Overhead Glazing Design: Laminated Glass for Canopies and Skylights
Glass above occupied areas needs particular attention to breakage retention, support, drainage and maintenance. Canopies and skylights may look similar, but their thermal, water-management and framing conditions can differ significantly.
Define loads and support conditions
Provide panel geometry, slope, edge support, point fixings, design wind, snow, maintenance and other imposed loads. Include load combinations and the applicable design standard.
The glass calculation should address intact and required broken-state scenarios. Ponding and blocked drainage must be considered by the project team where relevant.
Use a deliberate laminated make-up
Laminated glass is commonly used to retain fragments after breakage. The required plies, heat treatment and interlayer depend on loads, support, temperature, edge exposure and the required retention period.
Refer to glass canopy, skylight glass and the interlayer guide.
Coordinate thermal and moisture performance
Enclosed skylights may require insulated glass, Low-E coating, warm-edge spacers and condensation analysis. Sealant compatibility, weep paths, edge cover and water drainage need system-level design.
For exposed laminate edges, confirm interlayer suitability, sealing details and maintenance conditions.
Plan installation and safe replacement
State panel orientation, lifting points, temporary support, access and replacement sequence. Large or shaped overhead panes may require dedicated lifting frames and delivery planning.
- Structural drawings and loads
- Slope and drainage details
- Glass and interlayer make-up
- Thermal and solar targets
- Broken-state requirement
- Access, cleaning and replacement plan
Prepare a project enquiry
For a project-specific review, send drawings, panel schedules, dimensions, quantities, required standards, destination and programme through the Archivitro contact page. You can also browse our technical data hub and architectural glass projects.