Attic Insulation in Unionville, NC
Blown-in attic insulation for Unionville, NC, in Union County, plus removal and air sealing.
About Unionville and Its Homes
Unionville, at the head of Chinkapin Creek in northern Union County, was first incorporated in 1911 and again in 1998. Its own history centers on farms, two churches and the Union Institute school of 1885, while its older houses have gone largely unrecorded.
Unionville, in Union County, grew from 6,667 people in 2020 to 7,322 in 2025 (Census Bureau estimates), on 29.3 square miles.
Unionville has about 2,600 housing units, 3 percent of Union County's; 87 percent of the town's households own their home.
Unionville at a Glance
- County: Union County
- Population: 7,322 (2025), 6,667 (2020), up 9.8%
- Land area: 29.3 square miles (250 people each)
- Housing units: about 2,600 (±261)
- Median year built: 1993 (±3); Union County: 2000
- Owner-occupied: 87% (±4); Union County: 82%
- Detached houses: 88% (±4); Union County: 86%
- Apartments: under 3%
- Mobile homes: 10% (±4)
- Climate zone: 3 on both maps
- ENERGY STAR target for Unionville attics: R-49 from bare, R-38 over 3 to 4 inches (R-value guide)
Census Bureau estimates for Unionville, 2020 to 2024 (± margin of error).
Attic Insulation in Unionville
Some 16 percent of Unionville's homes predate 1970; if your joists show above the insulation, ENERGY STAR says to add more insulation.
From 1990 to 2009, about 45 percent of Unionville homes were built to codes below ENERGY STAR's target; check their eaves, where ENERGY STAR says insulation is often thinnest.
The Local Climate
Unionville's center sits about 590 feet above sea level, 8 miles from NOAA's Monroe 2 SE station, the best match for Unionville. The station's 1991 to 2020 normals average about 3,200 heating and 1,740 cooling degree days a year, so at Unionville's station, heating needs outweigh cooling.
Homes by Age: What It Means for the Attic
Some 88 percent of Unionville housing units are detached single-family houses, 10 percent mobile homes.
Built from 1970 to 1989, 27 percent of Unionville homes may hold settled fiberglass; check its depth against the joists.
About 25 percent of Unionville's housing units predate 1980; nearly all predate the state's 1978 insulation rule too.
Homes by Year Built
- Before 1940: 1% (±1), about 25 units
- 1940s: 4% (±3), about 95 units
- 1950s: 5% (±3), about 120 units
- 1960s: 7% (±3), about 170 units
- 1970s: 10% (±4), about 250 units
- 1980s: 18% (±5), about 460 units
- 1990s: 23% (±6), about 610 units
- 2000s: 20% (±6), about 510 units
- 2010s: 11% (±4), about 295 units
- 2020 or later: 3% (±2), about 70 units
Air Sealing and Duct Sealing in Unionville
In Unionville, about 64 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: 64% (±8), about 1,600 households; Union County: 45%
- Piped gas: 30% (±4), about 750 households
- Bottled or tank gas: 5% (±3), about 125 households
Power, Gas and Rebates
Power in and around Unionville comes from Duke Energy Carolinas and Union Power Cooperative; your bill says which. For gas, Unionville is in the Union County franchise of Piedmont Natural Gas, and 30 percent of the town's homes heat with piped gas. Duke's free House Call fits many Unionville homes: about 64 percent heat with electricity.
Rebate to check if Duke Energy Carolinas serves your Unionville home: Smart $aver Insulate and Seal (Duke Energy; Insulation Pros is an approved trade ally). Before a job in Unionville, check its current terms; the Union County page lists every program.
Attic Insulation Removal in Unionville
In a Unionville attic, only wet, moldy or animal-soiled insulation is vacuumed out (ENERGY STAR's test), once the cause is fixed, and after mice that Unionville attic is sanitized and deodorized; dry, clean insulation stays.
Also Serving Near Unionville
Nearest to Unionville first.
Monroe, NC
6 miles southwest
Median home built 1989 (Unionville: 1993); 42,644 people, about 6 times Unionville's population
Insulation contractor serving MonroeHemby Bridge, NC
6 miles west
Median home built 1975 (Unionville: 1993); 1,764 people, about a quarter of Unionville's population
Attic insulation in Hemby BridgeLake Park, NC
7 miles west
Median home built 1997 (Unionville: 1993); 3,609 people, about half of Unionville's population
Attic insulation in Lake Park
Unionville Insulation FAQs
Could my Unionville farmhouse be on a historic register?
No, unless something changes. This town has no National Register property on the state list. The 2023 state directory of preservation commissions has three for Union County, serving Monroe, Waxhaw and the county as a whole, and no separate board here. So no designation decides what happens in your attic. The age and soundness of your own house set the plan.
What needs fixing before new insulation goes into an old farmhouse here?
Anything that brings water or steam into the attic. A ceiling stain or soggy insulation usually traces back to the roof, and ENERGY STAR has that leak repaired before new insulation goes down. Next come the exhaust fans. Kitchen, bathroom and dryer ducts have to end outdoors, not open into the attic, where their moist air would soak the new layer. An old farmhouse may also have gained additions over the years, so each roof section gets checked.
Does attic insulation in Unionville need a permit?
Unionville Town Hall can say whether Union County Development Services, the town itself or another office handles permits in Unionville; ask before work starts.
Sources
Census Bureau figures for Unionville, NOAA normals for the Monroe 2 SE station (October 2026). Compiled by Insulation Pros. How the town pages are made.
Sources for the Unionville introduction and questions (read October 20, 2026):
- Unionville, in The North Carolina Gazetteer (William S. Powell, 2nd ed., UNC Press 2010), NCpedia
- History, Town of Unionville
- 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
Unionville, NC
Open in Google Maps (opens in a new tab)Serving Unionville, NC
Insulation Pros is an insulation contractor serving North Carolina, Unionville and the rest of Union County included.
Reach us
Send the square footage of your Unionville attic, or call (336) 870-3893.