What Causes Concrete to Crack in Cold Weather?

Why Concrete Cracks in the Winter (And What You Can Do About It)

You may notice more cracks in your driveway or patio during the winter months—and there’s a reason for that. Iowa’s freeze-thaw cycles are brutal on concrete. But understanding the “why” can help you make smarter decisions about maintenance and repair come spring.Concrete is porous—it absorbs water. When temperatures drop, that water freezes, expands, and puts internal pressure on the slab. This can lead to:

• Hairline surface cracks

• Edge flaking or scaling

• Larger structural cracks over time

Older concrete or poorly sealed surfaces are more vulnerable, especially if de-icing salts are used regularly.

Can You Fix Winter Damage Now?

Not really. Most crack repairs and surface treatments require dry conditions and above-freezing temps. What you can do is:

• Avoid using salt

• Use a plastic shovel instead of metal

• Sweep off snow and slush regularly

• Keep an eye on new cracks and note them for spring

Want to know how we repair cracked slabs? Check out our repair services