How To Fill Cracks In A Driveway

Once cracks start to form in your driveway, they will spread unless you fix them. There are two steps to repairing cracks. 1) Fill the crack with a rubberized joint compound and 2) treat your driveway with a sealcoat. The first step will take care of the immediate damage to your driveway, and the second will help prevent future cracks. 

Crack Filling

Use the the following steps to fill cracks in your driveway:

  1. Use a hoe to remove any and all of the plants growing in the crack. 
  2. Use a pressure washer to remove any loose material that gathers in the crack. 
  3. Fill the crack halfway with a rubberized joint-filling compound. Make sure you use a rubberized compound so that it can flex as your driveway expands and contracts. Otherwise expansion and contraction will stress the patch and cause it to fail. 
  4. Give the compound in the crack half and hour or so to cure, then fill the crack the rest of the way. 
  5. Allow the compound to cure for a day before you drive on it. 

Seal Coating

Once you have filled your cracks, you need to take steps to prevent future cracks. If you have cracks in your driveway, there are two likely culprits:

  1. The sun has baked the residual moisture out of your driveway, leaving it brittle and prone to cracking.
  2. Water has frozen on your driveway and has formed cracks through the process of frost wedging. In either case, a seal coat will protect your driveway by keeping both water and the sun's UV rays away from your driveway. Buy a bucket of sealcoat and a long-handled squeegee. Paint the seal coat onto your driveway creating an even 1/8-of-an-inch thick covering. If you have a hard time locating seal coat, or you doubt your ability to do a quality job, call in the professionals.

If you have an asphalt driveway, then you need to understand that it begins to devolve into a web of cracks and potholes the day it is poured. While you can do nothing and simply wait for the day that it is so far gone that you have no choice but to replace it, you can get more life and thus better value from your driveway by using a sealcoat to prevent damage and repairing any cracks or potholes that do form as soon as possible. 

For more information, talk to a professional asphalt paver.