Fast, Reliable Chimney Repair Across Selden
Chimney repair in Selden, NY typically costs between $450 and $3,800 depending on scope, and most jobs are completed in a single visit with no-hassle upfront pricing. If your chimney is showing cracks, leaks, or deteriorating brick, calling a specialist who understands Selden’s specific housing stock saves both money and repeated repairs.
We’ve been driving to Selden from our earliest days in 1984, long before the Smith Haven Mall expansion drew the traffic patterns locals now navigate daily. Our trucks know the difference between the ranch homes off Boyle Road and the cape cods near Selden Middle School, and we understand how each neighborhood’s 1960s and 1970s construction ages differently. When you call (844) 803-1545, a live person answers, 24 hours a day, every day. We’ll give you a straight answer about whether your chimney needs a minor repair or a full rebuild, and we’ll be there when we say.
Why Hearthstone Chimney Co. Is Selden’s Preferred Chimney Repair Company
Selden homeowners tend to stay put. The houses here were bought by families who raised children, paid off mortgages, and now face the maintenance that comes with forty to sixty years of Long Island weather. We respect that history. Our Chimney Repair team treats every Selden home like the long-term investment it is.
Our reputation in Selden rests on documentation. Every inspection ends with photos you can see and a plain-English verdict you can understand. No technical jargon, no pressure to commit on the spot. The 90-Day Done Right Promise backs every repair in writing, no arguing, if it’s not right, we come back. That’s been our standard since 1984, and it’s why Selden customers call us back when their neighbors need a referral.
Response time matters in a chimney emergency. Water pouring through a cracked crown during a February nor’easter doesn’t wait for business hours. We route trucks to Selden from our central Suffolk coverage area, and most Selden calls are scheduled within 24 to 48 hours, with same-day emergency response when safety is at risk.
Our local knowledge runs deeper than zip codes. We know that chimneys near the NYS Route 25 corridor often show accelerated mortar deterioration from decades of road salt spray carried inland on winter winds. We know that homes south of Middle Country Road, closer to the Pine Barrens watershed, sometimes have foundation settling that shifts chimney stacks independently of the house frame. These details change how we diagnose and how we repair.
Our Chimney Repair Services in Selden
Mortar Repointing
The freeze-thaw cycles in Selden are brutal on 1960s mortar. Water seeps into hairline cracks in October, freezes by January, and widens those cracks into gaps that let more water in next season. Our repointing removes deteriorated mortar to proper depth and replaces it with color-matched, professional-grade mortar formulated for Long Island’s coastal climate. We grind, we clean, we repoint, and we leave the joint profile correct for shedding water. Most Selden repointing jobs run $18 to $28 per square foot of wall surface, with typical single-flue chimneys falling in the $850 to $1,600 range.

Spalling Brick Repair
Spalling, the flaking and crumbling of brick faces, is epidemic on Selden’s oil-era chimneys. The combination of age, moisture intrusion, and in some cases the wrong brick type for exterior exposure leaves chimneys on Selden streets like Magnolia Drive and Woodmere Place with bricks that look intact from the ground but shed fragments into the flue below. We remove damaged units, source matching replacement brick when possible, and rebuild with proper bond pattern and weep details. Selden spalling repairs typically range from $650 for localized patching to $2,400 for full courses on multiple faces.

Chimney Waterproofing
Water is the enemy of every masonry chimney, and Selden’s position in central Suffolk County doesn’t protect it from salt-laden air that accelerates deterioration. Our waterproofing treatment uses vapor-permeable sealers from professional-grade suppliers, never the hardware-store coatings that trap moisture inside. We apply to clean, dry masonry after any needed repointing, with particular attention to the exposed faces that catch prevailing westerlies off the Sound. A typical Selden chimney waterproofing runs $450 to $750, and we warranty the application for ten years when combined with our crown and flashing inspection.

Flashing Repair
The junction between chimney and roof is where most Selden leaks begin. Step flashing corrodes, counterflashing separates from mortar joints, and the sealant that previous roofers applied as a Band-Aid cracks within two winters. We remove failed flashing completely, inspect the underlying decking for rot (common in Selden’s older homes with original cedar shakes under asphalt), and install new copper or galvanized flashing with proper overlap and seal. Selden flashing repairs range from $380 for straightforward step flashing replacement to $1,200 when roof decking repair is needed. We also handle Chimney Cap & Crown in Selden when the leak source is higher up.

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 Selden
We don’t substitute builder-grade materials to hit a price point. Our Selden repairs specify DuraFlex stainless steel liners for chimney liner and rebuild jobs, HeatShield cerfractory resurfacing for flue restoration, and Famco chimney caps and dampers. Olympia Chimney supplies our premium liner kits when a full relining is the right solution for a converted oil-to-gas system. These are the brands that professional sweeps specify, and we stock common sizes to keep Selden jobs moving without waiting on freight from the Midwest. The part we need is usually on the truck already.
Common Chimney Repair Problems We See in Selden Homes
- Unlined flues after oil-to-gas conversion. Tech crews in Selden frequently find that a chimney originally venting an oil boiler has been silently serving a gas appliance after a fuel conversion, with no relining ever done. This creates dangerous condensation and carbon monoxide risk inside the oversized, unlined flue, and catching this combination is a signature inspection finding in this part of Brookhaven.
- Crown cracks from freeze-thaw cycling. Selden’s concrete crowns, poured in the 1960s and 1970s without proper reinforcement or overhang, crack predictably after decades of thermal stress. Water enters, freezes, and lifts the crown from the brick below, accelerating deterioration of the entire top course.
- Spalled brick on south and west exposures. Chimneys facing the prevailing weather on Selden’s ranch homes show the worst spalling, particularly where roof overhangs are shallow or gutters have failed and splashback soaks the base courses.
- Original clay tile liner collapse. The 40 to 60 year old clay tile liners in Selden’s masonry chimneys are reaching end of life. A single shifted tile can block the flue or create a gap where creosote accumulates against combustible framing, a condition we document with our Level-2 camera inspection and show you on screen.
Pricing for Chimney Repair in Selden, NY
We’ve worked in Selden long enough to know what these jobs actually cost, and we don’t believe in vague estimates that balloon on the invoice. Here’s what Selden homeowners can expect:
| Service | Typical Range in Selden |
|---|---|
| Mortar repointing (single-flue chimney) | $850 - $1,600 |
| Spalling brick repair (localized) | $650 - $2,400 |
| Chimney waterproofing | $450 - $750 |
| Flashing repair/replacement | $380 - $1,200 |
| Partial chimney rebuild (above roofline) | $2,200 - $4,800 |
| Full chimney rebuild | $4,500 - $8,500+ |
| Stainless steel liner installation (DuraFlex or Olympia) | $2,800 - $4,200 |
Factors that move Selden jobs within these ranges: accessibility (steep roof pitch, proximity to power lines), extent of hidden damage revealed during tear-out, and whether the chimney serves multiple appliances. We provide no-hassle upfront pricing before any work begins, the number on the estimate is the number on the invoice. Call (844) 803-1545 for a free estimate, estimates are free and carry no obligation.
Current standing offers: $50 off any repair over $250, free second opinion on any written estimate from another contractor, $89 chimney cleaning and sweep tune-up, and a permanent 5% senior and veteran discount.
We Also Serve Cities Near Selden
Our coverage extends throughout central Suffolk County. We regularly repair chimneys in Selden and neighboring Centereach, Coram, Farmingville, and Port Jefferson Station, often scheduling multiple jobs in the same area to minimize travel time and keep our pricing fair. If you’re unsure whether your address falls in our service area, call and ask, a live person will tell you straight.
Serving Selden, NY - Our Local Coverage Area
We’re based in the Selden 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 Selden
Most Selden appointments are scheduled within 24 to 48 hours, and same-day emergency response is available when a chimney poses immediate safety risk from structural damage or active water intrusion. Call (844) 803-1545, a live person answers 24/7 to assess urgency and book the earliest available slot.
Yes, we repair chimneys throughout Selden’s 11784 zip code, from the ranch neighborhoods near Boyle Road and Magnolia Drive to the cape cod homes around Selden Middle School and the properties along the Middle Country Road commercial corridor. Our trucks know the local streets and parking constraints.
Yes, our phones are staffed by a live person 24 hours a day, 7 days a week, including holidays. For Selden emergencies such as a chimney fire, collapsed flue liner, or storm damage with active water entry, we dispatch after hours and on weekends. The 90-Day Done Right Promise applies to all emergency repairs just as it does to scheduled work.
Pricing is consistent across our central Suffolk service area, Selden jobs are not surcharged relative to Coram or Centereach. The main cost drivers are chimney height, accessibility, and repair scope, not zip code. A repointing job on a single-story ranch in Selden costs the same as an identical job in Farmingville. Call (844) 803-1545 for an exact quote, estimates are free.
Every repair is backed by our 90-Day Done Right Promise in writing, if it’s not right, we make it right with no paperwork and no arguing. Waterproofing applications carry a ten-year warranty when combined with crown and flashing service. Stainless steel liner installations with DuraFlex or Olympia Chimney products include the manufacturer’s lifetime warranty plus our installation guarantee. We also handle Fireplace Services in Selden under the same promise.
Ready to stop worrying about your chimney? Call Hearthstone Chimney Co. at (844) 803-1545 for your free estimate. We’ll inspect, document with photos, explain what we found in plain English, and give you upfront pricing you can count on. Done right, and we stand behind it.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Selden and central Suffolk County since 1984.