We had water for over 20 years, we had two other companies over the years attempt to stop the water from coming in but it still leaked. I called Green Mountain in 2010. Their owner, Mike came over and explained in plain English describing what they were going to do. 3 days later they were done with minimal disturbance to us! We have had a dry basement ever since and have recommended them to several people. We are extremely happy with our now usable space!