Water increases about 9% in volume when it freezes, wet soil can expand by at least that amount upon freezing. When this happens, the resulting pressure on a slab or foundation can cause it to shift and crack. The colder the temperature, the deeper the soil will freeze. In frigid temperatures, foundations that were not built below the “frost” or freezing line. Frost forces can lift a foundation upwards dramatically, sometimes by several inches or more, leading to serious frost heaving damage. to a foundation.
2. Frost Heave
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