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I jsut had a new house built and the concrete foundation had a settling crack that ran from the casement window to the floor. THe only way we resolved it was to hire a local basement waterproofing company (Crack-X - Natick, MA.) who utilized polyurethane injection to seal/fill the crack from the floor up to the window. It was rouhgly $700.00 for the job. Some DIY Kit info I found useful can be found at website:
https://www.youtube.com/watch?v=dggJsJ2f1dU
Hope this is useful.
Thanks.
-- Jeff