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Stokesdale, NC
4 miles north
Median home built 2002 (Oak Ridge: 1997)
Attic insulation in StokesdaleAttic Insulation in Oak Ridge, NC
Blown-in attic insulation for Oak Ridge, NC, in Guilford County, plus removal and air sealing.
About Oak Ridge and Its Homes
Oak Ridge grew up around a school founded on the ridge in 1853, now Oak Ridge Military Academy, and the present town was incorporated in 1998. Most of its houses were built in 1970 or later, while many of its older farmhouses and school-era homes sit inside a local historic district along Oak Ridge Road.
Oak Ridge, in Guilford County, grew from 7,637 people in 2020 to 7,896 in 2025 (Census Bureau estimates), on 16.8 square miles. That makes Oak Ridge the fifth-largest town in Guilford County.
Oak Ridge has about 2,700 housing units, 1 percent of Guilford County's; 92 percent of the town's households own their home.
Oak Ridge at a Glance
- County: Guilford County
- Population: 7,896 (2025), 7,637 (2020), up 3.4%
- Land area: 16.8 square miles (471 people each)
- Housing units: about 2,700 (±170)
- Median year built: 1997 (±3); Guilford County: 1987
- Owner-occupied: 92% (±3); Guilford County: 60%
- Detached houses: 98% (±9); Guilford County: 62%
- Attached houses: 1% (±1)
- Climate zone: 4 (state code), 3 (2021 map)
- ENERGY STAR target for Oak Ridge attics: R-49 from bare, R-38 over 3 to 4 inches (R-value guide)
Census Bureau estimates for Oak Ridge, 2020 to 2024 (± margin of error).
Oak Ridge Homes and Their Attics
One-Story Houses Built for Academy Staff
The town's design handbook calls the plain National Folk style the most common one across the historic district. Near the Academy campus it points to one-story frame houses built to house school staff, one from 1910 and one from about 1925. The first follows a hall-and-parlor plan, two rooms wide and one deep. The second is two rooms deep under a side-gabled roof. In a one-story house of this kind, there is barely any room between rafters and ceiling joists along the outside walls. That is where, ENERGY STAR notes, insulation can be thin even when the center of the attic is well covered. Baffles at the eaves let the outer bays be filled while the soffit vents stay open.
I-Houses With Chimneys at the Gable Ends
The handbook counts three National Folk I-houses in the district, two stories tall and one room deep, including one from 1898 and one from 1920. Each has two chimneys on the outside of its end walls. A chimney built against the outside of the house does not pass through the attic floor, so the usual chimney gap is not where these houses leak. The leaks to look for are the holes cut later for wiring and plumbing, the attic hatch, and any chase that runs up through the house. ENERGY STAR advises sealing those openings before any insulation goes in.
Attic Insulation in Oak Ridge
Some 9 percent of Oak Ridge's homes predate 1970; if your joists show above the insulation, ENERGY STAR says to add more insulation.
From 1990 to 2009, about 50 percent of Oak Ridge homes were built to codes below ENERGY STAR's target; check their eaves, where ENERGY STAR says insulation is often thinnest.
The Local Climate
Oak Ridge's center sits about 940 feet above sea level, 6 miles from NOAA's Greensboro PTI Airport station, the best match for Oak Ridge. The station's 1991 to 2020 normals average about 3,500 heating and 1,550 cooling degree days a year, so at Oak Ridge's station, heating needs outweigh cooling.
Homes by Age: What It Means for the Attic
About 98 percent of Oak Ridge housing units are detached single-family houses.
Built from 1970 to 1989, 25 percent of Oak Ridge homes may hold settled fiberglass; check its depth against the joists.
About 20 percent of Oak Ridge's housing units predate 1980; nearly all predate the state's 1978 insulation rule too.
Homes by Year Built
- Before 1940: 1% (±1), about 20 units
- 1940s: under 1%
- 1950s: 3% (±3), about 85 units
- 1960s: 4% (±3), about 115 units
- 1970s: 12% (±4), about 320 units
- 1980s: 13% (±4), about 350 units
- 1990s: 25% (±5), about 670 units
- 2000s: 27% (±7), about 720 units
- 2010s: 12% (±3), about 320 units
- 2020 or later: 3% (±2), about 80 units
Air Sealing and Duct Sealing in Oak Ridge
In Oak Ridge, about 50 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: 50% (±6), about 1,320 households; Guilford County: 54%
- Piped gas: 45% (±6), about 1,200 households
- Bottled or tank gas: 4% (±2), about 105 households
Power, Gas and Rebates
Duke Energy serves most of Oak Ridge, EnergyUnited its edges; your bill says which. For gas, Oak Ridge is in the Guilford County franchise of Piedmont Natural Gas, and about 45 percent of the town's homes heat with piped gas. Duke's free House Call fits many Oak Ridge homes: about 50 percent heat with electricity.
Rebate to check in Oak Ridge: Smart $aver Insulate and Seal (Duke Energy; Insulation Pros is an approved trade ally). Before a job in Oak Ridge, check its current terms; the Guilford County page lists every program.
Attic Insulation Removal in Oak Ridge
In an Oak Ridge attic, only wet, moldy or animal-soiled insulation is vacuumed out (ENERGY STAR's test), once the cause is fixed, and after mice that Oak Ridge attic is sanitized and deodorized; dry, clean insulation stays.
Also Serving Near Oak Ridge
Nearest to Oak Ridge first.
Summerfield, NC
6 miles east
Median home built 2000 (Oak Ridge: 1997)
Insulation contractor serving SummerfieldKernersville, NC
7 miles southwest
Median home built 1995 (Oak Ridge: 1997); Power from Duke Energy Carolinas (Oak Ridge: Duke Energy)
Attic insulation contractor serving KernersvilleGreensboro, NC
11 miles southeast
Median home built 1985 (Oak Ridge: 1997); 308,667 people, about 39 times Oak Ridge's population
Insulation contractor serving Greensboro
Oak Ridge Insulation FAQs
Does insulating my attic in the Oak Ridge Historic District need the commission's approval?
Usually not. The town's design handbook says changes to a building's interior need no certificate of appropriateness, unless the property is also a designated Guilford County landmark, whose rules can reach inside. It also lists caulking and weather-stripping as routine maintenance. New roof vents are outside work, and the handbook wants equipment such as power ventilators on rear slopes or placed where the street sees as little of it as possible. Check with Town Hall before adding any.
Is a newer Oak Ridge house ever inside the historic district?
It can be, so check the town's map. The district set up in 1994 follows about a mile and three quarters of Oak Ridge Road, from Williard Road to Bastille Lane, plus half a mile of Linville Road. It takes in more than 400 acres, with some 70 buildings and farm tracts from before 1945. The town notes that several of those open tracts have since been built on under the district's design standards, so a newer house there falls under the same exterior rules.
Does attic insulation in Oak Ridge need a permit?
Oak Ridge Town Hall can say whether Guilford County Inspections, the town itself or another office handles permits in Oak Ridge; ask before work starts.
Helpful Guides
- Power from Duke Energy: high summer electric bills and home energy audits
Sources
Census Bureau figures for Oak Ridge, NOAA normals for the Greensboro PTI Airport station, Duke Energy (October 2026). Compiled by Insulation Pros. How the town pages are made.
Sources for the Oak Ridge notes and questions (read October 20, 2026):
- Oak Ridge, in The North Carolina Gazetteer (William S. Powell, 2nd ed., UNC Press 2010), NCpedia
- Oak Ridge History, Town of Oak Ridge
- Historic District, Town of Oak Ridge
- Oak Ridge Historic District Design Standards Handbook (Oak Ridge Historic Preservation Commission, approved 2013, revised 2021)
- Year Structure Built (table B25034), Oak Ridge town, American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau via Census Reporter
- Adding Attic Insulation, ENERGY STAR do-it-yourself guide
- About Attic Ventilation, ENERGY STAR do-it-yourself guide
- Attic Air Sealing Project, ENERGY STAR
- N.C. Gen. Stat. 160D-947, Certificate of appropriateness required
- Oak Ridge Military Academy Historic District, National Register nomination (NC HPO)
Oak Ridge, NC
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Insulation Pros is an insulation contractor serving North Carolina, Oak Ridge and the rest of Guilford County included.
Reach us
Send the square footage of your Oak Ridge attic, or call (336) 870-3893.