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.
Before
After
Before
After
Before
AfterDuraFlex Chimney Cap & Crown in Bangor: What to Know First
We provide independent DuraFlex chimney cap and crown service in Bangor, with most DuraFlex cap replacements and crown repairs completed in a single visit after a Level-2 camera inspection. Our upfront pricing means the estimate we give is the invoice you pay, and every job carries our 90-Day Done Right Promise in writing. If you own a DuraFlex system and suspect water intrusion, rust streaking, or crown cracking, call us at (610) 609-7634. A live person answers 24 hours a day, and estimates are free.
How DuraFlex Products Fail - and How We Fix Them
- DuraFlex SW stainless flex liners with factory termination caps - The SW series cap uses a lighter-gauge mesh screen than comparable HeatShield or Gelco assemblies. In Bangor, where late-winter ice dams send meltwater backward against the flue, that mesh corrodes from the inside out at the weld points. We see this on homes near the Bushkill Creek drainage where freeze-thaw cycles run longer. We replace with a DuraFlex-compatible Gelco or Famco cap with 18-8 stainless mesh, or source OEM if the homeowner prefers.
- DuraFlex 316Ti relining caps on oil-fired systems - The 316Ti cap’s base ring was redesigned in 2019, but pre-2019 units still in service have a known gap where the base meets the flue tile. Sulfur-laden exhaust wicks through, crystallizes, and spalls the crown concrete from beneath. We document this with camera photos, then install a post-2019 OEM base ring or a Copperfield adapter that seals the gap and preserves the liner warranty.
- DuraFlex aluminum caps on historic Bangor conversions - Older homes near the Bangor Borough Historic District sometimes got aluminum DuraFlex caps as a cost shortcut during 1990s conversions. Aluminum does not survive Bangor’s pH-shifted rain, which runs acidic through spring pollen season. The caps pit through in 4-7 years. We upgrade to stainless or copper, matching the flue count and spark-arrestor requirements without modifying the existing DuraFlex liner.
- DuraFlex multi-flue caps with integrated dampers - The damper linkage on DuraFlex multi-flue caps binds when creosote migrates from an unswept flue into the cap housing. Homeowners smell smoke on startup or see rust dripping from the cap skirt. We disassemble the cap, clean the linkage with rotary tools, and reassemble with anti-seize compound. If the damper plate is warped from heat, we source the exact DuraFlex replacement or a Famco cross-reference.
- DuraFlex crown wash failure behind the cap flange - DuraFlex caps mount with a compression band that bears on the crown surface. When the crown wash cracks, water runs under the flange and rots the top course of brick. This is not a cap problem, but it destroys the cap seal. We remove the cap, repair the crown with HeatShield CrownCoat or a Portland-based slurry formulated for Pennsylvania freeze-thaw, then remount with a new compression gasket.
Our DuraFlex Chimney Cap & Crown Process
- 1
Call and schedule. A live person answers, day or night. We ask about your DuraFlex model if you know it, the fuel type, and what you’re seeing. We book a Level-2 inspection with camera.
- 2
Inspection and documentation. Our technician runs a camera the full flue length, photographs the cap, crown, and any deterioration. You see the photos on a tablet before we write the estimate. Russell Haines still carries the inspection mirror he bought at Los Angeles Trade-Technical College, but the camera does the talking now.
- 3
Parts decision. We stock DuraFlex-compatible caps and crowns from Gelco, Famco, and Copperfield. If your DuraFlex warranty requires OEM, we order it. If not, we recommend the part that solves the problem for the longest interval, with pricing for both.
- 4
Repair or replacement. Most DuraFlex cap and crown jobs finish in one visit. Crown repairs cure 24 hours, so we schedule a return only when the crown coating requires it.
- 5
Post-job test and photos. We run the camera again, verify the cap seal with a smoke pellet, and leave you with dated photos and a written verdict.
- 6
Guarantee in writing. The 90-Day Done Right Promise covers parts and labor. If something is not right, we make it right. No paperwork to dig up, no argument.
What DuraFlex Chimney Cap & Crown Costs in Bangor
| Service | Typical Range |
|---|---|
| DuraFlex single-flue cap replacement (stainless) | $280 - $450 |
| DuraFlex multi-flue cap replacement with damper | $520 - $780 |
| Crown repair, localized (under 3 sq ft) | $340 - $520 |
| Crown coating / rebuild (full surface) | $680 - $1,200 |
| Cap + crown combined (common on older systems) | $890 - $1,450 |
What moves the price: accessibility (steep roof, height above 28 feet), whether the flue tile needs rebuilding before the cap seats, and whether we use OEM DuraFlex parts or quality aftermarket. We give the exact number before any work starts. Call (610) 609-7634 for a free estimate.
Why Bangor Homeowners Call Hearthstone Chimney Co. for DuraFlex Work
We are an independent DuraFlex service provider, not a factory-authorized dealer. That means we choose the part that fits your chimney, not the part that fits a quota. Our 90-Day Done Right Promise is in writing with no arguing, governed by our K.E.Y.S. code: Krafted right, Every time, Your home first, Standing behind it. Our technicians are background-checked, uniformed, and trained on DuraFlex, HeatShield, and Gelco systems. Most jobs finish in one visit. And when you call (610) 609-7634, a live person answers, 24 hours a day. A clean flue does not need a sales pitch.
FAQs
No, if the replacement is performed by a qualified technician using DuraFlex-approved parts or equivalent aftermarket components rated for your liner series. We document the part number and installation method so your warranty record stays clean. Call (610) 609-7634 if you want us to review your warranty terms before booking.
A quality stainless DuraFlex or compatible cap lasts 15-20 years in Bangor’s climate if swept annually. Aluminum caps fail in 4-7 years. The difference is the freeze-thaw cycling and spring acidity we get near the Delaware River watershed. We can tell you which material you have during a free inspection.
Mesh screens and damper linkages can often be repaired. Cracked or warped cap bases, and any cap with rust holes, need replacement. We show you the camera photos and give you both options with prices. No work happens until you approve the estimate.
We stock common DuraFlex-compatible caps from Gelco, Famco, and Copperfield. OEM DuraFlex parts ship in 3-5 business days. For urgent water intrusion, we can install a quality aftermarket cap immediately and swap to OEM later if you prefer.
Not always. If the crown is sound and the leak is at the cap flange, we reseal or replace the cap. If the crown is cracked or spalled, the cap will leak again whatever we do. Our camera inspection shows you which it is. Call (610) 609-7634 for a free estimate.
Written by Russell Haines, Owner, Hearthstone Chimney Co. at Hearthstone Chimney Co., serving Bangor and nearby areas.