Cold winters, yes. Last winter was colder than normal, about 9,900 heating degree days. A normal winter is about 9,000 HDD. Burned 627 therms of natural gas to heat a 1300 square foot house plus a 600 square foot shop. The shop is kept at 65 degrees.
Our footings are four feet down, with 4 inches of Foamular 400 under the footings.
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