How does a Glass Curtain Wall interface with balconies parapets and building envelope transitions

Transitions—where curtain walls meet balconies, parapets, terraces and roof edges—are high-risk details that require careful design to ensure waterproofing, thermal continuity and aesthetic resolution. Use dedicated transition profiles and thermally broken metal copings to bridge the curtain wall to parapets while maintaining drainage paths and preventing thermal bridging. Flashing, continuous membrane interfaces and back-pan systems are commonly used to separate structural slab edges from glazing pocket areas; ensure these are accessible and serviceable. Balcony balustrade attachments should be independently supported where possible, or designed with isolated anchors that do not compromise curtain wall seals. Expansion joints must be coordinated across slab lines and façade modules so movement is absorbed without stressing glazing seals. Metal copings and trim should be specified with compatible finishes and tolerances to avoid staining or galvanic corrosion at junctions. Early coordination between structural, waterproofing and façade teams avoids onsite rework; mockups including parapet caps, metal flashings and glazing demonstrate constructability. For metal coping and trim solutions compatible with modern curtain wall interfaces, consult fabricators and suppliers such as https://prancedesign.com/best-glass-curtain-wall-selection-guide-prance/ who can advise on material choices and attachment methods. Thoughtful transition detailing prevents leaks and preserves the façade’s visual integrity.