I have 30 years of experience listening to the sorrowful lamentations from homeowners just like you that hired a contractor ...

DIY repair methods include using epoxy injection ... shrinkage of the concrete or minor temperature changes. Hairline cracks and minor vertical cracks typically fall into this category and ...

Use concrete epoxy with fiberglass tape ... I can see most of those methods failing and the crack reopening. After our text conversation started to get a little contentious, I decided to step ...