Ken Briesemeister has to be one of the smartest roofing guys in the business. While he was more expensive than his competitors I had no doubt I was paying for quality work. I had a small leak in the upstairs Master Bathroom that I suspected was coming from a roof vent. Ken found the exact problem before starting the work and identified poor work done on the roof when we had it replaced after a bad storm. Based on other issues we had from that event I had no doubt the contractor that did that work was not a professional roofer. Ken replaced the flashing around that vent as well as two others with the same "backwards" installation of venting that would likely cause me the same problem in the future. His workman showed up on time, were courteous and professional and cleaned up very well after themselves. Six months later and the problem has not re-appeared!