_03_(cropped).jpg){kind=link}
Middleburg, NC
7 miles northeast
98 people, under a tenth of Henderson's population
Attic insulation in MiddleburgAttic Insulation in Henderson, NC
Blown-in attic insulation for Henderson, NC, in Vance County, plus removal and air sealing.
About Henderson and Its Homes
Henderson, the Vance County seat, grew up around a Raleigh and Gaston Railroad depot built in 1837 and was chartered in 1841. Its real growth came after it became the new county's seat in 1881, which is why the oldest buildings still standing in town date from the 1880s.
Henderson, in Vance County, fell from 15,139 people in 2020 to 15,013 in 2025 (Census Bureau estimates), on 8.62 square miles. No town in Vance County has more people than Henderson.
Henderson has about 7,300 housing units, 38 percent of Vance County's; 39 percent of the city's households own their home. About 6,200 of those 7,300 units were someone's usual home in the Census Bureau's 2020 to 2024 survey; the heating and owner figures on this page describe those 6,200.
Henderson at a Glance
- County: Vance County
- Population: 15,013 (2025), 15,139 (2020), down 0.8%
- Land area: 8.62 square miles (1,742 people each)
- Housing units: about 7,300 (±337)
- Median year built: 1968 (±2); Vance County: 1982
- Owner-occupied: 39% (±5); Vance County: 60%
- Detached houses: 70% (±5); Vance County: 63%
- Attached houses: 3% (±1)
- Apartments: 23% (±5)
- Mobile homes: 5% (±2)
- Climate zone: 4 (state code), 3 (2021 map)
- ENERGY STAR target for Henderson attics: R-49 from bare, R-38 over 3 to 4 inches (R-value guide)
Census Bureau estimates for Henderson, 2020 to 2024 (± margin of error).
Henderson Homes and Their Attics
Victorian Houses on Burwell and Chavasse Avenues
For its 2024 report, the county survey went back to houses recorded decades earlier on Burwell Avenue, Chavasse Avenue, Charles Street, Rowland Street and nearby blocks. Most of the residences it lists there are dated from the 1880s to the 1910s. Mistletoe Villa on Young Avenue, built from 1883 to 1885, is a two-story frame Queen Anne house and one of the town's National Register listings. Where a house was first wired before about 1930, ENERGY STAR cautions that knob-and-tube runs and insulation make a fire risk together. An electrician should rule out live runs before any new insulation goes in.
Mill Villages of North and South Henderson
Henderson Cotton Mill opened in 1895 and Harriet Cotton Mill in 1901, and villages of workers' houses grew up near them. Graded schools followed in the north and south ends of town in 1914 and 1922 for children from those villages, then another in 1936 for a northern mill district. The 2024 survey says the company housing itself has not yet been studied in detail, so no report describes how these houses were built. We go by the house in front of us: each roof section is measured separately, and new insulation is spread level with no thin spots.
Postwar Ranches North and West of Downtown
After World War II, the survey says, new subdivisions spread mostly to the north and west of downtown, filled with Minimal Traditional houses, ranches and split-levels. The city's housing numbers on this page put about half of its homes before 1970. Under a ranch's low-pitched roof, the attic pinches down to almost nothing where it meets the outer walls. ENERGY STAR observes that the eaves of an attic sometimes carry far less insulation than its middle. Baffles go in at the soffits first, keeping an air path open while the edges are filled.
Attic Insulation in Henderson
About 55 percent of Henderson's homes predate 1970; if your joists show above the insulation, ENERGY STAR says to add more insulation.
Built from 1940 to 1969, 45 percent of Henderson homes often have little insulation.
The Local Climate
Henderson's center sits about 500 feet above sea level, 2 miles from NOAA's Henderson 2 NNW station, the best match for Henderson. The station's 1991 to 2020 normals average about 3,890 heating and 1,440 cooling degree days a year, so at Henderson's station, heating needs outweigh cooling.
Readings change over short distances around Henderson: NOAA's Henderson 4 NNE station, 3 miles away, averages about 3,430 heating degree days.
Homes by Age: What It Means for the Attic
Some 70 percent of Henderson housing units are detached single-family houses.
Built from 1970 to 1989, 24 percent of Henderson homes may hold settled fiberglass; check its depth against the joists.
About 70 percent of Henderson's housing units predate 1980; nearly all predate the state's 1978 insulation rule too. Renters hold 61 percent of Henderson's occupied homes, so many attic decisions rest with landlords.
Homes by Year Built
- Before 1940: 10% (±3), about 720 units
- 1940s: 3% (±2), about 245 units
- 1950s: 18% (±4), about 1,350 units
- 1960s: 23% (±5), about 1,720 units
- 1970s: 14% (±3), about 1,020 units
- 1980s: 10% (±3), about 700 units
- 1990s: 9% (±3), about 650 units
- 2000s: 9% (±4), about 660 units
- 2010s: 3% (±2), about 210 units
- 2020 or later: under 2%, about 45 units
Air Sealing and Duct Sealing in Henderson
In Henderson, 68 percent of homes heat with electricity; where that heat is forced air, ducts often run through the attic.
Air sealing comes first, as the EPA advises: wire and pipe holes, wall tops and soffits.
How Homes Here Are Heated
- Electricity: 68% (±5), about 4,200 households; Vance County: 74%
- Piped gas: 30% (±5), about 1,860 households
- Oil or kerosene: 1% (±1), about 65 households
Power, Gas and Rebates
Duke Energy Progress serves most of Henderson, Mecklenburg Electric Cooperative its edges; your bill says which. For gas, Henderson is in the Vance County franchise of Enbridge Gas North Carolina, and 30 percent of the city's homes heat with piped gas. Duke's free House Call fits many Henderson homes: 68 percent heat with electricity.
Rebate to check in Henderson: Smart $aver Insulate and Seal (Duke Energy; Insulation Pros is an approved trade ally). Before a job in Henderson, check its current terms; the Vance County page lists every program.
Attic Insulation Removal in Henderson
In a Henderson attic, only wet, moldy or animal-soiled insulation is vacuumed out (ENERGY STAR's test), once the cause is fixed, and after mice that Henderson attic is sanitized and deodorized; dry, clean insulation stays.
Also Serving Near Henderson
Nearest to Henderson first.
Kittrell, NC
7 miles south
Median home built 1976 (Henderson: 1968); 127 people, under a tenth of Henderson's population
Attic insulation in KittrellOxford, NC
10 miles west
Power from Duke Energy (Henderson: Duke Energy Progress); Its NOAA station logs about 320 fewer heating degree days than Henderson's
Attic insulation in OxfordStovall, NC
12 miles northwest
333 people, under a tenth of Henderson's population
Attic insulation in StovallNorlina, NC
15 miles northeast
Median home built 1984 (Henderson: 1968); 924 people, under a tenth of Henderson's population
Attic insulation in Norlina
Henderson Insulation FAQs
Is there a historic district commission in Henderson that reviews house work?
None appears on the state's list. The state historic office's 2023 roster of local commissions skips Vance County entirely. Henderson's one National Register district covers the downtown business blocks, and a Register listing, by the state office's own account, leaves owners spending their own money free to alter their buildings. Insulating an attic needs no historic approval here. For outside changes, the city can confirm.
Did Henderson's mill houses come with any attic insulation?
Nothing required it. The mill villages grew with mills that opened in 1895 and 1901, decades before 1978, the first year North Carolina made a new home's occupancy depend on meeting insulation standards. No source we found says whether the mills insulated them, so we assume nothing. Depths can change from one roof section to the next, and the crew measures each section on install day before adding anything.
Could the old insulation in a Henderson attic be vermiculite?
It could: about 32 percent of Henderson's homes predate 1960. If a Henderson attic holds a pebble-like gray-brown or silver-gold fill, leave it undisturbed: the EPA says vermiculite may contain asbestos.
Does attic insulation in Henderson need a permit?
Henderson City Hall can say whether Vance County Planning and Development, the city itself or another office handles permits in Henderson; ask before work starts.
Helpful Guides
- Power from Duke Energy Progress: high summer electric bills and home energy audits
Sources
Census Bureau figures for Henderson, NOAA normals for the Henderson 2 NNW station, Duke Energy Progress (October 2026). Compiled by Insulation Pros. How the town pages are made.
Sources for the Henderson notes and questions (read October 20, 2026):
- Vance County Comprehensive Architectural Survey, Phase 1 report, 2024 (NC HPO)
- Henderson, in The North Carolina Gazetteer (William S. Powell, 2nd ed., UNC Press 2010), NCpedia
- Mistletoe Villa, National Register nomination (NC HPO)
- Attic Insulation Project, ENERGY STAR
- West End School, National Register nomination (NC HPO)
- Adding Attic Insulation, ENERGY STAR do-it-yourself guide
- Year Structure Built (table B25034), Henderson city, American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau via Census Reporter
- Post-World War II and Modern Architecture in Raleigh, North Carolina, 1945-1965, National Register multiple property documentation form (NC HPO)
- About Attic Ventilation, ENERGY STAR do-it-yourself guide
- Historic Preservation Commission Staff in North Carolina, listed by county, as of 2/20/2023 (NC HPO)
- Henderson Central Business Historic District, National Register nomination (NC HPO)
- What Is the National Register of Historic Places?, NC State Historic Preservation Office
- N.C. Gen. Stat. 143-139.2, Enforcement of insulation requirements; certificate for occupancy
Henderson, NC
Open in Google Maps (opens in a new tab)Serving Henderson, NC
Insulation Pros is an insulation contractor serving North Carolina, Henderson and the rest of Vance County included.
Reach us
Send the square footage of your Henderson attic, or call (336) 870-3893.