Glass railings look delicate, but they must hold a person leaning or falling against them. Choosing the right glass is a safety decision first and a style decision second.
Always tempered (toughened) glass
Tempered glass is heat-treated to be several times stronger than ordinary glass. If it does break, it shatters into small rounded pieces instead of long sharp shards. Ordinary float glass should never be used for a railing.
Common thicknesses
| Thickness | Typical use |
|---|---|
| 10mm | Post-and-glass systems where posts and clamps support the panels; most balconies and staircases. |
| 12mm | Frameless spigot or standoff systems, taller panels, and high-traffic areas. |
| 15mm+ or laminated | Fully frameless systems with no top rail, commercial buildings and large spans. |
The right thickness depends on panel height, width, how it is fixed and how much load it must carry. Wider spans between fixings need thicker glass.
Tempered vs laminated glass
Laminated glass is two sheets bonded with a plastic interlayer. If one sheet breaks, the panel stays in place. Many building codes overseas require laminated glass where the glass alone prevents a fall. For Nigerian homes with a continuous top handrail, thick tempered glass is the common choice; for fully frameless or high-rise balconies, laminated is worth the extra cost.
Glass colours
Thickness and colour are separate choices — you can get 10mm or 12mm in clear, black, grey, bronze or frosted. See black vs clear glass for help choosing.
Edges and fixings
- Edges should be polished, not raw — safer to touch and better looking.
- Holes for standoffs must be drilled before tempering. Tempered glass cannot be cut or drilled afterwards.
- Use rubber gaskets in clamps so glass never touches metal directly.
Not sure what your project needs? Send us the height and length on WhatsApp. Also read frameless vs post glass railings and handrail height and safety.
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