Fast, Reliable Chimney Repair Across Hempstead
Chimney repair in Hempstead typically runs $180 for minor mortar repointing up to $4,500 for partial rebuilding, and our Chimney Repair team completes most jobs in a single visit with upfront pricing confirmed before we start. We answer calls with a live person 24 hours a day, and our technicians are usually on-site in Hempstead within 24 hours. Call (855) 950-3861 for a free estimate.
We’ve been working in Hempstead for over 42 years. We know the narrow side yards off Fulton Avenue, the tight parking along Peninsula Boulevard, and the two-family brick homes packed into the 11550 ZIP code where access is cramped and chimneys have been ignored for decades. Our trucks carry the materials to fix your chimney right then, not after a second trip.
Why Hearthstone Chimney Co. of New York City Is Hempstead’s Preferred Chimney Repair Company
Hempstead homeowners call us back because we document what we find. Every inspection ends with photos you can see and a plain-English verdict. No jargon, no scare tactics.
Our response time to Hempstead averages same-day or next-day. We understand that a cracked crown or failed flashing doesn’t wait for convenient weather, especially when spring nor’easters are rolling in off Hempstead Bay.
Frank Calucci has led this company since 1984. That’s 42 years of showing up when we say we will, standing behind our work with the 90-Day Done Right Promise in writing, and treating Hempstead homes with the care we’d want for our own. We’ve worked on chimneys near Hofstra University, along the older blocks of the village core, and throughout the dense rental corridors where deferred maintenance is the rule, not the exception.
Our technicians are background-checked and uniformed. Most repairs finish in one visit. The price we quote is the price on the invoice.
Our Chimney Repair Services in Hempstead
Mortar Repointing
Hempstead’s coastal position means repeated freeze-thaw cycles every winter, with marine humidity from Hempstead Bay and the South Shore eating away at mortar joints on exposed chimney stacks faster than you’ll see in inland Long Island towns. In the 11550 ZIP code, we regularly find original mortar from the 1940s and 1950s turned to powder. We grind out the failed joints to proper depth and repoint with color-matched, professional-grade mortar rated for Nassau County’s wet winters. Done right, and we stand behind it.

Spalling Brick Repair
Spalling, the face of the brick popping off, is epidemic in Hempstead’s postwar housing stock. The root cause is usually moisture trapped behind the brick face, and in Hempstead that moisture often comes from two sources: exterior saturation from coastal humidity and interior condensation from oversized flues venting cool gas exhaust. We cut out spalled bricks, replace with matching units, and address the moisture source so the repair lasts. We recently repaired a chimney on a two-family home on Fulton Avenue in the village core where the landlord had swapped an old oil boiler for a 90%-efficiency gas unit without relining. We relined the oversized 8″x13″ terra-cotta flue with a DuraFlex stainless steel liner and sealed the crown, stopping the persistent white efflorescence that had been bleeding through the brick.

Chimney Waterproofing
Hempstead’s older masonry was never designed to repel the volume of wind-driven rain that hits the South Shore. We apply vapor-permeable waterproofing agents that let the chimney breathe while blocking water entry. This is especially critical on Cape Cod homes with shallow-pitched roofs where the chimney stack takes the full force of weather with little protection. One application typically protects for 10 years.

Flashing Repair
Spring nor’easters regularly dislodge chimney caps and compromise flashings on the shallow-pitched roofs common to Hempstead’s Cape Cods. We replace damaged step flashing and counterflashing with copper or professional-grade aluminum, sealed with high-temperature compounds. On homes near Hempstead Bay where salt air accelerates corrosion, we specify materials that hold up to the environment.

Chimney Rebuilding
When deterioration has gone too far for spot repair, we rebuild. In Hempstead’s high-rental-turnover market, we’ve seen chimneys that haven’t been touched since the Truman administration. We rebuild from the roofline up, matching existing brick and installing proper crowns, caps, and liners so the new work outlasts the original. Every rebuild includes our 90-Day Done Right Promise in writing.

Tuckpointing
For chimneys where the mortar is failing but the brick is sound, tuckpointing restores structural integrity without the cost of rebuilding. We work carefully on Hempstead’s older homes where the original craftsmanship deserves respect, not a sledgehammer.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Hempstead
We stock professional-grade materials from Gelco, Olympia Chimney, and Famco, among others, so Hempstead repairs don’t wait on parts orders. A typical flashing job or cap replacement on a home near Peninsula Boulevard gets same-day completion because our trucks carry the inventory. For liner installations, we specify DuraFlex stainless steel, the standard for converting Hempstead’s oversized terra-cotta flues to safe, efficient gas venting. No builder-grade substitutes. The materials matter as much as the labor.
Common Chimney Repair Problems We See in Hempstead Homes
- Cracked crowns from decades of neglect. In Hempstead’s dense rental market, chimneys often go uninspected for 20 or 30 years. The concrete crown cracks, water penetrates, and freeze-thaw cycling destroys the top courses of brick.
- The “gas-in-an-oil-flue” mismatch. When landlords swapped oil boilers for 90%-efficiency gas units without relining, the oversized terra-cotta flue runs cold. White sulfurous efflorescence bleeds through exterior brick, a tell-tale sign visible on dozens of properties near the village core.
- Failed mortar joints accelerated by coastal humidity. Nassau County’s marine environment drives mortar erosion faster than inland communities. We see joints recessed half an inch or more on chimneys facing Hempstead Bay.
- Dislodged caps and compromised flashings after nor’easters. The shallow-pitched roofs on Hempstead’s Cape Cods offer little wind protection. Spring storms lift caps and peel back flashing, opening direct paths for water.
Pricing for Chimney Repair in Hempstead, NY
Here’s what chimney repair costs in Hempstead’s market:
| Service | Typical Range in Hempstead |
|---|---|
| Minor mortar repointing (spot repair) | $180 - $450 |
| Spalling brick repair (per section) | $350 - $850 |
| Chimney waterproofing | $450 - $950 |
| Flashing repair/replacement | $400 - $1,200 |
| Stainless steel liner installation (DuraFlex) | $1,800 - $3,500 |
| Partial chimney rebuilding (from roofline) | $2,500 - $4,500 |
Costs in Hempstead run slightly higher than inland Nassau County because coastal conditions accelerate damage, meaning repairs often involve more extensive material replacement. Two-family homes with multiple flues add complexity. We provide no-hassle upfront pricing before any work begins, and we honor a permanent 5% Senior and Veteran discount. Call (855) 950-3861 for your exact quote, estimates are free.
We Also Serve Cities Near Hempstead
Our Chimney Repair in Hempstead coverage extends to East Garden City, Uniondale, Garden City, and Lakeview. Same live-answer phones, same 90-Day Done Right Promise, same single-visit completion for most repairs.
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 Repair in Hempstead
Yes, almost certainly. The 8″x8″ or 8″x13″ terra-cotta flue in your 1950s Hempstead chimney was sized for coal or oil equipment, and venting a 90%-efficiency gas furnace through that oversized flue creates a cold, sluggish draft that condenses moisture and corrodes the liner. We install DuraFlex stainless steel liners sized precisely for your new equipment. Call (855) 950-3861 and we’ll inspect the flue to confirm what you need, estimates are free.
That white powder is efflorescence, mineral salts carried through the brick by moisture, and in Hempstead it often signals the “gas-in-an-oil-flue” problem where a high-efficiency gas unit vents through an unlined, oversized flue. The cool flue temperature causes constant condensation, and the sulfurous exhaust leaves that distinctive white bleed. We recently fixed this exact issue on Fulton Avenue by relining with DuraFlex and sealing the crown. Call (855) 950-3861 for an inspection, estimates are free.
Every 12 months, without exception, given Hempstead’s coastal freeze-thaw cycling and the age of most local housing stock. The National Fire Protection Association recommends annual Level-1 inspections, but for Hempstead’s 1925-1965 chimneys we strongly recommend our Level-2 camera inspection that documents the flue interior with photos you can see. Call (855) 950-3861 to schedule, estimates are free.
Yes. We’ve worked on hundreds of Hempstead two-families with 4-foot side yards and alley-load driveways. Our technicians carry compact equipment and ladder setups designed for tight clearances. Most repairs complete in a single visit. Call (855) 950-3861 to discuss access at your specific property, estimates are free.
Mortar repointing combined with crown sealing. The combination of aged original mortar, coastal humidity, and decades of deferred maintenance in rental properties means Hempstead chimneys need their joints rebuilt and their crowns protected before water destroys the structure above the roofline. We bundle these jobs routinely. Call (855) 950-3861 for a free estimate on yours.
Ready to get your chimney fixed right? Call Hearthstone Chimney Co. at (855) 950-3861. A live person will answer, 24 hours a day. We’ll schedule your free estimate, show up when we say, and stand behind our work with the 90-Day Done Right Promise in writing. No arguing, no paperwork, just the job done correctly.
Written by Frank Calucci, Owner at Hearthstone Chimney Co., serving Hempstead since 1984.