Chimney Services in Teaneck, NJ

What the numbers suggest for chimneys in Teaneck

Census estimates place about 33% of Teaneck's 14,060 housing units in buildings from 1939 or earlier, with another 43% dating from 1940 to 1959. That means roughly three homes in four predate 1960. A masonry chimney of that age has had many decades of heating cycles, and the joints between its clay flue tiles are where wear tends to show first. Our guide to cracked flue tiles explains why a damaged tile matters even when the outside brick looks fine.

Utility gas heats about 75% of occupied homes, fuel oil about 6% and electricity about 13%. A newer gas furnace or boiler produces cooler, wetter exhaust than the equipment many old flues first served, and a technical guide from the liner maker DuraVent describes how that exhaust can condense inside an oversized masonry flue. If your heating equipment has been replaced, the flue it vents into should be part of the inspection.

About 73% of units are detached single-family houses and 16% are in buildings with five or more units. For apartments and condominiums, the chimney or vent is likely a shared building system, so the building's owner or association would normally arrange any work on it.

What a camera scan of an older flue can show

The CSIA describes a Level 2 inspection as including video scanning or a similar method to examine the internal surfaces and joints of all flue liners. We run a chimney camera whenever the flue allows it, and the photos come to you with our findings.

On a clay-lined flue, a scan can reveal:

• tiles with vertical or horizontal cracks;
• joints where the mortar has eroded and left a gap;
• tiles that have shifted out of line with the ones above or below;
• flaking on the tile face, or pieces of tile resting on the smoke shelf;
• deposits, nesting material or debris;
• earlier repairs, such as patched joints or a resurfaced section.

A scan has limits. It shows the inside face of the liner, not the brick behind it or the space between the two. Heavy deposits can hide a crack, so a flue is often swept before it is scanned. Sharp offsets can stop the camera before it reaches the bottom. If the camera finds no liner, that is also a finding: some old chimneys were built without one, and the CSIA notes that early researchers considered an unlined chimney a serious hazard.

From the scan to a repair decision

Once you have the photos, these questions usually sort out the next step. Work through them in order.

1. Was the flue clean when it was filmed?If the images are mostly black buildup, ask whether a sweep and a second pass would show more. Decisions made on an obscured scan are guesses.
2. Is the damage in a few joints or along the whole flue?Isolated joint gaps can sometimes be addressed with a joint repair system such as HeatShield. Damage spread through many tiles points toward resurfacing or a new liner. Our comparison of flue resurfacing and a new liner covers the trade-offs.
3. Does the flue still match the appliance?If the furnace, boiler or water heater has changed since the flue was built, size may matter more than cracks. A correctly sized liner can solve both problems at once.
4. Do the cracks follow a pattern that suggests heat damage?Many cracked tiles at once can be one of the signs of a past chimney fire. In that case a fire damage inspection comes before any repair choice.
5. Do you know where each problem is?Ask for the depth or location of each defect in the report. It lets you compare quotes for the same work.

Teaneck's Historic Preservation Commission

Teaneck's Historic Preservation Commission was created in 1988 and works under Chapter 33, Article IVA of the township's development regulations. According to the township, when the owner of a designated property wants to alter the exterior, the plans come to the Commission from the Building Department, Planning Board or Zoning Board for review. The township also states that interior alterations are not reviewed by the Commission.

For a designated property, that difference matters. Relining a flue happens inside the chimney, while a new crown, a rebuilt stack or a different cap changes what people see. If your house is designated, ask the township how a specific job will be handled before work is scheduled.

Local questions

Sources

1. U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates (tables B25034, B25040, B25024), via Census Reporter
2. Township of Teaneck: Historic Preservation Commission
3. CSIA: The Three Levels of Chimney Inspections
4. CSIA: About chimney liners
5. DuraVent: Relining Chimneys for Gas Appliances (technical guide, PDF)