What happens to foundations during freeze-thaw cycles?

In colder climates, it’s normal for the ground around your home to go through repeated freezing and thawing as the seasons change. Most homeowners don’t notice it directly, but it’s something every foundation experiences to some degree each year.

What’s actually changing isn’t the foundation itself as much as the soil around it. When moisture in the ground freezes, it expands slightly, and when it thaws, it settles back down. This cycle can repeat many times over the winter and early spring.

In most cases, this kind of movement is gradual and doesn’t cause immediate issues. Homes are built with the expectation that the ground will shift a bit over time, especially in areas with regular temperature swings.

Homeowners tend to become more aware of it when small changes start to appear. That might look like minor cracking, slight shifts in how doors or windows close, or subtle changes along walls or floors.

These signs are often normal seasonal movement. But if those changes start happening more quickly, become more noticeable, or let in moisture, that’s usually when people begin to pay closer attention.

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