Attic Insulation in Ranlo, NC
Blown-in attic insulation for Ranlo, NC, in Gaston County, plus removal and air sealing.
About Ranlo and Its Homes
Ranlo takes its name from two textile men, John Calvin Rankin and William Thomas Love, and grew up around cotton mills opened between 1915 and 1921 east of Gastonia. Residents incorporated it as a town in 1963, and from 1989 on new subdivisions spread around the old mill streets.
Ranlo, in Gaston County, grew from 4,518 people in 2020 to 4,848 in 2025 (Census Bureau estimates), on 2.06 square miles.
Ranlo has about 1,730 housing units, 2 percent of Gaston County's; 62 percent of the town's households own their home.
Ranlo at a Glance
- County: Gaston County
- Population: 4,848 (2025), 4,518 (2020), up 7.3%
- Land area: 2.06 square miles (2,353 people each)
- Housing units: about 1,730 (±168)
- Owner-occupied: 62% (±5); Gaston County: 67%
- Detached houses: 88% (±7); Gaston County: 73%
- Apartments: 10% (±8)
- Mobile homes: under 5%
- Climate zone: 3 on both maps
- ENERGY STAR target for Ranlo attics: R-49 from bare, R-38 over 3 to 4 inches (R-value guide)
Census Bureau estimates for Ranlo, 2020 to 2024 (± margin of error).
Ranlo Homes and Their Attics
Mill Row Houses That Passed to Their Owners
The Rex, Ranlo and Priscilla mills opened in 1915, 1916 and 1921, and the Smyre mill of 1917 had a community of its own nearby. The town's history page says the companies built rows of houses for their workers and rented them out, and that over the years the houses passed into private hands. It adds that rows of them remain in parts of town. A house that has had many owners can hold insulation of several kinds and depths. Dark, dirty patches in it show where air has been leaking up from the rooms below. We seal the leak, and the old insulation can usually stay.
Subdivisions Since Grassy Meadows
The town approved the Grassy Meadows subdivision in 1989, and Mountain View and Spencer Heights were among those that followed, the town's history records. Fewer than half of Ranlo's homes were built before 1970, by the Census figures this page prints. A kitchen with a boxed-in soffit above the wall cabinets can have an open top that looks straight into the attic. ENERGY STAR's fix is to pull back the insulation, cover and seal the opening, then lay the insulation back over it.
Attic Insulation in Ranlo
About 35 percent of Ranlo's homes predate 1970; if your joists show above the insulation, ENERGY STAR says to add more insulation.
From 1990 to 2009, about 35 percent of Ranlo homes were built to codes below ENERGY STAR's target; check their eaves, where ENERGY STAR says insulation is often thinnest.
The Local Climate
Ranlo's center sits about 800 feet above sea level, 2 miles from NOAA's Gastonia station, the best match for Ranlo. The station's 1991 to 2020 normals average about 3,000 heating and 1,850 cooling degree days a year, so at Ranlo's station, heating needs outweigh cooling.
Homes by Age: What It Means for the Attic
About 88 percent of Ranlo housing units are detached single-family houses.
In 2010 or later, about 20 percent of Ranlo homes went up; check their air sealing as well as the depth.
About 40 percent of Ranlo's housing units predate 1980; nearly all predate the state's 1978 insulation rule too.
Homes by Year Built
- Before 1940: 11% (±5), about 190 units
- 1940s: 5% (±5), about 95 units
- 1950s: 8% (±6), about 140 units
- 1960s: 8% (±4), about 145 units
- 1970s: 7% (±4), about 125 units
- 1980s: under 5%, about 45 units
- 1990s: 8% (±4), about 140 units
- 2000s: 27% (±9), about 460 units
- 2010s: 22% (±9), about 390 units
- 2020 or later: under 1%
Air Sealing and Duct Sealing in Ranlo
In Ranlo, about 38 percent of homes heat with electricity and about 57 percent with piped gas; forced air from either moves through ducts.
Air sealing comes first, as the EPA advises: wire and pipe holes, wall tops and soffits.
How Homes Here Are Heated
- Electricity: 38% (±10), about 640 households; Gaston County: 57%
- Piped gas: 57% (±11), about 960 households
- Wood: under 3%, about 25 households
Power, Gas and Rebates
Duke Energy Carolinas supplies Ranlo's electricity. For gas, Ranlo is in the Gaston County franchise of Enbridge Gas North Carolina, and about 57 percent of the town's homes heat with piped gas. Duke's free House Call fits many Ranlo homes: about 38 percent heat with electricity.
Rebate to check in Ranlo: Smart $aver Insulate and Seal (Duke Energy; Insulation Pros is an approved trade ally). Before a job in Ranlo, check its current terms; the Gaston County page lists every program.
Attic Insulation Removal in Ranlo
In a Ranlo attic, only wet, moldy or animal-soiled insulation is vacuumed out (ENERGY STAR's test), once the cause is fixed, and after mice that Ranlo attic is sanitized and deodorized; dry, clean insulation stays.
Also Serving Near Ranlo
Nearest to Ranlo first.
McAdenville, NC
3 miles southeast
Center about 210 feet lower than Ranlo's; 960 people, about a fifth of Ranlo's population
Attic insulation in McAdenvilleDallas, NC
4 miles northwest
Power from its own town system (Ranlo: Duke Energy Carolinas)
Attic insulation in DallasGastonia, NC
4 miles southwest
87,067 people, about 18 times Ranlo's population
Attic insulation in Gastonia
Ranlo Insulation FAQs
Is my Ranlo house listed as historic?
Not that the state's records show. None of the state preservation office's Register listings for Gaston County is in Ranlo. Its 2023 commission roster for the county names just two, one for the county and one for Gastonia's districts. So, as far as those records go, no historic designation shapes attic work here. An old mill house still gets its wiring, any chimney and the roof checked before insulation goes in.
Could the wiring in an old Ranlo mill house be old enough to matter for insulation?
It could, so it gets checked first. The town's history dates its mills to 1915 through 1921 and says the companies built rows of houses for their workers. Knob-and-tube wiring, used until about 1930, may still be strung through the attic of a house wired then. ENERGY STAR flags it as a fire hazard when buried. An electrician looks at any old runs first, and a live one is left uncovered.
Could the old insulation in a Ranlo attic be vermiculite?
It could: about 25 percent of Ranlo's homes predate 1960. If a Ranlo 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 Ranlo need a permit?
Ranlo Town Hall can say whether Gaston County Building Inspections, the town itself or another office handles permits in Ranlo; ask before work starts.
Helpful Guides
- Power from Duke Energy Carolinas: high summer electric bills and home energy audits
Sources
Census Bureau figures for Ranlo, NOAA normals for the Gastonia station, Duke Energy Carolinas (October 2026). Compiled by Insulation Pros. How the town pages are made.
Sources for the Ranlo notes and questions (read October 2026):
- Ranlo History, Town of Ranlo
- Ranlo-Rex-Priscilla and Smyre Mills, in The North Carolina Gazetteer (William S. Powell, 2nd ed., UNC Press 2010), NCpedia
- Session Laws 1963, Chapter 776, An Act to Incorporate the Town of Ranlo in Gaston County, North Carolina General Assembly
- Attic Air Sealing Project, ENERGY STAR
- Attic Insulation Project, ENERGY STAR
- Year Structure Built (table B25034), Ranlo town, American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau via Census Reporter
- Sealing Air Leaks in the Attic, ENERGY STAR do-it-yourself guide
- 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)
Serving Ranlo, NC
Insulation Pros is an insulation contractor serving North Carolina, Ranlo and the rest of Gaston County included.
Reach us
Send the square footage of your Ranlo attic, or call (336) 870-3893.