The standard thickness for shower doors ranges from 3/8-inch (10mm) to 1/2-inch (12mm) tempered glass, with selection depending on door size, configuration, and desired aesthetic. Framed shower doors typically use 3/8-inch glass, which provides adequate strength while remaining cost-effective, as the frame provides structural support. Frameless shower doors require thicker 1/2-inch glass to ensure stability and durability without frame reinforcement. For very large shower enclosures or doors exceeding 36 inches in width, 5/8-inch (16mm) glass may be necessary. Building codes mandate tempered safety glass for all shower applications, identified by permanent etching in the corner. Professional installation is recommended to ensure proper mounting, alignment, and hardware selection that complements the chosen glass thickness.
