Kings Mountain, NC
5 miles southwest
Median home built 1976 (Bessemer City: 1968); 12,117 people, about twice Bessemer City's population
Attic insulation in Kings MountainAttic Insulation in Bessemer City, NC
Blown-in attic insulation for Bessemer City, NC, 5 miles from Kings Mountain, plus removal and air sealing.
About Bessemer City and Its Homes
Bessemer City was laid out in 1891 by investors who meant to mine iron ore and make steel beside the railroad, and it was incorporated in 1893. The steelworks never came, but cotton mills did from 1896, and many of its early homes were plain frame houses built for mill families.
Bessemer City, in Gaston County, grew from 5,445 people in 2020 to 5,834 in 2025 (Census Bureau estimates), on 5.64 square miles.
Bessemer City has about 2,400 housing units, 2 percent of Gaston County's; about 66 percent of the city's households own their home.
Bessemer City at a Glance
- County: Gaston County
- Population: 5,834 (2025), 5,445 (2020), up 7.1%
- Land area: 5.64 square miles (1,034 people each)
- Housing units: about 2,400 (±268)
- Median year built: 1968 (±5); Gaston County: 1982
- Owner-occupied: 66% (±10); Gaston County: 67%
- Detached houses: 83% (±6); Gaston County: 73%
- Attached houses: under 3%
- Apartments: 12% (±6)
- Mobile homes: 4% (±4)
- Climate zone: 3 on both maps
- ENERGY STAR target for Bessemer City attics: R-49 from bare, R-38 over 3 to 4 inches (R-value guide)
Census Bureau estimates for Bessemer City, 2020 to 2024 (± margin of error).
Bessemer City Homes and Their Attics
Frame Houses From the First Mill Years
Southern Cotton Mills, the town's first mill, began running in 1896 and put up its first thirty mill houses, according to the Central School nomination. A photograph from about 1914, described in the downtown district's nomination, shows plain one- and two-story frame houses on the north side of the tracks. If a brick chimney from those years rises through your ceiling, it needs special handling. Metal flashing bedded in high-temperature caulk covers the opening around it, never foam. Insulation stays back from the brick, and ENERGY STAR notes the usual code gap for masonry is 2 inches, held by a sheet-metal dam.
Wires and Pipes That Came After the Houses
Bessemer City's first houses went up ahead of its utilities. Electric lines reached town in 1909, and water and sewer lines were laid between 1912 and 1914, the downtown nomination records. In the earliest houses, then, the wiring and plumbing were added after the walls and ceilings were already built. Runs added that way can pass up through the attic. ENERGY STAR lists wiring holes, plumbing vent pipes and electrical boxes among the leaks to seal before insulating. Any of the original knob-and-tube circuits, the kind used up to about 1930, gets an electrician's look before insulation goes near it.
Attic Insulation in Bessemer City
About 55 percent of Bessemer City's homes predate 1970; if your joists show above the insulation, ENERGY STAR says to add more insulation.
Built from 1940 to 1969, about 35 percent of Bessemer City homes often have little insulation.
The Local Climate
Bessemer City's center sits about 900 feet above sea level, 12 miles from NOAA's Lincolnton 4 W station, the best match for Bessemer City. The station's 1991 to 2020 normals average about 3,330 heating and 1,470 cooling degree days a year, so at Bessemer City's station, heating needs outweigh cooling.
Readings change over short distances around Bessemer City: NOAA's Gastonia Municipal Airport station, 10 miles away, averages about 2,870 heating degree days.
Homes by Age: What It Means for the Attic
About 83 percent of Bessemer City housing units are detached single-family houses.
Built from 1970 to 1989, about 30 percent of Bessemer City homes may hold settled fiberglass; check its depth against the joists.
About 70 percent of Bessemer City's housing units predate 1980; nearly all predate the state's 1978 insulation rule too.
Homes by Year Built
- Before 1940: 19% (±6), about 460 units
- 1940s: 9% (±5), about 205 units
- 1950s: 7% (±5), about 175 units
- 1960s: 17% (±6), about 420 units
- 1970s: 20% (±6), about 470 units
- 1980s: 10% (±4), about 230 units
- 1990s: 6% (±4), about 150 units
- 2000s: 5% (±3), about 120 units
- 2010s: 5% (±3), about 130 units
- 2020 or later: under 3%, about 35 units
Air Sealing and Duct Sealing in Bessemer City
In Bessemer City, about 56 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: 56% (±8), about 1,160 households; Gaston County: 57%
- Piped gas: 42% (±8), about 870 households
Power, Gas and Rebates
Power in and around Bessemer City comes from Duke Energy Carolinas and Rutherford EMC; your bill says which. Bessemer City's natural gas comes from the city's own municipal system, and about 42 percent of the city's homes heat with it. Duke's free House Call fits many Bessemer City homes: about 56 percent heat with electricity.
Rebate to check if Duke Energy Carolinas serves your Bessemer City home: Smart $aver Insulate and Seal (Duke Energy; Insulation Pros is an approved trade ally). Before a job in Bessemer City, check its current terms; the Gaston County page lists every program.
Attic Insulation Removal in Bessemer City
In a Bessemer City attic, only wet, moldy or animal-soiled insulation is vacuumed out (ENERGY STAR's test), once the cause is fixed, and after mice that Bessemer City attic is sanitized and deodorized; dry, clean insulation stays.
Also Serving Near Bessemer City
Nearest to Bessemer City first.
Gastonia, NC
6 miles southeast
Median home built 1978 (Bessemer City: 1968); Its NOAA station logs about 460 fewer heating degree days than Bessemer City's
Attic insulation in GastoniaDallas, NC
6 miles east
Its NOAA station logs about 330 fewer heating degree days than Bessemer City's
Attic insulation in DallasHigh Shoals, NC
9 miles northeast
Median home built 1984 (Bessemer City: 1968); 637 people, about a ninth of Bessemer City's population
Attic insulation in High Shoals
Bessemer City Insulation FAQs
Does the downtown historic district include my Bessemer City house?
Probably not. The Bessemer City Downtown Historic District, listed in 2014, covers the commercial center and two mill complexes. Its nomination describes the houses on Washington Avenue and the streets east and south of the center as lying outside it. And a house that is listed is still yours to work on: Register status alone places no limits on private owners spending private money, per the State Historic Preservation Office. No local preservation commission for the city appears on the state's 2023 list.
Why does my old Bessemer City house stay drafty even with insulation upstairs?
Likely because air is moving around the insulation. ENERGY STAR points to darkened, dirty patches in old insulation as the sign of air leaking up from the rooms below, carrying dust that the fibers catch. In a house whose wiring and plumbing came after it was built, those leaks can gather where the runs pass into the attic. We find and seal them first. The dirty insulation itself is usually fine to leave in place.
Could the old insulation in a Bessemer City attic be vermiculite?
It could: about 35 percent of Bessemer City's homes predate 1960. If a Bessemer City 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 Bessemer City need a permit?
Bessemer City's city hall can say whether Gaston County Building Inspections, the city itself or another office handles permits in Bessemer City; ask before work starts.
Sources
Census Bureau figures for Bessemer City, NOAA normals for the Lincolnton 4 W station (October 2026). Compiled by Insulation Pros. How the town pages are made.
Sources for the Bessemer City notes and questions (read October 20, 2026):
- Bessemer City Downtown Historic District, National Register nomination (NC HPO)
- Bessemer City, in The North Carolina Gazetteer (William S. Powell, 2nd ed., UNC Press 2010), NCpedia
- Central School, Bessemer City, National Register nomination (NC HPO)
- Furnace Flues Require Special Sealing Techniques, ENERGY STAR do-it-yourself guide
- Attic Air Sealing Project, ENERGY STAR
- Attic Insulation Project, ENERGY STAR
- NC Listings in the National Register of Historic Places, NC State Historic Preservation Office
- What Is the National Register of Historic Places?, NC State Historic Preservation Office
- Historic Preservation Commission Staff in North Carolina, listed by county, as of 2/20/2023 (NC HPO)
Bessemer City, NC
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Insulation Pros is an insulation contractor serving North Carolina, Bessemer City and the rest of Gaston County included.
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Send the square footage of your Bessemer City attic, or call (336) 870-3893.