Spec decisions.
Glass thickness: 12mm tempered laminated is the residential standard for typical panel sizes (up to 1.2m wide). Larger panels or higher-traffic applications use 15mm or 21mm. All glass must be tempered for code compliance.
Anchoring: channel base shoe (continuous aluminum channel embedded in or surface-mounted to the stair stringer or floor) is the residential standard. Standoff (button-fix to a structural element) reads cleanest but costs more and requires precise structural integration.
Top rail: required by code in many jurisdictions for handhold compliance. Optional in jurisdictions that accept the glass top edge as the hand-grip. When required, can be slim aluminum or wood matching adjacent finishes.
Integrated lighting: LED strip in the channel base shoe casts light up through the glass for dramatic effect. Useful in modern residential where the stair becomes architectural feature.
Common questions.
- How thick should glass be for a stair railing?
- 12mm tempered laminated is the residential standard for typical panel sizes. Larger panels or higher-traffic applications use 15mm or 21mm. All glass must be tempered for code compliance.
- Do I need a top rail on frameless glass railing?
- Depends on local code. Many jurisdictions require a separate handrail; some accept the polished top edge of the glass as the hand-grip. Confirm with local code review during design.
- Can frameless glass railing fail?
- Tempered laminated glass is highly durable but can fail in two ways: spontaneous breakage of tempered glass (rare, usually from nickel sulfide inclusions) is contained by the laminated interlayer; and edge damage compromises the glass. The laminated construction is the safety mechanism: even if the glass cracks, the interlayer holds the panel together.
Project in motion
Specifying frameless glass railing?
We source frameless glass railing in standoff and channel systems.