Glass Railing Top Cap
A metal profile (typically aluminum or stainless steel) installed on the top edge of glass railing panels, providing hand grip, edge protection, and enhanced structural rigidity.
Technical Details
Top caps serve multiple functions: they protect the exposed glass edge from chipping, provide a graspable surface for code-required handrails on stairs, stiffen the glass panel against lateral loads, and create a finished aesthetic. Top caps are available in round, square, flat, and custom profiles. They are secured with compression fittings, adhesives, or mechanical fasteners. For guards (non-stair railings), top caps are optional but recommended for performance and longevity.
Frequently Asked Questions
Is a top cap required on glass railings?
For stair railings, the IBC requires a graspable handrail (34"-38" height, 1.25"-2" circular cross-section). A properly sized top cap can serve this function. For level guards (balcony railings), a top cap is not code-required but is recommended for edge protection and structural rigidity.
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