A Glazier is a tradesperson who installs glass products from a single pane to dual glazed glass called sealed units. Glaziers are certified to install aluminum storefronts, curtainwalls, glass doors, mirrors, switch glass, shower doors and enclosures, door hardware, unitized curtainwalls, pre-glazed windows and many other products. The members of this union have undergone a 4-year apprenticeship specializing in the glazing industry. We have proudly served St. Louis's Glass and Glazing needs since 1899.