Answered all the questions we had, and if he was unsure he said he would ask somebody who worked with flat roofs. He was on time.
He was very polite, professional and knowledgeable
The Guardian crew started work on the siding on one side of our house before 8 AM and actually were working until after 9 PM to complete the job in one day. It was an amazing amount of work for 3 people, and they did an excellent job!