How to Fix Pitted and Cracked Garage Concrete

Concrete garage floors are extremely durable and can last for many years without requiring repairs, but as with all floor types periodic repairs are inevitable. Pits occur typically where a hard substance is pressed into the concrete, such as a rock lodged in a car’s tire. Cracks usually develop when the bottom of the slab is exposed to water. The key to repairing the damage properly lies in preparing the surfaces for new concrete.

Wire brush or drill fitted with a wire wheel attachment
Cold chisel
Hand maul
Garden hose
Bonding adhesive
Paintbrush
Concrete sand
Sand-mix concrete
Concrete fortifier
Trowel

Instructions

- 1
  Scrub the damaged areas with a wire brush or with a drill fitted with a wire wheel attachment to free any loose material.
- 2
  Chisel a backward-angled slope into both sides of the cracks with a cold chisel and a hand maul to prevent the patching compound from later popping out of the crack.
- 3
  Spray the debris out of the damaged areas with a garden hose to ensure that the patching compound adheres properly to the surface, then allow the concrete to dry.
- 4
  Apply a thin layer of bonding adhesive to the damaged areas with a paintbrush.
- 5
  Pour concrete sand to within 1/2 inch of the top of any cracks wider than 1/4 inch.
- 6
  Mix sand-mix concrete with a concrete fortifier by following the manufacturer’s directions.
- 7
  Apply the concrete over the repair areas with a trowel and feather the concrete into the surrounding areas until the repair area is level, then allow the concrete to dry.

How to Fix Scratches in a Plastic Tile Floor

How to Remove Engineered Wood From a Wood Subfloor

Floor Repairs