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.
Fast, Reliable Chimney Liner & Rebuild Across Brentwood
Chimney liner replacement or a partial rebuild in Brentwood typically runs $1,800-$5,400 depending on flue height, access, and how much masonry has to come apart. Most jobs take a day or two once we’re on site. If you’re calling from a 1950s Cape Cod off Wicks Road or a ranch near the Brentwood train station, we’re close by and the estimate is free. Call (934) 935-3847 and Wendell or one of his crew will pick up, day or night.
We’ve been inside more Brentwood chimneys than we can count. The homes here have a particular set of problems, and most of them start with the oil burner flue, not the fireplace. Before anyone touches your chimney, you should know exactly what’s failing, why, and what it will cost to fix. That’s how we work.
Why Top Hat Chimney Is Brentwood’s Preferred Chimney Liner & Rebuild Company
Top Hat Chimney isn’t a franchise that rotated into Long Island last spring. Wendell Pike started this company in 1999, and he still answers the phone himself most days. The number is (934) 935-3847. When you call about a liner or rebuild in Brentwood, you’re talking to someone who knows the difference between a split-flue Cape and a shared-flue ranch because he’s scoped hundreds of both.
Brentwood homeowners call us because a neighbor told them to. That’s how most of our work comes in, and it’s the best compliment we get. We quote a flat price before any tool comes off the truck, we show you the camera footage of your flue before recommending anything, and every job carries a 90-Day Done Right Promise in writing. If it’s not right, one call brings the crew back at no charge. Our Chimney Liner & Rebuild team covers all of Brentwood, from the neighborhoods near the Pilgrim State Hospital grounds up through the streets around the Brentwood Public Library.
Our Chimney Liner & Rebuild Services in Brentwood
Stainless Steel Liner
A stainless liner is the right call when the existing clay tiles are cracked beyond resurfacing or when a Brentwood homeowner wants a permanent fix they’ll never think about again. We use DuraFlex and Famco products, cut to your flue’s exact length and insulated where the old clay liner has failed. On a typical Brentwood ranch, a stainless liner install takes us most of one day.

Flexible Liner
Flexible liners earn their keep in Brentwood’s older Cape Cods where chimneys were built with offsets and turns that a rigid liner can’t follow. We pull the flexible liner through, tie it off at the top plate, and reconnect the oil burner with the proper tee and cap. If the flue serves both a furnace and a water heater, we size the liner for the combined BTU load and verify draft before we leave.

Liner Replacement
Liner replacement in Brentwood usually means pulling out the old clay tiles, or what’s left of them, and starting fresh. The homes here from the 1950s-70s were built with standard-weight clay liners that were never designed for decades of acidic oil exhaust. When we replace a liner on one of these homes, we camera-scope the entire flue first and show you exactly what we found. You make the call with the footage in front of you.

Partial Rebuild
A partial rebuild in Brentwood often starts above the roofline. Salt-laden air from the Great South Bay eats through mortar joints, then winter freeze-thaw cycles pop bricks loose. We rebuild the top courses, replace the crown, and install a proper cap. The chimney stays solid below, the leak stops, and we do not recommend a full rebuild unless the camera footage shows the structure itself is failing.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Brentwood
We install and service liners and components from HeatShield, Famco, and Copperfield, and we keep common parts on the truck so a Brentwood job doesn’t stall waiting for a shipment. HeatShield is the product we specify most often for Brentwood’s oil-flue liners that are cracked but still structurally sound. The material bonds to the old tile, seals the hairline cracks, and buys decades on a chimney that would otherwise need full replacement. If your furnace is venting through a flue we’ve scoped and found savable, HeatShield is usually the honest answer, not a new liner.
Common Chimney Liner & Rebuild Problems We See in Brentwood Homes
- Acidic oil condensate eating through 1960s clay tiles. Brentwood’s postwar homes were nearly all heated by oil, and Long Island has one of the highest per-capita rates of home heating oil use in the country. The sulfurous condensate from oil combustion degrades standard clay tiles from the inside for decades, leaving hairline cracks that most homeowners never know about until a CO detector goes off or a draft test fails.
- Shared flues between an oil burner and a fireplace. Many Brentwood Capes and ranches vent both the furnace and a decorative fireplace through one chimney, separated by a wythe of brick. When the oil flue’s liner breaks down, carbon monoxide can migrate across the dividing wall into the fireplace flue, and from there into the house.
- Salt-driven masonry erosion from Great South Bay moisture. Brentwood sits close enough to the water that humid, salt-laden air is constant. That moisture works into mortar joints, and the freeze-thaw cycle each winter widens those cracks. You’ll see it as spalled brick faces and crumbling crown edges on chimneys all over Brentwood.
- Rusted or missing topside components. The cap, crown, and top tiles take the brunt of the weather. On Brentwood homes where the crown has been neglected, water gets behind the flue tiles, freezes, and cracks them from the outside in. It looks like a small issue from the ground. It’s not.
Pricing for Chimney Liner & Rebuild in Brentwood, NY
A stainless steel liner replacement in Brentwood runs $2,200-$4,800 for a typical single-flue chimney on a 1950s-70s ranch or Cape Cod, including the tee, cap, and reconnection to the oil burner. HeatShield resurfacing runs $1,500-$3,200 depending on flue length and how much of the liner needs coverage. A partial rebuild above the roofline runs $1,800-$4,500 depending on how many courses come down and whether we’re rebuilding a crown. A full chimney rebuild in Brentwood can run $8,000-$18,000, but we will tell you plainly if the camera footage shows you don’t need one. Most homeowners who think they need a full rebuild actually need a partial rebuild and a liner. Whatever the job, you get a flat price before we start, and we honor our standing offers: $40 off any repair over $200, 10% off always for seniors and veterans, and a free second opinion on any written estimate from another company. Call (934) 935-3847 for your exact number.
We Also Serve Cities Near Brentwood
If you’re just outside Brentwood, we cover the surrounding towns too. Brentwood is home base for many of our calls, but we regularly work in Central Islip, Islip, Brightwaters, and Islip Terrace. The same flat pricing and 90-Day Done Right Promise apply no matter which side of the LIE you’re on.
Serving Brentwood, NY - Our Local Coverage Area
We’re based in the Brentwood area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Chimney Liner & Rebuild in Brentwood
Because oil flue deterioration happens inside the tiles where you can’t see it from the firebox or the roof. A camera inspection shows the hairline cracks, pitting, and oily staining that indicate whether the liner can be resurfaced or needs full replacement. In Brentwood, where most homes still heat with oil, skipping this step is how people end up paying for a rebuild that doesn’t fix the actual problem. Call (934) 935-3847 and we’ll scope the flue and show you the footage before recommending anything.
Yes, but the shared-flue setup makes the job more involved. We have to scope both flues, check the dividing wythe between them, and often reline only the oil flue while confirming the fireplace flue is still sound. The critical detail on a Brentwood Cape is that a liner failure in the oil flue can leak carbon monoxide across the shared wall into the fireplace flue, so we verify the separation before and after the install. Every reline ends with a draft test and a camera walkthrough.
It doesn’t directly damage the liner from the inside. What the salt-laden humidity does is accelerate mortar joint erosion and spalling on the exterior chimney, which lets water into the structure. That water freezes, expands, and cracks the clay flue tiles from the outside in. Brentwood’s freeze-thaw cycle does the rest. A chimney that looks fine from the lawn can have a cracked liner by February.
It means the oil furnace has been over-firing or running rich, leaving acidic soot deposits on the tile that eat through standard-weight clay from the 1960s. The staining is the visible sign that the liner’s structural integrity is compromised, even if the tile hasn’t cracked yet. On a ranch off Wicks Road, our tech scoped a flue with this exact staining, pitting the tiles badly. We recommended HeatShield resurfacing of the shared flue, rebuilt the spalled crown, and pressure-tested the draft before the homeowner lit the season’s first fire. If you see this staining, do not ignore it.
Yes. If your Brentwood home heats with oil, the furnace is still venting through that chimney every day in winter. A partial rebuild that fixes the exterior masonry does nothing if the oil flue liner is cracked behind it. We scope the flue on every rebuild job, burning fireplace or not, because the oil burner flue is the one that’s been working hardest for 50 or 60 years. That’s the flue that fails first.
Call Top Hat Chimney for Liner & Rebuild Work in Brentwood
If you suspect your liner is failing, or you’ve been told by another company that you need work you can’t verify, call us. We’ll put a camera in the flue, show you the footage, and tell you in plain English what needs doing and what can wait. No pressure, no boardroom language, just the straight word from someone who’s been doing this since 1999. Call (934) 935-3847 for a free estimate in Brentwood. Wendell or his crew will pick up.
Written by Wendell Pike, Owner at Top Hat Chimney, serving Brentwood and surrounding Long Island communities since 1999.





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