Using Terraburst to trenchlessly replace my compromised sewer pipe was the most inexpensive and quickest professional method I found in Calgary. Tree roots had pierced over 4 feet of the "no-corode" sewer pipe. Since failure had not occurred yet, Colin explained that this pipe was still suitable for the trenchless replacement. I booked the date, the 4-man crew arrived as scheduled, and after a 12-hour day, they finished the job including clean-up. I was left with a new sewer pipe (with a back-water check valve), a new cemented hole in my basement and a small, shallow hole in my front yard. This is a very professional group of people, from the owner Colin to the crew, who were hard-working, knowledgeable, and expert at their jobs. I only had to replace some sod into the newly-compacted hole.