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Table 4.1.1 Results of Testing the Performance Properties of the Product
Property Unit Requirement Result
Tensile strength original sample N/mm ≥ 3.5 26.4
Water vapour permeance ng/(Pa·s·m2) 170 ≤ WVP ≤ 1 400 429
Water ponding No leakage No water leakage
Tensile strength after UV exposure % ≥ 90% of original 87 Footnote (1)
Tensile strength after heat aging of UV exposed specimens % ≥ 85% of original 85
Water vapour permeance of UV exposed and heat-aged specimens ng/(Pa·s·m2) 170 ≤ WVP ≤ 2 900 447
Water ponding No leakage No water leakage