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 Bedford: What to Know First
We provide independent DuraFlex chimney cleaning and sweep services throughout Bedford, with most Level 1 and Level 2 inspections completed in a single visit and upfront pricing agreed before we start. A standard DuraFlex sweep with inspection runs $225-$350 in this market, and we do not recommend work you cannot see for yourself on camera. This page is for Bedford homeowners who have a DuraFlex liner, cap, or connector and need honest cleaning, inspection, or maintenance without pressure to buy what you do not need. Call (914) 409-9387 anytime; a live person answers, even at midnight on a Sunday.
How DuraFlex Products Fail - and How We Fix Them
- DuraFlex SW cracked flex sections from thermal cycling. The SW series, common in Bedford’s 1980s and 1990s chimney relines, uses 316Ti stainless that can work-harden at the flex points after fifteen to twenty years of twice-a-week fires. We find circumferential cracks at the corrugation valleys during Level 2 camera inspection, mark the exact footage, and replace only that section with matching DuraFlex SW or a compatible 316Ti segment rather than selling you a full reline.
- DuraFlex AL accumulation of sulfate crust in oil-to-gas conversions. Bedford Village and the surrounding horse-property zone have dozens of homes that switched from oil to propane or natural gas but kept the original AL aluminum liner. The AL series was never meant for condensing gas flue temperatures. We pull white sulfate deposits during sweeping that restrict draft and corrode the wall from inside, then document whether the liner is still serviceable or needs replacement with a gas-rated DuraFlex product.
- DuraFlex DVL direct-vent connector separation at twist-lock joints. The DVL double-wall line shows up in Bedford’s newer fireplace inserts and factory-built chimneys. Twist-lock joints can back out from vibration during cleaning or from thermal expansion if they were not fully seated at install. We check engagement with a borescope, reseat with proper twist-lock torque, and replace damaged male or female ends with OEM DuraFlex DVL components so the warranty stays intact.
- DuraFlex reliner ovalization in tight Bedford flues. Many stone-and-timber colonials near Bedford Village have flue tiles with interior dimensions under six by six inches. The DuraFlex reliner is pulled through under tension, and in tight offsets the ovalization can exceed ten percent, creating a creosote trap at the flat spot. We measure ovalization during camera inspection and, if it is beyond spec, recommend a rigid DuraFlex RLS section at the offset rather than pretending the flex liner will sweep clean.
- DuraFlex termination cap screen clogging from Bedford’s heavy oak and hickory. Bedford burns dense hardwoods that throw more particulate than softwood regions. The factory DuraFlex cap screen with 3/4-inch mesh plugs with glazed creosote in two to three seasons, choking draft and backing smoke into the house. We remove and ultrasonic-clean the screen during annual sweep, or upgrade to a Gelco or Famco cap with larger mesh and a hinged top for easier owner access.
Our DuraFlex Chimney Cleaning & Sweep Process
- 1
Call and schedule. A live person answers (914) 409-9387, asks what DuraFlex product you have if you know it, and books a window. We send a confirmation text with Russell Haines’s direct contact.
- 2
Arrival and protection. Our technician lays floor protection, inspects the appliance and chimney exterior, and confirms the DuraFlex model from any labels or prior installation marks.
- 3
Level 1 or Level 2 camera inspection. We run a chimney camera and photograph every DuraFlex joint, cap, and flex section. You see the images on a tablet as we find them.
- 4
Sweep and mechanical cleaning. We select poly or wire brushes sized to your DuraFlex liner diameter, spin with a rotary driver at controlled RPM to avoid wall damage, and collect all debris in a HEPA vacuum.
- 5
Parts decision and documentation. If we find a DuraFlex component that needs replacement, we show you the damage, quote OEM or quality aftermarket options with warranty implications explained, and get written approval before ordering.
- 6
Final test and guarantee. We perform a draft test, issue a written sweep report with photos, and the job is covered by our 90-Day Done Right Promise - in writing, no arguing.
What DuraFlex Chimney Cleaning & Sweep Costs in Bedford
| Service | Typical Range |
|---|---|
| Level 1 DuraFlex sweep and basic inspection | $225 - $285 |
| Level 2 DuraFlex sweep with camera inspection | $325 - $395 |
| DuraFlex cap screen cleaning or replacement | $85 - $175 |
| DuraFlex SW section replacement (per 3-ft segment) | $180 - $260 |
| DuraFlex DVL twist-lock joint reseat and seal | $120 - $195 |
What moves the price: height of chimney (two-story Bedford colonials run higher), accessibility of the cleanout, severity of creosote buildup, and whether we need to return with a specific DuraFlex OEM part. We give you the full number before any work begins. Call (914) 409-9387 for a free estimate - the number we quote is the number on the invoice.
Why Bedford Homeowners Call Hearthstone Chimney Co. for DuraFlex Work
We have been in this area over 42 years, and we plan to be here when your grandchildren own the house. That changes how we treat a DuraFlex job. Our 90-Day Done Right Promise is in writing, not a handshake - if it is not right, we come back, no paperwork, no arguing. Our technicians are background-checked, uniformed, and trained on DuraFlex, HeatShield, and Gelco systems, so they recognize when a DuraFlex problem is actually a venting design issue that needs a different brand’s solution. We also carry Olympia Chimney and Famco components for situations where a straight DuraFlex replacement is not the best fix. Photos you can see, a plain-English verdict. A square deal: no surprises on the bill.
FAQs
No. As an independent DuraFlex service provider, we use warranty-safe practices and OEM or compatible parts documented to manufacturer spec. We keep photos and part numbers on file if you ever need warranty support. Call (914) 409-9387 and we will walk you through what your specific DuraFlex warranty requires.
Once per year if you burn regularly through the heating season, per NFPA 211. Bedford’s dense oak and hickory produce more creosote than softer woods, so heavy users sometimes need mid-season inspection. We will tell you honestly if you are on that schedule or can stretch to eighteen months. Call (914) 409-9387 to book around your burning season.
We stock common DuraFlex SW, DVL, and cap components, and our distributor relationship gets most special orders within three to five business days. If your chimney is unsafe to use in the interim, we explain that plainly and can often install a temporary safe configuration while we wait. Call (914) 409-9387 to check current availability for your model.
The camera tells the story. We look for through-wall cracks, excessive ovalization, or corrosion patterns that compromise structural integrity. If the damage is localized to one or two sections, we repair. If the liner has multiple failure zones or is the wrong alloy for your current fuel, we recommend replacement and show you exactly why. Call (914) 409-9387 for a free camera inspection and an honest verdict.
Glazed creosote builds in the flex corrugations where brushes cannot reach easily, increasing chimney fire risk and restricting draft. In DuraFlex AL liners, sulfate accumulation accelerates wall thinning. Neither failure gives warning before it becomes dangerous. The sweep itself is preventive, not corrective - much less expensive than the emergency call. Call (914) 409-9387 to get ahead of it.
Written by Russell Haines, Owner, Hearthstone Chimney Co. at Hearthstone Chimney Co., serving Bedford and nearby areas.





Before
After
Before
After
Before
After