Masonry repair
Sweep & inspection
Caps & crowns
Flue relining
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.
HeatShield Chimney Repair in Hempstead: What to Know First
HeatShield chimney repair in Hempstead typically runs $850 to $2,400 depending on whether you’re patching a cracked flue section, resurfacing a liner, or doing full mortar repair around the system. We’re an independent HeatShield service provider, not a manufacturer-authorized shop, which means we diagnose what’s actually failing and quote you a written price before any work starts. Most HeatShield repairs in Hempstead take one visit, and every repair carries a written one-year guarantee.
This page is for Hempstead homeowners who already have a HeatShield liner or coating system in place and need repair work around it: spalling brick, failed flashing, cracked mortar joints, or a HeatShield surface that’s starting to show age. Call (516) 559-6922 and you’ll get Hank Delano or another member of our crew on the line, not a voicemail tree.
How HeatShield Products Fail – and How We Fix Them
HeatShield is a ceramic coating applied to the inside of an existing flue, and while it’s a solid product, failure modes in Hempstead are predictable. Here’s what we see most often on service calls:
- Delamination from moisture intrusion. HeatShield’s Joint Repair System adheres to the flue wall, but when Hempstead winters cycle through freeze-thaw, water seeps behind the coating and lifts it off the masonry. The symptom is a patch of coating that sounds hollow when tapped or flakes off during a sweep. Fix: we stop the water first (usually flashing or crown repair), then re-apply HeatShield to properly prepped flue walls.
- Cracks at flue tile joints. The HeatShield Resurfacing System bridges cracked clay tiles, but over-settled Hempstead foundations can shift the tile stack and re-open a joint crack through the coating. You’ll see a hairline fissure running horizontally around the flue. Fix: we clean the crack, re-prime the area, and re-coat so the joint is sealed again.
- Spalling brick around the liner. HeatShield liners don’t fail on their own often. What fails is the brick chimney around them. When mortar joints in Hempstead chimneys erode from rain and road-salt air, moisture saturates the brick and freezes, popping off face shells. You get spalled brick and loose masonry around an otherwise sound liner. Fix: tuckpointing or brick replacement, then waterproofing the exterior.
- Failed crown or wash at the top. If the concrete crown over your chimney develops cracks (they all do eventually on Long Island), water runs down and pools behind the HeatShield coating. This is the leading cause of HeatShield failures we see in Hempstead’s older housing stock. Fix: recast or patch the crown with a proper overhang and drip edge, then inspect the coating and re-apply where moisture damage occurred.
- Heater-flue dissimilar metal corrosion. We’ve opened flues where HeatShield was applied over a heater chimney that also vented a gas appliance. Condensation from the appliance eats at the coating from the inside in ways the manufacturer’s warranty doesn’t cover. The symptom is a chalky residue or pitting. Fix: we correct the venting configuration, then re-coat if the flue structure is still sound.
The flue tells the truth. You just have to know how to read it.
Styles & brands we work with
Our HeatShield Chimney Repair Process
Every HeatShield repair in Hempstead follows the same sequence, so you know what’s happening and why before you pay for anything.
- 1
You call, you get a live person. We answer 24/7. We ask what you’re seeing, what appliance or fireplace the flue serves, and when the chimney was last inspected. Then we schedule a visit and give you a two-hour arrival window that we honor.
- 2
Camera inspection before anything else. We run a camera up the flue so both you and our tech can see exactly what condition the HeatShield coating is in. You’ll see the same footage we see. If your coating is intact, we’ll tell you that and charge you for the inspection only – not for a repair you don’t need.
- 3
Written price, fixed before tools come off the truck. We give you the scope of work and the dollar amount in writing. That number does not move unless we uncover something structural and you approve a change order in writing.
- 4
Parts and material decisions, made job by job. On HeatShield work, we use HeatShield materials because no aftermarket ceramic coating matches the manufacturer’s formulation. For surrounding chimney repairs – mortar, flashing, crowns – we use trade-standard brands like DuraFlex, Gelco, Olympia Chimney, Famco, and Copperfield, specified by what the job actually requires.
- 5
The repair, the test, the cleanup. We complete the repair, run a smoke or camera test to confirm the flue draws correctly, and leave the work area cleaner than we found it. You sign off on the work before we leave.
- 6
Written guarantee, good for one full year. Every repair gets the 365-Day Done Right Promise. If a covered repair fails within a year, we come back and make it right at no charge. That’s written, not verbal.
What HeatShield Chimney Repair Costs in Hempstead
Here’s the honest pricing picture for the most common HeatShield-related repairs we handle in Hempstead. These are ballpark ranges so you can plan before you call.
- Cracked or flaking HeatShield patch repair: $850 to $1,400
- Full flue resurfacing with HeatShield: $2,800 to $5,500 depending on flue height and access
- Spalling brick repair around the liner: $700 to $1,900 depending on brick count
- Tuckpointing and repointing: $12 to $25 per square foot of masonry face
- Chimney crown replacement: $1,200 to $2,200
- Flashing repair or replacement: $450 to $1,100
- Chimney waterproofing after HeatShield work: $400 to $800
What moves the price is chimney height, roof pitch, access from a ladder or lift, and how much masonry has deteriorated around the liner. Call (516) 559-6922 for a free estimate. We’ll give you a written number, not a sales pitch.
See the difference
Before
After
Before
After
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AfterWhy Hempstead Homeowners Call Flint Chimney Co Hempstead for HeatShield Work
We’ve been running chimney crews in Hempstead since 2002, as part of the Garrison Partners family of independently owned chimney service companies across Long Island. That means we operate under the Garrison Code: a written price before work, a uniformed technician who arrives when we say, and a written guarantee on every repair. No exceptions, no handshake promises.
When your chimney has a HeatShield liner, the repair work around it matters as much as the liner itself. Our techs know the difference between failed coating and failed masonry, and they won’t sell you a $3,000 resurfacing job when a $900 flashing repair fixes the water intrusion. We also work with DuraFlex and Gelco systems for homes where an alternate liner approach makes more sense. One number, one standard: (516) 559-6922.
FAQs
It depends on who’s doing the work. If we’re repairing the masonry around a HeatShield liner – brick, mortar, flashing, crown – that generally doesn’t void the manufacturer’s coverage. We’re an independent HeatShield service provider, and we take care to work in ways that preserve whichever warranty you still have on the coating itself. We’ll tell you plainly if a proposed repair will touch the liner directly and what that means.
Most Hempstead jobs are scheduled within three to five business days, and we use a live-answer dispatch line 24 hours a day, so you don’t wait for a callback. If you have an active leak or visible masonry failure, tell us when you call and we’ll work you into the schedule sooner when possible.
On the HeatShield coating itself, we use genuine HeatShield ceramic products, because no universal aftermarket coating matches the formulation or the warranty chain. For surrounding hardware and accessory piping, we install trade-grade brands like DuraFlex, Gelco, Olympia Chimney, Famco, and Copperfield, chosen by the job’s actual requirements.
In most Hempstead homes, no. If the brick and mortar around a HeatShield liner are structurally sound, repairing the coating or surrounding masonry is far less expensive than a rebuild – and faster. Full replacement only makes sense when the chimney itself has structural failure, which we’ll show you on camera before recommending anything.
Call (516) 559-6922. Every repair carries our 365-Day Done Right Promise in writing. If a covered repair fails within one year, we return and make it right at no charge. No argument, no fine print reading.
Contact Flint Chimney Co Hempstead
If you own a HeatShield-lined chimney in Hempstead and you’re seeing flaking coating, spalled brick, water stains on the ceiling, or damp spots near the chimney, call (516) 559-6922 now. We’ll walk through what you’re seeing, schedule a camera inspection, and put the price in writing before any work begins. The estimate is free.
Written by Hank Delano, Owner, Flint Chimney Co Hempstead at Flint Chimney Co Hempstead, serving Hempstead and nearby areas.