Unionville, NC
6 miles northeast
Median home built 1993 (Monroe: 1989); 7,322 people, about a sixth of Monroe's population
Attic insulation in UnionvilleInsulation Contractor Serving Monroe, NC
Blown-in attic insulation for Monroe, NC, in Union County, plus removal and air sealing.
About Monroe and Its Homes
Monroe, the Union County seat, was incorporated in 1844 and named for President James Monroe. Its older neighborhoods, built up mostly between 1870 and 1940, spread east, south and west of downtown, with frame Italianate and Queen Anne houses and brick bungalows.
Monroe, in Union County, grew from 34,699 people in 2020 to 42,644 in 2025 (Census Bureau estimates), on 31.3 square miles. That makes Monroe the second-largest town in Union County.
Monroe has about 13,500 housing units, 15 percent of Union County's; 62 percent of the city's households own their home.
Monroe at a Glance
- County: Union County
- Population: 42,644 (2025), 34,699 (2020), up 22.9%
- Land area: 31.3 square miles (1,361 people each)
- Housing units: about 13,500 (±583)
- Median year built: 1989 (±3); Union County: 2000
- Owner-occupied: 62% (±4); Union County: 82%
- Detached houses: 71% (±2); Union County: 86%
- Attached houses: 5% (±2)
- Apartments: 21% (±4)
- Mobile homes: 3% (±1)
- Climate zone: 3 on both maps
- ENERGY STAR target for Monroe attics: R-49 from bare, R-38 over 3 to 4 inches (R-value guide)
Census Bureau estimates for Monroe, 2020 to 2024 (± margin of error).
Monroe Homes and Their Attics
Victorian and Classical Revival Houses South of Downtown
Monroe grew fast after 1870, and the city's design standards count more than 30 houses built between 1875 and 1890, most of them between Lancaster Avenue and West Franklin Street. The 1987 National Register nomination adds a wave of Classical Revival cottages from the first fifteen years of the twentieth century, with high hipped roofs and several gables. Its inventory describes many houses whose tall brick chimneys, often with corbelled caps, come up through the roof. Such a chimney crosses the attic, and the open ring around it lets house air escape. We close that ring with thin aluminum sheet sealed by high-temperature caulk, then set a sheet-metal collar so the blown insulation stays clear of the masonry.
Craftsman Bungalows of the East Side
The same nomination finds bungalows in large numbers, especially in the east part of the district, built from about 1913 into the 1930s. Many show Craftsman touches such as exposed rafter tails and triangular braces, and in the 1920s and 1930s many were veneered in brick. Some have dormers, and the inventory lists a number of story-and-a-half houses. In a house like that, part of the upstairs is tucked under the rafters, with a low wall on each side and a wedge of attic behind it. ENERGY STAR names those knee wall spaces as common leak points. We treat the wedges as attics of their own: air sealed first, then insulated, as well as the flat ceiling above.
Attic Insulation in Monroe
Some 26 percent of Monroe's homes predate 1970; if your joists show above the insulation, ENERGY STAR says to add more insulation.
From 1990 to 2009, 37 percent of Monroe homes were built to codes below ENERGY STAR's target; check their eaves, where ENERGY STAR says insulation is often thinnest.
The Local Climate
Monroe's center sits about 600 feet above sea level, 2 miles from NOAA's Monroe 2 SE station, the best match for Monroe. The station's 1991 to 2020 normals average about 3,200 heating and 1,740 cooling degree days a year, so at Monroe's station, heating needs outweigh cooling.
Homes by Age: What It Means for the Attic
Some 71 percent of Monroe housing units are detached single-family houses.
Built from 1970 to 1989, 25 percent of Monroe homes may hold settled fiberglass; check its depth against the joists.
About 39 percent of Monroe's housing units predate 1980; nearly all predate the state's 1978 insulation rule too.
Homes by Year Built
- Before 1940: 7% (±2), about 930 units
- 1940s: 3% (±1), about 360 units
- 1950s: 8% (±2), about 1,070 units
- 1960s: 8% (±2), about 1,120 units
- 1970s: 14% (±3), about 1,850 units
- 1980s: 12% (±2), about 1,570 units
- 1990s: 20% (±3), about 2,700 units
- 2000s: 17% (±3), about 2,300 units
- 2010s: 8% (±2), about 1,030 units
- 2020 or later: 4% (±1), about 560 units
Air Sealing and Duct Sealing in Monroe
In Monroe, 51 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: 51% (±4), about 6,400 households; Union County: 45%
- Piped gas: 46% (±3), about 5,900 households
Power, Gas and Rebates
Monroe, an ElectriCities public power town, runs its own electric system. Monroe's natural gas comes from the city's own municipal system, and 46 percent of the city's homes heat with it.
Program to ask about in Monroe: ElectriCities energy audits (the city's electric system), home energy audits for member-town customers; ask the city's utility office. Before a job in Monroe, check its current terms; the Union County page lists every program.
Attic Insulation Removal in Monroe
In a Monroe attic, only wet, moldy or animal-soiled insulation is vacuumed out (ENERGY STAR's test), once the cause is fixed, and after mice that Monroe attic is sanitized and deodorized; dry, clean insulation stays.
Also Serving Near Monroe
Nearest to Monroe first.
Wingate, NC
7 miles east
Median home built 1987 (Monroe: 1989); Power from Duke Energy Carolinas (Monroe: a town system)
Attic insulation in WingateIndian Trail, NC
7 miles northwest
Median home built 2004 (Monroe: 1989)
Attic insulation in Indian TrailLake Park, NC
7 miles northwest
Median home built 1997 (Monroe: 1989); 3,609 people, under a tenth of Monroe's population
Attic insulation in Lake ParkWesley Chapel, NC
7 miles west
9,566 people, about a quarter of Monroe's population
Attic insulation in Wesley Chapel
Monroe Insulation FAQs
My house is in the South Monroe Historic District. Does attic work go before the commission?
Usually not, as long as nothing changes on the outside. The local South Monroe Historic District covers many of the same houses as the National Register district, and its design standards review outside changes. Air sealing and insulating happen indoors. Adding new features to a roof needs the commission's review, though, and so does any outside change that comes from inside work, such as a new roof vent. The city asks owners to call its planning staff before starting, since work begun without approval costs more to apply for afterward.
My old Monroe house was split into apartments. Can the owner have the attic done?
Yes, the choice belongs to whoever owns the building, lived in or rented. The district's nomination notes that a number of the older houses were divided into two or more units, and some large garages became apartments. A divided house can have one shared attic over several units, and a garage apartment can have its own small attic. On install day the crew goes into each one, and the owner hears what they find before work starts.
I found pebbly old insulation in my Monroe attic. Is that a problem?
It may be, so leave it alone until it is tested. The City of Monroe's own historic district resources warn that homes built before the 1980s can hide asbestos in insulation. The EPA says vermiculite, a pebble-like gray-brown or silver-gold fill, may contain asbestos. It should stay undisturbed, nothing should be stored in that attic, and only a trained asbestos contractor should remove it. We do not disturb or cover vermiculite.
Are there rebates for attic insulation in Monroe?
Monroe's municipal electric system lists no insulation rebate for Monroe on the pages we read; it does offer ElectriCities energy audits. Income-eligible Monroe households may qualify for Energy Saver North Carolina; check whether it has opened in Union County. The Union County page lists every other program.
How do I choose an insulation company in Monroe?
Compare written estimates for your Monroe attic listing air sealing, any removal and the added depth.
Does attic insulation in Monroe need a permit?
Monroe City Hall can say whether Union County Development Services, the city itself or another office handles permits in Monroe; ask before work starts.
Helpful Guides
- An energy audit program from the city's own utility: home energy audits
Sources
Census Bureau figures for Monroe, NOAA normals for the Monroe 2 SE station, Monroe's municipal electric system (October 2026). Compiled by Insulation Pros. How the town pages are made.
Sources for the Monroe notes and questions (read October 20, 2026):
- Monroe, in The North Carolina Gazetteer (William S. Powell, 2nd ed., UNC Press 2010), NCpedia
- Monroe Residential Historic District, National Register nomination (NC HPO)
- Monroe Design Standards, South Monroe Historic District (City of Monroe, effective August 10, 2021)
- Furnace Flues Require Special Sealing Techniques, ENERGY STAR do-it-yourself guide
- Attic Air Sealing Project, ENERGY STAR
- Building Construction Problem Areas, weatherization training text, Iowa Department of Health and Human Services
- Historic District, Planning and Development, City of Monroe
- Historic District Resources, Planning and Development, City of Monroe
- N.C. Gen. Stat. 160D-947, Certificate of appropriateness required
- Protect Your Family from Exposures to Asbestos-Contaminated Vermiculite Insulation, US EPA
Monroe, NC
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Insulation Pros is an insulation contractor serving North Carolina, Monroe and the rest of Union County included.
Reach us
Send the square footage of your Monroe attic, or call (336) 870-3893.