How to Seal a Driveway

Weather can have a harsh effect on asphalt driveways. Erosion due to wind and rain can cause cracks on the surface, and small cracks in the asphalt lead to larger cracks. Eventually, sizable holes can form, which could result in accidents or damage to your car. The best method of prevention for an unsightly and hazardous cracked driveway is to apply driveway sealant. Use these steps on how to seal a driveway if you want to increase the longevity and improve the appearance of your driveway.


  1. 1
    Measure your driveway to determine how much sealant to purchase.
    • The sealant usually comes in 5 gallon (18.927 liters) containers, which can cover as much as 400 square feet (121.92 meters).
  2. 2
    Buy your materials. You will need the sealant, a crack filler, a push broom and a trowel. These items can be found at hardware and home improvement stores.
    • Depending on the depth of the cracks in your driveway, you may need to purchase joint filler. If the cracks in your driveway are less than 1/2 inch (12.7 mm), the rubberized crack filler found in small tubes will work perfectly. If your cracks are deeper, you will need a patch filler.
  3. 3
    Find cracks in your driveway and fill them with the crack or patch filler. Squeeze the crack filler into the crack to make it level with the rest of the driveway. When using patch filler for deeper cracks, use a trowel to spread the filler and ensure a level surface.
  4. 4
    Allow the filler to dry for 1 day.
  5. 5
    Clear your driveway. Use the push broom to remove any dirt or debris. The sealant requires a clean surface to work properly.
  6. 6
    Wet the driveway with a garden hose. Do not wet the driveway so much that the water pools.
  7. 7
    Mix the sealer. Use the manufacturer's directions for mixing times.
  8. 8
    Apply the sealant in thin coats. Use the push broom to spread the sealant evenly.
    • Continue to mix the sealant during the spreading process so it doesn't separate.
  9. 9
    Add another coat of sealant. A second coat of sealant may be required if your driveway was old or heavily cracked.
  10. 10
    Wait for the driveway to dry. This can take up to 48 hours. Do not use the driveway even if the sealant feels dry to the touch. The sealant doesn't work until it has completely hardened.


  • Tape areas where the driveway touches concrete or landscaping. The sealer tends to splash during application.
  • Pour the sealant onto the highest point of the driveway. Gravity will make the job of applying the sealant easier.
  • Remove overgrown weeds or grass from the edges of your driveway. It will make it easier to spread the sealant and will also make the finished product look even better.


  • When purchasing a sealant, make sure you've chosen "driveway sealant" and not an asphalt coating for roofing purposes.
  • Avoid sealing your driveway if the temperature is less than 50 degrees Fahrenheit (10 degrees Celsius).
  • Do not apply driveway sealant if there is rain in the forecast for the next 2 days. The rain will erase the job you've just performed. Account for extra drying time if it's humid outside.

Things You'll Need

  • Measuring tape
  • Driveway sealant
  • Crack filler
  • Push broom
  • Trowel
  • Garden hose
  • Water
  • Painters tape (optional)

Article Info

Categories: Paths and Paving