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Results of Testing the "HP+™ XR and XR-S Series – Air Barrier System"
Type of Wall (see Figures 1 to 4 in Appendix A of this Report)		Air Leakage Requirement (ULC-S742 Classification)	Result
		Air Leakage Requirement (ULC-S742 Classification)	Air Leakage Rate After Wind Loading at 75 Pa ΔP	Air Leakage Rate After Wind Loading at −20°C and at 75 Pa ΔP
"HP+™ XR Series"^{Footnote (1)} ^{Footnote (5)}	metal girt	A1^{Footnote (3)} ≤ 0.05 L/(s·m²)	0.020 L/(s·m²)	0.030 L/(s·m²)^{Footnote (2)}
"HP+™ XR Series"^{Footnote (1)} ^{Footnote (5)}	wood girt		0.044 L/(s·m²)	0.047 L/(s·m²)^{Footnote (2)}
"HP+™ XR-S Series"	metal and wood girt		See note^{Footnote (4)}	See note^{Footnote (4)}

Notes:

Footnote 1

The air leakage rate of the wall assemblies was determined after the specimens were exposed to structural aging. Aging of the ABS was conducted considering the target sustained wind pressure difference of Q_1/50 = 1 000 Pa (P₁) and a maximum building height of 12 m for Part 9 buildings. Therefore, the wall assemblies were subjected to the following loading schedule:

one-hour sustained positive and negative pressure set at 1 000 Pa (P₁);
2 000 cycles of positive and negative pressure set at 1 460 Pa (P₂);
wind gust of positive and negative pressure set at 2 180 Pa (P₃); and
deflection loading at 1 460 Pa held for ten seconds.

Return to footnote 1 referrer

Footnote 2

The air leakage rate was determined in accordance with ASTM E 1424, "Standard Test Method for Determining the Rate of Air Leakage Through Exterior Windows, Curtain Walls, and Doors Under Specified Pressure and Temperature Differences Across the Specimen," at an air temperature of −20°C to verify any deformation causing air leakage at low temperature.

Return to footnote 2 referrer

Footnote 3

The air leakage rate requirement is based on Table 4.1.1.2, Permissible Air Leakage Rate, developed by CCMC/NRC with input from an industry consortium. The table is deemed to meet the intent of the NBC 2010 and NBC 2015 with regard to ABS performance. Considering that the maximum air leakage rate of the tested wall specimens (see Table 4.1.1.1) is lower than 0.05 L/(s·m²), the water vapour permeance of the outermost layer, in this case, "Neopor®," can be between 15 and 60 ng/(Pa·s·m²) or higher.

Return to footnote 3 referrer

Footnote 4

The "HP+™ XR-S Series" assembly, consisting of the "HP+™ XR Series" with a 12.5 mm thick (½ in.) wood sheathing (OSB or plywood) was not tested. However, it is deemed to meet the air leakage requirement.

Return to footnote 4 referrer

Footnote 5

The tested wall assemblies did not lose their integrity during the wind pressure loading.

Return to footnote 5 referrer

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

Results of Durability Testing of Components in the "HP+™ XR and XR-S Series – Air Barrier System"
Property		Requirement	Result
Spray-applied polyurethane foam insulation	"WALLTITE ® v.3" by BASF Canada Inc.	air permeance before and after aging (ASTM D 726): < 10% increase	Passed
Spray-applied polyurethane foam insulation	"WALLTITE ® v.3" by BASF Canada Inc.	thermal resistance after heat aging and weathering (ASTM C 518 90% retention	Passed
Transition membrane	"3M™ Air and Vapour Barrier 3015" by 3M Canada Company	physical properties before and after aging: 85% retention	Passed
Transition membrane	"HP+™ Flash" a liquid flashing by BASF used in conjunction with "Tyvek® HomeWrap™ Breather Type Sheathing Membrane"	physical properties before and after aging: 85% retention	Passed
Sealant	"MasterSeal® NP1™" by BASF	complies with ASTM C 920	Passed

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