Understanding Frost Heave Cracks: Practical Tips to Protect Your Concrete This Winter

Frost heave occurs when moisture in the soil freezes and expands, pushing up on
concrete surfaces. Since water expands when it turns to ice, this natural process can
create enough pressure to lift and crack concrete.

In Minnesota, frost depth can reach up to five feet. According to the Minnesota
Department of Transportation, this varies by region, but homeowners across the state
deal with frost-related cracking every winter.

Soil Type Matters

Clay-rich soils hold water, making frost heave more likely. Sandy soils drain well, reducing moisture buildup and the risk of expansion. According to the USDA Natural Resources Conservation Service, soil composition directly affects how much water freezes underground.

Excess Moisture Can Make It Worse

Water infiltration increases the risk of frost heave. Common sources include:

• Improperly directed downspouts
• A high water table
• Landscaping features that trap water in the soil

The University of Minnesota Extension Service recommends ensuring water drains away from concrete surfaces to minimize long-term issues.

Not necessarily! While frost heave cracks can be unsightly, reinforced concrete is built

to handle natural freeze-thaw cycles. According to the Portland Cement Association, concrete cracks are common and don’t necessarily indicate structural failure. If rebar reinforcement was used, the concrete will remain stable despite surface cracks.

How to Address Frost Heave Cracks

• Fill cracks with a quality repair product to prevent further damage.
• Redirect water away from your concrete using proper drainage solutions.
• Consult a concrete professional if you’re unsure how to proceed.

Stay informed with the Richfield Concrete Podcast for more expert advice on keeping
your driveway and patio in top condition.

Episode 1

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