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Results of Testing of Air Leakage Rate of the Product After Wind Loading
Wood-Frame Walls		Requirement	Result
Original "CABS" (25-mm "FOAMULAR® CodeBord®" XPS with foam gaskets beneath XPS panel joints)	Specimen no. 1 – opaque wall	Air leakage rate^{Footnote (1)} at 75 Pa ΔP ≤ 0.05 L/(s·m²)	0.048 L/(s·m²)^{Footnote (3)}
	Specimen no. 2 – continuity at penetrations
	Specimen no. 3 – continuity at foundation and brick straps
Hybrid "CABS" (20-mm "FOAMULAR® CodeBord®" XPS(R4) with exterior taped seams)	Specimen no. 1 – opaque wall	Air leakage rate^{Footnote (2)} at 75 Pa ΔP ≤ 0.05 L/(s·m²)	0.042 L/(s·m²)^{Footnote (3)}
	Specimen no. 2 – continuity at penetrations, foundation, brick straps	Air leakage rate^{Footnote (2)} at 75 Pa ΔP ≤ 0.05 L/(s·m²)	0.042 L/(s·m²)^{Footnote (3)}
Hybrid "CABS" (25-mm "FOAMULAR® CodeBord®" XPS(R5) with exterior taped seams)	Specimen no. 1 – opaque wall	Air leakage rate^{Footnote (1)} at 75 Pa ΔP ≤ 0.05 L/(s·m²)	0.040 L/(s·m²)^{Footnote (3)}
	Specimen no. 2 – continuity at penetrations, foundation, brick straps	Air leakage rate^{Footnote (1)} at 75 Pa ΔP ≤ 0.05 L/(s·m²)	0.040 L/(s·m²)^{Footnote (3)}

Notes:

Footnote 1

The air leakage rate of the specimens is determined after structural aging of the air barrier system. Aging of the air barrier system was conducted to qualify it for a design structural wind load of Q50 = 0.60 kPa (Original "CABS") and Q50 = 0.55 kPa (Hybrid "CABS"), the Q50 being 1-in-50 year wind pressure return period from NBC climatic data in Appendix C. The air barrier system was subjected to a loading schedule involving one-hour sustained positive and negative pressure at the Q50 value (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. The air leakage rate was determined in accordance with ASTM E 1424-91(2008), "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 leakage at low temperatures.

Return to footnote 1 referrer

Footnote 2

The air leakage rate of the specimens is determined after structural aging of the air barrier system. Aging of the air barrier system was conducted to qualify it for a design structural wind load of Q50 = 0.75 kPa (NBC climatic data in Appendix C) for a 1-in-50 year return period. The air barrier system was subjected to a loading schedule involving one-hour sustained positive and negative pressure set at 0.75 kPa, 2 000 cycles of positive and negative pressure set at 1.210 kPa, and a wind gust of positive and negative pressure set at 1.810 kPa. The air leakage rate was determined in accordance with ASTM E 1424-91(2008) at an air temperature of −20°C to verify any deformation causing leakage at low temperatures.

Return to footnote 2 referrer

Footnote 3

The air leakage performance results in a Classification A1 as per CAN/ULC-S742-11, "Standard for Air Barrier Assemblies – Specification." The air leakage rate criteria is based on the permissible air leakage rates shown in Table 4.1.2, which are considered to be in accordance with the NBC in regards to air barrier system performance and drying potential of the wall assembly

Return to footnote 3 referrer

Permissible Air Leakage Rates
Drying Potential Based on Water Vapour Permeance (WVP) of Outermost Layer of Wall Assembly (ng/Pa·s·m²)	Maximum Permissible Air Leakage Rates (L/s·m²) @ 75 Pa
15 < WVP^{Footnote (1)} ≤ 60	0.05^{Footnote (1)}
60 < WVP ≤ 170	0.10
170 < WVP ≤ 800	0.15
> 800	0.20

Results of Testing of Durability of Components of the Product
Component		Requirement	Result
Original "CABS"	"FOAMULAR® CodeBord®"	Air permeance before and after aging (ASTM D 726-84) < 10% increase	Passed^{Footnote (1)}
	"FOAMULAR® CodeBord®"	Thermal resistance after heat aging and weathering 90% retention	Passed
	"FoamSealR™" polyethylene sealing gasket	Oxidative induction time (OIT) ≥ 30 minutes	Passed
	proprietary spray-in-place foam sealant	Air leakage after aging ≤ 0.5 L/s at 75 Pa ΔP	Passed
	caulking sealant for protection from weather	Meets ASTM C 920-14	Not evaluated for durability of air leakage performance
Hybrid "CABS"	"FOAMULAR® CodeBord®"	Air permeance before and after aging as per ULC S741 aging (i.e., 28 cycles of UV exposure + heat aging 772 h at 50°C) < 10% increase	Passed
	"JointSealR® Foam Joint Tape"	See CCMC 14003-R	Passed
	"FlashSealR® Foam Flashing Tape"	See CCMC 14003-R	Passed

Wind Load Resistance for the Product
XPS Panel	Attachment Schedule	Wind Load Limit (Q 50)	Deflection Beyond Framing (Max.)
20-mm "FOAMULAR® CodeBord®"	Nails with 25-mm (1-in.) diameter cap washers, at 150 mm (6 in.) o.c., into wood studs at 400 mm (16 in.) o.c.	Q₅₀ ≤ 0.75 kPa	22 mm
25-mm "FOAMULAR® CodeBord®"	Nails with 25-mm (1-in.) diameter cap washers, at 150 mm (6 in.) o.c., into wood studs 600 mm (24 in.) o.c.	Q₅₀ ≤ 0.55 kPa	11 mm

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