The Long Island chimney company that tells you when you don’t need repairs.

Chimney cleaning on Long Island (chimney sweeping in CSIA terminology) is the annual maintenance task that removes creosote, soot, and debris from the flue lining before each heating season. The National Fire Protection Association (NFPA 211) recommends annual inspection for all chimneys in use, with cleaning performed when creosote or debris accumulates to any degree.

Long Island fireplaces and wood stoves accumulate creosote faster than the national average for two reasons: the burn season is compressed (primarily October through March), which means fireplaces are used intensively over a short window rather than spread across a longer season. And Long Island homeowners often burn improperly seasoned wood — the area doesn't have a large local timber industry, so firewood quality varies significantly. Wet or green wood burns at lower temperatures and deposits more creosote per cord.

Chimney cleaning cost on Long Island runs $180–$350 for a standard chimney sweep (cleaning only, no repairs). A CSIA Level I inspection (required annually by NFPA) is typically $125–$200 if done separately, or bundled with cleaning for $250–$420. Level II inspection (required for any change of use, after chimney fire, or for real estate transaction) runs $350–$600 and includes camera inspection of the flue liner.

The most common question Long Island homeowners face after a chimney inspection is whether to repair or rebuild. The answer depends on the extent of deterioration, the age of the structure, and what materials are failing.

Chimney repair covers: tuckpointing (repointing deteriorated mortar joints between brick courses), crown repair or replacement (the concrete cap at the top of the chimney stack), cap installation or replacement, flashing repair (the metal seal between chimney and roof), and partial liner replacement. Most chimney repair work on Long Island runs $400–$3,500 depending on scope.

Chimney rebuild is warranted when: more than 30% of the brick or block is spalled or deteriorated beyond repair, the mortar joints are failed throughout the stack, the liner has severe cracks or separation (common in clay tile liners after a chimney fire), or the chimney has structural separation from the house. A full chimney rebuild on a typical Long Island colonial (two-story brick chimney, 20–35 feet) runs $6,500–$18,000 depending on height, access, and materials.

We scope every chimney before quoting repair vs. rebuild. A camera inspection of the flue liner catches liner damage that is invisible from the firebox or roof. We document findings with video and provide a written report with repair vs. rebuild recommendation and itemized pricing for both options.

We are a Nassau County-based CSIA-certified chimney company operating out of Oyster Bay, NY. Our Nassau County service coverage includes the full Town of Oyster Bay (Oyster Bay hamlet, Matinecock, Locust Valley, Cold Spring Harbor, Syosset, Bethpage, Plainview, Hicksville, Jericho, Woodbury, Old Bethpage, and East Norwich), the Town of North Hempstead (Manhasset, Great Neck, Port Washington, Roslyn, Mineola, New Hyde Park, and Carle Place), and the Town of Hempstead (Garden City, Rockville Centre, Valley Stream, Lynbrook, Malverne, Merrick, Bellmore, Wantagh, and Seaford).

In Nassau County, our most common jobs by volume are: chimney sweeping and Level I inspection ($250–$400 range, seasonally scheduled August through November for pre-season cleaning), tuckpointing on 1950s–1970s brick chimneys that are showing mortar failure, crown repair, and cap replacement. Older brick chimneys in the Matinecock and Locust Valley area frequently need full repointing at 40–60 years of age. We also do a significant volume of gas fireplace conversion flue liner work as Nassau County homeowners convert from wood to gas inserts.

Resources: how to find the best chimney company on Long Island, Long Island chimney service guide, and chimney cleaning cost on Long Island.