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 Cap & Crown in Commack: What to Know First
We handle independent DuraFlex chimney cap and crown work across Commack, including cap installation, crown coating, multi-flue caps, and full crown rebuilds. Most jobs are done in a single visit, and you’ll get a straight price before anyone climbs a ladder. If you’re a DuraFlex owner in Commack with a rusted cap, a cracked crown, or water where it shouldn’t be, call (631) 502-3612 and Wendell or a member of his crew will tell you what’s actually going on.
This page is for homeowners in Commack who own a DuraFlex chimney liner or cap system and want someone who knows the brand well enough to work on it correctly. We’re a local, owner-operated shop, not a franchise. We’ve worked DuraFlex products in Suffolk County for over two decades, and we’ve seen every way they fail.
How DuraFlex Products Fail - and How We Fix Them
- DuraFlex Pro stainless caps rusting at the base seam. The DuraFlex Pro line uses a stainless body, but the base collar and screen clips on some older runs were mild steel. In Commack’s coastal air and wet winters, that seam corrodes first. We see it constantly on homes in Burr Farms. The fix is a full cap replacement with a correctly matched collar, not a patch job that fails again in two seasons.
- Cracked crowns above DuraFlex Al29-4C liners. The Al29-4C liner is a workhorse for gas and oil flues, but the concrete crown poured around it at installation was often mixed too wet or sloped wrong by the original installer. Water pools, freezes, cracks, and then runs down the outside of the liner chase. We pull the old crown, repour with the right mix and slope, and coat it so it sheds water away from the liner penetration.
- Multi-flue DuraFlex caps with crushed screen mesh. Multi-flue caps on DuraFlex systems take a beating in Commack. Squirrels, heavy wet snow, and the occasional branch all land on that mesh. Once it dents or tears, embers escape and animals move in. We replace the screen and re-secure the cap frame, or swap the whole unit when the frame is bent past saving.
- DuraFlex oval-to-round adapter flashings leaking at the roofline. This one is specific: DuraFlex oval rigid liners that transition to round flex at the top need a flashing that can handle that geometry. A generic flashing will not seat right, and Commack rain will find the gap. We keep the correct adapter flashings on the truck and replace them with the same geometry DuraFlex intended.
- Glazed creosote chewing through DuraFlex FlexKing Pro caps. FlexKing Pro is fine for wood-burning, but no cap survives third-degree creosote forever. The acidic glaze eats the screen and weld points. When we see a DuraFlex cap that looks like it got dipped in tar, the cap is only half the story. We’ll show you the camera footage of the liner and tell you if it’s a cap job, a sweep, or something deeper. We don’t sell work the chimney doesn’t need.
Our DuraFlex Chimney Cap & Crown Process
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Call and talk to a person. You call (631) 502-3612. A live person answers. We ask what you’re seeing, get the basic details, and set a time that works for you. No call center.
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On-site inspection with the camera. Wendell or one of his crew arrives in uniform. We run a camera down the flue and walk the roof. We’re looking at the cap, the crown, the flashings, and the liner. You see the footage before anything gets quoted.
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Plain-English verdict. We tell you what’s failing, what can wait, and what needs doing now. If the crown is sound and the cap just needs a new screen, that’s what we say. If the cap is fine and the crown is the problem, we say that too.
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Parts decision: OEM or quality aftermarket. For DuraFlex caps and crowns, we use DuraFlex parts when the warranty or fit demands it. When an aftermarket part matches or exceeds OEM spec and saves you real money, we tell you that and let you choose. We’re an independent service provider, not a DuraFlex dealer, so our loyalty is to you.
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The fix, done right. Replacement, coating, rebuild, whatever the job calls for. We work clean, we protect the roof, and we don’t leave debris in your gutters.
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The test and the 90-Day Done Right Promise. We light a test fire or run the system to verify draft and fit. Every DuraFlex job gets our written 90-Day Done Right Promise. If it’s not right, one call brings us back at no cost.
What DuraFlex Chimney Cap & Crown Costs in Commack
Here’s straight talk on pricing for DuraFlex cap and crown work in Commack. These are the numbers we quote most often, but every chimney is different and the only way to know your real number is a look at the actual flue.
- DuraFlex cap replacement, single flue: $180 to $420, depending on the model and the collar work needed
- Multi-flue cap replacement: $450 to $900, driven by chase width and screen condition
- Crown coating only: $250 to $550, when the crown is sound and just needs sealing
- Crown repair with repour: $600 to $1,400, when the old crown is cracked through and must come out
- Full crown rebuild with custom form: $1,200 to $2,500, for fully failed crowns on larger chases
What moves the price: roof pitch, chase height, whether the liner adapter needs replacing, and whether we’re matching an existing DuraFlex cap color or finish. You’ll get the number before work starts, in writing. No add-ons at the door. Call (631) 502-3612 for a free estimate.
Why Commack Homeowners Call Top Hat Chimney for DuraFlex Work
We’ve been working Suffolk County chimneys since 1999. Wendell Pike grew up in San Diego, but he’s spent the better part of two decades running crews through Commack, including plenty of roofs in the Burr Farms neighborhood, and there’s not much he hasn’t pulled out of a flue. When you call Top Hat Chimney, you get a locally owned, owner-operated shop with a published address and a license number. You also get the 90-Day Done Right Promise in writing on every job, and a live person on the phone any hour of the day or night. We work DuraFlex every season, and when a liner or cap needs something we don’t stock, we can also pull from HeatShield and Gelco lines to get the right fix. We’re not tied to one brand. We’re tied to doing the job right.
FAQs
Yes, but you need to understand how warranties actually work. Most DuraFlex product warranties cover the part itself, not the labor to install it, and they typically require the part to be installed correctly. As an independent DuraFlex service provider, we install DuraFlex parts to spec, which is what matters for warranty coverage. We’ll also tell you plainly if a quality aftermarket part is a better value for your situation. Warranty-safe doesn’t always mean OEM-required. Call (631) 502-3612 if you want us to look at what you have and tell you the straight story.
Most single-flue DuraFlex cap replacements are done in one visit, usually within three to five business days of scheduling. Multi-flue caps or custom sizes may take a week or two if the part isn’t already on the truck. If your cap is failing and rain is getting in, tell us when you call and we’ll prioritize you.
It depends on the crack pattern and depth. Hairline cracks in an otherwise sound crown can often be sealed with a proper crown coat and will hold for years. Wide cracks, crumbling edges, or a crown that’s sinking mean a repour or full rebuild. We’ll show you the cracks on camera and give you an honest recommendation. If it just needs coating, we won’t try to sell you a rebuild. If it needs a rebuild, a coating won’t hold. Call us and we’ll tell you which one you have.
If the frame and collar are sound, we can replace the screen mesh by itself. You’ll save the cost of a full cap. But if the frame is bent, the collar is rusted at the base seam, or the weld points are failing, a new cap is the honest fix. Replacing mesh on a dying frame is throwing money away. We’ll show you the condition before you spend anything.
Written by Wendell Pike, Owner, Top Hat Chimney at Top Hat Chimney, serving Commack and nearby areas.