Qualifications
So what does it take to become a glazier, other than a high tolerance for the scent of window cleaner?
Becoming a glazier almost always means learning the craft through an apprenticeship, which takes two to four years. In helping full-fledged glaziers do their jobs, you learn the techniques, terminology, and safety issues connected to the job. Plus you'll see just how physical the job is.
As a glazier your motto should be "measure twice, cut once." You need to be focused, very detail-oriented and, dare we say it, sharp. Glass isn't cheap. Broken glass costs twice as much. According to legend (source), one broken panel could cost nearly half a million to replace. Careful should be your middle name.
Some glaziers may want to earn a Construction Management certificate or get an associate's degree in construction technology (or similar program) to improve and broaden their skills a bit. In some rural areas, glaziers may need other construction talents such as tiling or trim work in order to stay busy.