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A common issue for homeowners is cracked concrete driveways. The weather, wear and tear from usage, and other environmental factors can cause small cracks to form, which could eventually lead to serious damage. Fortunately, small to medium cracks are often repairable with the right tools, instructions, and patience. Here's how you can do it yourself.

1. What Causes Cracks in Concrete Driveways?

Concrete is a durable material, but it's not immune to damage. Cracks can commonly occur due to:

·   Temperature changes cause concrete to expand and contract

·   Heavy vehicle loads stressing the surface of the driveway

·   Improper installation, such as having a weak base or inadequate curing

·   Tree roots sprouting from underneath

·   Water damage, coming from poor drainage or water erosion under the slab

Understanding what caused the damage will help you assess what method of repair to use and what to do to prevent future damage.

2. When Should You Repair Your Driveway

It is important to know when to repair your driveway. Not all cracks are a cause for concern. You should repair your driveway when:

·   Cracks are more than 1/8 inch wide

·   The concrete surface is uneven or crumbling around the crack

·   Multiple cracks in the same area

·   Water is pooling or seeping into the cracks; this could further enhance the problem.

Addressing small issues early prevents them from turning into costly repairs later.

3. Tools and Materials You’ll Need

With any DIY project, preparation is key, so here are the supplies you will need to repair your concrete driveway:

·   Wire brush and broom

·   Concrete crack filler or patching compound

·   Chisel and hammer (for widening cracks if needed)

·   Caulking gun (for tube-type filler)

·   Putty knife or trowel

·   Concrete sealant (example: Concrete repair epoxy)

·   Safety gloves and goggles

You can find these at most hardware stores or home improvement centres, like on our online website at Mackun Hardware here.

4. How to Repair Cracked Concrete

Follow these steps to patch up your driveway like a pro:

1. Clean the crack – Use a wire brush to remove dirt, debris, and loose concrete. Sweep or rinse the area clean and let it dry.

2. Widen the crack (if necessary) – For better adhesion, use a chisel and hammer to slightly widen narrow cracks into a "V" shape.

3. Apply the filler – Using a caulking gun or trowel, fill the crack with the patching compound. Push it in deep to remove air pockets.

4. Smooth the surface – Use a putty knife or trowel to level the filler with the surrounding concrete.

5. Let it cure – Follow the product instructions for curing time. Avoid driving over the area during this period.

6. Seal the surface – Once fully cured, apply a concrete sealer to protect the repair from water and wear.

5. Tips for Preventing Future Cracks

Maintenance is key after doing repairs. Here are a few tips:

·   Seal your driveway regularly (with a concrete sealant every 2–3 years) to prevent water damage

·   Improve drainage by redirecting water away from the surface

·   Avoid parking heavy vehicles in the same spot repeatedly

·   Trim or remove trees nearby to prevent roots from shifting the concrete

·   Clean and inspect your driveway regularly for new cracks

Preventative measures will help in keeping your concrete driveway functional.

6. When to Call a Professional

Some cracks will need the expertise of a professional. Call a contractor if:

·   The cracks are wider than ½ inch

·   There is a major sinking

·   The driveway is old and severely damaged

·   There is suspected structural damage beneath the surface

Professional repair may cost more, but it ensures complicated repairs are handled correctly.

Final Thoughts

Fixing your concrete driveway doesn't have to be hard. With the right tools and patience, most homeowners can handle repairs on their own, besides the occasional large cracks. Regular maintenance and timely patching can prolong your driveway's lifespan. But never be afraid to ask a professional or expert for help when the damage to your driveway exceeds your capabilities. 

We hope this guide has been of great help and taught you proper concrete driveway repair. If you need more assistance, our team at Mackun Hardware is always ready to help.