Valdese, NC
2 miles east
Power from Duke Energy Carolinas (Drexel: a town system); 4,712 people, about 3 times Drexel's population
Attic insulation in ValdeseAttic Insulation in Drexel, NC
Blown-in attic insulation for Drexel, NC, 2 miles from Valdese, plus removal and air sealing.
About Drexel and Its Homes
Drexel, first called Baker and named for the Drexel family of Philadelphia, gave its name to the furniture company founded there in 1903 and was incorporated in 1913. Little has been written about the town's houses themselves, so each attic here is judged by the house it sits on.
Drexel, in Burke County, grew from 1,746 people in 2020 to 1,764 in 2025 (Census Bureau estimates), on 1.38 square miles. That makes Drexel the third-largest town in Burke County.
Drexel has about 940 housing units, 2 percent of Burke County's; 72 percent of the town's households own their home.
Drexel at a Glance
- County: Burke County
- Population: 1,764 (2025), 1,746 (2020), up 1.0%
- Land area: 1.38 square miles (1,278 people each)
- Housing units: about 940 (±193)
- Owner-occupied: 72% (±1); Burke County: 75%
- Detached houses: 71% (±7); Burke County: 71%
- Apartments: 21% (±9)
- Mobile homes: 7% (±6)
- Climate zone: 4 on both maps
- ENERGY STAR target for Drexel attics: R-60 from bare, R-49 over 3 to 4 inches (R-value guide)
Census Bureau estimates for Drexel, 2020 to 2024 (± margin of error).
Attic Insulation in Drexel
About 45 percent of Drexel's homes predate 1970; if your joists show above the insulation, ENERGY STAR says to add more insulation.
Built from 1940 to 1969, about 35 percent of Drexel homes often have little insulation.
The Local Climate
Drexel's center sits about 1,190 feet above sea level, 4 miles from NOAA's Morganton station, the best match for Drexel. The station's 1991 to 2020 normals average about 3,800 heating and 1,250 cooling degree days a year, so at Drexel's station, heating needs outweigh cooling.
Homes by Age: What It Means for the Attic
About 71 percent of Drexel housing units are detached single-family houses.
Built from 1970 to 1989, about 30 percent of Drexel homes may hold settled fiberglass; check its depth against the joists.
About 60 percent of Drexel's housing units predate 1980; nearly all predate the state's 1978 insulation rule too.
Homes by Year Built
- Before 1940: 10% (±6), about 95 units
- 1940s: 7% (±4), about 70 units
- 1950s: 16% (±8), about 150 units
- 1960s: 11% (±5), about 100 units
- 1970s: 13% (±7), about 125 units
- 1980s: 17% (±8), about 160 units
- 1990s: 20% (±8), about 185 units
- 2000s: 5% (±4), about 45 units
- 2010s: under 1%
- 2020 or later: under 2%
Air Sealing and Duct Sealing in Drexel
In Drexel, about 75 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: 75% (±8), about 650 households; Burke County: 71%
- Piped gas: 17% (±8), about 145 households
- Bottled or tank gas: 3% (±3), about 25 households
- Oil or kerosene: 3% (±3), about 30 households
Power, Gas and Rebates
Drexel, an ElectriCities public power town, runs its own electric system. For gas, Drexel is in the Burke County franchise of Piedmont Natural Gas, and about 17 percent of the town's homes heat with piped gas.
Program to ask about in Drexel: ElectriCities energy audits (the town's electric system), home energy audits for member-town customers; ask the town's utility office. Before a job in Drexel, check its current terms; the Burke County page lists every program.
Attic Insulation Removal in Drexel
In a Drexel attic, only wet, moldy or animal-soiled insulation is vacuumed out (ENERGY STAR's test), once the cause is fixed, and after mice that Drexel attic is sanitized and deodorized; dry, clean insulation stays.
Also Serving Near Drexel
Nearest to Drexel first.
Rutherford College, NC
5 miles east
Its NOAA station logs about 250 fewer heating degree days than Drexel's
Attic insulation in Rutherford CollegeMorganton, NC
5 miles west
Power from its own town system (Drexel: a town system); 17,849 people, about 10 times Drexel's population
Insulation contractor serving MorgantonGamewell, NC
7 miles north
3,713 people, about twice Drexel's population
Attic insulation in Gamewell
Drexel Insulation FAQs
Is any part of Drexel listed as historic?
Not in the state's records. The preservation office keeps the National Register list, and it shows no entry in this town. Its 2023 roster of preservation commissions names only Morganton's for Burke County. Insulating an attic here is your own decision, with no historic board involved. The state preservation office lists no architectural survey of the town's houses either.
We found dark streaks in the old insulation in our Drexel attic. What do they mean?
They mark air leaking up from below. About half the homes in town date from before 1970, going by the housing figures on this page, so an attic here may hold insulation that has sat there for decades. ENERGY STAR explains that darkened insulation has been filtering dusty house air, and that it is still fine to use. So the fix is to seal the gap underneath, around a light, pipe or wire, and then cover it again.
Could the old insulation in a Drexel attic be vermiculite?
It could: about 35 percent of Drexel's homes predate 1960. If a Drexel 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 Drexel need a permit?
Drexel Town Hall can say whether Burke County Building Inspections, the town itself or another office handles permits in Drexel; ask before work starts.
Helpful Guides
- Climate zone 4: attic stairs and hatches
- An energy audit program from the town's own utility: home energy audits
Sources
Census Bureau figures for Drexel, NOAA normals for the Morganton station, Drexel's municipal electric system (October 2026). Compiled by Insulation Pros. How the town pages are made.
Sources for the Drexel introduction and questions (read October 20, 2026):
- Drexel, in The North Carolina Gazetteer (William S. Powell, 2nd ed., UNC Press 2010), NCpedia
- Drexel and the Furniture Maker That Took Its Name, This Day in North Carolina History, NC Department of Natural and Cultural Resources
- 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)
- Year Structure Built (table B25034), Drexel town, American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau via Census Reporter
- Attic Air Sealing Project, ENERGY STAR
- Architectural Survey Status, Records and Reports, NC State Historic Preservation Office
Drexel, NC
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Insulation Pros is an insulation contractor serving North Carolina, Drexel and the rest of Burke County included.
Reach us
Send the square footage of your Drexel attic, or call (336) 870-3893.