How to Resurface Aggregate Sidewalks

Clean the existing aggregate sidewalk with a hose and scrub brush. Use stain remover to scrub off any grease or oil stains that will otherwise weaken the bond between the old and new surface. Rinse off the cleaning solution thoroughly.

Fill in any shallow cracks and pits with concrete patch compound using a putty knife. If the holes are deeper than 1/2 inch, fill them with sand up to half an inch, and then fill the remaining hole with patch compound. Wait a few hours for the patches to dry completely.

Apply bonding adhesive over the aggregate sidewalk with a roller brush. The adhesive will strengthen the bond with the top layer of aggregate.

Fit 2-inch by 4-inch wooden form boards around the perimeter of the sidewalk. Screw the boards together with a drill. Hammer stakes into the ground outside of the boards to brace them against the pressure of wet aggregate.

Mix aggregate in a wheelbarrow with pre-made mix and the amount of water specified on the instructions. Use a drill and paddle pit to stir the aggregate thoroughly.

Pour aggregate over the existing sidewalk, using a gauge rake to spread it evenly. Pull a clean straightedge across the form to push off excess aggregate and fill low spots.

Use the side of a trowel to cut control joints across the sidewalk every 3 to 4 feet. Hold a board over the surface to guide the trowel so the joints are straight.

Enhance the appearance by using a soft brush to remove the thin top coating of cement paste from the aggregate to expose the shapes and colors of stones beneath.

Moisten a breathable material like burlap and lay it over the resurfaced sidewalk. Sprinkle it with a hose twice daily to slow-dry the sidewalk for four days.