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Insulation in Felton: July highs average about 87°F; January lows average about 26°F; the typical home was built around 1997 (31% before 1980).
In Kent County, July highs average about 87°F and January lows about 26°F, with roughly 45 inches of rain a year.
Over the last 10 years the National Weather Service recorded damaging thunderstorm winds, floods and hailstorms in Kent County, with hail up to 1 inches across. After a storm, a quick roof and gutter check catches damage before it turns into a leak.
The typical home in Kent County was built around 1997, about 29 years ago, and 31% were built before 1980.
Kent County has had 12 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 Kent County figures — more about homes in Dover.
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