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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AfterFast, Reliable Chimney Cap & Crown Across Hempstead
Chimney cap and crown repair in Hempstead typically costs $325-$780 for crown work and $195-$495 for cap replacement, depending on flue size and how far gone the original metal or masonry is. We get out to most Hempstead homes within a day or two, and the price you hear on the phone is the price on the invoice. Wendell Pike started Top Hat Chimney in 1999 and has spent the years since working chimneys across Nassau County, including plenty right here in Hempstead’s Villas, Presidential Streets, and up and down Hempstead Turnpike. Call (516) 963-1068 and you’ll get a live voice, often Wendell’s own.
Here’s what matters on this page: Hempstead’s salt air, aging brick housing stock, and the big oil-to-gas conversion wave all work together against your chimney cap and crown. Most pages about chimney caps are generic. This one is specific to what we actually see on roofs between Fulton Avenue and Peninsula Boulevard.
Why Top Hat Chimney Is Hempstead’s Preferred Chimney Cap & Crown Company
There’s no franchise office behind our name. Wendell answers the phone, shows up on the roof himself, and runs into you again at the deli on Jackson Street. Homeowners in Hempstead keep our number because when something goes wrong after the job, one call brings the crew back. That’s the 90-Day Done Right Promise, in writing, on every single job.
The crews who come to Hempstead are background-checked and uniformed. They give a real arrival window and call if it slips. We work with trusted brands like Copperfield, Gelco, and HeatShield, which means the parts we install are ones you can look up and verify, not no-name imports. Ask anyone on your street who has had chimney work done in the last few years. Chances are they already know about the live person answering the phone at (516) 963-1068, around the clock.
We’re also one of the crews Nassau County real-estate attorneys call when a title inspection flags a shared flue or a cracked crown. That says something about how we document our work. The camera footage and a plain-English verdict, every time, no exceptions.
Our Chimney Cap & Crown Services in Hempstead
Our Chimney Cap & Crown crew handles the full range, from a simple rusted cap swap on a Ranch off Greenwich Street to a full crown rebuild on a 1940s brick colonial near Hofstra. Four services account for most of what we do in Hempstead.
Cap Installation
New cap installation in Hempstead usually runs $195-$425 for a standard single-flue stainless or copper cap. If your home is part of the oil-to-gas conversion wave, the new gas appliance often vents at a lower temperature and the old cap, sized for oil exhaust, may not be adequate. We’ll tell you plainly if a simple replacement will do or if your flue configuration needs a different design.
Cap Replacement
Replacement is what Hempstead homeowners need most, because the Atlantic air sits about ten miles south and eats galvanized steel and cast aluminum for breakfast. A cap that costs $95 at a hardware store corks in two or three years near the water. The stainless and copper caps we install, from Copperfield and Olympia Chimney, are built for exactly this environment. Expect $245-$495 installed, depending on flue size and roof access.
Crown Repair
Crown repair in Hempstead means fixing the concrete or mortar slab that seals the top of the chimney. Hairline cracks from freeze-thaw cycling are so common in 1925-1960 era Cape Cods that we’ve stopped being surprised. A small crack repair runs $325-$480. A full crown rebuild, with proper overhang and a drip edge, runs $580-$780. On Hempstead’s older double-wythe brick chimneys, those hairline cracks are how water gets into the flue and firebox, and water is what turns a $400 repair into a $4,000 rebuild if you wait.
Crown Coating
Crown coating applies a flexible, waterproof membrane over the crown. Near the South Shore of Nassau County, we use flexible crown coating systems that move with the temperature swings, rather than rigid patch material that cracks again in eighteen months. A typical coating job in Hempstead runs $350-$550 for a single flue and $550-$750 for a multi-flue chimney. This is the fix we recommend when the crown has many small cracks but hasn’t yet started spalling in chunks.
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 Hempstead
We stock and install components from Copperfield, Gelco, HeatShield, and Olympia Chimney, among others. That means if your Crown Repair or cap replacement needs a specific part, we’re not waiting on a backordered shipment from somewhere in Ohio. For Hempstead homes within a few miles of the ocean, we prefer Gelco’s flexible crown coating systems and Copperfield’s stainless multi-flue caps, because they hold up in coastal air better than anything else we’ve used over the past 29 years. If we install it, we stand behind it.
Common Chimney Cap & Crown Problems We See in Hempstead Homes
- Salt-air corrosion on caps and flashing. Hempstead sits within 10-15 miles of the Atlantic and Great South Bay. The salt in the air etches cheap galvanized caps fast, leaving pinhole rust perforations, often within two heating seasons. The mortar joints below look fine from the ground but crumble on contact once you’re on the roof.
- Spalling crowns on 1920s-1950s Cape Cods and colonials. Most homes around the Village of Hempstead were built between roughly 1925 and 1960. The original crowns were poured with concrete that has now survived 60 to 100 winters. Freeze-thaw cycling turns a crown’s surface into sand, and then the water gets in and works on the brick below.
- Acidic condensation damage from oil-to-gas conversion. This one is uniquely concentrated in Hempstead and surrounding Nassau County hamlets. When a lower-temperature gas appliance vents through a flue sized for oil, the flue runs cooler. Condensation forms, carries acidic byproducts, and that acid eats through old cast aluminum caps and etches the crown surface. We see it on nearly every conversion job we inspect.
- Shared-flue differential cracking. Hempstead’s older housing stock often has two or three appliances tied to a single flue, a setup that was grandfathered in years ago. The common crown over that flue heats and cools at different rates across its surface, and over time the differential causes cracks between flue tiles and the cap base. A multi-flue cap is often the right fix, and a proper inspection tells you whether the entire flue needs relining.
Pricing for Chimney Cap & Crown in Hempstead, NY
Here are the ranges we quote for Hempstead, NY, as of this season. They’re honest numbers, not teases to get a salesperson in the door.
| Service | Typical Range in Hempstead |
|---|---|
| Cap Installation (single flue, stainless) | $195 - $340 |
| Cap Replacement (multi-flue, stainless or copper) | $295 - $495 |
| Crown Repair (small crack or spall) | $325 - $480 |
| Crown Rebuild (full, with overhang) | $580 - $780 |
| Crown Coating (flexible membrane) | $350 - $750 |
What moves the number is access, flue count, and whether we find structural issues once on the roof. A two-family semi-detached with a shared chimney near Hempstead Turnpike will land higher than a single-family Ranch off Front Street. Our estimate is free, it’s specific to your chimney, and the number on the phone before we come out is the number on the invoice after. Homeowners in Hempstead can call (516) 963-1068 for a free estimate, and seniors and veterans always get 10% off. And any repair over $200 right now gets $40 off.
We Also Serve Cities Near Hempstead
Besides our Chimney Cap & Crown in Hempstead work, we’re on roofs in Uniondale, Carle Place, Garden City, and Roosevelt every week. If you’re just outside the village line, give us a call. If you’re inside Nassau County, there’s no trip charge.
Serving Hempstead, NY - Our Local Coverage Area
We’re based in the Hempstead 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 Cap & Crown in Hempstead
Salt-laden air from the Atlantic and Great South Bay attacks crown mortar and concrete faster in Hempstead than it does in, say, Albertson or Bellerose, which sit further from the water. The salt crystals work into hairline cracks and then expand during freeze-thaw cycles, widening them. A crown that would last 25 years inland may start spalling in 15 years near the South Shore. That’s why we recommend a flexible crown coating rather than a rigid patch. Call (516) 963-1068 and we’ll take a look before winter locks in the damage.
In Hempstead, usually yes. The lower flue temperatures of a gas appliance produce acidic condensation that oil exhaust doesn’t, and that condensation accelerates crown deterioration and rusts through caps quickly. The old cap may look fine during the conversion but fail within two heating seasons. And because shared flues are common in Hempstead’s 1925-1960 housing stock, you want a sweep inspecting both the cap and the liner at conversion time. We’ll show you the camera footage so you can decide with your eyes, not just our word.
Town of Hempstead building inspectors and Nassau County title attorneys have been flagging shared oil-furnace/fireplace flues and cracked crowns during closings more and more in recent years. The reason is straightforward: a home built in 1948 with a grandfathered shared flue will not pass a modern safety inspection without documentation. We’ve been called in by attorneys and agents specifically to inspect and repair chimneys before a sale. We document everything with photos and a plain-English report, which is what the attorney needs to clear the title issue.
Yes, and in Hempstead this is often the right move. Multi-flue caps from Copperfield or Olympia Chimney are sized to cover both flues at the crown line, with proper venting for each. The alternative, two separate caps, can fail where they meet if the crown has even a slight slope. Multi-flue caps also help with the differential cracking we see on Hempstead’s shared-flue chimneys. The installed cost usually lands between $350 and $750 depending on the overall crown dimensions.
If we’re talking about Hempstead, the honest answer is yes, sooner rather than later. Hairline cracks let water in. When that water freezes, it expands, and those hairlines become quarter-inch fissures by spring. A crown coating or targeted crack repair costs $350-$550 now. Waiting until the visible spalling starts means a full rebuild, likely $580-$780 or more if the water has gotten into the firebox. If you’d like a straight answer after a roof inspection, call (516) 963-1068. The estimate is free, and we won’t recommend work you don’t need.
Written by Wendell Pike, Owner at Top Hat Chimney, serving Hempstead since 1999.