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.
Fast, Reliable Fireplace Services Across Seaford
Fireplace services in Seaford typically run $180-$650 depending on whether you need a gas valve tune-up, firebox repointing, or a full insert conversion, and most jobs are completed in a single visit with our crew already working the South Shore weekly. We’re familiar with the Cape Cods along Sunrise Highway, the ranches tucked between Seaford Harbor and Seaford Creek, and the split-levels near Seamans Neck Road that saw post-Sandy rebuilds a decade ago. Our dispatch is coordinated from our New York City office, but our trucks are on Seaford streets regularly, and a live person answers the phone at (516) 614-4632 any hour you call.
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.
Why Hearthstone Chimney Co. Is Seaford’s Preferred Fireplace Services Company
We’ve been serving Nassau County communities for over 42 years, and Seaford’s mix of post-war housing and salt-air exposure is territory we know well. Our Fireplace Services team has handled everything from gas insert conversions in 1950s Capes to firebox rebuilds in Sandy-era replacement chimneys that are now showing their age.
Seaford homeowners call us because we document what we find. Every inspection ends with photos you can see and a plain-English verdict, not a hard sell. The 90-Day Done Right Promise covers every job in writing, no arguing, if it’s not right, we come back. Our technicians are background-checked, uniformed, and carry the parts and materials to finish most work the same day they arrive. No-hassle upfront pricing means the number on the estimate is the number on the invoice.
Calls are answered by a live person 24 hours a day, 7 days a week. Not a voicemail, not a callback queue. That’s been our way since 1984.
Our Fireplace Services in Seaford
Gas Fireplace Service
Seaford’s ranch homes and split-levels converted from oil to gas decades ago, and many still vent through original clay flues never sized for modern gas inserts. We service gas valves, pilot assemblies, and burner systems, and we check whether your flue liner matches the appliance. A gas fireplace service in Seaford typically runs $180-$280. If the flue is oversized or unlined, we’ll show you the camera footage and explain whether relining is necessary for safe draft. We stock DuraFlex liner components for common Seaford configurations, so most conversions don’t require a second trip.

Wood Burning Fireplace
The brick chimneys in Seaford’s 1948-1965 housing stock were built for wood heat, but sixty to seventy-five years of freeze-thaw cycling and salt-laden bay air have taken a toll. We inspect fireboxes, smoke chambers, and flue liners for spalling, cracked tile, and mortar loss. A Level-2 camera inspection with photo report runs $275-$350 in Seaford. If the firebox needs repointing or the liner is failing, we’ll give you a straight assessment of what can wait and what can’t. We’re not interested in selling you work you don’t need.

Fireplace Insert
Insert installations in Seaford often involve matching a modern gas or wood appliance to a chimney never designed for it. The original clay flue in a 1950s Cape is frequently too large for efficient gas insert venting, leading to poor draft and moisture condensation. We size, install, and vent inserts using professional-grade materials, and we handle the stainless-steel relining when the existing flue won’t do. Insert work with necessary relining typically runs $1,800-$3,200 in Seaford. We use Olympia Chimney and DuraFlex components, not builder-grade substitutes.

Damper Repair
Salt air off Seaford Harbor corrodes steel and galvanized dampers faster than almost anywhere in Nassau County. A stuck or rusted damper wastes heat, invites drafts, and can prevent proper venting. We repair or replace throat and top-sealing dampers, and we check the assembly for proper closure and seal. Damper repair in Seaford typically costs $220-$380. If the fireplace is being converted to gas, we may recommend a lock-top damper or direct-seal system suited to the new appliance.

Firebox Repair
The firebox takes the direct heat, and in Seaford’s older brick chimneys, the refractory mortar and firebrick are often cracked or shifted after decades of thermal cycling. We repoint firebox joints, replace damaged firebrick, and rebuild when the structural integrity is compromised. Firebox repointing in Seaford runs $450-$850; partial rebuilds start around $1,200. We match materials to the original construction and document the work with before-and-after photos.

Fireplace Conversion
Converting a wood fireplace to gas in Seaford requires more than dropping in a log set. The flue must be sized correctly for the new appliance, the damper must be handled per code, and the gas line must be properly routed. We’ve converted fireplaces throughout the Sunrise Highway corridor and in the neighborhoods between Merrick Road and the bay. Conversion work typically runs $1,400-$2,800 depending on gas line access and whether relining is needed. We pull permits when required and stand behind the installation with our 90-Day Done Right Promise.

Trusted Brands We Service in Seaford
We work exclusively with professional-grade materials from brands that hold up to Seaford’s salt-air conditions: DuraFlex stainless liners, Olympia Chimney caps and components, Gelco screening and accessories, Famco termination caps, and Copperfield refractory materials. We stock common sizes locally, so Seaford customers aren’t waiting weeks for a specialty part to arrive. When a galvanized cap has pitted through after two seasons near Seaford Creek, we replace it with stainless. When a crown wash has washed out, we cast a new one with proper slope and overhang. The materials matter, and we don’t cut that corner.
Common Fireplace Services Problems We See in Seaford Homes
- Salt-air corrosion of caps and flashing. The marine air off Seaford Harbor and Seaford Creek eats galvanized metal within a few seasons. We regularly find caps that look fine from the ground but are pitted through at the seams, letting water into the crown and down the flue.
- Spalling clay-tile flue liners in 60-75-year-old chimneys. The original liners in Seaford’s post-war Capes and ranches are past their service life. Tile flakes off, joints open, and flue gases migrate into the brick, accelerating mortar decay from the inside out.
- Post-Sandy rebuild shortcuts near Seamans Neck Road. Emergency rebuilds done under flood-zone pressure often skipped proper crown wash or sized the liner to the old oil flue. Those chimneys are now failing a second time, ten to twelve years later, with spalling brick, washed-out crowns, and draft problems on gas conversions.
- Freeze-thaw damage in porous brick. Decades of bay humidity absorption followed by winter freezing pops the faces off bricks, especially near the crown and shoulders where water collects. Seaford chimneys need crown maintenance and repointing well ahead of inland schedules.
Pricing for Fireplace Services in Seaford, NY
| Service | Typical Range in Seaford |
|---|---|
| Gas fireplace tune-up and safety check | $180 - $280 |
| Level-2 camera inspection with photo report | $275 - $350 |
| Damper repair or replacement | $220 - $380 |
| Firebox repointing | $450 - $850 |
| Fireplace insert with stainless relining | $1,800 - $3,200 |
| Wood-to-gas conversion | $1,400 - $2,800 |
| Firebox partial rebuild | $1,200 - $2,400 |
What drives cost up or down: accessibility of the chimney, extent of salt-damage repair needed, whether the flue requires relining, and whether the work involves a post-Sandy rebuild with non-standard construction. We give upfront pricing before any work begins, and estimates are free. Call (516) 614-4632 to schedule.
We Also Serve Cities Near Seaford
Our crews work the full South Shore corridor, including Seaford and neighboring Wantagh, Massapequa, Bellmore, and Massapequa Park. The same salt-air conditions, housing stock, and post-Sandy repair histories apply across these communities, and we carry the parts and expertise to handle them.
Serving Seaford, NY - Our Local Coverage Area
We’re based in the Seaford 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 - Fireplace Services in Seaford
We recommend an annual Level-2 inspection for Seaford chimneys, and every six months if you’re within a few blocks of the bay. The salt-laden air accelerates corrosion of metal components and mortar decay, so problems develop faster than the NFPA 211 baseline assumes for inland conditions. Call (516) 614-4632 to schedule your inspection.

Yes, and urgently if the rebuild was done under emergency conditions near Seamans Neck Road or other flood zones. We’ve opened post-Sandy replacement chimneys that lacked proper crown wash or had liners sized to the old oil flue, creating a second wave of failures now hitting at the ten-to-twelve-year mark. A camera inspection will show whether your rebuild was done right or needs correction. Estimates are free.

Galvanized steel caps typically last five to seven years in inland Nassau County, but near Seaford Harbor and Seaford Creek, we’ve seen them pit through in two to three seasons. The salt air is the culprit. We replace failed caps with stainless steel from Olympia Chimney, which holds up to marine exposure. A new stainless cap installed runs $280-$420 in Seaford.

Our Level-2 inspection examines the firebox, smoke chamber, flue liner, damper, crown, cap, and exterior brick for structural integrity, creosote buildup, and salt-air damage. We run a camera the full length of the flue, photograph what we find, and give you a plain-English verdict with no pressure. You’ll see what we see. Call (516) 614-4632 to book.

Often no. The original clay flue in a 1950s Seaford ranch was sized for an oil furnace or wood fire, not a modern gas insert. An oversized flue allows combustion gases to cool too quickly, causing condensation and poor draft. We camera-inspect to confirm sizing, and if the flue is wrong, we reline with DuraFlex stainless to match the appliance. The camera footage tells the story, and we won’t recommend work you don’t need.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Seaford and Nassau County since 1984.






Before
After
Before
After
Before
After