Lumber Bridge, NC
5 miles north
Its NOAA station logs about 460 more heating degree days than Rennert's; 80 people, about a quarter of Rennert's population
Attic insulation in Lumber BridgeAttic Insulation in Rennert, NC
Blown-in attic insulation for Rennert, NC, in Robeson County, plus removal and air sealing.
About Rennert and Its Homes
Rennert, in northern Robeson County, went by McAlpin's Grove until the Atlantic Coast Line tracks came through and a new name came with them. Chartered in 1895 and dissolved in 1947, it is an incorporated town again, though little has been recorded about how its houses were built.
Rennert, in Robeson County, grew from 279 people in 2020 to 294 in 2025 (Census Bureau estimates), on 1.1 square miles.
Rennert at a Glance
- County: Robeson County
- Population: 294 (2025), 279 (2020), up 5.4%
- Land area: 1.1 square miles (267 people each)
- Housing units: about 160 (±64)
- Climate zone: 3 on both maps
- ENERGY STAR target for Rennert attics: R-49 from bare, R-38 over 3 to 4 inches (R-value guide)
Census Bureau estimates for Rennert, 2020 to 2024 (± margin of error).
Attic Insulation in Rennert
If the joists show above the insulation in a Rennert attic, ENERGY STAR says to add more insulation.
The Local Climate
Rennert's center sits about 180 feet above sea level, 13 miles from NOAA's Lumberton station, the best match for Rennert. The station's 1991 to 2020 normals average about 2,820 heating and 1,940 cooling degree days a year, so Rennert attics work in both seasons.
Homes by Age: What It Means for the Attic
At about 160 housing units, give or take 64, Rennert is too small for the survey to date its houses. For Rennert, the nearest town with solid figures is Red Springs, 6 miles off: median year built 1968 and about 55 percent of homes built before 1970.
Air Sealing and Duct Sealing in Rennert
In Red Springs, the nearest town to Rennert with solid figures, about 70 percent of homes heat with electricity.
Air sealing in a Rennert attic covers wire and pipe holes, wall tops, the attic stair and bath fans.
How Homes Here Are Heated
- Bottled or tank gas: 23% (±9), about 35 households
- Wood: under 6%
Power, Gas and Rebates
Duke Energy Progress serves most of Rennert, Lumbee River EMC its edges; your bill says which. For gas, Rennert is in the Robeson County franchise of Piedmont Natural Gas, whose mains may not reach every street in Rennert.
Rebate to check in Rennert: Smart $aver Insulate and Seal (Duke Energy; Insulation Pros is an approved trade ally). Before a job in Rennert, check its current terms; the Robeson County page lists every program.
Attic Insulation Removal in Rennert
In a Rennert attic, only wet, moldy or animal-soiled insulation is vacuumed out (ENERGY STAR's test), once the cause is fixed, and after mice that Rennert attic is sanitized and deodorized; dry, clean insulation stays.
Also Serving Near Rennert
Nearest to Rennert first.
Red Springs, NC
6 miles west
Power from its own town system (Rennert: Duke Energy Progress); 3,216 people, about 11 times Rennert's population
Attic insulation in Red SpringsSt. Pauls, NC
6 miles east
2,109 people, about 7 times Rennert's population
Attic insulation in St. PaulsPembroke, NC
12 miles southwest
Its NOAA station logs about 210 fewer heating degree days than Rennert's; 2,888 people, about 10 times Rennert's population
Attic insulation in Pembroke
Rennert Insulation FAQs
Rennert went without a town charter for years. Do any historic rules apply to my house?
None that reach an attic. Rennert has nothing on the state's Register roll for Robeson County, and the preservation office's 2023 directory of commission staff skips the county altogether. With no local district, nobody reviews the outside of your house either. The decades without a charter after 1947 do not change what your attic needs. That comes down to how the house was framed and what earlier owners put up there.
Would any law have made the builder of my Rennert house insulate it?
Not unless work on it started January 1, 1978 or later. A state statute from then bars moving into a newly begun home until it meets the insulation standards, in places where a county or city enforces them. Homes started earlier had no such requirement, so any insulation in an older attic went in by an owner's choice. On install day the crew checks before adding anything. Airflow is part of that: ENERGY STAR treats an attic with scant or no venting as a fault to fix before insulating.
Does attic insulation in Rennert need a permit?
Rennert Town Hall can say whether Robeson County Community Development, the town itself or another office handles permits in Rennert; ask before work starts.
Helpful Guides
- Power from Duke Energy Progress: high summer electric bills and home energy audits
- Hot summers at NOAA's Lumberton station: radiant barriers
Sources
Census Bureau figures for Rennert, NOAA normals for the Lumberton station, Duke Energy Progress (October 2026). Compiled by Insulation Pros. How the town pages are made.
Sources for the Rennert introduction and questions (read October 20, 2026):
- Rennert, in The North Carolina Gazetteer (William S. Powell, 2nd ed., UNC Press 2010), NCpedia
- TIGERweb Incorporated Places layer, record for Rennert town (GEOID 3755940), U.S. Census Bureau
- 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)
- N.C. Gen. Stat. 143-139.2, Enforcement of insulation requirements; certificate for occupancy
- Attic Insulation Project, ENERGY STAR
Rennert, NC
Open in Google Maps (opens in a new tab)Serving Rennert, NC
Insulation Pros is an insulation contractor serving North Carolina, Rennert and the rest of Robeson County included.
Reach us
Send the square footage of your Rennert attic, or call (336) 870-3893.