Sweep & inspection
Caps & crowns
Flue relining
Masonry repair
Gas fireplace serviceLevel 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 Inspection in Hempstead: What to Know First
Flint Chimney Co Hempstead provides independent DuraFlex chimney inspection across Hempstead, NY, typically completing a full camera inspection and written condition report within 60 to 90 minutes of arrival. A Level 2 camera inspection on a DuraFlex-lined chimney runs $249 to $399 depending on flue height and access, and the written price is set before we touch a ladder. We are not affiliated with DuraFlex, which means we call what we see without worrying about a manufacturer’s warranty rep looking over our shoulder.
This page is for Hempstead homeowners who own a DuraFlex liner or prefabricated chimney system and want an inspection that actually tells them something useful. If you have water stains near the fireplace, a metallic smell after rain, or a home inspector flagged the flue, call (516) 559-6922 and we’ll schedule a visit.
How DuraFlex Products Fail – and How We Fix Them
DuraFlex makes solid products, but every liner system has weak points that show up over years of Nassau County weather cycles. We’ve inspected enough of them across Hempstead to know exactly where to look and what actually matters. Here are the five failure modes we see most often on DuraFlex systems:
- DuraFlex 316L liner seam separation at the furnace connection. The stainless corrugation flexes every time the furnace kicks on and off. After 8 to 12 years of thermal cycling, the seam near the appliance connector can open up. We spot this with a camera inspection before it becomes a carbon monoxide problem, then quote a proper reconnection or a short liner section replacement with the right DuraFlex connector.
- Pitting corrosion at the rain cap on DuraFlex Pro systems. Hempstead gets real coastal weather, and salt air accelerates the kind of pitting that looks like tiny pinpricks on the cap screen. You won’t see it from the ground. We will on camera. The fix is straightforward: replace the cap before moisture starts working its way down the liner walls.
- Creosote glaze buildup inside DuraFlex smooth-wall liners. Smooth-wall sounds like it should stay cleaner than corrugated, and it mostly does. But when a wood stove runs low and slow, creosote glazes onto the surface and hardens. It doesn’t brush out. We identify the grade of buildup on camera and, if it’s glaze, recommend a professional chemical treatment followed by a thorough mechanical sweep, done carefully so the liner isn’t scored.
- Sagging or kinked DuraFlex sections in offset chimneys. Hempstead has plenty of older homes with offset flue paths. When a liner is pulled through a tight offset during installation, it can kink or sag. Over time, that restriction worsens and the draft weakens. Our camera tells us if the liner is still round, still continuous, or if it needs a section replacement. We never guess at this.
- DuraFlex liner-to-terracotta gap issues on older Hempstead homes. Many local chimneys were relined with stainless because the original clay tiles were cracked. But if the original installer didn’t insulate properly between the old terracotta and the new liner, condensation forms. We see this on camera as a dusty white residue on the liner exterior or a dark staining pattern inside. That’s corrosion-in-progress. We recommend the correct insulation retrofit before it breaks through the wall.
Styles & brands we work with





Our DuraFlex Chimney Inspection Process
Every DuraFlex inspection we do in Hempstead follows the same documented sequence. No shortcuts, no skipped steps. Here’s what a typical call looks like:
- 1
Call and schedule. You talk to a live person, day or night. We set a two-hour arrival window and Hank Delano’s crew shows up inside it.
- 2
Written price before work starts. We confirm the inspection level, hand you a written price, and don’t add anything to it. The number you approve is the number you pay.
- 3
Visual exterior check. We inspect the cap, crown, flashing, and visible liner from the roofline, looking for rust, pitting, or storm-related shifting that’s common on Long Island.
- 4
Camera inspection of the interior flue. This is where DuraFlex inspections earn their value. We run a high-resolution camera down the entire liner length, documenting every seam, connection point, and the liner wall itself. You see the footage with us and get a written photo report.
- 5
Repair quote if needed. If we find an issue, we tell you plainly whether it’s a repair-now situation or a monitor-and-recheck situation. We specify parts by brand: DuraFlex when the job calls for original-spec stainless, or HeatShield or Gelco when a different material genuinely fits the chimney better.
- 6
Cleanup and guarantee. We protect the work area, leave the home the way we found it, and if any repair is done, it’s covered by the 365-Day Done Right Promise in writing. If a covered repair fails within a year, we return at no charge.
See the difference
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After
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AfterWhat DuraFlex Chimney Inspection Costs in Hempstead
Here are the real numbers for the DuraFlex inspection and repair scenarios we see most often in Hempstead:
| Service | Typical Price Range |
|---|---|
| Level 1 visual inspection (no camera) | $129 – $189 |
| Level 2 camera inspection with written report | $249 – $399 |
| DuraFlex rain cap replacement | $185 – $320 |
| DuraFlex connector repair at the appliance | $275 – $450 |
| Full DuraFlex liner replacement (varies by flue height) | $2,400 – $4,800 |
What moves the price: roof pitch and access, flue height, whether we need a lift or can work from a ladder, and how much creosote or debris has to be cleared before the camera can do its job. If you call for an estimate, we’ll give you a real number, not a vague “it depends.” Call (516) 559-6922 for a free estimate on your Hempstead home.
Why Hempstead Homeowners Call Flint Chimney Co Hempstead for DuraFlex Work
Hank Delano learned this trade the long way, starting at Los Angeles Trade-Technical College and running chimney crews across Nassau County for the better part of two decades. He’s put in steady work right here in Hempstead, including the Fulton neighborhood, and his approach hasn’t changed: clean inspections, straight answers on liner condition, and no quoting work a chimney doesn’t need.
The flue tells the truth. You just have to know how to read it.
That’s what we do. Our technicians carry the camera, show you the footage, and explain what it means in plain English. We reference The Garrison Standard, which is the documented process every Garrison Partners location follows. Written price before any work. A full-year written guarantee on every repair. And if a covered repair fails within that year, we come back and make it right at no charge.
We also work with the other major relining systems, including heat-cured HeatShield and Gelco ceramic coating, so if your DuraFlex liner has a problem that calls for a different material, we’ll quote you honestly on the best option rather than forcing a brand.
FAQs
No. A proper camera inspection performed by an independent DuraFlex service provider like Flint Chimney Co Hempstead does not void your manufacturer warranty. In fact, many DuraFlex warranty claims require documented inspection records, so skipping your annual check is what actually puts coverage at risk. We recommend keeping the written camera inspection report we provide after every visit.
Yes, whenever the job calls for original-spec DuraFlex components, we quote OEM DuraFlex parts specifically. For certain aging or discontinued liner models, we may recommend a quality aftermarket equivalent if the original part is no longer made. You’ll know which one we’re quoting and why before any work is approved.
Once a year if the chimney is actively used during the burning season, or before the first fire of the season if it hasn’t been swept in the preceding twelve months. Hempstead’s humidity and salt air mean we recommend owners stay on the annual schedule rather than stretching it to every two or three years. And if you just moved into the home, book an inspection immediately regardless of what the previous owner said.
Yes. That’s exactly what the camera inspection tells us. A liner that’s dirty comes back with creosote or soot on the walls and we quote a sweep. A liner that’s pitted, perforated, or separating at the seams comes back with visible structural damage and we quote a replacement. You see the same camera feed we see, so there’s no mystery. Call (516) 559-6922 to set up an inspection and get answers in writing.
Written by Hank Delano, Owner, Flint Chimney Co Hempstead at Flint Chimney Co Hempstead, serving Hempstead and nearby areas.