Best Way To Fill Large Cracks In Concrete Driveway

A mixing paddle chucked in a drill makes preparing the patching material easy.

Best way to fill large cracks in concrete driveway.

Stab the trowel into the compound to remove air pockets and help work the patching material deep into the crack. Next mix up enough quikrete concrete resurfacerwith water in a five gallon bucket to fill the cracks. Mix the concrete patching compound following the manufacturer s directions. This last option works best to fill large cracks or chipped edges while the other products are suitable for cracks in.

Wet the crack slightly and begin filling it in with grout applying layers no thicker than inch. Be sure to clean the crack. Another good method for filling up cracks in concrete is to use hydrophobic polyurethane expanding foam. On cracks that are wider than 1 4 push foam backer rod into the crack with a screwdriver so it s 1 2 below the surface then fill the crack with concrete repair caulk.

Be sure to clean out the cracks out as well removing any dirt or loose concrete so the patching material will adhere to the concrete. Trowel the compound into the crack. As you can probably tell by the name of it this material is designed to expand just like insulation foam for walls. Change to a high pressure nozzle on the pressure washer and finishing cleaning the driveway on high power following the instructions on the cleaning solution.

Let the concrete dry before filling the cracks. You can either fill the crack with sand leaving inch to the surface of the crack to be filled with the grout or make multiple grout applications that are inch thick allowing adequate time for each application to dry. Fill the crack up to the surrounding concrete surface. Fill the crack with concrete repair caulk such as polyurethane concrete crack sealant from quikrete.

Fill a pressure washer with a concrete outdoor cleaning solution and apply it at low pressure to stains mold and dirt. If the joint is inch or wider you ll want to insert a foam backer rod into the crack first to prevent the sealant from running down and out of the crack.