If you have concrete in your home, you may have noticed holes forming due to strong weather or rodents. Most of these holes can be easily fixed with a quality mortar mix, although you should use one with a crushed stone aggregate to fill holes more than 1 inch (2.5 cm) deep. It is important to treat the holes as soon as you find them to prevent water and rodents from further damaging the concrete and entering your home. Before attempting to fill a hole, it is important to clean up any loose concrete and other debris.
Then mix the mortar, fill the hole and level it so that it blends in with the surrounding structure. Concrete takes time to cure, so it is important to keep the patch moist for several days for a stronger hold. Patching concrete holes is a simple weekend project that can help protect your home for decades. Holes 1 inch or deeper require a mixture of concrete with coarse aggregate of crushed stone, which adheres well to existing concrete.
Shallower holes need a mixture of sand. Whichever type you use (both are available at home care centers), follow these steps:
- Wet the hole first
- Pack the cement and level it
- Smooth the surface with a spatula or trowel
- Keep the area moist until the patch heals