Glass shelves’ weight capacity depends primarily on thickness, type, size, and support configuration. Standard 1/4-inch tempered glass shelves typically support 10-15 pounds per square foot, while 3/8-inch shelves may hold 30-40 pounds per square foot with proper support. Tempered glass offers approximately four times the strength of regular annealed glass. For optimal load-bearing capacity, shelves should be supported along the entire perimeter or with brackets spaced no more than 24 inches apart. Custom glass fabricators can provide precise weight ratings for specific dimensions and applications. Always select glass thickness based on intended use—decorative items require less support than books or kitchen items—and consult professional guidelines for safe installation.
