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Insulation in Northwest: July highs average about 90°F; January lows average about 35°F; the typical home was built around 2020 (0% before 1980).
In Brunswick County, July highs average about 90°F and January lows about 35°F, with roughly 55 inches of rain a year.
Over the last 10 years the National Weather Service recorded flash floods, damaging thunderstorm winds and tornadoes in Brunswick County, with hail up to 2 inches across. After a storm, a quick roof and gutter check catches damage before it turns into a leak.
The typical home in Brunswick County was built around 2020, about 6 years ago, and 0% were built before 1980.
Brunswick County has had 26 federal disaster declarations in the last 25 years, most often for hurricanes; the latest was Severe Winter Storm (2026).
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Uneven rooms, high bills and an attic you can see the joists in are the signs; older homes often have far too little.
Attic insulation and air-sealing usually pay back fastest.
These are Brunswick County figures — more about homes in Leland.
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