While concrete crack fillers are commonly used for repairing cracks in driveways, sidewalks, or small concrete structures, their effectiveness for foundation crack repair is debatable. The primary reason is the potential seriousness of foundation cracks. Structural cracks require a professional evaluation and may need more extensive repairs, such as underpinning or epoxy injections. Attempting to fix structural cracks using a concrete crack filler can be a temporary solution at best and may not address the underlying cause of the crack.
However, non-structural cracks that are narrower than 1/8 inch can potentially be repaired using a concrete crack filler. These cracks are typically less severe and can be safely repaired by homeowners themselves. It is important to note that proper assessment of the crack is crucial to determine whether it is suitable for DIY repair or requires professional intervention.
Steps to Repair a Non-Structural Foundation Crack Using Concrete Crack Filler
If the foundation crack is determined to be non-structural and suitable for DIY repair, here are the steps to follow:
- Prepare the Crack: Clean the crack thoroughly using a wire brush, removing any loose concrete or debris. A vacuum cleaner can also be used to ensure a clean surface.
- Choose a Suitable Product: Select a concrete crack filler specifically designed for foundation cracks. These products are typically available in hardware stores or online.
- Apply the Crack Filler: Follow the manufacturer’s instructions to apply the crack filler. Typically, it involves injecting the filler into the crack using a caulk gun or trowel. Ensure the crack is completely filled and smooth out the surface.
- Allow for Curing: Depending on the product, curing time can vary. Follow the guidelines provided by the manufacturer. Generally, it is recommended to wait at least 24 hours before subjecting the repaired area to any stress or pressure.
- Monitor the Crack: Regularly inspect the repaired crack to ensure the filler remains intact and no new cracks form. Address any issues promptly to prevent further damage.
While concrete crack fillers can be effective for repairing non-structural foundation cracks, it is crucial to accurately assess the severity of the crack before attempting a DIY repair. Structural cracks should always be evaluated and repaired by professionals to ensure the stability and safety of the building. If a non-structural crack is determined to be suitable for DIY repair, following the correct steps with a suitable concrete crack filler can help address the issue and prevent further damage to the foundation.