Why “Tested Systems” Still Fail on Site
The Confidence of Certification A tested façade system carries authority. It suggests validation, reliability, and reduced risk. And in controlled conditions, that assumption holds true. But buildings are not controlled environments. The Gap Between Testing and Reality Façade testing is conducted under specific conditions - defined parameters, controlled variables, and precise assembly. On site, those conditions change. Installation tolerances vary. Interfaces differ. Environmental conditions fluctuate. Even small deviations from tested configurations can alter performance significantly. The Complexity of Real-World Conditions Unlike laboratory testing, real buildings are subject to: Variable wind pressures Irregular structural movement Changing temperature cycles Human factors during installation These variables introduce uncertainty - something testing alone cannot fully eliminate. When Assumption Replaces Verification The ...