Anchor hooks to rafters (not just cladding), size rail spans for panel dimensions and snow load, torque clamps to 12-16Nm per datasheet, and seal every penetration with EPDM washers.
Anchor hooks to rafters (not just cladding), size rail spans for panel dimensions and snow load, torque clamps to 12-16Nm per datasheet, and seal every penetration with EPDM washers.