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Insulation in Sussex: July highs average about 83°F; January lows average about 18°F; the typical home was built around 1972 (63% before 1980).
In Sussex County, July highs average about 83°F and January lows about 18°F, with roughly 48 inches of rain a year. Long, cold winters put furnaces and pipes to the test.
Over the last 10 years the National Weather Service recorded damaging thunderstorm winds, hailstorms and flash floods in Sussex County, with hail up to 1.5 inches across. After a storm, a quick roof and gutter check catches damage before it turns into a leak.
The typical home in Sussex County was built around 1972, about 54 years ago, and 63% were built before 1980. Homes that age often need updated wiring, plumbing and roofs.
Sussex County has had 18 federal disaster declarations in the last 25 years, most often for hurricanes; the latest was Remnants Of Hurricane Ida (2021).
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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 Sussex County figures — more about homes in Hopatcong.
Hamburg · Franklin · Branchville · Ogdensburg · Newton · Andover · Hopatcong · Bloomingdale