaluation. We do not quote low to get in the door and then add charges.
This page is for Bethlehem homeowners who have a DuraFlex stainless steel liner, DuraFlexPro, or DuraFlexSW in their chimney and need it swept, inspected, or cleared of creosote and soot. If you’re burning seasoned hardwood through a Bethlehem winter and haven’t had the flue looked at in twelve months, you’re due. Call us at (610) 595-5754 to book a free estimate.
How DuraFlex Products Fail - and How We Fix Them
- DuraFlexSW corrugated liners develop creosote pockets in the valleys. The helical corrugation that makes DuraFlexSW flexible also creates low spots where condensation gathers, especially in Bethlehem’s freeze-thaw cycles. We use polypropylene brushes sized to the liner’s exact inner diameter, not generic wire brushes that can snag the corrugation and leave residue behind.
- DuraFlexPro smooth-wall liners suffer from improper connector alignment at the tee. The seamless interior is excellent for draft, but if the installer didn’t seat the tee connection squarely, soot cakes at the offset and restricts flow. We disassemble, reseat with proper DuraFlex-compatible fasteners, and document the before-and-after with camera photos.
- DuraFlex 316Ti alloy liners show premature weld-seam corrosion when paired with unlined masonry above the smoke chamber. In Bethlehem’s older homes, particularly up around the historic Hill-to-Hill district, we’ve found this combination accelerates pinhole failure at the seam. We sweep the flue, camera the full length, and if the seam is compromised, we quote replacement with a HeatShield Cerfractory seal or a new Gelco liner - never a patch that voids your warranty.
- DuraFlex flexible liners flatten at offsets exceeding 45 degrees. The manufacturer’s spec allows offsets, but aggressive elbows in tight Bethlehem chimney throats reduce draft and cause smoky fires. During sweep and inspection, we measure the offset angle and, if it’s over spec, recommend a rigid DuraFlex section or a rebuilt smoke chamber to restore proper geometry.
- DuraFlex termination caps clog with glazed creosote in shoulder seasons. Bethlehem’s damp March and November weather creates the exact temperature differential that produces third-degree glazed creosote. We remove the cap, soak it in creosote modifier on the roof, and rotary-clean the flue before reassembly - not a quick brush-out that leaves the glaze intact.
Our DuraFlex Chimney Cleaning & Sweep Process
- 1
Call and schedule. A live person answers, 24 hours a day. We ask what you’re burning, how often, and when the flue was last swept. We quote a firm range before we book.
- 2
Arrival and protection. Our technician lays floor protection from the door to the hearth, inspects the appliance and connector pipe, and confirms the DuraFlex model and diameter from any tags or prior documentation.
- 3
Level 1 or Level 2 inspection. We camera the flue if there’s suspected damage, buildup beyond normal brushing, or if you’re buying or selling the home. Photos go on the report. You see what we see.
- 4
Sweep and creosote removal. We select brushes and rods matched to your DuraFlex liner type - poly for corrugated, fitted wire for smooth-wall - and rotary-clean to bare metal where possible. Glazed creosote gets chemical treatment.
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Reassembly and function test. We reconnect the tee, verify cap clearance, and run a draft test with the appliance hot. No guesswork.
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Written report and guarantee. You get photos, a plain-English verdict, and our 90-Day Done Right Promise in writing. If it’s not right, we come back. No paperwork, no arguing.
What DuraFlex Chimney Cleaning & Sweep Costs in Bethlehem
| Service | Typical Range |
|---|---|
| Level 1 DuraFlex sweep and basic inspection | $180-$240 |
| Level 2 DuraFlex sweep with full camera inspection | $260-$340 |
| Glazed creosote removal with chemical treatment | $320-$450 |
| DuraFlex tee disassembly and reseat | $180-$280 (plus sweep) |
| $89 Seasonal Tune-Up (standing offer, includes basic sweep) | $89 |
What moves the price: liner length (two-story Bethlehem colonials run longer), accessibility of the cleanout, degree of creosote buildup, and whether we find a defect that needs documenting. We do not upsell. If it needs doing, we’ll tell you. If it doesn’t, we’ll tell you that too. Call (610) 595-5754 for an exact quote - estimates are free.
Why Bethlehem Homeowners Call Hearthstone Chimney Co. for DuraFlex Work
We’ve been sweeping chimneys in Bethlehem and the Lehigh Valley for over 42 years. Russell Haines and our crew know the difference between a DuraFlexSW and a DuraFlexPro without reading the tag, and we stock the fittings and fasteners that keep us from making two trips.
Our 90-Day Done Right Promise means the job is backed in writing - if it’s not right, we make it right, no arguing. You get photos you can see and a plain-English verdict. We also work with HeatShield and Gelco systems, so if your DuraFlex liner has reached end of life, we can quote a compatible replacement without bringing in another contractor.
A live person answers the phone every hour of every day. Most jobs finish in one visit. The number on the estimate is the number on the invoice.
FAQs
No. As an independent DuraFlex service provider, we follow manufacturer-recommended cleaning practices using compatible tools and materials. The warranty covers defects in materials and workmanship, not who sweeps the flue, provided the sweep does not damage the liner with improper tools.
You need a camera inspection to know for certain. We run a camera the full length of the flue during a Level 2 inspection and show you the footage. Surface soot and light creosote need sweeping only; seam corrosion, flattening, or liner separation need repair or replacement. Call (610) 595-5754 to schedule - estimates are free.
We source OEM DuraFlex connectors, tees, and termination components when they’re available and appropriate. For some older DuraFlex installations in Bethlehem, OEM has been superseded, and we use quality aftermarket equivalents that meet or exceed the original spec. We tell you which we’re using and why before we order.
The National Fire Protection Association recommends annual inspection, with sweeping as needed. In Bethlehem, where homeowners often burn oak and maple through five-month heating seasons, we find most DuraFlex flues need sweeping every twelve months. Heavy use, green or softwood burning, or shoulder-season smoldering can shorten that interval. We’ll tell you where your flue stands after we inspect it.
Glazed creosote builds up, reducing draft and increasing the risk of chimney fire. In a stainless liner, intense chimney fire heat can warp or separate the liner at the seams. Carbon monoxide can back up into the living space if draft fails. These are real risks, not scare tactics. The good news is they’re preventable with annual service. Call (610) 595-5754 to book your free estimate.
Written by Russell Haines, Owner, Hearthstone Chimney Co. at Hearthstone Chimney Co., serving Bethlehem and nearby areas.