The Home Insulators

Insulation Contractors in Burlington County, NJ

The median Burlington County home was built in 1977, the year before New Jersey’s first statewide energy subcode took effect on 1 January 1978. Half the county, in other words, went up while insulation was still a builder’s choice, and 55.7% of the 185,617 housing units predate 1980 outright. The largest cohort is the 1960s and 70s at 31.2%, with 32,465 units from the 1970s alone. This is a county of ranches, splits and early colonials whose attics have been settling for fifty years.

The rest of the numbers set the scope. 64.4% of units are detached houses and 14.5% single-family attached — 26,992 townhouses and duplex halves — with 5.6% in two- to four-family buildings, 5.4% in buildings of twenty or more and 1.1% manufactured homes, 2,032 of them. 75.7% of occupied units are owner-occupied, which is who the utility rebates are written for. Gas heats 70.0% of homes, but 19.1% run on electricity, 7.2% on fuel oil and 2.1% on bottled gas — a wider fuel spread than most of the state.

Burlington is the largest county in New Jersey by land area and it changes character as you cross it. Along the Delaware sit the old river towns and the post-war townships behind them: Moorestown, Cinnaminson, Delran, Burlington Township and Willingboro. Inland are the highway suburbs built from the 1970s on, Mount Laurel, Evesham and the western half of Medford. Then the land turns sandy and the Pine Barrens take over the south and east, where clear dry nights run 10 to 15 degrees colder than the rest of the county because the sand sheds its heat so fast. The nine town pages carry the detail.

The Burlington County towns we work in

Each page gives that town’s numbers, the assemblies that fail there, and its utility.

  • Burlington Township — 31.0% built in the 1990s: full walls, but ducts and air handlers stranded in vented attics.
  • Cinnaminson — 33.8% of the township built in the 1960s: settled ranch attics, wind-washed eaves and crawl spaces.
  • Delran — 46.3% built in the 1960s and 70s, plus 10.5% in two- to four-unit buildings, double the county share.
  • Evesham — 20,090 units, 48.9% of them 1980s and 90s houses with the air handler in a vented attic.
  • Medford — 27.2% built in the 1970s, cathedral ceilings with no vent path, and 7.0% of it still on oil.
  • Moorestown — 23.8% of the township predates 1940, balloon-framed and knob-and-tubed, twice the county’s pre-1940 share.
  • Mount Laurel — 25.9% of homes share a party wall and 54.4% of the township went up in the 1980s and 90s.
  • Pemberton Township — 17.7% still on oil, 47.6% built in the 1960s and 70s, and Pinelands lake houses over open crawl spaces.
  • Willingboro — 51.2% built in the 1960s alone by Levitt, 90.2% before 1980, and the same attic in every park.

The houses across Burlington County

The 1960s and 70s house is the county’s house. Willingboro is 61.4% of that era, Pemberton Township 47.6%, Delran 46.3%, Cinnaminson 43.5%, Medford 35.9%, Evesham 26.8%, Moorestown 23.4%, Burlington Township 22.7% and Mount Laurel 21.2%. These are ranches, splits and the tract colonials that followed, and they fail the same way everywhere: loose-fill blown fifty years ago has settled to two or three inches, it runs tight to the eave with no baffle, and wind washes through the first few feet of it, so the rooms at the ends of the house never hold heat. Add an attic hatch with no gasket, open top plates over the interior partitions, a chimney chase and a bath fan venting into the attic. A split adds a band joist at each level change and a bedroom over the garage.

Ahead of that cohort sits the county’s newer half, 27.5% built in the 1980s and 90s and 16.8% since 2000. Mount Laurel is 54.4% of the 1980s and 90s, Evesham 48.9%, Burlington Township 36.8%, Medford 34.1% and Moorestown 19.1%. The walls in these houses are already full, so blowing them is the wrong sale. The heat leaves through the ceiling plane and, more than anywhere else in the county, through the mechanical system: builders in this era routinely put the air handler and the trunk duct in a vented attic, above the insulation, where every leaking joint on the return side pulls attic air into the house. Cathedral slopes framed with no vent baffle and cantilevered bump-outs finish the list.

14.5% of the county is single-family attached, 26,992 units, and it clusters hard. Mount Laurel is 25.9% attached — 5,178 townhouses and duplex halves — Evesham 18.8%, Burlington Township 13.3%, Moorestown 11.9% and Delran 9.3%. A party wall is normally built tight where you can see it and left open above the ceiling into a shared attic, so air travels the row and the end unit pays for it. That wall closes at the roof line before anything gets blown. Delran is the county’s small-apartment town at 10.5% in two- to four-unit buildings against 5.6% countywide, where an owner-occupied duplex is workable and the stair chase between units is usually the first fix. Buildings of twenty units or more are 5.4% of the county and 11.1% of Burlington Township, and those we turn down.

10.7% of the county predates 1940 — 19,799 units — and it is concentrated in the river towns. Moorestown alone is 23.8% pre-1940, more than twice the county share, with Burlington Township at 7.7%, Medford and Delran at 4.9% and Cinnaminson and Pemberton Township at 4.0%. These are balloon-framed houses with stud bays open from the sill to the attic floor, plaster on lath, brick or stone cellars and pre-1950 wiring to check before anything is blown into a wall. Many carry masonry walls with no cavity at all. On those the work is the attic floor, the cellar and the rim, and the joints where later additions meet the original, and we say plainly when a wall should be left alone.

The last group is defined by fuel. 7.2% of the county heats with oil and 2.1% with bottled gas, but that average hides Pemberton Township at 17.7% oil and Medford at 7.0%, out where the mains stop at the edge of the Pinelands. 19.1% of the county heats with electricity, and it is not just apartments: Delran is 23.7%, Pemberton Township 23.4%, Burlington Township 21.5%, Mount Laurel 21.3% and Willingboro 20.4%, much of it baseboard or a heat pump in a house that was never sealed. Those are the homes where air sealing pays back fastest. The county also holds 2,032 manufactured homes, 6.1% of Pemberton Township, with a shallow roof cavity and the ducts in the belly under the floor.

We seal before we insulate

Insulation slows heat moving through a surface. It does nothing about air moving through a gap. Bring a Willingboro attic up to full depth, leave the partition tops and the hatch open, and the house still runs cold on a windy night.

In the county’s dominant house, the 1960s or 70s ranch or split, the sequence is: push back the settled loose-fill, seal the top plates, the chases, the penetrations and the hatch, baffle the eaves so the new depth is not wind-washed, seal the band joists, and only then insulate to depth. In a 1990s colonial the ducts and the air handler cabinet come first. In a townhouse the party wall closes at the roof line. In a pre-1940 house it is blocking the open stud bays at the attic floor.

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

What insulation costs in Burlington County

Most of our projects run between $3,500 and $12,500. Across Burlington what moves the number is the shape of the attic — one long low plane over a ranch against a colonial with cathedral slopes and a duct run overhead — the number of bypasses to seal before insulating, whether ductwork or an air handler is in the scope, whether a party wall has to be closed, and whether the floor below is a basement, a crawl space or a slab.

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 Burlington County

Most of this county is a PSE&G county for both bills: Burlington Township, Cinnaminson, Delran, Moorestown, Mount Laurel and Willingboro take gas and electricity from PSE&G. Three towns break the pattern. JCP&L supplies the electricity in Pemberton Township, where the gas is PSE&G and reaches only a small corner. Evesham and Medford are split twice over: electricity between PSE&G and Atlantic City Electric, gas between South Jersey Gas across most of both townships and PSE&G across the rest. Out in the southeastern corner Bass River and Washington townships are on New Jersey Natural Gas, but none of the towns on this list are. Where two bills carry two names, either utility’s Whole Home program can take the project: start with whichever company bills the fuel that heats the house, because the gas programs require gas heat.

PSE&G Whole Home Energy Solutions pays up to $7,500 in rebates toward air sealing, insulation and related 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 starts with a home energy assessment by a BPI-certified contractor participating in PSE&G’s program, and the contractor sets that fee. PSE&G publishes no per-measure amounts. Separately, PSE&G’s Whole Home Energy Assessment is free for any PSE&G residential customer in a home of fewer than five units.

South Jersey Gas and JCP&L both publish the formula: $2,000 for a modeled five percent energy saving plus $200 for every percentage point above that, capped at $7,500 and at half the project cost. South Jersey Gas adds 0% on-bill repayment of $2,500 to $25,000 and requires an active account and gas heat; JCP&L adds 0% on-bill financing of $2,500 to $25,000 over 36, 60 or 84 months up to $10,000, or 120 months above that. Both offer their own residential customers a free Whole Home Energy Assessment. Atlantic City Electric pays up to $7,500 and no more than half the project cost, finances $2,500 to $25,000 through the program’s lender rather than on the bill, takes single-family residences only, and states no free walk-through.

Income-qualified households get the work outright. PSE&G Home Weatherization installs insulation, air sealing and duct sealing at no cost for households between 250% and 400% of the federal poverty level, or in a low- or moderate-income census tract, or in NJ SHARES. JCP&L, South Jersey Gas and Atlantic City Electric each cover up to $14,000 in upgrades plus $2,500 in health and safety repairs for income-qualified households. New Jersey Comfort Partners works at or below 250% of the federal poverty guidelines, $82,500 a year for a family of four, but refers homes heated with oil, propane or kerosene to the state’s weatherization office — which matters more in Pemberton Township than anywhere else here.

New Jersey’s IRA Home Energy Rebates have not launched. The state’s own page still describes them as in development and not open for applications. The federal Section 25C tax credit ended for anything placed in service after 31 December 2025, so there is no federal insulation credit on a 2026 job, whatever a flyer still claims. The full picture is in our New York and New Jersey rebate guide.

Code and climate in Burlington County

55.7% of Burlington’s housing predates 1980 and the median unit dates from 1977, a year before the state’s first energy subcode. Whatever is in those attics and walls was a builder’s decision. Burlington County is climate zone 4A, the milder of New Jersey’s two zones, though the sandy Pinelands ground gives those houses colder nights than the river towns.

New Jersey adopted the 2024 IECC on 17 August 2026. For new construction it sets R-49 ceilings — the 2021 edition it replaced called for R-60 — walls at R-30 in the cavity or R-20 plus R-5 continuous, windows at U-0.30 in the 4A counties, and air leakage of 3.0 air changes per hour at 50 pascals. A complete permit application filed under the old 2021 code is still accepted until about 16 February 2027.

Existing homes fall under New Jersey’s Rehabilitation Subcode. Insulating an attic does not require bringing the rest of the house to current code and does not require a blower-door test. Blown-in or batt insulation installed against the interior finish counts as ordinary maintenance with no permit; spray foam and other foam plastic insulation need a permit, which we pull as part of the job. R-49 is what we design to.

Common questions about insulation in Burlington County

Do you install insulation in Burlington County, NJ?

Yes, in the nine towns listed above and the county around them: the settled ranch and split attics of Willingboro, Cinnaminson and Delran, the attic ducts and party walls of Mount Laurel and Evesham, the cathedral slopes of Medford, the balloon-framed houses of Moorestown and the oil-heated Pinelands houses of Pemberton Township. Garden apartments and mid-rise rentals, where the envelope belongs to a management company rather than the person paying the heating bill, are not work we take.

How much does insulation cost in Burlington County?

Most projects run $3,500 to $12,500. The drivers are the shape of the attic, since a long low ranch plane with no headroom at the eave takes different work from a colonial with cathedral slopes and ducts overhead; the number of bypasses to seal before insulating; whether an air handler and duct runs are in the scope; whether a party wall has to be closed; and whether the floor below is a basement, a crawl space or a slab.

Are there insulation rebates in Burlington County?

Yes. PSE&G, JCP&L, South Jersey Gas and Atlantic City Electric all run Whole Home Energy Solutions, and each pays up to $7,500 in rebates on a project that includes air sealing and insulation, with 0% financing behind it. PSE&G, JCP&L and South Jersey Gas also give their own residential customers a free Whole Home Energy Assessment. Income-qualified households can have the work done at no cost through the utilities’ weatherization programs or New Jersey Comfort Partners.

Which utility do I have in Burlington County?

PSE&G supplies both bills in Burlington Township, Cinnaminson, Delran, Moorestown, Mount Laurel and Willingboro. Pemberton Township is JCP&L for electricity and PSE&G for the little gas that reaches it. Evesham and Medford are split: PSE&G or Atlantic City Electric for electricity, South Jersey Gas or PSE&G for gas, on boundaries that follow nothing visible from the road. Read the names on your own two bills rather than a map, since an account near a line can be served across it.

Free energy audit in Burlington County

We walk the attic, and in a ranch or split that means every plane, not the biggest one: the depth and condition of what is up there, the eave, the hatch, the partition tops and the chases. In a newer house we spend the visit on the air handler and the ducts. Underneath we look at the crawl space, the slab edge or the basement rim, since all three exist here. Then a written scope and a price, with no charge and no obligation.

Call 914-825-6824 or use the form below. Open 8am–8pm, seven days. We work out of New Rochelle, NY with a 100-plus in-house crew, and we hold manufacturer installer certifications from the spray foam manufacturers we use.

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