Upgrade your bathroom and go for a more modern look and feel with quality glass shower doors and much more. Give us a call to learn more about our services in the Durham Region and GTA. Superior Glass & Mirror is a family-owned and operated company with more than 20 years of experience. Providing glass shower doors in Oshawa, we service the Durham Region and the Toronto area. We are committed to excellence and take pride in our workmanship and services.