How to Repair Cracks in Concrete Slab

Concrete is a very diverse material, but is prone to cracking.

Concrete is a globally used material, famed for its suitability in a diverse range of applications and for its structural strength. However, over time, concrete can crack, either as part of the curing process or as a result of ground movement. Cracks can be a sign of serious structural failure, so before you repair any cracks, make sure you obtain the opinion of a structural engineer to ensure there are no serious problems.

Things You'll Need

• Broom/brush
• Vacuum cleaner
• Concrete filler
• Trowel
• Wet cloth
• Bucket

Instructions

1. Brush loose material from the inside of the crack. A wire brush will be most effective, but a plastic brush can will suffice.

2. Remove any fine dust from the crack with the vacuum cleaner.

3. Mix the concrete filler powder with water in a bucket, in accordance with the manufacturer's instructions as shown on the packaging.

4. Apply the concrete filler to the crack with a trowel, ensuring that you fill the entire crack and that the top of the filler is flush with the surface of the concrete.

5. Remove any excess filler from the concrete using a wet cloth or sponge.

Tips & Warnings

• A crack can be a symptom of a greater underlying problem. Make sure the concrete is structurally sound before proceeding.

References

• Inspectapedia: How to Seal Cracks in Concrete Floors & Walls