Façade geometry
Frequent corners, reveals, openings and panel cuts can increase the rate by 10–25%, typically £25–£75/m².
Access strategy
Mast climbers, scaffolding alterations or high-level logistics can add £20–£60/m² depending on building height and elevation continuity.
Support system
Heavy-duty brackets, deep cavities or poor substrate tolerances can add £30–£90/m² for enhanced rails, brackets and setting out.
Fire performance
Non-combustible insulation, tested cavity barriers and complex fire-stopping interfaces commonly add £15–£45/m².
Material specification
Bespoke colours, anodised finishes, large-format panels or natural materials can increase supply costs by £20–£150/m².
Programme constraints
Accelerated sequencing, winter working and fragmented releases can increase installation costs by 8–20%.