Bogue, NC
2 miles north
Median home built 1998 (Emerald Isle: 1989); 706 people, about a sixth of Emerald Isle's population
Attic insulation in BogueAttic Insulation in Emerald Isle, NC
Blown-in attic insulation for Emerald Isle, NC, in Carteret County, plus removal and air sealing.
About Emerald Isle and Its Homes
Emerald Isle covers the western end of Bogue Banks and was incorporated in 1957, its name taken from how green the undeveloped island looked from the air. It has been a town of summer cottages from its start, and nearly all of its homes date from 1970 on.
Emerald Isle, in Carteret County, grew from 3,846 people in 2020 to 3,970 in 2025 (Census Bureau estimates), on 4.92 square miles. That makes Emerald Isle the fourth-largest town in Carteret County.
Emerald Isle has about 6,900 housing units, 13 percent of Carteret County's; 86 percent of the town's households own their home. Only about 1,940 of those 6,900 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 1,940.
Emerald Isle at a Glance
- County: Carteret County
- Population: 3,970 (2025), 3,846 (2020), up 3.2%
- Land area: 4.92 square miles (807 people each)
- Housing units: about 6,900 (±194)
- Median year built: 1989 (±2); Carteret County: 1989
- Owner-occupied: 86% (±4); Carteret County: 75%
- Detached houses: 62% (±3); Carteret County: 61%
- Attached houses: 13% (±3)
- Apartments: 14% (±3)
- Mobile homes: 12% (±2)
- Climate zone: 3 on both maps
- ENERGY STAR target for Emerald Isle attics: R-49 from bare, R-38 over 3 to 4 inches (R-value guide)
Census Bureau estimates for Emerald Isle, 2020 to 2024 (± margin of error).
Emerald Isle Homes and Their Attics
Cottages Built for Summer Weeks
The 2012 county survey describes Emerald Isle as thousands of summer cottages put up from the late 1950s on. The earliest, from about 1959 to 1962, were one-story frame houses with knotty pine walls inside. Until the high-rise bridge from Cedar Point opened in 1971, getting here took a ferry from Swansboro or a long drive from the Morehead City bridge. A cottage built for summer use may never have been insulated for living through a winter, and owners since may have added a lot, a little or nothing. So on install day the crew assumes nothing and measures the depth across the whole attic with you.
Attic Insulation in Emerald Isle
If the joists show above the insulation in an Emerald Isle attic, ENERGY STAR says to add more insulation.
Built from 1970 to 1989, 49 percent of Emerald Isle homes may hold settled fiberglass; check its depth against the joists.
The Local Climate
Emerald Isle's center sits near sea level, 8 miles from NOAA's Newport/Morehead City Weather Office station, the best match for Emerald Isle. The station's 1991 to 2020 normals average about 2,780 heating and 1,710 cooling degree days a year, so at Emerald Isle's station, heating needs outweigh cooling.
Readings change over short distances around Emerald Isle: NOAA's Morehead City 2 WNW station, 13 miles away, averages about 2,480 heating degree days. The state energy code marks Carteret County warm and humid.
Homes by Age: What It Means for the Attic
Some 62 percent of Emerald Isle housing units are detached single-family houses, 12 percent mobile homes.
From 1990 to 2009, 40 percent of Emerald Isle homes were built to codes below ENERGY STAR's target; check their eaves, where ENERGY STAR says insulation is often thinnest.
About 20 percent of Emerald Isle's housing units predate 1980; nearly all predate the state's 1978 insulation rule too.
Homes by Year Built
- Before 1940: under 1%
- 1940s: under 1%
- 1950s: under 1%
- 1960s: 3% (±1), about 205 units
- 1970s: 17% (±3), about 1,160 units
- 1980s: 32% (±4), about 2,200 units
- 1990s: 26% (±3), about 1,820 units
- 2000s: 14% (±3), about 970 units
- 2010s: 6% (±2), about 410 units
- 2020 or later: 2% (±1), about 120 units
Air Sealing and Duct Sealing in Emerald Isle
In Emerald Isle, 90 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: 90% (±4), about 1,750 households; Carteret County: 87%
- Piped gas: under 4%, about 40 households
- Bottled or tank gas: 7% (±3), about 130 households
Power, Gas and Rebates
Power in and around Emerald Isle comes from Duke Energy Progress and Carteret-Craven Electric Cooperative; your bill says which. For gas, Emerald Isle is in the Carteret County franchise of Piedmont Natural Gas, whose mains may not reach every street in Emerald Isle. Duke's free House Call fits many Emerald Isle homes: 90 percent of households heat with electricity.
Rebate to check if Duke Energy Progress serves your Emerald Isle home: Smart $aver Insulate and Seal (Duke Energy; Insulation Pros is an approved trade ally). Before a job in Emerald Isle, check its current terms; the Carteret County page lists every program.
Attic Insulation Removal in Emerald Isle
In an Emerald Isle attic, only wet, moldy or animal-soiled insulation is vacuumed out (ENERGY STAR's test), once the cause is fixed, and after mice that Emerald Isle attic is sanitized and deodorized; dry, clean insulation stays.
Also Serving Near Emerald Isle
Nearest to Emerald Isle first.
Cedar Point, NC
3 miles northwest
Median home built 2000 (Emerald Isle: 1989); 1,825 people, about half of Emerald Isle's population
Attic insulation in Cedar PointPeletier, NC
5 miles northwest
Median home built 1995 (Emerald Isle: 1989); 803 people, about a fifth of Emerald Isle's population
Attic insulation in PeletierSwansboro, NC
6 miles west
Median home built 2002 (Emerald Isle: 1989); Its NOAA station logs about 290 fewer heating degree days than Emerald Isle's
Attic insulation in Swansboro
Emerald Isle Insulation FAQs
Are any Emerald Isle houses historic enough to come with rules?
No. The 2012 county survey found no significant concentration of historic buildings in Emerald Isle, and it skipped even the oldest cottages because later changes had altered them so much. There is no National Register property in town either, and the only preservation board the state listed for Carteret County in 2023 serves Beaufort. Insulating or air sealing an attic here involves no historic review.
Our cottage sits empty for weeks. How would we know a storm wet the attic?
Only by looking, so make the attic part of your walk-through after every big storm. During Hurricane Florence in 2018, the federal Weather Prediction Center listed more than 23 inches of rain near Emerald Isle in its storm summary. In a house nobody is living in, a slow roof leak can go unseen for a long time. ENERGY STAR names damp or stained insulation as the warning sign. Fix the roof before anything else. Then the soaked material is vacuumed away and new insulation blown in.
Does attic insulation in Emerald Isle need a permit?
Emerald Isle Town Hall can say whether Carteret County Planning & Development, the town itself or another office handles permits in Emerald Isle; ask before work starts.
Helpful Guides
- Carteret County is warm and humid by the state energy code: attic condensation and mold and attic ventilation
Sources
Census Bureau figures for Emerald Isle, NOAA normals for the Newport/Morehead City Weather Office station (October 2026). Compiled by Insulation Pros. How the town pages are made.
Sources for the Emerald Isle notes and questions (read October 20, 2026):
- Emerald Isle, in The North Carolina Gazetteer (William S. Powell, 2nd ed., UNC Press 2010), NCpedia
- Town History, Town of Emerald Isle
- Carteret County architectural survey report, 2012 (listed by the NC HPO as the Carteret County Survey)
- Year Structure Built (table B25034), Emerald Isle town, American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau via Census Reporter
- 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)
- Storm Summary Number 8 for Heavy Rain and Wind Associated with Florence, NOAA Weather Prediction Center
Emerald Isle, NC
Open in Google Maps (opens in a new tab)Serving Emerald Isle, NC
Insulation Pros is an insulation contractor serving North Carolina, Emerald Isle and the rest of Carteret County included.
Reach us
Send the square footage of your Emerald Isle attic, or call (336) 870-3893.