We had a crack in our foundation about 10 years ago. Luckily it was before we developed the basement so all we had to do was take out the vapor barrier and insulation to uncover it. Every time it rained, water would trickle in from the crack. There was also a huge issue with the grading in our backyard under the deck, so that all had to come out and we re-graded.
Once the grading issue was corrected, we had Basement Systems come in. They drilled into the crack and filled it with something. I have no idea what it was, but 10 years later we haven't had any issues. I guess it depends on what you mean by a 'break'? Either way, I'd recommend them.
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