Causes of Sunken Concrete and How to Prevent It

You’ve probably seen sunken concrete around Winnipeg—maybe even in your driveway or sidewalk. These problems aren’t just ugly. They can be dangerous and lead to bigger repair bills if you don’t act early.

This guide will help you understand sunken concrete and what you can do to stop it.

Common Sunken Concrete Causes

Soil Erosion

Water washes away soil under your slab. It creates empty spaces, and the concrete sinks into those gaps.

Poor Soil Compaction

If the ground wasn’t packed tightly before concrete was poured, it settles over time. Your slab sinks along with it.

Water Problems

Water pooling near your concrete is a major cause. Downspouts too close to the slab can wash away its base.

Freeze and Thaw

Winnipeg winters freeze water in cracks. As it expands and thaws, it shifts the concrete and causes it to sink.

Preventing Concrete Damage

-          Make sure water flows away from the concrete using long downspouts.

-          Compact the soil properly before pouring.

-          Use strong materials like rebar or mesh.

-          Seal concrete every few years.

-          Fix small cracks early.

Concrete Slab Sinking Solutions

Polyurethane Foam Injection

A quick method where foam is injected to lift the slab. It works fast and lasts a long time. Example: A garage floor in Steinbach was lifted in one afternoon.

Mudjacking

Heavier material is pumped below the slab. It works, but it may not be right for every case.

Talk to a Winnipeg concrete contractor like Boost Concrete. We do reliable Winnipeg concrete repairs using proven methods.