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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

9.6

Water vapour permeance

ng/(Pa·s·m2)

≥ 170

331

Water ponding of original samples

No leakage

PassFootnote (1)

Tensile strength after UV exposure

% retention  of original 

≥ 90

108

Tensile strength after UV and heat aging

% retention  of original 

≥ 85

111

Water vapour permeance of UV and heat-aged sample

ng/(Pa·s·m2)

≥ 170

400

Water ponding of UV and heat-aged samples

No leakage

PassFootnote (1)