The short answer
Most Gowanus chimneys should be inspected once a year and swept when soot, creosote or debris has built up, following the NFPA 211 standard. Schedule before the heating season starts in October, and get an evaluation any time your building switches fuel or adds a new appliance.
Gowanus has a mix of brownstones, brick rowhouses, pre-war apartment buildings and newer construction. Many of these homes still have working fireplaces, and many older masonry chimneys now vent gas boilers and water heaters. EverSafe Chimney Sweep works out of Fort Greene, about 2 miles east of Gowanus, and our certified technicians sweep and inspect chimneys throughout ZIP code 11231. This page covers what a chimney sweep involves for a Gowanus home, when to schedule one, and what we check while we're there.
Why Gowanus Chimneys Need Regular Sweeping
Many chimneys in Gowanus are tall, narrow masonry flues built long before modern heating equipment. Over time they collect creosote from wood fires, soot from oil heat, loose mortar, and nesting material from birds and other animals. Any of these can restrict the flue, and creosote can catch fire.
Attached rowhouses add another concern. When chimneys share party walls with the house next door, a blocked or cracked flue is a risk to your neighbors as well as to you. A routine sweep and inspection helps catch problems while they are still small and easy to fix.
What Happens During a Sweep
Our technicians protect the floor and furniture around the fireplace or appliance connection before starting. Brownstone parlor floors often have original woodwork and mantels, so we work carefully to keep soot contained.
A standard visit includes:
- Brushing the flue, smoke chamber and firebox to remove soot and creosote
- Clearing nests, leaves and debris from the flue and smoke shelf
- Checking the damper so it opens, closes and seals properly
- Looking at the chimney cap, crown and visible masonry for damage
- Checking connections from boilers and water heaters that vent into the chimney
- Explaining what we found and what, if anything, needs attention
Yearly Inspections and the Three Inspection Levels
The NFPA 211 standard calls for chimneys, fireplaces and vents to be inspected once a year. Sweeping and inspection usually happen together, but they are not the same thing. Not every chimney needs a full cleaning every year, but every chimney in use should be looked at every year.
Chimney professionals use three inspection levels. A Level 1 inspection fits when nothing about the system has changed. A Level 2 inspection is called for when the system changes, such as a new appliance or a fuel switch, or when the home is sold. Gowanus has frequent sales and renovations, so this one comes up often. A Level 3 inspection is needed only when a hidden hazard has to be reached by opening part of the chimney or the building.
Oil-to-Gas Conversions and Chimney Liners
Many older Brooklyn buildings have converted, or are planning to convert, their boilers from oil to gas. In New York City the chimney has to be evaluated as part of that work. A new liner is often needed because gas exhaust produces acidic condensate that can corrode an unlined or worn masonry flue from the inside.
If your building has converted recently, or a conversion is coming up, we can sweep the old oil soot out of the flue and check whether the existing liner is suitable for gas. That gives your boiler contractor a clear picture before the new equipment goes in.
Timing Your Sweep Around Heat Season
New York City's heat season runs from October 1 through May 31. During that time building owners must keep apartments heated to the city's minimum temperatures. For owners of multi-family brownstones and pre-war buildings in Gowanus, that makes a working boiler flue essential. Finding a blocked chimney in December can leave tenants without heat while repairs are arranged.
We recommend scheduling your sweep and inspection in late spring or summer, after the heating system has done its heaviest work and well before October. If you use your fireplace often, a mid-season check can also make sense. We also serve nearby Carroll Gardens, Cobble Hill, Park Slope, Brooklyn Heights and Downtown Brooklyn, so scheduling across the area is straightforward.
More services in Gowanus
- Chimney Inspection in Gowanus
- Chimney Repair in Gowanus
- Air Duct Cleaning in Gowanus
- Chimney Liner Installation in Gowanus
