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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
Tensile strength	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

Notes:

Footnote 1

Excludes room- and weather-side air film.

Return to footnote 1 referrer

Footnote 2

This value takes into account the measured air film conductance from the room and weather side, 7.11 W/m²·K (corresponding resistance is 1/7.11) and 22.10 W/m²·K (corresponding resistance is 1/22.10), respectively.

Return to footnote 2 referrer

Footnote 3

ASHRAE stands for American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.

Return to footnote 3 referrer

Footnote 4

This value takes into account the interior and exterior air film conductance data from ASHRAE Handbook, 8.29 W/m²·K (cor- responding resistance is 1/8.29) and 34.00 W/m²·K (corresponding resistance is 1/34.00), respectively. This is the design thermal resistance to be used for Code compliance.

Return to footnote 4 referrer

Footnote 5

The furred-air space assembly consists of the low-E material within a sealed air space with horizontal furring. This thermal contribution is based on data obtained from testing the wall shown in Figure 1 (full wall) and the same wall without the furred-air space assembly (base wall). The contribution in the thermal resistance of the full wall due to the furred-air space assembly is the difference between the thermal resistance of the full wall and the base wall.

Return to footnote 5 referrer

Water Vapour Diffusion Control ("Enermax™ (thermal insulation)")
Property	Unit	Requirement	Result
Water vapour permeance	ng/(Pa·s·m²)	≤ 60	1.50

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