FACTORY LIGHTING BIAS
Under factory lighting conditions, many defects were invisible. Under natural daylight on the building, defects became obvious.
A leading London developer commissioned a high-profile commercial high-rise and sourced over 1,180 façade glass panels from a well-known overseas supplier. Based solely on the supplier's in-house quality control reports claiming full compliance, the project proceeded to shipment and installation
Upon delivery and during initial installation, multiple critical defects emerged:
Under factory lighting conditions, many defects were invisible. Under natural daylight on the building, defects became obvious.
Supplier testing focused on basic compliance, not comprehensive quality assessment.
Reliance on supplier in-house reports with no independent verification.
No one objectively assessed optical distortion, surface quality, or real-world performance before shipment.
