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Knightdale, NC
9 miles northeast
Median home built 2008 (Garner: 2001); Its NOAA station logs about 240 fewer heating degree days than Garner's
Attic insulation in KnightdaleAttic Insulation in Garner, NC
Blown-in attic insulation for Garner, NC, in Wake County, plus removal and air sealing.
About Garner and Its Homes
Garner grew in a thin line along the North Carolina Railroad, chartered as Garner's Station in 1883 and again as Garner in 1905. Once US 70 moved to a bypass in the early 1950s, the land around that line filled with commuter neighborhoods for Raleigh.
Garner, in Wake County, grew from 31,491 people in 2020 to 41,562 in 2025 (Census Bureau estimates), on 19.2 square miles.
Garner has about 15,000 housing units, 3 percent of Wake County's; 63 percent of the town's households own their home.
Garner at a Glance
- County: Wake County
- Population: 41,562 (2025), 31,491 (2020), up 32.0%
- Land area: 19.2 square miles (2,169 people each)
- Housing units: about 15,000 (±664)
- Median year built: 2001 (±3); Wake County: 2000
- Owner-occupied: 63% (±4); Wake County: 64%
- Detached houses: 65% (±3); Wake County: 58%
- Attached houses: 5% (±2)
- Apartments: 28% (±5)
- Mobile homes: 2% (±1)
- Climate zone: 4 (state code), 3 (2021 map)
- ENERGY STAR target for Garner attics: R-49 from bare, R-38 over 3 to 4 inches (R-value guide)
Census Bureau estimates for Garner, 2020 to 2024 (± margin of error).
Garner Homes and Their Attics
Railroad Cottages Along Garner Road and Main Street
The Downtown Garner Historic District, listed in 1989, follows the tracks for about ten blocks. Its nomination calls the houses mostly modest, dating from the turn of the century to after World War II. Most of the earlier ones are one-story frame cottages in triple-A, T-plan or L-plan form, in Late Queen Anne or Classical Revival dress, with bungalows added in the 1920s and 1930s. Electricity only reached Garner in 1921, the town's history says. So a cottage from before then got its wiring after it was built, and that wiring may be knob-and-tube. In ENERGY STAR's guidance, old knob-and-tube buried under insulation is a fire hazard. An electrician looks it over first, and any live run stays clear of insulation until it is replaced.
Ranch Neighborhoods Around the 1950s Bypass
In the early 1950s US 70 was widened and moved to a four-lane bypass around downtown. Shopping centers such as Forest Hills and Garner Plaza followed, and new subdivisions spread around and north of the new road. The 1989 district nomination already describes mostly post-World War II housing to the north and northwest of downtown. A Wake County survey describes the county's Ranch houses of the 1950s and early 1960s as low-pitched, a typical late-1950s one under a low hip roof with wide eaves. Because a hipped roof comes down to the eaves on every side, the cramped outer edge of the attic circles the entire house. Per ENERGY STAR, the middle can have enough while that perimeter has very little. We carry insulation out to every wall and set baffles to keep the soffit vents breathing.
Attic Insulation in Garner
Some 16 percent of Garner's homes predate 1970; if your joists show above the insulation, ENERGY STAR says to add more insulation.
From 1990 to 2009, 34 percent of Garner homes were built to codes below ENERGY STAR's target; check their eaves, where ENERGY STAR says insulation is often thinnest.
The Local Climate
Garner's center sits about 360 feet above sea level, 4 miles from NOAA's Garner station, the best match for Garner. The station's 1991 to 2020 normals average about 3,640 heating and 1,340 cooling degree days a year, so at Garner's station, heating needs outweigh cooling.
Readings change over short distances around Garner: NOAA's Raleigh 4 SW station, 4 miles away, averages about 2,920 heating degree days.
Homes by Age: What It Means for the Attic
Some 65 percent of Garner housing units are detached single-family houses.
In 2010 or later, 29 percent of Garner homes went up; check their air sealing as well as the depth.
About 28 percent of Garner's housing units predate 1980; nearly all predate the state's 1978 insulation rule too. Some 28 percent of Garner units sit in buildings of two or more homes, where the attic is often shared.
Homes by Year Built
- Before 1940: 2% (±1), about 340 units
- 1940s: 1% (±1), about 215 units
- 1950s: 6% (±2), about 970 units
- 1960s: 6% (±2), about 930 units
- 1970s: 12% (±2), about 1,820 units
- 1980s: 9% (±2), about 1,360 units
- 1990s: 11% (±2), about 1,600 units
- 2000s: 23% (±3), about 3,400 units
- 2010s: 22% (±4), about 3,300 units
- 2020 or later: 7% (±2), about 1,050 units
Air Sealing and Duct Sealing in Garner
In Garner, 60 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: 60% (±3), about 8,400 households; Wake County: 55%
- Piped gas: 36% (±4), about 5,000 households
- Bottled or tank gas: 3% (±1), about 420 households
Power, Gas and Rebates
Duke Energy supplies Garner's electricity. For gas, Garner is in the Wake County franchise of Enbridge Gas North Carolina, and 36 percent of the town's homes heat with piped gas. Duke's free House Call fits many Garner homes: 60 percent heat with electricity.
Rebate to check in Garner: Smart $aver Insulate and Seal (Duke Energy; Insulation Pros is an approved trade ally). Before a job in Garner, check its current terms; the Wake County page lists every program.
Attic Insulation Removal in Garner
In a Garner attic, only wet, moldy or animal-soiled insulation is vacuumed out (ENERGY STAR's test), once the cause is fixed, and after mice that Garner attic is sanitized and deodorized; dry, clean insulation stays.
Also Serving Near Garner
Nearest to Garner first.
Raleigh, NC
10 miles north
Median home built 1997 (Garner: 2001); Its NOAA station logs about 470 fewer heating degree days than Garner's
Insulation contractor serving RaleighClayton, NC
10 miles east
Median home built 2006 (Garner: 2001); Power from its own town system (Garner: Duke Energy)
Attic insulation in ClaytonFuquay-Varina, NC
11 miles southwest
Median home built 2011 (Garner: 2001); Its NOAA station logs about 210 fewer heating degree days than Garner's
Attic insulation in Fuquay-VarinaHolly Springs, NC
13 miles west
Its NOAA station logs about 280 fewer heating degree days than Garner's
Attic insulation in Holly Springs
Garner Insulation FAQs
Is my Garner house bound by rules because of the downtown historic district?
No. The downtown district went on the National Register in 1989. A Register listing by itself sets no conditions on Garner homeowners who repair or remodel at their own cost, per the state preservation office. Rules on outside changes come only with a designated local landmark or local district, where a certificate of appropriateness is needed. Insulating an attic and sealing its leaks happen indoors, so they fall outside even those rules.
Would a radiant barrier help the attic insulation in my Garner ranch?
That turns on what your attic holds now. Building America's guide says a radiant barrier is most useful where the attic gains a lot of heat and the ductwork runs through it. It also helps most where there is little insulation on the attic floor. Over a thick, even layer of insulation it adds very little. So the insulation comes first, and that is where we start.
Did anyone require insulation in Garner houses put up before 1978?
No. North Carolina's rule tying occupancy of a new house to its insulation standards starts with houses begun in 1978. The first subdivisions around the 1950s bypass were standing long before then, so what is above those ceilings depends on the builder and on what owners added since. On install day the crew measures in several places, out at the eaves too, and shows you the numbers before work starts.
Are there rebates for attic insulation in Garner?
Duke Energy's Smart $aver Insulate and Seal is the one to check: a rebate for attic insulation done together with air sealing, and a separate one for duct sealing, when the attic starts at R-19 or less; a contractor in Duke's Smart $aver network must do the work, and Insulation Pros is an approved Duke Energy trade ally. Check its current terms. The Wake County page lists every other program.
Does attic insulation in Garner need a permit?
Garner Town Hall can say whether Wake County Permits and Inspections, the town itself or another office handles permits in Garner; ask before work starts.
Helpful Guides
- Median home built 2001: a hot upstairs and bonus rooms over garages
- Power from Duke Energy: high summer electric bills and home energy audits
Sources
Census Bureau figures for Garner, NOAA normals for the Garner station, Duke Energy (October 2026). Compiled by Insulation Pros. How the town pages are made.
Sources for the Garner notes and questions (read October 20, 2026):
- Downtown Garner Historic District, National Register nomination (NC HPO, listed 1989)
- A Brief Town History, Town of Garner
- Garner, in The North Carolina Gazetteer (William S. Powell, 2nd ed., UNC Press 2010), NCpedia
- Attic Insulation Project, ENERGY STAR
- Wake County Survey Update, Phases I and II, 2007 (Wake County Reconnaissance Survey Update 2005-2006, Edwards-Pitman Environmental, for the NC HPO)
- Adding Attic Insulation, ENERGY STAR do-it-yourself guide
- About Attic Ventilation, ENERGY STAR do-it-yourself guide
- What Is the National Register of Historic Places?, NC State Historic Preservation Office
- N.C. Gen. Stat. 160D-947, Certificate of appropriateness required
- Attic Radiant Barriers, Building America Solution Center (Pacific Northwest National Laboratory, U.S. DOE)
- N.C. Gen. Stat. 143-139.2, Enforcement of insulation requirements; certificate for occupancy
Garner, NC
Open in Google Maps (opens in a new tab)Serving Garner, NC
Insulation Pros is an insulation contractor serving North Carolina, Garner and the rest of Wake County included.
Reach us
Send the square footage of your Garner attic, or call (336) 870-3893.