Camden County housing is shallow where it counts. The median unit dates from 1966, 31.3% of the stock came out of the 1960s and 70s and 22.8% out of the 1940s and 50s, and those decades framed cape slopes, split-level roof pockets and low crawl spaces with three to five inches of working depth. Spray foam insulation goes into a surface that has to be sealed and insulated at the same moment, in whatever space a rafter or a band joist actually gives you.
Utility gas heats 74.5% of occupied homes here, electricity 18.0% and fuel oil 4.6%, so the saving usually lands on a PSE&G, South Jersey Gas or Atlantic City Electric bill. 54.6% of the county’s units are detached and another 17.0% attached. In a detached house, and in the half of a twin that is yours, the surfaces foam was made for — the band joist on the block, the crawl space walls, the underside of the roof sheathing — sit inside your own envelope, with nobody’s board to ask.
Where spray foam insulation pays in Camden County houses
Crawl space walls, because so much of the county has no basement. This is flat coastal plain, and the builder who put up a rancher or a split here in the 1950s and 60s often set it on a slab or a shallow crawl instead of digging. Gloucester Township, 38.1% of it built in the 1960s and 70s, and Cherry Hill, 48.4%, are full of them. Once a crawl space is closed up, the Department of Energy lists 3 inches of closed cell on its walls against 10 inches of open cell, and says fiber should not go against a crawl space wall at all, because it collects and holds moisture. Closed cell takes rough block or fieldstone in one pass.
Band joists, in every era of house here. Building Science Corporation calls the joist ends the critical seal: one application ties foundation, sill, rim and subfloor into a single air barrier and keeps house air off cold wood. In Pennsauken, 82.3% of it built before 1980, and Haddon Township at 88.9%, that band is bare or holds a loose batt doing nothing. Rim foam may stay exposed up to 3 1/4 inches thick, at 0.5 to 2.0 pounds per cubic foot with a flame spread index of 25 or less and a smoke-developed index of 450 or less — roughly R-22 to R-23, and the smallest foam job we do.
Cape and cottage slopes. 37.2% of Pennsauken and 36.3% of Haddon Township went up in the 1940s and 50s, with 26.2% of Collingswood alongside them. The finished upstairs sits under rafters about 5 1/2 inches deep, with a knee wall in front and a side attic behind. Fiber in a bay that shallow cannot hit a useful number and still leave a vent channel, so closed cell goes on the sheathing and the slope comes inside the house. Where fiber is added under the foam on an unvented roof, the foam alone has to reach R-15 in this climate zone.
Splits, and the bedroom over the garage. The 1960s and 70s tract belt left a framed pocket where the upper roof lands on the lower one, open to both attics. Closed cell closes that pocket, where no fiber stays put, and the garage ceiling under a bedroom gets the same from below.
Attic ductwork in the newer townships. Voorhees is 47.6% 1980s and 90s and Winslow Township 38.6%, with another 21.5% of Winslow built since 2000. Houses of that age run an air handler and flexible duct through a vented attic, outside everything you paid to insulate. Foaming the roof deck brings the equipment indoors. R-49 takes about 7 inches of closed cell or 11 3/4 to 12 1/2 inches of open cell, and a 2×8 rafter is 7 1/4 inches deep, which is why these roofs end up closed cell or a hybrid.
Old houses that are already open. Haddonfield is 51.0% pre-1940. When a floor of one of those is gutted, open cell fills framing no batt was ever cut for and stops air climbing the long balloon-framed bays. Knob-and-tube turns up in this stock, and an electrician clears anything live before foam goes near it.
How we do spray foam insulation in Camden County
Foam bonds to clean dry wood or masonry, so whatever is in the bay comes out first. Wet, settled or rodent-fouled insulation is removed under containment into a HEPA insulation vacuum and the surface is cleaned before anything is sprayed. Mold growing on framing or sheathing is a remediation trade, and we come back once that work is done and the wood is dry.
Then the foam is chosen by the surface. Closed cell, R-6.9 to R-7.1 per inch, goes on band joists, crawl space and foundation walls and shallow rafters, and is a vapor retarder at about 1 1/2 inches. Open cell, R-3.9 to R-4.2 per inch, suits deeper roof bays and the irregular framing of a pre-war house, and under a roof it takes a vapor retarder coating, which the Department of Energy recommends in this zone too.
On the day, floors and finished surfaces get masked, the heating and cooling in the work area is shut down, and the crew checks the surface against the product data sheet: clean, dry, wood under 18 percent moisture content, nothing sprayed within 5 degrees of the dew point. The foam goes on in passes inside the manufacturer’s thickness limit, depth measured as the work moves. Everyone but the crew is out; the EPA reports manufacturers recommending 24 hours after high-pressure foam before anyone returns, and we give you that number beforehand.
Last comes the fire protection, named in the quote rather than assumed. Foam in living space and finished basements needs a thermal barrier such as 1/2-inch gypsum wallboard, hung by the drywall trade. In a crawl space or attic entered only for repairs, an ignition barrier or a foam tested for exposed use is enough; store boxes up there and that exception is gone.
What spray foam insulation costs in Camden County
Most of our projects run between $3,500 and $12,500. Foam is priced in board feet — a square foot an inch thick — so the band joist of a Collingswood twin and an R-49 roof deck over a Voorhees colonial sit at opposite ends of that range. What moves the number here: closed cell against open cell, how many roof planes a split has, whether a crawl space has to be cleared and worked at 30 inches of headroom, uneven block that swallows more material than a poured wall, old insulation coming out, and the fire barrier. Electrical work and roof repairs are priced by the trades that do them. The full breakdown sits in our spray foam insulation cost guide.
Rebates for spray foam insulation in Camden County
The county splits on utility lines. PSE&G bills both fuels in Pennsauken, Collingswood, Haddon Township, Haddonfield and most of Cherry Hill, where South Jersey Gas reaches the southern edge. Atlantic City Electric has the electric in Winslow Township, Voorhees and much of Gloucester Township, with South Jersey Gas on the gas side; Voorhees and Gloucester Township are split with PSE&G, so the bill decides, not the map. These programs pay for a whole-house scope rather than a product: air sealing plus the insulation the assessment calls for, which is what foam at a rim joist or roof deck already is.
PSE&G Whole Home Energy Solutions pays up to $7,500 and adds 0% on-bill repayment of up to $25,000, over seven years at $10,000 or less and ten above that or for income-qualified customers. It starts with an assessment by a BPI-certified contractor participating in PSE&G’s program, who sets that fee; no per-measure amounts are published. PSE&G’s Whole Home Energy Assessment is the free walk-through, for residential customers in homes of fewer than five units.
South Jersey Gas Whole Home Energy Solutions publishes its arithmetic: up to $7,500, made of $2,000 at a modeled 5% saving plus $200 for each further point, never more than half the project cost, with 0% on-bill repayment of $2,500 to $25,000. It needs an active account and gas heat and covers houses, townhomes, condos and buildings under four units, and it includes a complimentary assessment. Atlantic City Electric Whole Home Energy Solutions reaches the same $7,500 ceiling with 0% financing of $2,500 to $25,000, publishes no formula and no free walk-through, and is written for single-family residences only. Where the two bills come from two companies, start with whoever sells you your heating fuel and confirm with the other, and ask any installer, including us, whether they participate in the program you choose.
Between 250% and 400% of the federal poverty guidelines the work can be free, through PSE&G Home Weatherization, the Atlantic City Electric Home Weatherization Program or South Jersey Gas Home Weatherization for Income-Qualified Customers, and through New Jersey Comfort Partners at or below 250%, $82,500 for a family of four in 2026. New Jersey’s IRA Home Energy Rebates have not launched and are not open for applications. The federal 25C tax credit ended for anything placed in service after 31 December 2025, so nobody is claiming it on a 2026 foam job. Our New York and New Jersey rebate guide has the rest.
Code and climate in Camden County
Camden County is climate zone 4A, the milder end of the state, which changes what foam has to do. On an unvented roof with fiber underneath, the foam alone must reach R-15 here, against R-20 one zone north. A crawl space or basement wall takes R-10 continuous or R-13 cavity — about 1 1/2 inches of closed cell, half what the northern counties need. Ceilings are R-49 either way.
New Jersey adopted the 2024 IECC on 17 August 2026. New walls take R-30 in the cavity or R-20 plus R-5 continuous, new houses hold 3.0 air changes per hour at 50 pascals, and windows in the 4A counties reach U-0.30. Existing houses fall under the Rehabilitation Subcode, so foaming a rim joist or a roof deck does not drag the rest of the house up to code. With 71.7% of the county standing before New Jersey’s first statewide energy subcode of 1 January 1978, most of what we spray was framed with no insulation rule behind it.
Towns we serve in Camden County
We spray foam across all 36 Camden County municipalities; these towns have pages of their own.
Common questions about spray foam insulation in Camden County
Who installs spray foam insulation near me in Camden County?
We do, with our own crew out of New Rochelle, from the twins of the inner ring to the 1980s colonials of Voorhees and Winslow Township. Nothing goes to a subcontractor. Before quoting we look at the band joist, the crawl space walls, the rafter depth, the wiring and whatever is in the bays now, and we say where foam is worth its price and where blown-in or batts do the same job for less.
Closed cell or open cell spray foam for a Camden County house?
Usually both, in different places. Closed cell, R-6.9 to R-7.1 per inch, belongs on band joists, block and fieldstone foundations, the walls of a sealed crawl space and the shallow rafters over a cape slope, where it also slows vapor. Open cell, R-3.9 to R-4.2 per inch, suits a deep roof bay or the irregular framing of a Haddonfield or Collingswood house opened for renovation, and under a roof deck it takes a vapor retarder coating.
How much does spray foam insulation cost in Camden County?
Most of our projects run between $3,500 and $12,500. Sealing and insulating the band joist of one Pennsauken basement sits near the bottom; an R-49 roof deck over a large Cherry Hill colonial sits at the top. The drivers are board feet, closed against open cell, access in a low crawl space or a cape side attic, removal of whatever is in there now, and the fire barrier. Rebates can apply when foam is part of a whole-house project.
Is spray foam attic insulation right for a Camden County attic?
Only for certain attics. If the air handler and ducts are up there, if the roof is cut up with hips and dormers and cannot be vented properly, or if the space is becoming a room, foam on the roof deck is the answer, and in this 4A county it also cuts the July load on a hot duct run. If the attic is an open floor with clear soffit vents, air sealing and blown-in cellulose or fiberglass buy the same R-value for far less.
Free energy audit in Camden County
The walk-through follows the order of the work: the band joist and foundation walls, the crawl space if there is one, the rafters and side attic behind any knee wall, the roof pocket in a split, the ductwork and the floor over a garage. We note the wiring, the moisture and what is in the bays, then write down where foam goes, where something cheaper does the job, and what our part costs. No charge, no obligation.
Call 914-554-2289 or use the contact form, 8am–8pm, seven days. The Home Insulators is family-owned, works out of New Rochelle, NY, and sends its own 100-plus-person in-house crew; we never subcontract.
Get my free estimateor call 914-554-2289, 8am–8pm every day