4 Ways to Repair Sinking Concrete Steps

As homeowners, we often overlook the importance of our front door and the steps leading up to it. However, when guests visit, we suddenly notice the cracks, gaps, and sinking steps that have quietly deteriorated over time. These issues can affect your home’s aesthetics and may indicate foundation problems.

This page explores the reasons behind sinking concrete steps and provides practical solutions to repair and prevent this issue.

Sinking concrete refers to any concrete surface that settles or sinks into the ground, such as steps, driveways, or patios. This damage results in an uneven surface, cracks, and gaps between the concrete and adjacent structures, such as your home’s foundation.

There are many causes of sinking steps, which we will explore later on this page.

1. Polyurethane Foam Injection

PolyRenewal™ concrete lifting involves injecting a high-density polyurethane foam beneath the concrete steps.  This eco-friendly foam fills the voids, stabilizes the soil, and lifts the concrete to a level position. It is a quick, minimally invasive solution that addresses the underlying causes of damage and provides long-term results.

2. Mudjacking

Mudjacking, also known as slab jacking or concrete lifting, involves pumping a slurry mixture beneath the sinking concrete. This mixture fills the voids and lifts the steps back into place. While it’s an effective method for minor to moderate settling issues, it is not a long-term solution and does not address the underlying causes of the damage.

3. Foundation Piers

Foundation piers, such as helical piers, push piers, and slab piers, are driven deep into the stable ground below the shifting soils. These piers are attached to the affected area with a metal plate, providing a robust and reliable concrete support system.

4. Concrete Slab Replacement

In cases of severe damage, replacing the entire concrete slab may be necessary. This involves removing the existing steps, preparing the site, and pouring new concrete. 

• Improper soil compaction during construction
• Expansive soils, such as clay, that shift over time
• Sinkholes beneath the steps or in the yard
• Changes in temperature and other environmental factors
• Soil erosion due to poor drainage

• Ensure proper soil compaction during construction
• Use high-quality materials and construction methods
• Install adequate drainage to manage water runoff
• Regularly inspect and maintain your concrete steps
• Address problem signs promptly to prevent further damage

If you notice concrete damage on your property, don’t wait. Contact a trusted foundation repair expert in Calgary, like Groundworks, for a free inspection. We provide free inspections and recommend the best solution for your home’s structural health and safety.