Concrete is a popular choice for sidewalks, driveways, patios, and foundations due to its strength and durability. However, even the strongest slabs can sink over time, affecting your property’s look and creating safety risks. Understanding what causes sinking concrete and how to prevent it can save you from costly repairs and long-term damage.
Common Causes of Sunken Concrete
1. Soil Erosion Beneath the Slab
Concrete often sinks because the soil beneath it erodes. Rain, poor drainage, or plumbing leaks can wash away the supporting soil. Without a stable base, the concrete settles..
2. Poorly Compacted Soil During Construction
If the soil under the concrete wasn’t compacted properly during the pour, it can settle over time. This weak base can’t support the concrete’s weight, causing it to sink..
3. Freeze-Thaw Cycles
Temperatures fluctuate, and freeze-thaw cycles occur often. As soil moisture freezes, expands, and thaws, it creates air pockets under the slab, causing the concrete to shift or sink.
4. Heavy Loads
Concrete slabs are strong, but they aren’t indestructible. Repeatedly parking heavy vehicles or placing large structures like sheds or hot tubs on them can cause the concrete to settle or crack.
Signs Your Concrete Is Sinking
Identifying the early warning signs of sunken concrete is key to preventing larger issues. Look for:
- Cracks forming across the slab
- Uneven surfaces or trip hazards
- Water pooling in low spots
- Gaps between the slab and adjacent structures like stairs or garage floors
These problems may start small, but ignoring them can lead to more extensive and expensive damage.
Why Prompt Repair Is Important
A sinking slab isn’t just a cosmetic issue. Left untreated, it can:
- Create a serious tripping hazard
- Lead to water damage near your home’s foundation
- Decrease your property value
- Increase the cost of repair if damage worsens
Seasonal weather patterns and shifting soil are common, acting quickly is essential.
How to Fix Sunken Concrete
1. Concrete Leveling
Concrete leveling is an effective solution that raises slabs by injecting material beneath them. Concrete leveling in Ogden is a popular choice for homeowners because it’s faster, cheaper, and less invasive than replacing the slab.
2. Slabjacking or Mudjacking
This method pumps a slurry beneath the slab to fill voids and lift it, making it ideal for driveways, patios, and sidewalks. While effective, it’s less suitable for areas with frequent water exposure.
3. Polyurethane Foam Injection
This modern technique uses lightweight foam that expands to fill voids and raise concrete. It’s fast-setting and moisture-resistant, making it ideal for more sensitive or high-traffic areas.
Preventing Future Sinking
Fixing the problem is only half the solution. Prevention is just as important:
- Improve Drainage: Make sure gutters and downspouts direct water away from slabs. Avoid water pooling around foundations.
- Seal Cracks: Prevent moisture from seeping under slabs by sealing any visible cracks promptly.
- Limit Heavy Loads: Be mindful of where you park heavy vehicles or store large items.
- Inspect Regularly: Monitor your property for signs of shifting, especially after storms or during seasonal changes.
These steps can go a long way in keeping your concrete safe and level throughout the year.
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When to Call for Help
Many homeowners try DIY repairs, but a professional evaluation ensures the job is done right. If your concrete slab is uneven, cracked, or pooling water, it’s time to call a concrete leveling expert. They can assess the damage, recommend a solution, and restore your concrete quickly and safely.
Conclusion
Sunken concrete is a common issue for homeowners, but it’s not one to overlook. Whether caused by erosion, soil compaction, or freezing temperatures, it can lead to more serious problems if left unaddressed. Fortunately, expert concrete leveling and regular maintenance can restore your surfaces and provide lasting protection for your property.
