High Point, NC
3 miles west
Power from its own town system (Jamestown: Duke Energy); 120,571 people, about 32 times Jamestown's population
Insulation contractor serving High PointAttic Insulation in Jamestown, NC
Blown-in attic insulation for Jamestown, NC, 3 miles from High Point, plus removal and air sealing.
About Jamestown and Its Homes
Jamestown began as a Quaker settlement on the old stage road near the Deep River and was incorporated in 1816. A few of its brick and frame buildings date from the early 1800s, but the larger share of homes here dates from 1970 on, after neighborhoods spread over old farmland.
Jamestown, in Guilford County, grew from 3,688 people in 2020 to 3,803 in 2025 (Census Bureau estimates), on 3 square miles.
Jamestown has about 1,680 housing units, 1 percent of Guilford County's; about 78 percent of the town's households own their home.
Jamestown at a Glance
- County: Guilford County
- Population: 3,803 (2025), 3,688 (2020), up 3.1%
- Land area: 3 square miles (1,268 people each)
- Housing units: about 1,680 (±190)
- Owner-occupied: 78% (±7); Guilford County: 60%
- Detached houses: 60% (±13); Guilford County: 62%
- Attached houses: 15% (±6)
- Apartments: 24% (±14)
- Climate zone: 4 (state code), 3 (2021 map)
- ENERGY STAR target for Jamestown attics: R-49 from bare, R-38 over 3 to 4 inches (R-value guide)
Census Bureau estimates for Jamestown, 2020 to 2024 (± margin of error).
Jamestown Homes and Their Attics
Quaker Brick and Frame Houses on the Old Road
The 1973 nomination describes the district as about a mile of nineteenth-century buildings along the old road from Salisbury to Virginia. At its core are early 1800s buildings of brick laid in Flemish bond, with two-story frame houses of the mid-1800s nearby, their chimneys built against the outside end walls. A chimney on the outside of the wall does not come up through the attic floor, so it leaves no ceiling gap to close. In houses this old the wiring matters more. If any circuits still run on the open knobs and tubes of pre-1930 wiring, ENERGY STAR treats burying them as a fire hazard. An electrician sees to that first.
Neighborhoods Laid Out on Farmland in the 1960s
The town's own history says Jamestown grew quickly in the 1960s, when several neighborhoods were built on what had been farmland. If a boxed-in section of ceiling runs over your upper kitchen cabinets, look at it from the attic side. ENERGY STAR notes that these dropped soffits are often open to the attic, sometimes hidden under the old insulation. The insulation is pushed back, the open top is covered and sealed, and then the insulation goes back over it.
Attic Insulation in Jamestown
About 25 percent of Jamestown's homes predate 1970; if your joists show above the insulation, ENERGY STAR says to add more insulation.
The Local Climate
Jamestown's center sits about 800 feet above sea level, 3 miles from NOAA's High Point station, the best match for Jamestown. The station's 1991 to 2020 normals average about 3,120 heating and 1,710 cooling degree days a year, so at Jamestown's station, heating needs outweigh cooling.
Readings change over short distances around Jamestown: NOAA's Greensboro PTI Airport station, 7 miles away, averages about 3,500 heating degree days.
Homes by Age: What It Means for the Attic
Built from 1940 to 1969, about 20 percent of Jamestown homes often have little insulation. Built from 1970 to 1989, about 25 percent of Jamestown homes may hold settled fiberglass; check its depth against the joists.
About 40 percent of Jamestown's housing units predate 1980; nearly all predate the state's 1978 insulation rule too.
Homes by Year Built
- Before 1940: 5% (±4), about 90 units
- 1940s: under 2%, about 10 units
- 1950s: 9% (±5), about 155 units
- 1960s: 10% (±5), about 165 units
- 1970s: 14% (±9), about 235 units
- 1980s: 13% (±7), about 215 units
- 1990s: 15% (±6), about 260 units
- 2000s: 21% (±13), about 350 units
- 2010s: 11% (±6), about 190 units
- 2020 or later: under 2%, about 10 units
Air Sealing and Duct Sealing in Jamestown
In Jamestown, about 35 percent of homes heat with electricity and about 64 percent with piped gas; forced air from either moves through ducts.
Air sealing comes first, as the EPA advises: wire and pipe holes, wall tops and soffits.
How Homes Here Are Heated
- Electricity: 35% (±11), about 550 households; Guilford County: 54%
- Piped gas: 64% (±8), about 1,020 households
Power, Gas and Rebates
Duke Energy supplies Jamestown's electricity. For gas, Jamestown is in the Guilford County franchise of Piedmont Natural Gas, and about 64 percent of the town's homes heat with piped gas. Duke's free House Call fits many Jamestown homes: about 35 percent heat with electricity.
Rebate to check in Jamestown: Smart $aver Insulate and Seal (Duke Energy; Insulation Pros is an approved trade ally). Before a job in Jamestown, check its current terms; the Guilford County page lists every program.
Attic Insulation Removal in Jamestown
In a Jamestown attic, only wet, moldy or animal-soiled insulation is vacuumed out (ENERGY STAR's test), once the cause is fixed, and after mice that Jamestown attic is sanitized and deodorized; dry, clean insulation stays.
Also Serving Near Jamestown
Nearest to Jamestown first.
Archdale, NC
7 miles south
12,254 people, about 3 times Jamestown's population
Insulation contractor serving ArchdaleGreensboro, NC
9 miles northeast
Its NOAA station logs about 320 more heating degree days than Jamestown's; 308,667 people, about 81 times Jamestown's population
Insulation contractor serving Greensboro
Jamestown Insulation FAQs
Does the Jamestown Historic District set rules for working on my house?
Listing alone sets none. Jamestown's district has been on the National Register since its 1973 listing, and the State Historic Preservation Office explains that Register status leaves owners free to spend private funds as they choose. Guilford County has a joint preservation commission on the state's 2023 roster, but none is named for Jamestown itself. Before any change to the outside, such as new roof vents, check with the town's planning office.
How near the chimney can insulation go in an older Jamestown house?
Not against it. The 1973 nomination records chimneys of several kinds in town, from stacks on the end walls to one rising between the two parts of a log house. Where a chimney sits inside the house and passes up through the attic, ENERGY STAR calls for lightweight aluminum over the gap, sealed with heat-resistant caulk. Then a metal collar keeps insulation about 2 inches from brick, or 1 inch from a metal flue.
Does attic insulation in Jamestown need a permit?
Jamestown Town Hall can say whether Guilford County Inspections, the town itself or another office handles permits in Jamestown; ask before work starts.
Helpful Guides
- Power from Duke Energy: high summer electric bills and home energy audits
Sources
Census Bureau figures for Jamestown, NOAA normals for the High Point station, Duke Energy (October 2026). Compiled by Insulation Pros. How the town pages are made.
Sources for the Jamestown notes and questions (read October 20, 2026):
- Jamestown, in The North Carolina Gazetteer (William S. Powell, 2nd ed., UNC Press 2010), NCpedia
- Jamestown Historic District, National Register nomination (NC HPO)
- History, Town of Jamestown
- Year Structure Built (table B25034), Jamestown town, American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau via Census Reporter
- Attic Insulation Project, ENERGY STAR
- Sealing Air Leaks in the Attic, ENERGY STAR do-it-yourself guide
- 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)
- Town of Jamestown, official website (departments, Planning and Zoning)
- Furnace Flues Require Special Sealing Techniques, ENERGY STAR do-it-yourself guide
Jamestown, NC
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Insulation Pros is an insulation contractor serving North Carolina, Jamestown and the rest of Guilford County included.
Reach us
Send the square footage of your Jamestown attic, or call (336) 870-3893.