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Results of Testing the Product to the Technical Guide for Sheathing Membrane, Breather-Type

Property

Unit

Requirement

Result

Sheet width

Tolerance: –6 mm of specified width

Pass

Tensile strength

N/mm

3.5

3.9

Water vapour permeance

ng/Pa·s·m2

≥ 170

534

Water ponding of original samples

No leakage

PassFootnote (1)

Tensile strength after UV exposure

% retention of original

≥ 90

107

Tensile strength after UV and heat aging

% retention of original

≥ 85

104

Water vapour permeance of UV and heat-aged sample

ng/Pa·s·m2

≥ 170

1 293

Water ponding of UV and heat-aged samples

No leakage

PassFootnote (1)