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 Repair Across Midwood
Chimney repair in Midwood typically costs between $350 for minor mortar repointing and $4,500-$8,000 for partial rebuilding with stainless liner installation. Most repairs are completed in a single visit, and our Chimney Repair team carries the parts to do it. We’ve worked on the brick Colonials and Tudors from Avenue J to Avenue P for decades, and we know what fails on these houses before we climb the ladder.
Our crews dispatch from our New York City office and serve Midwood directly. When you call (516) 613-3035, a live person answers - 24 hours a day, every day. No voicemail, no callback queue.
Why Hearthstone Chimney Co. Is Midwood’s Preferred Chimney Repair Company
We’ve been answering the phone with a live person for over 42 years. That’s not a slogan. It’s how we know a homeowner on Ocean Parkway from a homeowner on East 17th Street can both get a straight answer at 10 PM on a Saturday.
Our Level-2 camera inspections end with photos you can see and a plain-English verdict. We document like engineers, explain like craftsmen. If we find a bare 12×12 flue venting your gas boiler - and we do, regularly - we show you the image, cite the NYC DOB guideline it violates, and tell you exactly what it takes to make it right. No scare tactics. Photos you can see, a plain-English verdict.
Every job is backed by our 90-Day Done Right Promise: in writing, no arguing. If it’s not right, we come back. Krafted right, Every time, Your home first, Standing behind it.
Our technicians are background-checked, uniformed, and carry professional-grade materials from DuraFlex, HeatShield, and Olympia Chimney. Most jobs are completed in a single visit. No-hassle upfront pricing means the number on the estimate is the number on the invoice. A square deal.
Our Chimney Repair Services in Midwood
Chimney Rebuilding
Midwood’s 1920s-1940s detached brick houses carry chimneys that have weathered 80-100 years of Brooklyn freeze-thaw cycles and salt-laden air off Jamaica Bay. When spalling brick, deteriorated mortar, and compromised structural integrity stack up, spot repairs won’t hold. We rebuild chimney sections from the roofline up using matching brick and proper bonding patterns, then install a correctly sized stainless liner so the rebuilt chimney actually works with your gas appliance. A rebuilt chimney without a proper liner is just a pretty stack.
Flashing Repair
The step flashing where Midwood’s older chimneys meet pitched roofs is often original tar and galvanized metal, decades past its service life. Salt air accelerates corrosion at the roofline, and once flashing gaps open, water tracks directly into the attic and down the flue. We replace failed flashing with custom-fabricated stainless or copper step and counter-flashing, sealed with fire-rated compounds. On homes near the southern edge of Midwood closer to Marine Park, we’ve found flashing deterioration so advanced the roof decking behind it was spongy. We fix the flashing. We show you the photo.
Chimney Waterproofing
Brick is not waterproof. Midwood’s older masonry has absorbed decades of rain, snow, and salt spray, and the freeze-thaw cycling of Brooklyn winters opens hairline cracks into water highways. We apply vapor-permeable waterproofing agents - not surface-sealing paints that trap moisture inside - to let the brick breathe while shedding water. For chimneys with existing spalling, we repair first, then waterproof. Waterproofing damaged brick is like painting over rot.
Mortar Repointing & Tuckpointing
The mortar joints on Midwood’s pre-war chimneys are often soft lime-based mixes that erode faster than the brick itself. When joints recede more than half an inch, water penetrates the wall cavity and the freeze-thaw cycle begins destroying brick from behind. We grind out failed joints to proper depth and repoint with matching mortar - harder than the original for modern exposure, but compatible with 1920s brick chemistry. Tuckpointing for appearance is available where decorative joint lines matter to the homeowner.
Spalling Brick Repair
Spalling - the flaking and crumbling of brick faces - is epidemic on Midwood chimneys that haven’t been maintained through decades of salt and freeze exposure. We remove and replace spalled units with matching reclaimed or reproduction brick, then address the water source that caused it. Without fixing the water intrusion, new brick spalls too.
What happens when you call
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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 Midwood
We work exclusively with professional-grade materials from DuraFlex, HeatShield, Gelco, Olympia Chimney, Famco, and Copperfield. No builder-grade substitutes. For Midwood’s salt-air environment, we specify stainless over galvanized for caps, flashing, and liners - the difference between a 15-year repair and a 3-year do-over. We stock common stainless cap sizes and liner diameters locally, so most Midwood repairs don’t wait on parts. When your chimney is venting a gas appliance into an unlined flue, waiting is not a neutral choice.
Common Chimney Repair Problems We See in Midwood Homes
- Galvanized caps and flashing corroded through. Salt-laden air off Jamaica Bay destroys galvanized steel in 3-5 years. We replace with stainless or copper - the only materials that last on Midwood chimneys.
- Oversized, unlined clay flues venting gas appliances. That 12×12 flue built for coal? It’s a code violation with your gas boiler, and it creates poor draft that can spill carbon monoxide. Code-compliant relining is the fix.
- Mortar joints eroded to dust. Decades without tuckpointing, combined with freeze-thaw and salt, leave chimneys structurally compromised. We repoint with matching mortar before rebuilding becomes the only option.
- Glazed creosote from low-temperature fires. Midwood homeowners who burn only occasionally during holiday weeks build sticky, shiny creosote that’s harder to remove and more flammable than powdery soot. It requires mechanical removal, not just sweeping.
Pricing for Chimney Repair in Midwood, NY
Here’s what chimney repair costs in Midwood’s market:
| Service | Typical Range |
|---|---|
| Mortar repointing (partial chimney) | $350 - $900 |
| Spalling brick repair (localized) | $500 - $1,400 |
| Chimney waterproofing | $400 - $950 |
| Flashing repair/replacement | $550 - $1,800 |
| Stainless chimney cap installed | $350 - $750 |
| Stainless liner installation (code-compliant) | $2,200 - $4,000 |
| Partial chimney rebuild with liner | $4,500 - $8,000 |
What moves the number: accessibility (steep roof, tight alley), extent of brick matching required, liner diameter and height, and whether we find hidden damage during the camera inspection. We give you the full price before we start. No surprises on the bill. Estimates are free. Call (516) 613-3035.
We Also Serve Cities Near Midwood
Our crews work throughout Brooklyn and across the water in Staten Island neighborhoods including Tottenville, Great Kills, and St. George. Whether you’re in Midwood proper or nearby, the same live-answer phone, same camera inspections, same 90-Day Done Right Promise applies. Chimney Repair in Midwood is our local focus, but we’re never far away.
Serving Midwood, NY - Our Local Coverage Area
We’re based in the Midwood 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 Midwood
The crown was likely poured from standard mortar mix instead of proper crown cement, or it was sloped incorrectly so water pools and freezes. Salt-laden air accelerates the deterioration. We rebuild crowns with Portland-based crown mix at proper slope and overhang, then seal with vapor-permeable compound. A crown done right should last 15-20 years, not three. Call (516) 613-3035 for an exact quote - estimates are free.
No. NYC DOB guidelines and Local Law explicitly prohibit venting gas appliances into unlined masonry flues, especially oversized ones. The 12×12 dimension designed for coal creates sluggish draft with gas, increasing carbon monoxide risk. We install correctly sized stainless liners - typically 4″ or 5″ round for residential gas boilers - that meet code and restore proper venting. Call (516) 613-3035 and we’ll camera-inspect to confirm your flue condition - estimates are free.
Annually, per NFPA 211. For Midwood’s salt-air exposure and pre-war housing stock, we recommend Level-2 inspection with camera every year - not a visual glance from the fireplace opening. Salt accelerates cap, crown, and flashing failure that a basic inspection misses. The inspection includes photos you can see and a plain-English verdict. Call (516) 613-3035 to schedule - estimates are free.
Galvanized steel rusts through in 3-5 years in Midwood’s salt-laden coastal air. Stainless steel lasts 15-20 years. We see this difference directly: caps we installed on East 16th Street homes five years ago in stainless look new; galvanized caps on neighboring homes are bleeding rust down the brick. The upfront cost difference is roughly $150-$300. The replacement cost difference, including labor, is $500+ every few years. Call (516) 613-3035 - we’ll show you both on neighboring chimneys if you want to see for yourself.
That’s glazed creosote, formed when wood fires burn at low temperatures without sustained heat to fully warm the flue. It’s common in Midwood, where fireplaces see intermittent holiday-week use rather than daily heating. Glazed creosote is more flammable than powdery soot and requires mechanical removal - rotary chains or specialized scrapers - not standard sweeping. It also indicates your flue may be oversized for your fireplace, compounding the problem. Call (516) 613-3035 - we’ll assess whether removal alone solves it or if liner sizing is the root cause. Estimates are free.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Midwood and Brooklyn communities for over 42 years.