Repairing Settled Concrete After Freeze-Thaw Cycles

Repairing Settled Concrete After Freeze-Thaw Cycles

Winter's icy grip can wreak havoc on more than just your mood. One of the most common casualties of the freeze-thaw cycle is concrete. Driveways, sidewalks, patios, and garage floors can succumb to settling and unevenness, creating tripping hazards and unsightly cracks. But fear not! You don't have to live with a lopsided landscape. Here's a breakdown of how to tackle settled concrete caused by winter's wrath.

Understanding the Culprit: The Freeze-Thaw Cycle

Water is the main culprit. When water seeps into the soil beneath your concrete, it expands as it freezes. This expansion pushes the concrete upward, a phenomenon known as "frost heave." When the ice melts, the soil contracts, leaving voids and causing the concrete to settle unevenly. Repeated cycles of freezing and thawing exacerbate this problem, leading to significant damage over time.

Identifying the Damage

Before you dive into repairs, it's crucial to assess the extent of the damage. Look for:

• Cracks: Hairline cracks may be cosmetic, but larger cracks indicate structural issues.
• Uneven Surfaces: Notice any dips, slopes, or raised sections in your concrete.
• Gaps: Gaps between concrete slabs or between concrete and adjacent structures.
• Water Pooling: Areas where water collects on the concrete surface.

Repair Options

The best repair method depends on the severity of the damage.

PolyLevel Foam Injection:

PolyLevel uses a high-density polyurethane foam to fill voids and stabilize and lift sinking concrete slabs. The expanding properties of the two-part urethane formula allows for accurate leveling of the slab. The result is a waterproof repair that's much more permanent than mudjacking and other common concrete repair methods.

Concrete Crack Sealing:

The NexusPro solution is installed by a highly trained crew that specializes in concrete repair and protection. First, the cracks are drilled, smoothed and prepared with non-absorbent backer rod filler. Then, the NexusPro sealant is inserted in the prepared crack or control joint. Finally, the cracks are detailed with a thin layer of native sand, giving the concrete a uniform, finished appearance. And, of course, sealed concrete cracks mean no unsightly weeds growing through.

4. Replacing the Concrete:

• In cases of severe damage or extensive cracking, complete replacement may be necessary.
• This is the most expensive option, but it provides a long-term solution.
• A professional concrete contractor is required for this.

Preventing Future Damage:

• Proper Drainage: Ensure that water drains away from your concrete surfaces. Install gutters, downspout extensions, and proper grading.
• Seal Cracks: Regularly seal cracks to prevent water from seeping into the concrete.
• Soil Compaction: Ensure that the soil beneath your concrete is properly compacted.
• De-icing: Use de-icing products sparingly, as they can damage concrete. Some are less damaging than others.
• Maintain Gutters: Clogged gutters cause water to overflow and pool around your concrete.

When to Call a Professional:

• If you're unsure about the extent of the damage.
• If you have large cracks or significant settling.
• If you want a long-term solution.

By understanding the causes of settled concrete and taking proactive measures, you can protect your investment and keep your concrete surfaces safe and attractive for years to come.

Contact Frontier Foundation & Crawl Space Repair today for an on-site inspection and free cost estimate of your concrete problems.