How to Fix an Asphalt Crack

Pull any vegetation from the crack and spray deep roots with weed killer before leaving overnight. Remove loose pieces of asphalt from the crack. Sweep the asphalt with a broom to remove debris from the area.

Spray down the crack with a garden hose and apply asphalt cleaner to the area around the crack. Scrub the area with a stiff bristle brush and then use the hose to wash the cleaner away. Allow the area to dry completely.

Fill cracks no wider than 1/2-inch using an asphalt filler compound. Use a caulking gun and force the compound into the crack and smooth it out with a trowel or putty knife.

Repair larger cracks by pouring the compound or using a trowel to load the compound into the crack. Smooth it with a trowel. Avoid getting too much of the compound on the asphalt surface. Leave the filler compound to dry according to the package instructions.

Spray the area around the crack lightly with a garden hose. Pour acrylic sealer made for asphalt driveways along the total length of the crack and allow it to spread approximately 6 inches on either side. Smooth the line of sealer using a soft brush and feather it out slightly over the asphalt. Let the asphalt repair dry for 24 hours before walking or driving over it.