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Results of Testing the Performance Requirements of the Product

Property

Unit

Requirement

Result

Sheet width

Tolerance: –6 mm of specified width

Pass

Tensile strength

N/mm

> 3.5

5.44

Water vapour permeance

ng/Pa·s·m2

> 170

3 420

Water ponding

No leakage

PassFootnote (1)

Tensile strength after UV exposure

% retention of original

> 90

99.2

Tensile strength after UV and heat aging

% retention of original

> 85

105.8

Water vapour permeance of UV and heat-aged sample

ng/Pa·s·m2

> 170

3 547

Water ponding of UV and heat-aged sample

No leakage

PassFootnote (1)