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Material Properties of the Membrane

Property

Unit

Requirement

Result Summer Grade

Result Winter Grade

Thickness variation

mm

Maximum 1.1 mm Minimum 0.9 mm (±10% of the manufacturer’s declared value)Footnote (1)

0.93

0.92

Hardness (Type 00 hardness gauge)

n/a

Report value

89.8

95.4

Water vapour permeance, Procedure B

ng/(Pa·s·m2)

Report value

1.45

1.65

Tensile strength at break: machine direction

kN/mFootnote (2)

Report value

12.40

12.85

Tensile strength at break: cross-machine direction

kN/mFootnote (2)

Report value

13.67

12.69

Watertightness Performance of the Membrane

PropertyFootnote (1) Footnote (2)

Requirement

Result Summer Grade

Result Winter Grade

Watertightness

No leakage

Passed

Passed

Water immersion/watertightness

No leakage

Passed

Passed

Heat aging/watertightness

No leakage

Passed

Passed

Chemical aging (NaoH)/watertightness

No leakage

Passed

Passed

Chemical aging (acetic acid)/watertightness

No leakage

Passed

Passed

UV aging/watertightness

No leakage

Passed

Passed

Low temperature flexibility at -20°C/watertightness

No leakage

Passed

Passed

Crack Bridging Resistance of the Membrane

PropertyFootnote (1)

Requirement

ResultFootnote (2) Summer Grade

ResultFootnote (2) Winter Grade

Crack bridging

30 cycles at -20°C

No visible cracking, blistering, peeling or other defects visible to the naked eye when lit with a 60-watt incandescent light at a 300-mm distance

Passed

Passed

30 cycles at 30°C

Water immersion/crack bridging

30 cycles at -20°C

No visible cracking, blistering, peeling or other defects visible to the naked eye when lit with a 60-watt incandescent light at a 300-mm distance

Passed

Passed

30 cycles at 30°C

Heat aging/crack bridging

30 cycles at -20°C

No visible cracking, blistering, peeling or other defects visible to the naked eye when lit with a 60-watt incandescent light at a 300-mm distance

Passed

Passed

30 cycles at 30°C

Chemical aging (NaOH)/crack bridging

10 cycles at -20°C

No visible cracking, blistering, peeling or other defects visible to the naked eye when lit with a 60-watt incandescent light at a 300-mm distance

Passed

Passed

10 cycles at 30°C

Chemical aging (acetic acid)/crack bridging

10 cycles at -20°C

No visible cracking, blistering, peeling or other defects visible to the naked eye when lit with a 60-watt incandescent light at a 300-mm distance

Passed

Passed

10 cycles at 30°C

UV aging/crack bridging

10 cycles at -20°C

No visible cracking, blistering, peeling or other defects visible to the naked eye when lit with a 60-watt incandescent light at a 300-mm distance

`Passed

Passed

10 cycles at 30°C

Peel Adhesion Performance of the Membrane Over ICF

PropertyFootnote (1)

UnitFootnote (2)

Requirement

ResultFootnote (3) Summer Grade

ResultFootnote (3) Winter Grade

Peel adhesion at 23°C

N/m

≥ 193

1 028

632

Peel adhesion at maximum interface temperature:Footnote (4) Footnote (5) 40°C

N/m

332

216

Peel adhesion at lowest interface temperature:Footnote (4) 5°C for the winter grade

N/m

n/a

770

Peel adhesion at lowest interface temperature:Footnote (4) 10°C for the summer grade

N/m

771

n/a

UV exposure on ICF substrate/rasping and cleaning of the ICF/peel adhesion with interface at 40°CFootnote (4) Footnote (6)

N/m

≥ 174 (90% of 193)

361

242

Heat aging on specimen/peel adhesion at 23°CFootnote (7)

N/m

617

588

UV exposure on specimen/peel adhesion with interface at 40°CFootnote (4) Footnote (7)

N/m

467

434

Peel Adhesion Performance of the Membrane Over Concrete

PropertyFootnote (1)

UnitFootnote (2)

Requirement

Result Summer Grade

Result Winter Grade

Peel adhesion at 23°C

N/m

≥ 175

673

750

Water immersion/peel adhesion at 23°C

N/m

≥ 158 (90% of 175)

1 575

247

Heat aging/peel adhesion at 23°C

N/m

367

452

UV aging/peel adhesion at 23°C

N/m

1 292

749

Tensile Strength Performance of the Membrane

PropertyFootnote (1)

UnitFootnote (2)

Requirement

ResultFootnote (4) Summer Grade

ResultFootnote (4) Winter Grade

Heat aging/tensile strength

kN/m

Summer grade ≥ 11.16 Winter grade ≥ 11.42 (90% of original value)Footnote (3)

13.74

13.57

Chemical aging (NaOH)/tensile strength

kN/m

12.97

14.02

Chemical aging (acetic acid)/tensile strength

kN/m

12.83

13.65

UV aging/tensile strength

kN/m

11.57

12.45

Performance Properties of the Lap Joint

PropertyFootnote (1) Footnote (2)

UnitFootnote (3)

Requirement

Result Summer Grade

Result Winter Grade

Water immersion/watertightness

n/a

No leakage

PassedFootnote (4)

PassedFootnote (4)

Heat aging/watertightness

n/a

No leakage

PassedFootnote (4)

PassedFootnote (4)

Water immersion/peel adhesion at 23°C

N/m

≥ 174 (90% of 193)Footnote (3)

676

401

Heat aging/peel adhesion at 23°C

N/m

546

384

UV aging/peel adhesion at 23°C

N/m

532

575

UV aging/peel adhesion with lap joint interface at 40°C

N/m

333

254

Lap joint shear at 23°C

kN/m

Summer grade ≥ 6.2 Winter grade ≥ 6.3 (50% of original tensile strength of the membrane)Footnote (5)

10.67

9.88

Heat aging/lap joint shear at 23°C

kN/m

8.27

8.19

Lap joint shear at 10°C

kN/m

8.76

n/a

Lap shear at –10°C

kN/m

n/a

8.76

Peel adhesion at 10°C

N/m

193

3 227

n/a

Peel adhesion at –10°C

N/m

n/a

3 555