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 Cap & Crown in Framingham: What to Know First
We provide independent DuraFlex chimney cap and crown service in Framingham, typically scheduling within a week and completing most cap replacements or crown repairs in a single visit. Every job starts with a written price before work begins, backed by our 365-Day Done Right Promise. This page is for Framingham homeowners who already have DuraFlex liner or venting products and need cap or crown work done right the first time. Call (508) 850-0489 to speak with a live person, or keep reading to see what DuraFlex-specific problems we find most often.
How DuraFlex Products Fail - and How We Fix Them
- DuraFlex SW (stainless wall) liners with factory cap separation. The SW series uses a lighter-gauge cap attachment ring than competing lines, and after five to seven winters of Framingham’s freeze-thaw cycling, the mechanical joint between cap and flue can work loose. We find this most often on homes near Cushing Memorial Park where mature oaks drop heavy debris that accelerates cap fatigue. We replace with a heavier-gauge DuraFlex-compatible cap or, if the flue lip is still sound, a Gelco multi-flue cap with a deeper skirt.
- DuraFlex Pro oval liners with crown wash intrusion. The Pro oval’s low-profile termination sits close to the crown surface, so when the crown wash cracks, water tracks directly into the annular space rather than running off. In Framingham’s clay-heavy soils, that moisture wicks through the masonry and stains interior chimney breasts. We open the crown to the structural slab, re-pitch with a cricket if needed, and reset the Pro termination with a bead of high-temp sealant plus a vented rain cap.
- DuraFlex AL (aluminum) caps galvanically corroded on gas conversions. Homeowners who converted oil to gas in the 2015-2020 window often kept their original AL cap, but gas exhaust condensate is more acidic and attacks the aluminum faster than oil soot ever did. We see this on split-levels near Butterworth Park where those conversions clustered. We spec a 304 stainless replacement from our Haven buying network, sized to the existing DuraFlex AL flue diameter without disturbing the liner below.
- DuraFlex DW (double-wall) telescoping sections with crown settlement. The DW telescoping joint gives installers flexibility on height, but if the crown settles even half an inch, the telescoping section compresses and the cap tilts, creating a gap on one side. Squirrels in Framingham’s oak canopy find that gap fast. We jack the assembly to true vertical, re-bed the crown, and install a locking-band cap that tolerates minor future movement.
- DuraFlex relining jobs with aftermarket cap mismatch. A previous installer used a generic cap with a too-small collar on a DuraFlex 6-inch round liner; the cap blew off in a March nor’easter and the homeowner didn’t notice for weeks. Water entered, froze, and spalled the top course of brick. We document the flue dimensions with the camera, source the correct DuraFlex or Olympia Chimney cap through our network, and rebuild the top course if spalling is structural.
Our DuraFlex Chimney Cap & Crown Process

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Call and schedule. A live person answers, notes your DuraFlex product line if you know it, and books a Level 2 inspection with camera.
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Camera-scan inspection. We run the camera down the flue to verify liner condition, then photograph the crown, cap, and surrounding masonry from the roof. Clause 4 of the Haven Standard requires this photo record on every job.
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Written price and scope. Corrine Halstead or a named technician delivers a written price, written scope, and written warranty before any work starts. No exceptions.
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Parts decision. We stock common DuraFlex caps and crowns, but if your series is older or uncommon, we source OEM or quality aftermarket through our Haven buying network, typically within 48 hours.
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Repair and test. We complete the cap or crown work, run a smoke test or mirror check to verify draft, and photograph the finished condition.
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Documentation and guarantee. You receive the photo record, the final invoice matching the written price, and the 365-Day Done Right Promise in writing.
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| Service | Typical Range |
|---|---|
| DuraFlex cap replacement (standard stainless) | $280 - $450 |
| DuraFlex cap replacement (multi-flue or custom) | $420 - $680 |
| Crown repair (crack sealing, re-pitch) | $350 - $550 |
| Crown rebuild (partial, with form and pour) | $780 - $1,400 |
| Crown coating (HeatShield or equivalent) | $520 - $890 |
What moves the price: accessibility (steep roof, height, proximity to Cushing Memorial Park’s tree canopy), extent of masonry damage beneath the crown, and whether the DuraFlex termination requires a specialty adapter. We do not recommend crown rebuilds without camera evidence you can see for yourself. Call (508) 850-0489 for an exact quote - estimates are free.
Why Framingham Homeowners Call Level Two Chimney Framingham for DuraFlex Work

We’ve inspected more than 38,000 chimneys since 2009, and a surprising number of those in Framingham run DuraFlex products from the 2010-2018 relining boom. Corrine Halstead grew up in Queens, learned the trade through the masonry program at New York City College of Technology, and has spent the better part of two decades on Framingham roofs, including older colonials near Cushing Memorial Park that throw a surprise at every camera drop. The camera doesn’t lie, and neither does the written estimate.
Our technicians are background-checked, uniformed, and named before arrival, with license information on every page. If your DuraFlex part is discontinued, we pivot to HeatShield, Gelco, or Olympia Chimney equivalents through our Haven buying network, keeping your price honest. Every job carries the 365-Day Done Right Promise and a Free Second Opinion on any competitor’s written estimate.
FAQs
Using an independent DuraFlex service provider does not automatically void your warranty, but installing a non-DuraFlex cap may limit certain OEM claims. We source DuraFlex-compatible parts when warranty preservation matters to you, and we note the parts origin on your written invoice so you have a record. Call (508) 850-0489 if you need help interpreting your specific warranty terms.
Most standard cap replacements are completed in two to four hours, including the camera inspection and documentation. Crown repairs or rebuilds add time depending on cure requirements. We book a full day when masonry is involved, but you’re not charged for idle time.
We maintain cross-reference sheets for discontinued DuraFlex lines and stock adapters for common transitions. If no direct match exists, we spec a Gelco or Olympia Chimney equivalent with equal or greater gauge and venting capacity, documented in your written scope before work starts.
We classify crown damage by depth and pattern: hairline cracks sealed with elastomeric coating, spalling or delamination deeper than three-eighths inch requiring partial rebuild, and structural separation from the flue requiring full rebuild. The camera and photo record show you exactly which category you’re in before you decide. Call (508) 850-0489 for an exact quote - estimates are free.
Yes. Many Framingham homes have DuraFlex liners with HeatShield crowns or Gelco caps from previous work. We service mixed systems routinely and source parts for all major brands through our Haven buying network.
Written by Corrine Halstead, Owner, Level Two Chimney Framingham at Level Two Chimney Framingham, serving Framingham and nearby areas.





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