The short answer
PrimeFlue repairs chimneys in Ravenswood, Queens, including masonry, crowns, caps, flashing and flue liners. We start with an inspection so the repair matches the actual damage, and we plan work around the heating season whenever possible.
Ravenswood sits along the East River in western Queens, and its housing mixes older brick rowhouses, small multi-family buildings and pre-war apartment buildings with chimneys that have seen decades of weather off the water. PrimeFlue Chimney Services repairs chimneys throughout ZIP code 11106, about a mile from our office in Manhattan. Our certified technicians find out why a chimney is failing, explain what they see in plain terms, and fix the problem so your fireplace, boiler or furnace can vent safely.
Common Chimney Problems in Ravenswood Homes
Many chimneys in Ravenswood are brick and were built long before modern heating equipment existed. Wind and moisture from the river, repeated freeze-thaw cycles, and decades of exhaust all wear on mortar and masonry. Damage usually starts small and gets worse each winter, so it pays to catch it early.
These are the issues we see most often on rowhouses and small apartment buildings in the area:
- Crumbling or missing mortar joints that let water into the brick
- Cracked or eroded chimney crowns that channel rain into the chimney
- Spalling brick, where the faces of bricks flake or pop off
- Failed flashing where the chimney meets the roof, causing leaks onto ceilings and walls
- Missing or rusted chimney caps that let in rain, debris and animals
- Cracked, deteriorated or missing flue liners
- Leaning or loose masonry above the roofline

How We Approach a Repair
Every repair starts with an inspection. The NFPA 211 standard calls for chimneys, fireplaces and vents to be inspected once a year, and it describes three levels. A Level 1 inspection covers the readily accessible parts of a chimney when nothing has changed. A Level 2 inspection is used when the system changes, such as a new appliance or a switch in fuel, or when a home is sold. It typically includes a camera look inside the flue. A Level 3 inspection is reserved for a suspected hidden hazard that can only be reached by opening part of the chimney or building.
After the inspection, we tell you what we found, show you photos where we can, and explain which repairs are urgent and which can wait. We don't recommend a full rebuild when repointing or a new crown will solve the problem. In brick buildings with shared walls, we also look at how water moves through the chimney. A leak that shows up in one room can start several feet away.
Masonry, Crown and Flashing Repairs
For brick and mortar damage, we repoint deteriorated joints with mortar suited to older brick. Replacing brick that is too hard for the old masonry around it can cause more cracking later. We replace spalled bricks, rebuild sections above the roofline when they've become unstable, and repair or recast crowns so water sheds away from the flue.
Flashing leaks are common on flat and low-slope roofs, which you'll find on many rowhouses and small buildings in western Queens. We reseal or replace flashing so the joint between chimney and roof stays watertight. We also install properly sized caps to keep out rain and animals.
Time for your annual chimney check?
Flue Liners and Oil-to-Gas Conversions
A damaged liner is a safety issue, not just wear and tear. Cracks or gaps can let heat and exhaust, including carbon monoxide, reach parts of the building they shouldn't. We inspect liners with a camera and repair or reline flues as needed.
Liners matter most in buildings that switch fuel. 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. If your building is planning a conversion, we can assess the chimney early so the liner work fits into the project.
Timing Repairs Around Heat Season
New York City's heat season runs from October 1 through May 31. During those months, building owners must keep apartments heated to the city's minimum temperatures. For buildings where a boiler vents through the chimney, the late spring and summer months are the easiest time for repairs that take the heating system offline. If a problem shows up mid-winter, we'll look at what can be done safely right away and what should be scheduled once the weather allows.
We also serve the neighborhoods around Ravenswood, including Queensbridge, Dutch Kills, Old Astoria, Roosevelt Island and Lenox Hill.
More services in Ravenswood
- Chimney Sweep in Ravenswood
- Chimney Inspection in Ravenswood
- Air Duct Cleaning in Ravenswood
- Chimney Liner Installation in Ravenswood

