Attic Insulation in Iredell County, NC

Iredell County and Its Homes

Iredell County grew 13 percent from 2020 to 2025, to 211,798 people by the Census Bureau's estimate, in about 84,200 housing units.

Its five incorporated towns each have a page here: Mooresville, Statesville, Troutman, Harmony and Love Valley. About 45 percent of Iredell County's housing units are inside town limits, the rest in unincorporated areas.

Red brick Romanesque-style city hall building at a street corner in Statesville — Statesville City Hall in Statesville, North Carolina Photo: P. Hughes, CC BY 4.0, via Wikimedia Commons; cropped and resized

Iredell County at a Glance

Population: 211,798 (2025), 187,676 (2020)
Housing units: about 84,200
Median year built: 1997 (North Carolina: 1991)
Built before 1980: 27% (statewide: 34%)
Detached houses: 71%
Mobile homes: 12%
Owner-occupied: 72%
Heated with electricity: 63% (statewide: 65%)
Climate zone: 3 (2021 map), 4 (state code)
Towns with pages here: 5

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

Towns and Communities in Iredell County

Mooresville
55,842 people · median home 2006 · Duke Energy Carolinas
Statesville
32,181 people · median home 1982 · its own electric system
Troutman
4,336 people · median home 2007 · Duke Energy Carolinas
Harmony
619 people · Duke Energy Carolinas
Love Valley
183 people · power varies by address
Davidson
Mecklenburg County town · about 420 residents in Iredell County

Unincorporated communities the Census Bureau maps in Iredell County: Lake Norman of Iredell (about 5,300 housing units, median year built 2002) and Stony Point.

What We Do in Iredell County

Attic Insulation in Iredell County
Some 27 percent of Iredell 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 Iredell County
Wet, moldy or animal-soiled insulation comes out of Iredell County attics, and a mouse-soiled Iredell County attic is sanitized and deodorized; in the 12 percent of homes built before 1960, vermiculite is ruled out first.
Air Sealing in Iredell County
Some 63 percent of Iredell County homes heat with electricity, often through attic ducts; their joints and the ceiling's gaps are sealed first.

Homes in Iredell County

Half of Iredell County's 84,200 housing units were built before 1997: 18 percent before 1970, 27 percent before 1980 (nearly all before the state's 1978 insulation rule) and 20 percent in 2010 or later. The largest share went up in the 2000s, under codes that asked for less than ENERGY STAR now suggests; ENERGY STAR notes insulation is often thinnest at the eaves. Among Iredell County towns, the median home is oldest in Statesville (1982) and newest in Troutman (2007).

Iredell County by type: 71 percent detached houses, 13 percent in buildings of two or more homes and 12 percent mobile homes. In Iredell County, 63 percent of homes heat with electricity, 29 percent with piped gas and 4 percent with tank gas.

Iredell County Homes by Year Built

Before 1940: about 4,070 units, 5% (±1)
1940s: about 1,940 units, 2% (±1)
1950s: about 3,930 units, 5% (±1)
1960s: about 5,580 units, 7% (±1)
1970s: about 7,100 units, 8% (±1)
1980s: about 9,230 units, 11% (±1)
1990s: about 15,730 units, 19% (±1)
2000s: about 19,660 units, 23% (±1)
2010s: about 13,470 units, 16% (±1)
2020 or later: about 3,480 units, 4% (±1)

Climate Across Iredell County

NOAA 1991 to 2020 normals for Iredell County towns, by station: Statesville 2 NNE station (Mooresville, Statesville, Troutman and Harmony): about 3,990 heating and 1,260 cooling degree days; North Wilkesboro station (Love Valley): about 4,000 heating and 1,200 cooling degree days.

Power and Gas in Iredell County

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

Enbridge Gas North Carolina holds the Iredell County gas franchise (NC Utilities Commission map), and 29 percent of Iredell County homes heat with piped gas.

Who Supplies Power in Iredell County

Duke Energy Carolinas: Mooresville, Troutman and Harmony; parts of Love Valley; homes near Statesville
EnergyUnited: parts of Love Valley; homes near Mooresville, Statesville, Troutman and Harmony
Statesville's own electric system: Statesville

Energy Programs for Iredell County Homes

Check each program's current terms for an Iredell County home; some pay only through the utility's contractor network. Insulation Pros is an approved Duke Energy trade ally for Duke's rebate.

Programs for Iredell County

Smart $aver Insulate and Seal (Duke Energy rebate; Mooresville, Troutman, Harmony, Love Valley and more).
Home Energy House Call (Duke Energy home assessment; Mooresville, Troutman, Harmony, Love Valley and more).
ElectriCities energy audits (ElectriCities member towns; Statesville).
Income-qualified Weatherization (Duke Energy income-qualified; Mooresville, Troutman, Harmony, Love Valley and more).
ThermWise Weatherization Assistance (Enbridge Gas; Iredell County gas customers): no-cost weatherization for gas customers, income-qualified.
Energy Saver North Carolina (statewide income-qualified; any Iredell County address).
Weatherization Assistance Program (statewide income-qualified; any Iredell County address).

Get Your Free Estimate

or call (336) 870-3893

Iredell County Insulation FAQs

Do you serve all of Iredell County?

Yes: Mooresville, Statesville, Troutman, Harmony and Love Valley, the parts of Davidson inside Iredell County, and every unincorporated Iredell County address.

Which utilities offer insulation rebates in Iredell County?

Duke Energy's Smart $aver Insulate and Seal (Mooresville, Troutman, Harmony, Love Valley and more).

Does attic insulation in Iredell County need a permit?

Ask Iredell County Building Standards Division before work starts. For an address in Mooresville, Statesville, Troutman or another Iredell County town, the town or city hall can tell you whether Iredell County's office handles its permits.