Last Spring, had a new central air system installed. The spot where they drilled through the foundation to run the hoses to the back of our house started to crack. Within 2 months, it left an 24" vertical crack going right into the soil. Nusite was the third company to come out and gave a good price, and were located close by in Richmond HIll (in case we had problems later). They had to dig out a small part of our yard to get to the crack, but sealed it and didn't leave a mess afterwards. They did the work on time and didn't try to charge for anything above what they estimated. It's been about 5 months now and has't leaked yet, crossing my fingers!