Identify the location of the crack: Start by inspecting the foundation walls for cracks. Look for areas where water is entering the basement or areas where there is moisture on the walls or floor. You may need to remove any drywall or paneling to fully inspect the walls.
Determine the severity of the crack: Small cracks that are less than 1/8 inch wide are usually not a cause for concern, but larger cracks that are wider than 1/8 inch may require professional repair.
Clean the area around the crack: Use a wire brush to remove any loose material and debris from around the crack. This will ensure that the repair material adheres properly to the surface.
Fill the crack with an epoxy or polyurethane injection: For small cracks, you can fill them with a two-part epoxy or polyurethane injection. These materials are strong and will bond to the concrete, preventing further water infiltration. Follow the manufacturer's instructions carefully when applying these materials.
Apply hydraulic cement for larger cracks: For larger cracks, hydraulic cement can be used to fill them. Hydraulic cement expands as it dries, which helps to seal the crack and prevent further water infiltration.
Monitor the crack: After the repair has been made, monitor the crack to ensure that the leak has stopped. If you continue to have issues with water leaking through the foundation, contact a professional to inspect the problem.
In summary, identifying and fixing cracks in a foundation that has water leaking through is an important step in preventing water damage to your home. Small cracks can be filled with epoxy or polyurethane injections, while larger cracks require hydraulic cement. If you're unsure about the severity of the crack or don't feel confident in making the repair yourself, contact a professional for help.