Attic Insulation in Bertie County, NC

Bertie County and Its Homes

Bertie County shrank 4 percent from 2020 to 2025, to 17,086 people by the Census Bureau's estimate, in about 9,000 housing units.

Its eight incorporated towns each have a page here: Windsor, Aulander, Lewiston Woodville, Kelford, Colerain, Powellsville, Roxobel and Askewville. About 25 percent of Bertie County's housing units are inside town limits, the rest in unincorporated areas.

A white two-story courthouse with columns and a cupola in Windsor, North Carolina — The Bertie County Courthouse in Windsor, the county seat Photo: Indy beetle, CC0, via Wikimedia Commons

Bertie County at a Glance

Population: 17,086 (2025), 17,722 (2020)
Housing units: about 9,000
Median year built: 1981 (North Carolina: 1991)
Built before 1980: 48% (statewide: 34%)
Detached houses: 66%
Mobile homes: 31%
Owner-occupied: 73%
Heated with electricity: 59% (statewide: 65%)
Climate zone: 3 (2021 map), 4 (state code)
Towns with pages here: 8

Census Bureau estimates for Bertie County (housing: 2020 to 2024).

Towns in Bertie County

Windsor
3,469 people · median home 1971 · its own electric system
Aulander
715 people · Dominion Energy North Carolina
Lewiston Woodville
405 people · Dominion Energy North Carolina
Kelford
204 people · Dominion Energy North Carolina
Colerain
198 people · Dominion Energy North Carolina
Powellsville
180 people · Dominion Energy North Carolina
Roxobel
176 people · Dominion Energy North Carolina
Askewville
171 people · median home 1974 · power varies by address

What We Do in Bertie County

Attic Insulation in Bertie County
Some 48 percent of Bertie County housing units predate 1980; joists showing above their insulation mean more blown-in fiberglass is due, R-49 from bare.
Attic Insulation Removal in Bertie County
Wet, moldy or animal-soiled insulation comes out of Bertie County attics, and a mouse-soiled Bertie County attic is sanitized and deodorized; in the 22 percent of homes built before 1960, vermiculite is ruled out first.
Air Sealing in Bertie County
Some 59 percent of Bertie County homes heat with electricity, often through attic ducts; their joints and the ceiling's gaps are sealed first.

Homes in Bertie County

Half of Bertie County's 9,000 housing units were built before 1981: 31 percent before 1970, 48 percent before 1980 (nearly all before the state's 1978 insulation rule) and 10 percent in 2010 or later. The largest share went up in the 1970s; fiberglass from those years may have settled, so check its depth against the joists.

Bertie County by type: 66 percent detached houses and 31 percent mobile homes (11 percent statewide). In Bertie County, 59 percent of homes heat with electricity, 29 percent with tank gas (6 percent statewide) and 5 percent with oil or kerosene (2 percent statewide).

Bertie County Homes by Year Built

Before 1940: about 610 units, 7% (±2)
1940s: about 500 units, 6% (±2)
1950s: about 840 units, 9% (±2)
1960s: about 800 units, 9% (±3)
1970s: about 1,560 units, 17% (±3)
1980s: about 1,440 units, 16% (±4)
1990s: about 1,230 units, 14% (±3)
2000s: about 1,110 units, 12% (±3)
2010s: about 890 units, 10% (±3)
2020 or later: about 10 units, 0% (±1)

Climate Across Bertie County

NOAA 1991 to 2020 normals for Bertie County towns, by station: Lewiston station (Aulander, Lewiston Woodville, Kelford, Powellsville and 2 more): about 3,140 heating and 1,750 cooling degree days; Williamston 1 E station (Windsor): about 3,030 heating and 1,770 cooling degree days; Edenton station (Colerain): about 2,870 heating and 1,840 cooling degree days.

Power and Gas in Bertie County

The card lists Bertie County's town utilities by the territory maps; a power bill confirms the one at an address.

Piedmont Natural Gas holds the Bertie County gas franchise (NC Utilities Commission map); a franchise does not mean its mains reach every road.

Who Supplies Power in Bertie County

Dominion Energy North Carolina: Aulander, Lewiston Woodville, Kelford, Colerain, Powellsville and Roxobel; parts of Askewville
Roanoke Electric Cooperative: parts of Askewville; homes near Windsor, Aulander, Lewiston Woodville, Kelford and Roxobel
Windsor's own electric system: Windsor

Energy Programs for Bertie County Homes

Check each program's current terms for a Bertie County home; some pay only through the utility's contractor network.

Programs for Bertie County

Home Energy Evaluation (Dominion Energy rebate; Aulander, Lewiston Woodville, Kelford, Colerain and more).
ElectriCities energy audits (ElectriCities member towns; Windsor).
Income and Age Qualifying Home Improvements (Dominion Energy income-qualified; Aulander, Lewiston Woodville, Kelford, Colerain and more).
Energy Saver North Carolina (statewide income-qualified; any Bertie County address).
Weatherization Assistance Program (statewide income-qualified; any Bertie County address).
Piedmont Natural Gas lists rebates for high-efficiency gas furnaces, and none for insulation or air sealing (program page).

Get Your Free Estimate

or call (336) 870-3893

Bertie County Insulation FAQs

Do you serve all of Bertie County?

Yes: Windsor, Aulander, Lewiston Woodville, Kelford, Colerain, Powellsville, Roxobel and Askewville, and every unincorporated Bertie County address.

Which utilities offer insulation rebates in Bertie County?

Dominion Energy's Home Energy Evaluation (Aulander, Lewiston Woodville, Kelford, Colerain and more).

Does attic insulation in Bertie County need a permit?

Ask Bertie County Planning & Inspections before work starts. For an address in Windsor, Aulander, Lewiston Woodville or another Bertie County town, the town or city hall can tell you whether Bertie County's office handles its permits.