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Results of Testing the Air Leakage Rate of the Product
Type of Wall Tested	Maximum Air Leakage Rate,^{Footnote (1)} L/(s·m²) @ 75 Pa ΔP	Result
Masonry walls (see Figures 1 and 2 in Appendix A of this Report)	≤ 0.05^{Footnote (2)}	0.0088 L/(s·m²)^{Footnote (2)}
Exterior gypsum/metal stud walls (see Figures 3 and 4 in Appendix A of this Report)	≤ 0.05^{Footnote (2)}	0.0096 L/(s·m²)^{Footnote (2)}

Notes:

Footnote 1

The air leakage rate of the specimens is determined after the structural wind loading (Q50 = 0.6 kPa) in order to represent structural aging of the air barrier system. The air barrier system was subjected to a loading schedule involving one-hour sustained positive and negative pressure set at 0.60 kPa, 2 000 cycles of positive and negative pressure set at 0.80 kPa, and a wind gust of positive and negative pressure set at 1.2 kPa.

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Footnote 2

The air leakage rate requirement is based on the following Table for Rate of Permissible Air Leakage developed by CCMC/NRC with input from an industry consortium. The following table is deemed to meet the intent of the NBC 2010 with regard to air barrier system performance.

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Table for Rate of Permissible Air Leakage
Water Vapour Permeance (WVP) of Outermost Layer of Wall Assembly (ng/Pa·s·m²)	Maximum Permissible Air Leakage Rate (L/s·m²) @ 75 Pa ΔP
15 < WVP ≤ 60	0.05
60 < WVP ≤ 170	0.10
170 < WVP ≤ 800	0.15
> 800	0.20

Durability of Air Barrier System Components

Table 4.1.2 Results of Testing of Durability of Components in the Product
Component	Requirement	Result
"Insulthane® Extreme" plyurethane insulation o	Air permeance before and after aging (ASTM D 726-84): < 10% increase	Accepted^{Footnote (1)}
"Insulthane® Extreme" plyurethane insulation o	Thermal resistance after heat aging and weathering: 90% retention	Passed
Transition membrane: "Blue Skin SA®" by Henry® Company	Physical properties before and after aging: 85% retention	Passed
Sealant at membrane/foundation junctions: "BES 925" sealant by Henry® Company	Complies with CAN/CGSB-37.29-M89	Passed
Sealant around warm side of window and door frames: backer rod foam and "BES 925" sealant	Complies with CAN/CGSB-19.0-M77	Passed

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Durability of Air Barrier System Components