Attic Insulation in Hudson, NC
Blown-in attic insulation for Hudson, NC, 2 miles from Sawmills, plus removal and air sealing.
About Hudson and Its Homes
Hudson started around 1880 as a sawmill camp in thick timber, and the railroad reached it in 1884. Its cotton mill opened in 1904, and when the town was chartered in 1905 its limits were measured out from the depot, so the town grew up centered on the railroad.
Hudson, in Caldwell County, grew from 3,782 people in 2020 to 3,786 in 2025 (Census Bureau estimates), on 3.66 square miles. That makes Hudson the fourth-largest town in Caldwell County.
Hudson has about 1,700 housing units, 5 percent of Caldwell County's; 81 percent of the town's households own their home.
Hudson at a Glance
- County: Caldwell County
- Population: 3,786 (2025), 3,782 (2020), up 0.1%
- Land area: 3.66 square miles (1,034 people each)
- Housing units: about 1,700 (±218)
- Median year built: 1978 (±3); Caldwell County: 1980
- Owner-occupied: 81% (±6); Caldwell County: 74%
- Detached houses: 82% (±5); Caldwell County: 73%
- Apartments: 18% (±10)
- Climate zone: 4 on both maps
- ENERGY STAR target for Hudson attics: R-60 from bare, R-49 over 3 to 4 inches (R-value guide)
Census Bureau estimates for Hudson, 2020 to 2024 (± margin of error).
Hudson Homes and Their Attics
The Company Houses Behind the Hudson Mill
While the 1904 mill was going up, workmen built twenty frame houses on a road behind it, from three to six rooms each. A second mill of 1923 across the tracks added a row of its own. The mill's National Register nomination records that both groups of workers' houses were pulled down, around 1970 and probably in the 1970s. So the company housing is gone, and the Census figures on this page put fewer than half of the town's homes before 1970. North Carolina's insulation standards bound only houses started from New Year's Day 1978 on. A Hudson house framed in the early or middle 1970s fell outside that rule, so its attic holds whatever its builder chose and later owners added.
Attic Insulation in Hudson
About 30 percent of Hudson's homes predate 1970; if your joists show above the insulation, ENERGY STAR says to add more insulation.
Built from 1970 to 1989, about 35 percent of Hudson homes may hold settled fiberglass; check its depth against the joists.
The Local Climate
Hudson's center sits about 1,260 feet above sea level, 5 miles from NOAA's Lenoir station, the best match for Hudson. The station's 1991 to 2020 normals average about 3,850 heating and 1,290 cooling degree days a year, so at Hudson's station, heating needs outweigh cooling.
Readings change over short distances around Hudson: NOAA's Hickory Airport station, 10 miles away, averages about 3,550 heating degree days.
Homes by Age: What It Means for the Attic
Some 82 percent of Hudson housing units are detached single-family houses.
From 1990 to 2009, about 30 percent of Hudson homes were built to codes below ENERGY STAR's target; check their eaves, where ENERGY STAR says insulation is often thinnest.
About 55 percent of Hudson's housing units predate 1980; nearly all predate the state's 1978 insulation rule too.
Homes by Year Built
- Before 1940: 3% (±3), about 55 units
- 1940s: 5% (±4), about 90 units
- 1950s: 10% (±5), about 170 units
- 1960s: 12% (±5), about 200 units
- 1970s: 26% (±9), about 430 units
- 1980s: 7% (±5), about 120 units
- 1990s: 17% (±9), about 280 units
- 2000s: 13% (±6), about 230 units
- 2010s: 5% (±4), about 85 units
- 2020 or later: 2% (±2), about 35 units
Air Sealing and Duct Sealing in Hudson
In Hudson, about 78 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: 78% (±8), about 1,200 households; Caldwell County: 70%
- Piped gas: 16% (±8), about 245 households
- Oil or kerosene: 3% (±3), about 50 households
- Wood: under 3%, about 15 households
Power, Gas and Rebates
Duke Energy Carolinas serves most of Hudson, Blue Ridge Energy its edges; your bill says which. For gas, Hudson is in the Caldwell County franchise of Piedmont Natural Gas, and about 16 percent of the town's homes heat with piped gas. Duke's free House Call fits many Hudson homes: about 78 percent heat with electricity.
Rebate to check in Hudson: Smart $aver Insulate and Seal (Duke Energy; Insulation Pros is an approved trade ally). Before a job in Hudson, check its current terms; the Caldwell County page lists every program.
Attic Insulation Removal in Hudson
In a Hudson attic, only wet, moldy or animal-soiled insulation is vacuumed out (ENERGY STAR's test), once the cause is fixed, and after mice that Hudson attic is sanitized and deodorized; dry, clean insulation stays.
Also Serving Near Hudson
Nearest to Hudson first.
Cajah's Mountain, NC
3 miles west
Median home built 1976 (Hudson: 1978)
Attic insulation in Cajah's MountainLenoir, NC
5 miles northwest
Median home built 1972 (Hudson: 1978); 18,372 people, about 5 times Hudson's population
Attic insulation in LenoirGranite Falls, NC
5 miles southeast
Median home built 1991 (Hudson: 1978); Power from its own town system (Hudson: Duke Energy Carolinas)
Attic insulation in Granite Falls
Hudson Insulation FAQs
Besides the old mill, is anything in Hudson on the National Register?
No. The state's list has a single entry here, the Hudson Cotton Manufacturing Company, listed in 2013 for the mill buildings and their grounds. No house or district in town is listed. The state preservation office's 2023 list of local historic commissions has nothing for Caldwell County either. So no historic rule touches attic work in a house here, though an older one still gets its own checks.
Our Hudson house is an older one close to the tracks. What needs a look first?
The wiring and the roof. The town was chartered in 1905, and a house from those first years could have been wired with knob-and-tube, which ENERGY STAR says must not be buried in insulation. An electrician decides on those. Damp or stained insulation points to a roof leak, and the roof gets repaired before anything new goes in.
Could the old insulation in a Hudson attic be vermiculite?
It could: about 20 percent of Hudson's homes predate 1960. If a Hudson attic holds a pebble-like gray-brown or silver-gold fill, leave it undisturbed: the EPA says vermiculite may contain asbestos.
Does attic insulation in Hudson need a permit?
Hudson Town Hall can say whether Caldwell County Building Permits & Inspections, the town itself or another office handles permits in Hudson; ask before work starts.
Helpful Guides
- Climate zone 4: attic stairs and hatches
- Power from Duke Energy Carolinas: high summer electric bills and home energy audits
Sources
Census Bureau figures for Hudson, NOAA normals for the Lenoir station, Duke Energy Carolinas (October 2026). Compiled by Insulation Pros. How the town pages are made.
Sources for the Hudson notes and questions (read October 20, 2026):
- Hudson Cotton Manufacturing Company, National Register nomination (NC HPO)
- Historical and Architectural Development of Caldwell County (Caldwell County survey report, 1987), NC State Historic Preservation Office
- Year Structure Built (table B25034), Hudson town, American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau via Census Reporter
- N.C. Gen. Stat. 143-139.2, Enforcement of insulation requirements; certificate for occupancy
- NC Listings in 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)
- Attic Insulation Project, ENERGY STAR
Hudson, NC
Open in Google Maps (opens in a new tab)Serving Hudson, NC
Insulation Pros is an insulation contractor serving North Carolina, Hudson and the rest of Caldwell County included.
Reach us
Send the square footage of your Hudson attic, or call (336) 870-3893.