Asheboro, NC
7 miles south
Center about 150 feet higher than Randleman's; 27,990 people, about 6 times Randleman's population
Insulation contractor serving AsheboroAttic Insulation in Randleman, NC
Blown-in attic insulation for Randleman, NC, 7 miles from Asheboro, plus removal and air sealing.
About Randleman and Its Homes
Randleman grew into a mill village on Deep River in the 1840s and, once the railroad arrived in 1889, grew into the largest town in Randolph County.
Randleman, in Randolph County, grew from 4,638 people in 2020 to 4,767 in 2025 (Census Bureau estimates), on 4.08 square miles. That makes Randleman the fourth-largest town in Randolph County.
Randleman has about 1,770 housing units, 3 percent of Randolph County's; about 61 percent of the city's households own their home.
Randleman at a Glance
- County: Randolph County
- Population: 4,767 (2025), 4,638 (2020), up 2.8%
- Land area: 4.08 square miles (1,168 people each)
- Housing units: about 1,770 (±290)
- Owner-occupied: 61% (±11); Randolph County: 73%
- Detached houses: 83% (±6); Randolph County: 68%
- Apartments: 15% (±9)
- Mobile homes: 2% (±2)
- Climate zone: 3 on both maps
- ENERGY STAR target for Randleman attics: R-49 from bare, R-38 over 3 to 4 inches (R-value guide)
Census Bureau estimates for Randleman, 2020 to 2024 (± margin of error).
Randleman Homes and Their Attics
Union Factory's Village on the Ridge
The Union Manufacturing Company opened the largest of the Deep River mills in 1848. To draw workers in from the farms, it built houses on the ridge south of the river, across from the mill, and a village called Union Factory grew up there. New owners renamed the mill Randleman Manufacturing after the Civil War, and the town later took the name too. If your house dates from Union Factory's first decades, its wires could be older than 1930. Old knob-and-tube circuits are a fire hazard where insulation touches them, ENERGY STAR cautions. Before we blow anything in, an electrician looks them over, and live runs stay bare.
Hosiery and Plaid Mills After the Railroad
The High Point, Randleman, Asheboro and Southern Railroad was finished in July 1889, the city's history records. Three more mills followed: Randleman Hosiery Mills, the first hosiery mill in the county, Plaidville Mills and Marie Antoinette. Building went on long after that boom. By the Census figures printed on this page, roughly half the homes in town went up before 1970. So the attic you have may sit over a mill-era house or one from the last few decades. In a newer house, look for recessed lighting. Unless a can light is rated IC for contact with insulation, insulation stays 3 inches away from it.
Attic Insulation in Randleman
If the joists show above the insulation in a Randleman attic, ENERGY STAR says to add more insulation.
From 1990 to 2009, about 35 percent of Randleman homes were built to codes below ENERGY STAR's target; check their eaves, where ENERGY STAR says insulation is often thinnest.
The Local Climate
Randleman's center sits about 690 feet above sea level, under a mile from NOAA's Randleman station, the best match for Randleman. The station's 1991 to 2020 normals average about 3,710 heating and 1,430 cooling degree days a year, so at Randleman's station, heating needs outweigh cooling.
NOAA estimated part of the Randleman station's normals from nearby stations, so treat them as approximate.
Homes by Age: What It Means for the Attic
About 83 percent of Randleman housing units are detached single-family houses.
Built from 1970 to 1989, about 15 percent of Randleman homes may hold settled fiberglass; check its depth against the joists.
Homes by Year Built
- Before 1940: 30% (±12), about 530 units
- 1940s: under 3%, about 20 units
- 1950s: 7% (±3), about 120 units
- 1960s: under 5%, about 40 units
- 1970s: 9% (±5), about 160 units
- 1980s: 8% (±5), about 145 units
- 1990s: 10% (±6), about 180 units
- 2000s: 22% (±8), about 400 units
- 2010s: 10% (±5), about 175 units
- 2020 or later: under 1%
Air Sealing and Duct Sealing in Randleman
In Randleman, 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 1,090 households; Randolph County: 71%
- Piped gas: 28% (±9), about 450 households
- Bottled or tank gas: under 4%, about 35 households
- Oil or kerosene: under 4%, about 25 households
Power, Gas and Rebates
Duke Energy supplies Randleman's electricity. For gas, Randleman is in the Randolph County franchise of Piedmont Natural Gas, and about 28 percent of the city's homes heat with piped gas. Duke's free House Call fits many Randleman homes: 68 percent heat with electricity.
Rebate to check in Randleman: Smart $aver Insulate and Seal (Duke Energy; Insulation Pros is an approved trade ally). Before a job in Randleman, check its current terms; the Randolph County page lists every program.
Attic Insulation Removal in Randleman
In a Randleman attic, only wet, moldy or animal-soiled insulation is vacuumed out (ENERGY STAR's test), once the cause is fixed, and after mice that Randleman attic is sanitized and deodorized; dry, clean insulation stays.
Also Serving Near Randleman
Nearest to Randleman first.
Franklinville, NC
8 miles southeast
Center about 220 feet lower than Randleman's; Its NOAA station logs about 210 fewer heating degree days than Randleman's
Attic insulation in FranklinvillePleasant Garden, NC
10 miles north
Center about 170 feet higher than Randleman's; Its NOAA station logs about 270 fewer heating degree days than Randleman's
Attic insulation in Pleasant GardenRamseur, NC
10 miles southeast
Center about 210 feet lower than Randleman's; 1,806 people, about a third of Randleman's population
Attic insulation in RamseurArchdale, NC
10 miles northwest
Center about 180 feet higher than Randleman's; Its NOAA station logs about 590 fewer heating degree days than Randleman's
Insulation contractor serving Archdale
Randleman Insulation FAQs
Is my Randleman house inside a historic district?
No, by the state's records. Only two places in Randleman are on the National Register, the 1906 Randleman Graded School and Saint Paul's Methodist Episcopal Church South, and no district of houses is listed. Even a listed house would carry no restriction for an owner paying for its upkeep or changes privately, according to the state preservation office. The county has a Historic Landmark Preservation Commission. Were your house ever designated a landmark, outside changes such as new roof vents would need its approval first.
Would a house from Randleman's mill days have any attic insulation?
Nothing required it when they were built. The state's insulation rule for new homes covers houses started from January 1, 1978 onward, and Randleman's mill houses date from long before then. So the crew reads the depth in more than one spot before adding to it. We also check for damp or matted insulation, which means the roof leaks. The roofer comes first, and insulation waits until the attic is dry.
Does attic insulation in Randleman need a permit?
Randleman City Hall can say whether Randolph County Building Inspections, the city itself or another office handles permits in Randleman; ask before work starts.
Helpful Guides
- Power from Duke Energy: high summer electric bills and home energy audits
Sources
Census Bureau figures for Randleman, NOAA normals for the Randleman station, Duke Energy (October 2026). Compiled by Insulation Pros. How the town pages are made.
Sources for the Randleman notes and questions (read October 20, 2026):
- Randleman, in The North Carolina Gazetteer (William S. Powell, 2nd ed., UNC Press 2010), NCpedia
- History of Randleman, City of Randleman
- St. Paul's Methodist Episcopal Church South, National Register nomination (NC HPO)
- Randleman Graded School, National Register nomination (NC HPO)
- N.C. Gen. Stat. 143-139.2, Enforcement of insulation requirements; certificate for occupancy
- Attic Insulation Project, ENERGY STAR
- Year Structure Built (table B25034), Randleman city, American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau via Census Reporter
- 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)
- N.C. Gen. Stat. 160D-947, Certificate of appropriateness required
Randleman, NC
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Insulation Pros is an insulation contractor serving North Carolina, Randleman and the rest of Randolph County included.
Reach us
Send the square footage of your Randleman attic, or call (336) 870-3893.