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Fibreboard Properties

Property

Unit

Requirement

Result

Dimensions and tolerances  - thickness

%

± 9% of 12.5 mm (the declared value)

12.2

Dimensions and tolerances  - length

mm/m

0 to –5

Pass

Dimensions and tolerances  - width

mm/m

0 to –5

Pass

Straight edge

mm/m

2.0

1.6

Water vapour permeance

ng/(Pa∙s∙m2)

Maximum 60

9.6

Air permeance at 75 Pa pressure difference

L/(s∙m2)

Maximum 0.02

< 0.001

Water absorption by volume

%

Maximum 10

5.7

Linear moisture expansion

%

Maximum 0.5

0.1

Thermal resistance for a 25-mm-thick panel

(m2∙K)/W

Minimum 0.410

0.55

Transverse load at rupture

N

Minimum 62

89.2

Tensile strength

parallel to the surface machine direction

kPa

Minimum 1 000

2 874

parallel to the surface cross-machine direction

kPa

Minimum 1 000

2 228

Tensile strength - perpendicular to the surface

kPa

n/a for Type II, Class 7

38.8

Compressive strength at 10% deformation

kPa

n/a for Type II, Class 7

255.8

Low-emissivity Material Properties

Property

Unit

Requirement

Result

Applicable standard - CAN/CGSB-51.33-M89

-

Pass

Pass

Emissivity

-

Report value

0.04

Water vapour permeance

ng/(Pa·s·m2)

≤ 60

2.49

Adhesion strength

N

Report value

3.70

Durability

Property

Unit

Requirement

Result

Emissivity after weathering and heat aging

-

within 5% of original value

No measurable change

Water vapour permeance after weathering and heat aging

ng/(Pa·s·m2)

≤ 60

  • 9.48 ("Enermax™")
  • 1.26 (foil alone)

Adhesion strength after weathering and heat aging

%

> 85% of original value

89

Heat Transfer Control Performance

Property

Unit

Requirement

Result

Room-side air temperature

°C

Report value

20.5

Weather-side air temperature

°C

Report value

–34.1

Wall thermal resistance

m2·K/W

Report value

4.24 Footnote (1)

Thermal resistance of the wall including weather- and room-side air film data obtained from testing

m2·K/W

Report value

4.43 Footnote (2)

Design thermal resistance of the wall including interior and exterior air film data from ASHRAE Handbook Footnote (3)

m2·K/W

Report value

4.39 Footnote (4)

Contribution in the thermal resistance of the wall due to the furred-air space assembly Footnote (5)

m2·K/W

Report value

0.5

Water Vapour Diffusion Control ("Enermax™ (thermal insulation)")

Property

Unit

Requirement

Result

Water vapour permeance

ng/(Pa·s·m2)

≤ 60

1.50