A: We strongly recommend against it. More than likely waterproofing measures were taken when the home was built, but have failed. Outside excavation repair does not address the hydrostatic water enveloping the foundation or water already trapped within the basement walls. It is extremely expensive, time consuming, and destructive to the landscaping and exterior structures such as the walkways, patio and driveway. Our interior waterproofing system can be installed in a few days with considerable savings as compared to exterior waterproofing. It is less disruptive to the home and household, and carries a transferable, life of the structure warranty.