The Home Insulators

Insulation Contractors in Kearny, NJ

81.0% of Kearny was built before 1980, the highest pre-1980 share of any town we cover in Hudson County, and 36.9% of it predates 1940. The median unit dates from 1952. In a county of towers and rowhouses, Kearny is the outlier: 31.3% of its 15,340 units are detached houses and 45.4% of occupied units are owner-occupied, the highest detached share on our Hudson County list and an owner share second only to Secaucus, while only 9.4% of the stock sits in buildings of twenty or more.

That makes this the most conventional insulation market in the county. Most of what we do here is a house with a pitched roof, an attic you can stand up in at the ridge, a full cellar and an owner who lives in it. The rest is the two- and three-family stock: 4,275 units in two-unit buildings and 2,221 in three- and four-unit buildings, 42.4% of the town between them, most of it built for the mills.

75.5% of occupied units heat with gas. 3.8% burn oil and another 4.3% run on bottled gas, which is a high combined share for this county and changes the rebate conversation for those households, though not the physics of a cold attic.

The houses we insulate in Kearny

Of 15,340 units, 36.9% predate 1940, 25.8% went up in the 1940s and 50s, 18.4% in the 1960s and 70s, 10.9% in the 1980s and 90s and only 8.0% since 2000. Kearny became a township in 1867 out of Harrison Township and a town in 1899, and the pre-1940 third of its housing is mill housing. The Clark Thread Company put up two large mills in 1875 and two more in 1890, the Mile End Thread Mills followed in 1876, the Linen Thread Company in 1883 and Nairn Linoleum in 1887, and thousands of Scottish and Irish families came with them — the reason the town still calls itself Soccer Town, U.S.A.

The house they lived in is a two- or two-and-a-half-story frame building on a narrow lot, often a two-family with one flat per floor, with a pitched roof and a floored attic used for storage. Those attics are the job. Boards over the joists mean the cavity below them was never filled or holds a few inches of settled fill, and the boards themselves keep everyone from noticing. We lift what we need to, air seal the ceiling plane, the top plates, the chimney chase and the stair bulkhead, then insulate to depth and put the storage floor back on risers where the owner wants it.

Behind the plaster we expect balloon framing in the oldest of them: stud bays open from the cellar sill to the attic floor, so the outside walls vent straight into the attic. Blocking those bays at both ends comes before anything is blown anywhere. Knob-and-tube wiring is common in the pre-1940 stock and comes out before insulation goes into a wall. Many of these houses also carry asbestos-cement or aluminum siding added later; we do not drill through asbestos-cement, so those walls get filled from inside or left alone, and we say which at the walk-through.

The 25.8% built in the 1940s and 50s is the largest single cohort and the most familiar assembly in New Jersey: the cape. A cape fails at the knee wall, which has insulation on the room side and no air barrier behind it, facing a triangular attic open to the eave, with the floor joists running underneath the bedroom floor out to the soffit. The slopes are usually unbaffled and the flat attic above is shallow. The 18.4% from the 1960s and 70s brings ranches and split-levels with long low attics of settled loose-fill, wind-washed eaves, a cantilevered bay and a bedroom over the garage with open joist bays under it.

The Uplands, the Meadows and South Kearny

Kearny is three places. The Kearny Uplands hold nearly all of the housing, on the ridge above the Passaic; the Kearny Meadows and South Kearny, where the Hackensack and Passaic rivers meet, are largely industrial and give the town a total area of 10.27 square miles with 1.43 of it water. Arlington, in the north, took its name from Arlington Station on the Erie Railroad, and Schuylers Corner and West Arlington are the other names on the map. The 3,579,000-square-foot Western Electric Kearny Works employed as many as 24,000 people between 1925 and 1986; the houses built for that workforce are still standing and still under-insulated.

The Uplands are a ridge, which matters more than it sounds. Houses on a ridge get more wind on the walls and more wind-washing at the eaves, so a soffit-vented attic with loose-fill at the perimeter loses depth exactly where the ceiling meets the wall. Baffles and a proper wind block at the eave do more in those houses than another two inches across the middle of the attic. On the lower streets toward the meadows, cellars sit close to the water table and take water in a heavy storm; there we insulate the rim and the joist pockets, and we do not put closed cell foam on a foundation wall that floods.

We seal before we insulate

Insulation slows heat moving through a surface. It does nothing about air moving through a gap. Lay batts across a floored attic without sealing the ceiling plane beneath it and you have insulated a wind tunnel.

In a Kearny mill-era two-family or cape the order is: block the balloon-framed stud bays at the top plate and the sill; seal the attic floor — top plates, plumbing stack, chimney chase, stair bulkhead, bath fans and any open partition wall; block the joist bays at the eave behind a cape’s knee walls and put an air barrier on the back of the knee wall; baffle the slopes. Then insulate: the attic flat, the knee walls and slopes, the ceiling over any garage, and the rim in the cellar.

If a quote specifies a depth of insulation and never mentions air sealing, it is half a job.

What insulation costs in Kearny

Most of our projects run between $3,500 and $12,500. In a Kearny house the number moves with attic area and headroom, whether a storage floor has to come up and go back, how many feet of knee wall and eave need blocking in a cape, whether the walls are being dense-packed from inside behind asbestos-cement siding, and the length of rim in the cellar. A two-family is priced as one building, because the stair chase and the floor cavity between the units are shared. For the foam side of it, see what spray foam insulation costs.

Open cell foam runs R-3.9 to R-4.2 per inch. Closed cell runs R-6.9 to R-7.1 per inch and also acts as a vapor retarder, which is why it costs more and why it is right in some assemblies and unnecessary in others. All products are manufactured in the United States and meet applicable building code and safety standards. After air sealing and insulating, homeowners typically save 20% or more on heating and cooling.

Insulation rebates in Kearny

Kearny is PSE&G territory for both electric and gas. For the 75.5% of households on gas heat, that means one utility, one assessment and one program.

PSE&G Whole Home Energy Solutions offers up to $7,500 in rebates toward air sealing, insulation and the related envelope work, plus 0% on-bill repayment of up to $25,000 — 7 years for projects of $10,000 or less, 10 years above that or for income-qualified customers. It is written for owner-occupied homes of one to four units, which covers the detached houses and the two- and three-families that make up most of Kearny. It starts with a home energy assessment by a BPI-certified contractor participating in PSE&G’s program, who sets the fee for it. PSE&G does not publish per-measure rebate amounts.

Below that sit the no-cost programs. Between 250% and 400% of the federal poverty level, PSE&G Home Weatherization covers insulation, air sealing and duct sealing at no charge. At or below 250% of the federal poverty guidelines — $82,500 a year for a family of four — New Jersey Comfort Partners does the same in buildings of 1 to 14 individually metered units. And PSE&G’s Whole Home Energy Assessment is free to any residential gas or electric customer in a building of fewer than five units.

The 3.8% of Kearny heating with oil and the 4.3% on bottled gas sit outside the gas-heat programs; Comfort Partners refers oil, propane and kerosene households to the state’s weatherization office instead. Those houses still lose the same heat through the same attic, and the fuel they lose is more expensive per unit of heat than piped gas.

New Jersey’s IRA Home Energy Rebates are still not open; the state calls them in development and is not taking applications. The federal Section 25C tax credit expired for work placed in service after 31 December 2025, so a 2026 job carries no federal credit no matter what a mailer claims. The full picture is in our New York and New Jersey rebate guide.

Code and climate in Kearny

81.0% of the town went up before 1980 and 36.9% before 1940, which is to say before New Jersey’s first statewide energy subcode of 1 January 1978. A house built for a thread-mill family in the 1890s had no insulation requirement and, in our experience opening those walls, usually no insulation. Hudson County is climate zone 4A.

New construction in New Jersey has followed the 2024 IECC since 17 August 2026. It calls for R-49 ceilings where the 2021 edition called for R-60, walls of R-30 cavity insulation or R-20 with R-5 continuous outside it, windows no worse than U-0.30, and a blower-door result of 3.0 air changes per hour at 50 pascals. Complete applications filed under the older edition hold until about 16 February 2027. R-49 is the number the state considers right for this climate and what we design to.

Your house is covered instead by New Jersey’s Rehabilitation Subcode. Insulating an attic under it does not oblige you to bring the wiring, the windows or anything else up to today’s standard, and no blower-door test is called for. Batts or blown-in material against the interior finish are ordinary maintenance with no permit; foam plastic insulation, spray foam included, requires a permit that we pull.

Common questions about insulation in Kearny

Do you install insulation in Kearny, NJ?

Yes, and Kearny is a simple market for it: 31.3% of the stock is detached houses and another 42.4% is two- to four-family buildings, nearly all of it in the Uplands. We do attics and knee walls in the capes and ranches, floored storage attics in the mill-era houses, walls where the cavity and the wiring allow, and cellar rims. Buildings of twenty or more units, 9.4% of the town, are a board or landlord decision and not our work.

How much does insulation cost in Kearny?

Most projects run $3,500 to $12,500. The drivers are attic area and headroom, whether a storage floor has to be lifted and replaced, the feet of knee wall and eave to block in a cape, whether walls are dense-packed from inside behind asbestos-cement siding, and the rim length in the cellar. A two-family is quoted as one building because the stair chase and the floor cavity between units are shared. You get a written scope and a price after a free walk-through.

Are there insulation rebates in Kearny?

Yes. Kearny is PSE&G for both meters. Whole Home Energy Solutions covers owner-occupied buildings of one to four units, with rebates to $7,500 and 0% on-bill repayment to $25,000, and it begins with an assessment by a participating BPI-certified contractor. Income-qualified households can have the work done for nothing through PSE&G Home Weatherization or New Jersey Comfort Partners. Oil and propane households are sent to the state weatherization office. The state’s IRA rebates are not open, and federal 25C ended after 31 December 2025.

We heat with oil. Is insulating worth it here?

Usually more than for a neighbor on gas, because oil costs more per unit of heat delivered. 3.8% of Kearny still burns oil and 4.3% runs on bottled gas. The catch is the rebate side: the utility whole-home program is built around gas and electric heat, and Comfort Partners refers oil, propane and kerosene households to the state weatherization office. So the work often has to stand on its own savings, which in an uninsulated 1950s attic it generally does.

Free energy audit in Kearny

We go up into the attic, lift a board or two where there is a storage floor, check the depth and condition of what is there, look at the top plates, chases and eaves, then the knee walls in a cape, the garage ceiling and the cellar rim. Then you get a written scope and a price with the items that pay first at the top. No charge, no obligation.

Reach us at 914-825-6824 or through the form on the site. Our hours are 8am–8pm, seven days. The company works out of New Rochelle, NY, keeps a 100-plus in-house crew rather than subcontracting, and holds manufacturer installer certifications from the spray foam manufacturers we use.

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