Sunset Beach, NC
3 miles west
Median home built 2000 (Ocean Isle Beach: 1996); 4,642 people, about 5 times Ocean Isle Beach's population
Attic insulation in Sunset BeachAttic Insulation in Ocean Isle Beach, NC
Blown-in attic insulation for Ocean Isle Beach, NC, 3 miles from Sunset Beach, plus removal and air sealing.
About Ocean Isle Beach and Its Homes
Ocean Isle Beach, an island town on the Atlantic in southern Brunswick County, was incorporated in 1959. A soil map from a 1932 survey shows a Coast Guard station on what was then called Gause Beach, reached by a road across the marsh from Gause Landing.
Ocean Isle Beach, in Brunswick County, grew from 840 people in 2020 to 940 in 2025 (Census Bureau estimates), on 3.74 square miles.
Ocean Isle Beach has about 3,400 housing units, 3 percent of Brunswick County's; 96 percent of the town's households own their home. Only about 510 of those 3,400 units were someone's usual home in the Census Bureau's 2020 to 2024 survey; the heating and owner figures on this page describe those 510.
Ocean Isle Beach at a Glance
- County: Brunswick County
- Population: 940 (2025), 840 (2020), up 11.9%
- Land area: 3.74 square miles (251 people each)
- Housing units: about 3,400 (±200)
- Median year built: 1996 (±2); Brunswick County: 2002
- Owner-occupied: 96% (±5); Brunswick County: 85%
- Detached houses: 70% (±4); Brunswick County: 69%
- Attached houses: 2% (±1)
- Apartments: 26% (±4)
- Mobile homes: 2% (±1)
- Climate zone: 3 on both maps
- ENERGY STAR target for Ocean Isle Beach attics: R-49 from bare, R-38 over 3 to 4 inches (R-value guide)
Census Bureau estimates for Ocean Isle Beach, 2020 to 2024 (± margin of error).
Attic Insulation in Ocean Isle Beach
If the joists show above the insulation in an Ocean Isle Beach attic, ENERGY STAR says to add more insulation.
From 1990 to 2009, 49 percent of Ocean Isle Beach homes were built to codes below ENERGY STAR's target; check their eaves, where ENERGY STAR says insulation is often thinnest.
The Local Climate
Ocean Isle Beach's center sits near sea level, 3 miles from NOAA's Shallotte Ag station, the best match for Ocean Isle Beach. The station's 1991 to 2020 normals average about 2,430 heating and 1,860 cooling degree days a year, so Ocean Isle Beach attics work in both seasons.
The state energy code marks Brunswick County warm and humid.
Homes by Age: What It Means for the Attic
Some 70 percent of Ocean Isle Beach housing units are detached single-family houses.
Built from 1970 to 1989, 36 percent of Ocean Isle Beach homes may hold settled fiberglass; check its depth against the joists.
About 11 percent of Ocean Isle Beach's housing units predate 1980; nearly all predate the state's 1978 insulation rule too. Some 26 percent of Ocean Isle Beach units sit in buildings of two or more homes, where the attic is often shared.
Homes by Year Built
- Before 1940: under 1%
- 1940s: under 1%
- 1950s: 1% (±1), about 25 units
- 1960s: 2% (±1), about 65 units
- 1970s: 8% (±2), about 280 units
- 1980s: 27% (±3), about 920 units
- 1990s: 21% (±3), about 700 units
- 2000s: 28% (±3), about 960 units
- 2010s: 10% (±3), about 330 units
- 2020 or later: 3% (±1), about 100 units
Air Sealing and Duct Sealing in Ocean Isle Beach
In Ocean Isle Beach, 93 percent of households 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: 93% (±5), about 480 households; Brunswick County: 87%
- Piped gas: 2% (±2), about 10 households
- Bottled or tank gas: 4% (±3), about 20 households
Power, Gas and Rebates
Duke Energy Progress serves most of Ocean Isle Beach, Brunswick Electric its edges; your bill says which. For gas, Ocean Isle Beach is in the Brunswick County franchise of Piedmont Natural Gas, whose mains may not reach every street in Ocean Isle Beach. Duke's free House Call fits many Ocean Isle Beach homes: 93 percent of households heat with electricity.
Rebate to check in Ocean Isle Beach: Smart $aver Insulate and Seal (Duke Energy; Insulation Pros is an approved trade ally). Before a job in Ocean Isle Beach, check its current terms; the Brunswick County page lists every program.
Attic Insulation Removal in Ocean Isle Beach
In an Ocean Isle Beach attic, only wet, moldy or animal-soiled insulation is vacuumed out (ENERGY STAR's test), once the cause is fixed, and after mice that Ocean Isle Beach attic is sanitized and deodorized; dry, clean insulation stays.
Also Serving Near Ocean Isle Beach
Nearest to Ocean Isle Beach first.
Calabash, NC
5 miles west
Median home built 1995 (Ocean Isle Beach: 1996); Its NOAA station logs about 240 more heating degree days than Ocean Isle Beach's
Attic insulation in CalabashCarolina Shores, NC
7 miles west
Median home built 2004 (Ocean Isle Beach: 1996); 5,540 people, about 6 times Ocean Isle Beach's population
Attic insulation in Carolina ShoresShallotte, NC
8 miles northeast
5,335 people, about 6 times Ocean Isle Beach's population
Attic insulation in ShallotteHolden Beach, NC
8 miles east
Median home built 1992 (Ocean Isle Beach: 1996)
Attic insulation in Holden Beach
Ocean Isle Beach Insulation FAQs
What should I check in my Ocean Isle Beach attic after a hurricane?
Check the roof first, then the insulation under any damaged spot. The National Weather Service says Hurricane Isaias made landfall right at Ocean Isle Beach on August 3, 2020. Two years earlier, it notes, Florence left mostly minor damage here to siding, shingles and trees. Even a few missing shingles can let wind-driven rain into the attic. Insulation that feels wet is, in ENERGY STAR's terms, the mark of a leaking roof, so the roofer goes first. Then we vacuum out the soaked insulation and blow in fresh.
Are Ocean Isle Beach houses covered by any historic rules?
Not by anything in the state's records. The town has no entry among Brunswick County's National Register listings, and the 2023 statewide roster of local preservation commissions lists none for the county. The county's 2010 architectural survey explains why the county's beaches kept so little old building: Hurricane Hazel in 1954 swept the barrier islands clean of most structures. Building here mostly came afterward, and this page's housing table puts most homes in town at 1970 or later.
Does attic insulation in Ocean Isle Beach need a permit?
Ocean Isle Beach Town Hall can say whether Brunswick County Permits & Development, the town itself or another office handles permits in Ocean Isle Beach; ask before work starts.
Helpful Guides
- Brunswick County is warm and humid by the state energy code: attic condensation and mold and attic ventilation
- Power from Duke Energy Progress: high summer electric bills and home energy audits
Sources
Census Bureau figures for Ocean Isle Beach, NOAA normals for the Shallotte Ag station, Duke Energy Progress (October 2026). Compiled by Insulation Pros. How the town pages are made.
Sources for the Ocean Isle Beach introduction and questions (read October 20, 2026):
- Ocean Isle Beach, in The North Carolina Gazetteer (William S. Powell, 2nd ed., UNC Press 2010), NCpedia
- Comprehensive Historical/Architectural Site Survey of Brunswick County, North Carolina (Landmark Preservation Associates, 2010; listed by the NC HPO as the Brunswick County Survey, 2010)
- Hurricane Isaias, August 3-4, 2020, event summary, National Weather Service Wilmington, North Carolina
- Hurricane Florence, September 14, 2018, event summary, National Weather Service Wilmington, North Carolina
- Attic Insulation Project, ENERGY STAR
- 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), Ocean Isle Beach town, American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau via Census Reporter
Ocean Isle Beach, NC
Open in Google Maps (opens in a new tab)Serving Ocean Isle Beach, NC
Insulation Pros is an insulation contractor serving North Carolina, Ocean Isle Beach and the rest of Brunswick County included.
Reach us
Send the square footage of your Ocean Isle Beach attic, or call (336) 870-3893.