How to Seal Cracks in Concrete Driveway

Have you noticed cracks in your driveway? Cracks in concrete driveways are quite common in Northeast Ohio due to the wide range of weather conditions we experience, as well as other issues like soil movement, heavy loads, and ground settlement. If you want to seal these cracks yourself, we have some tips.

To seal cracks in a concrete driveway effectively, you should start by cleaning the cracks with a wire brush to remove debris. Then, use a high-quality concrete crack filler to fill the cracks, making sure to overfill slightly to account for settling. Smooth the filler with a putty knife and allow it to dry according to the manufacturer’s instructions. Once the filler is dry, you can apply a concrete sealer to the entire driveway to provide an extra layer of protection.

Regularly inspecting your concrete driveway for cracks and promptly sealing them can help prevent costly repairs and keep your driveway looking its best for years to come by maintaining its structural integrity and appearance.

Materials and Tools Needed for Concrete Crack Repair

1. Safety Gear: Gloves, safety glasses, and dust mask.
2. Concrete Crack Filler: Depending on the crack size, you can use concrete caulk, concrete patching compound, or an epoxy-based filler.
3. Chisel and Hammer: For widening and cleaning the cracks.
4. Wire Brush: To clean out debris from the cracks.
5. Pressure Washer or Garden Hose: To wash away loose debris.
6. Shop Vacuum: To remove any remaining debris after washing.
7. Caulking Gun: If using a tube of concrete caulk.
8. Putty Knife or Trowel: This is used to apply and smooth the filler.
9. Concrete Sealer: To protect the entire driveway surface after repairs.
10. Paintbrush or Roller: This is used to apply the concrete sealer.

Step-by-Step Guide: Concrete Crack Repair

Step 1: Inspect and Clean the Cracks

1. Inspect the Cracks: Examine the driveway for all cracks, noting their size and depth.
2. Chisel and Hammer: Use the chisel and hammer to widen the cracks slightly. This will help the filler adhere better. Remove any loose concrete.
3. Wire Brush: Scrub the inside of the cracks with a wire brush to clear out loose debris and dust.
4. Pressure Washer/Garden Hose: Wash out the cracks to remove any remaining debris. Ensure the cracks are clean and free from dirt and plant material.
5. Dry the Cracks: Allow the cracks to dry completely. You can use a shop vacuum to speed up this process and ensure no water is left in the cracks.

Step 2: Apply the Crack Filler

1. Prepare the Filler: Depending on the filler you’re using, you might need to prepare it according to the manufacturer’s instructions.
2. Fill the Cracks:
   • Concrete Caulk: For narrow cracks, load the caulk into a caulking gun and apply it to the cracks. Overfill slightly to account for shrinkage.
   • Concrete Patching Compound: Use a trowel to apply the patching compound for wider cracks. Smooth it out so it is level with the surrounding concrete.
   • Epoxy-Based Filler: For deeper and more extensive cracks, mix the epoxy filler according to the instructions and apply it with a putty knife or trowel. Ensure it fills the crack.
3. Smooth the Surface: Use a putty knife or trowel to smooth out the surface of the filler, making it level with the driveway.

Step 3: Allow the Filler to Cure

1. Curing Time: Let the filler cure for the amount of time specified by the manufacturer. This can range from a few hours to a few days.
2. Avoid Traffic: To ensure a solid seal, keep vehicles and foot traffic off the repaired areas during the curing process.

Step 4: Apply Concrete Sealer

1. Choose the Sealer: Select a concrete sealer suitable for driveways. Sealers come in various types, such as penetrating, acrylic, and epoxy.
2. Prepare the Surface: Ensure the driveway is clean and dry before applying the sealer.
3. Application: Apply the sealer using a paintbrush or roller. Follow the manufacturer’s instructions for the best results, which usually involve applying an even coat and avoiding puddles.
4. Drying Time: Allow the sealer to dry completely before using the driveway. This typically takes 24-48 hours.

Tips for Maintaining Your Driveway

• Regular Cleaning: Keep your driveway clean from dirt, leaves, and other debris to prevent cracks from forming.
• Seal Regularly: Apply a concrete sealer every 2-3 years to protect the surface from water and other elements.
• Address Cracks Early: Repair cracks as soon as you notice them to prevent them from widening or deepening.
• Avoid De-icing Chemicals: Use sand instead of salt-based deicers to prevent damage to the concrete.

By following these steps, you can seal cracks in your concrete driveway effectively, protecting it from further damage and extending its lifespan. Regular maintenance and timely repairs are key to keeping your driveway in good condition. Before you repair those cracks, have Pristine Clean come out to wash and seal your concrete driveway.