I've tried to repair cracks in our basement a few times. But failed.At last heared about BasementBirds. There are also new urethane grouts being developed that have structural bonding agents as well. These will allow the 2 parts of the foundation wall to be fused back together all the way through to the exterior. I would recommend it if you have a leaking crack in your foundation an expert in the field be called. Be careful of the high pressure sales companies and mega-waterproofing companies because they like to use scare tactics in making you think you need more than you do.