34.8% of Voorhees Township’s 12,688 housing units went up in the 1980s, and 47.6% in the 1980s and 90s together. The median unit dates from 1983. Only 38.2% of the township predates New Jersey’s first statewide energy subcode of 1 January 1978, the lowest pre-code share of the Camden County towns we cover, and that changes the conversation completely.
In an older town the pitch is that there is nothing in the walls. Here there is something in the walls, and it is not the problem. A 1985 Voorhees house has R-11 or R-13 batts in the studs and R-19 to R-30 over the ceiling. What fails is the air handler and ductwork sitting in a vented attic outside the insulation, the cathedral slope built with no baffle, the bonus room over the garage, and the party wall that was never closed at the top.
The other Voorhees number that matters: electricity heats 21.5% of occupied units and bottled gas another 3.1%, against 72.3% on utility gas and only 1.9% on oil. A heat pump moving air through leaky attic ducts is the most expensive way to heat a house in this township, and it is also the easiest one to fix.
The houses we insulate in Voorhees
Of the 12,688 units, 2.3% predate 1940, 5.4% are 1940s and 50s, 30.5% are 1960s and 70s, 47.6% are 1980s and 90s and 14.2% has been built since 2000. Detached houses are 51.7% of the stock and attached houses another 10.3%; 17.8% of units sit in buildings of five to nineteen and 16.2% in buildings of twenty or more. 63.3% of occupied units are owner-occupied, one of the lowest owner shares of the Camden County towns we cover.
Echelon, in the western part of the township between Cherry Hill and Gibbsboro, held 11,896 people at the last count, better than a third of the township. Ashland has the PATCO station; Kirkwood, Kresson, Osage, Brighton Heights and Glendale fill out the rest, with Route 73 running down to Berlin Township and County Route 544 marking the Cherry Hill line.
The 1980s and 90s house here is a colonial or a contemporary, and its losses are all air and ducts. The air handler sits on a platform in the vented attic with flexible duct run across the joists, so the ductwork heats and cools the attic before it reaches a bedroom. Trays and cathedral slopes were framed without baffles, so the batts in them are wind-washed and the ceiling underneath is cold. The bonus room over the garage has open joist bays under it, and the recessed cans in the kitchen ceiling are open holes into the attic. We seal and insulate the duct runs, build an air-sealed platform under the equipment, close the garage ceiling, baffle the slopes and bring the flat to depth.
The 30.5% from the 1960s and 70s is the older Voorhees: ranches and split-levels on the coastal plain, many over a shallow crawl space or a slab rather than a full basement. The crawl space is the assembly people forget. Dirt floor, vents open all year, batts sagging out of the joists and ductwork running through the cold, which is why the floor is cold in February and the house smells damp in July. We close the vents, lay a vapor retarder, foam the walls and rim with closed cell and bring the space inside. A slab ranch loses at its edge and its sill plate instead, and the work moves to the perimeter.
The 2.3% that predates 1940 is farm ground: the Stafford Farm site, granted by George Washington to John Stafford in 1773 and farmed by that family for two centuries, is a vineyard now. In houses of that age we assume balloon framing and knob-and-tube wiring until the attic proves otherwise.
Echelon, the townhouse and the party wall
10.3% of Voorhees units are attached houses and 17.8% are in buildings of five to nineteen units. That is a lot of party walls, and the party wall is where a townhouse loses heat in ways an inspection report never mentions. In much of what went up here in the 1980s the wall between units was drywalled to the ceiling and left open above it, so the two attics are really one attic and your heated air rises into your neighbor’s. An end unit carries an exposed gable as well.
Closing the party wall at the roof deck, sealing the top plates on both sides of it, then insulating the ceiling plane is the whole job in a lot of these houses, and it is not expensive. What we need to know first is who owns the assembly. In a townhouse where you own the roof, the attic and the ceiling are yours to fix. In a condominium where the association owns the roof, the insulation inside your unit may still be yours while anything at the roof deck is not, and that is a question for your documents first.
The 16.2% in buildings of twenty or more are a different matter: no attic over the apartment, no cavity in the wall, and an envelope that belongs to the owner or the board. We say so on the phone rather than after a visit.
We seal before we insulate
Insulation slows heat moving through a surface. It does nothing about air moving through a gap, and nothing at all about conditioned air leaking out of a duct into an attic.
In an 1980s Voorhees house the order is: seal the duct joints and boots and insulate the runs, air-seal the platform under the air handler, close the top plates, flue chase, bath fans and recessed cans, block the joist bays over the garage, close the party wall at the deck if there is one, baffle the slopes, and only then blow the flat to depth. In a 1970s ranch it starts at the ceiling bypasses and ends at the crawl space.
If a quote specifies a depth of insulation and never mentions air sealing, it is half a job.
What insulation costs in Voorhees
Most of our projects run between $3,500 and $12,500. In a Voorhees house the number is driven by ductwork rather than square footage: how much flexible duct is in the attic, how many boots and joints have to be sealed, whether the platform is being rebuilt, and how many feet of cathedral slope need baffles. A townhouse party wall and ceiling plane is at the lower end, a large 1990s house with two systems in the attic at the upper end. There is more on foam pricing in our spray foam cost guide.
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 Voorhees
Voorhees is one of the townships where the two bills come from two companies. Gas is South Jersey Gas. Electric is split, roughly half Atlantic City Electric and half PSE&G, and both list the township in their territory, so no map settles it — the bill does. A house whose gas and electric come from two utilities can go through either one’s Whole Home program; start with whoever bills you for the fuel that heats the house and confirm with the other.
That matters here more than in most towns, because the gas programs require gas heat. If you are one of the 21.5% heating with electricity or the 3.1% on bottled gas, the gas utility’s program is not open to you and the electric utility is your route.
South Jersey Gas Whole Home Energy Solutions pays up to $7,500 per project: $2,000 at a modeled five percent energy saving plus $200 for every percentage point above that, never more than half the project cost, with 0% on-bill repayment of $2,500 to $25,000 over seven years up to $10,000 and ten above it. It needs an active South Jersey Gas account and gas heat, and it covers single-family houses, townhomes, condos and buildings under four units. South Jersey Gas also gives its customers a complimentary Whole Home Energy Assessment, which is the lighter walk-through, not the priced assessment the program runs on.
Atlantic City Electric Whole Home Energy Solutions pays to the same $7,500 ceiling, never more than half the cost, with 0% financing of $2,500 to $25,000 through the program’s lender rather than on the bill. Read the fine print if you own a condominium: it is written for single-family residences only, excluding any condominium or apartment with separately metered units above or below, and it states no free walk-through. On the PSE&G side, PSE&G Whole Home Energy Solutions pays up to $7,500 with 0% on-bill repayment of up to $25,000, and PSE&G’s Whole Home Energy Assessment is free for residential customers in homes of fewer than five units.
For income-qualified households the work is free. The Atlantic City Electric and PSE&G weatherization programs and New Jersey Comfort Partners install insulation, air sealing and duct sealing at no cost, Comfort Partners at or below 250% of the federal poverty guidelines, $82,500 a year for a family of four, and the utility programs between 250% and 400%. New Jersey’s IRA Home Energy Rebates have not launched: the state describes them as in development and not open for applications, so there is nothing to apply for. Nor is there a federal credit — Section 25C ended for anything placed in service after 31 December 2025. Our New Jersey and New York rebate guide lays out what is left.
Code and climate in Voorhees
38.2% of Voorhees was built before New Jersey’s first statewide energy subcode of 1 January 1978. The other side of that number is the useful one: most of the township was built under codes that existed but asked for very little, and a house built to the 1985 or 1995 standard is not a house built to today’s. Camden County is climate zone 4A.
The code in force is the 2024 IECC, adopted here on 17 August 2026. In a 4A county it asks new construction for a ceiling at R-49, where the 2021 edition wanted R-60; walls of R-30 in the cavity or R-20 with R-5 of continuous exterior insulation; glazing at U-0.30; and a measured 3.0 air changes per hour at 50 pascals. A complete application filed under the previous edition still holds until about 16 February 2027. Set those numbers against the R-19 to R-30 attic in a 1980s Voorhees colonial and the gap is obvious.
None of that is forced on a house already standing. Retrofits sit under New Jersey’s Rehabilitation Subcode: an attic job does not trigger an upgrade of the rest of the building, and no blower-door test is called for. Batt and blown-in insulation laid against the existing finish counts as ordinary maintenance and needs no permit. Spray foam and other foam plastics do need one, and we file it. Either way we design the attic to R-49.
Common questions about insulation in Voorhees
Do you install insulation in Voorhees, NJ?
Yes. Most of our work here is the 1980s and 90s colonial and contemporary that make up 47.6% of the township, where the job is duct sealing, the attic platform, the cathedral slopes and the flat. We also do the 1960s and 70s ranches and splits over crawl spaces, and townhouses where the party wall was never closed at the roof deck. We do not work inside apartments in buildings of twenty or more units.
How much does insulation cost in Voorhees?
Most projects run $3,500 to $12,500. Here the number tends to follow the ductwork rather than the floor area: how much flexible duct sits in the attic, how many boots and joints need sealing, whether the air handler platform is rebuilt, and how many feet of cathedral slope have to be baffled before they can be filled. A townhouse party wall and ceiling is usually a smaller job. You get a written scope and a fixed price after a free walk-through.
Are there insulation rebates in Voorhees?
Yes, but check your bills first. Gas is South Jersey Gas; electric is split roughly half and half between Atlantic City Electric and PSE&G. Each of the three runs Whole Home Energy Solutions to a $7,500 rebate ceiling with 0% repayment or financing up to $25,000. The gas program requires gas heat, so an electrically heated house goes through the electric utility. Atlantic City Electric’s program is for single-family residences only. Income-qualified households can get the work at no cost through Comfort Partners.
We have a heat pump and the ducts run through the attic. Is insulation worth it?
It is usually the best job in the house. A heat pump delivers air at a lower temperature than a furnace, so anything lost into a vented attic hurts more, and 21.5% of Voorhees heats this way. Sealing the duct joints and boots, insulating the runs, air-sealing the platform under the air handler and bringing the flat to depth puts that capacity back into the rooms. In some houses the better answer is foam at the roof line, so the equipment is no longer outdoors.
Free energy audit in Voorhees
We go up into the attic first and spend most of the visit there, because in a Voorhees house that is where the money is: the air handler, the duct runs and their condition, the platform, the baffles or lack of them in the slopes, the depth of what is on the flat. Then the garage ceiling, the party wall if you are attached, the rim and the crawl space. You get a written scope and a price at the end of it, at no charge.
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.
Learn more
- Insulation contractors across Camden County
- Insulation contractors in Cherry Hill
- Insulation contractors in Gloucester Township
- New Jersey insulation rebates in full
- Duct insulation
- Air sealing
- What happens during an energy audit