Tempered Glass for Custom Steel Windows & Doors

Tempered glass is heat-treated to be four to five times stronger than annealed glass of the same thickness. When it does break, it fractures into small, blunt fragments rather than long sharp shards. Building codes classify this breakage pattern as safety glazing for doors, sidelites, and low-height windows, the locations where impact from a person is most likely. Studio Steel applies tempered glass as the baseline across every assembly, so that requirement is already met everywhere it could apply.

Tempered glass is standard on every Studio Steel custom assembly, across interior and exterior applications and across doors and windows alike.

Spec note: Tempered glass cannot be cut or drilled after processing. Final dimensions must be confirmed before fabrication. Studio Steel coordinates this as part of the custom specification process.

Tempered glass withstands temperature fluctuations better than standard annealed glass and is less prone to cracking from thermal stress, which is part of why it's suited to exterior applications where the glass surface faces direct sun exposure and temperature swings.

Tempered glass is not a security-rated or forced-entry-rated product on its own. Where forced-entry resistance, ballistic resistance, or a specific security rating is a project requirement, that's addressed through laminated glass or a laminated IGU (insulating glass unit), not tempered glass alone. See Laminated Glass for that specification path.

Because tempering doesn't alter the glass's optical clarity, tempered glass provides the same sightlines and light transmission as untempered glass of the same type and thickness.

Tempered glass is available clear, and it can also be processed with the same decorative textures and tints Studio Steel offers, including frosted, ribbed, and patterned finishes. See Decorative & Textured Glass for the full catalog of available textures and tints.

Safety glazing requirements for doors, sidelights, and low-height windows are set by the applicable building code and vary by jurisdiction and application. Confirm specific code requirements with your local building department or code official during project planning.

Steel is a non-combustible material. It does not burn and does not add fuel load to a fire, a basic property of the material itself, separate from any specific fire rating or certification. Where a project has fire-rating requirements, confirm applicable code requirements with your local building department and the Studio Steel team.

Tempering is a treatment applied within single pane, double pane (IGU), and triple pane builds alike, as well as within laminated assemblies. See Insulated Glass: Single, Double & Triple Pane for pane-count specification, and Laminated Glass for combining tempered with a PVB interlayer.

Tempered glass is used across commercial offices, schools, hospitals, retail, multifamily, and residential projects, anywhere a door, sidelite, or low-height window calls for safety glazing.