Skip to content
Serving Brooklyn and nearby cities Mon–Fri: 8 AM–8 PM · Requests accepted 24/7 · (571) 745-9853

Chimney Repair in Gowanus, Brooklyn

Serving Gowanus and nearby cities.

Request Service Call (571) 745-9853

Tell us what’s going on

Prefer to talk? (571) 745-9853

The short answer

Most chimney repairs in Gowanus involve worn mortar, cracked crowns, leaking flashing, or flue liners damaged by moisture or by a switch from oil to gas. EverSafe Chimney Sweep inspects the chimney first, explains what we find, and repairs only what needs it. Scheduling the work before heat season begins on October 1 gives you the most flexibility.

Gowanus has a varied housing stock: brick rowhouses, brownstones, pre-war apartment buildings, and a growing number of converted and newer buildings. Many of the older chimneys have been exposed to decades of freeze-thaw cycles, wind-driven rain, and changing heating systems. They often sit on shared roof lines and party walls, so a problem with one chimney can affect the house next door. EverSafe Chimney Sweep repairs chimneys throughout the 11231 ZIP code from our office in Fort Greene, about two miles east. Our certified technicians start by finding out what is actually wrong. They explain it in plain language and then repair the parts that need work, without rebuilding what is still sound.

Common Chimney Problems in Gowanus Homes

Most chimney damage in this part of Brooklyn starts with water. Older brick and lime-based mortar absorb moisture. When that moisture freezes and thaws through a New York winter, joints loosen and brick faces flake off. Tall rowhouse chimneys catch a lot of weather, and on attached buildings water that gets past the masonry can show up on a ceiling or wall well below the roof.

These are the problems we see most often:

  • Eroded or missing mortar joints that let water into the brickwork
  • Spalling brick, where the outer face cracks or pops off
  • Cracked or crumbling chimney crowns, the concrete or mortar cap on top of the stack
  • Failed or poorly sealed flashing where the chimney meets the roof
  • Missing or rusted chimney caps that let in rain, debris, and animals
  • Cracked clay tile liners or flues with gaps between sections
  • Water stains, damp odors, or flaking paint near the fireplace or chimney breast

Oil-to-Gas Conversions and Flue Liners

Many Gowanus buildings that once burned heating oil have switched, or are planning to switch, to gas. When a New York City building converts its boiler from oil to gas, the chimney has to be evaluated as part of the work. A new liner is often needed because gas exhaust produces acidic condensate that can corrode a masonry flue.

We inspect the existing flue and tell you whether it is suitable for the new appliance. If it is not, we size and install an appropriate liner. If your building converted years ago and the chimney was never relined, look for crumbling mortar at the base of the flue, debris in the cleanout, or stains on the exterior brick. These are worth checking.

How We Diagnose Before We Repair

The NFPA 211 standard calls for chimneys, fireplaces, and vents to be inspected once a year. Chimney professionals use three inspection levels. A Level 1 inspection fits when nothing about the system has changed. A Level 2 inspection applies when the system changes, such as a new appliance or a switch of fuel, or when the home is sold. A Level 3 inspection is used when a hidden hazard can only be reached by opening part of the chimney or building.

For most repair calls, we inspect the chimney from the roof, the firebox, and the cleanout, and we use a camera inside the flue where it helps. You get a clear description of the damage, photos where possible, and a recommended scope of work. Repointing a few courses of brick is a very different job from rebuilding a chimney above the roofline, and we tell you which one you need.

Working on Rowhouses and Apartment Buildings

Chimney work on attached houses takes some coordination. Roof access may run through a hatch or bulkhead, and a shared stack can serve more than one unit or building. For co-ops, condos, and rental buildings, we can work with the owner, board, or managing agent to schedule access and keep residents informed.

Inside your home, we protect floors and furnishings around the fireplace and work areas. We clean up when the job is done. Outside, we try to match the existing brick and mortar so repairs fit the look of older facades.

Plan Repairs Around Heat Season

New York City's heat season runs from October 1 through May 31. During that period, building owners must keep apartments heated to the city's minimum temperatures. A chimney that serves a boiler cannot simply be taken out of service in the middle of winter, so late spring and summer are the easiest times to schedule liner work and major masonry repairs. Mortar also cures best in mild, dry weather.

Besides Gowanus, we handle chimney repair in Carroll Gardens, Cobble Hill, Park Slope, Brooklyn Heights, and Downtown Brooklyn.

More services in Gowanus

Related

What to expect

How a visit goes

  1. Look first, then recommend

    Every visit begins with an inspection of the parts we can reach. Recommendations come from what we actually find, not from a standard package.

  2. Plain explanations

    We tell you what each problem is, why it matters and what happens if it waits. You decide what gets done and when.

  3. A clean work area

    We cover floors and furniture near the fireplace or vent and contain soot and debris while we work. We clean up before we leave.

FAQ

Common questions

How do I know if my chimney needs repair?

Common signs include water stains near the chimney, flaking or crumbling brick, loose mortar, pieces of tile or masonry in the firebox or cleanout, and a damp or musty smell. An inspection will confirm the cause and how far the damage goes.

Does switching my boiler from oil to gas affect my chimney?

Yes. In New York City the chimney has to be evaluated when a boiler converts from oil to gas. A new liner is often needed because gas exhaust produces acidic condensate that can corrode a masonry flue.

How often should my chimney be inspected?

The NFPA 211 standard calls for chimneys, fireplaces, and vents to be inspected once a year. A more detailed inspection is appropriate when you change appliances or fuel, or when the home is sold.

Can you repair a chimney shared with the building next door?

Often, yes. Shared chimneys are common on attached rowhouses. We look at how the stack is built and which flues serve which units, then coordinate access with the owners involved.

When is the best time to schedule chimney repair in Brooklyn?

Late spring through early fall. Masonry cures best in mild, dry weather, and you avoid taking a heating chimney out of service during heat season, which runs from October 1 through May 31.

Do you serve areas near Gowanus?

Yes. Besides Gowanus, we work in Carroll Gardens, Cobble Hill, Park Slope, Brooklyn Heights, and Downtown Brooklyn.

Schedule a chimney or vent visit

Tell us what you're noticing, whether it's a smoky smell, a slow dryer or a cracked crown. We'll inspect, show you photos of what we find and give you a written price before any work begins.

Request Service Call (571) 745-9853
Call (571) 745-9853 Request Service