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Table 1. CAN/ULC-S711.1-11 Technical Requirements
Property Unit

Requirement

Min. Max.
Air permeance L/(s·m 2) at 75 Pa 0.02
Open cell content % 10
Density kg/m 3 16
 Dimensional stability – volume change at   –20°C % 5
Dimensional stability – volume change at  70°C % 16
Durability performance: air permeance per 1-m length after aging on specific substrates L/s at 75 Pa 0.05
Elongation at break % 5
Long-term thermal resistance (LTTR) at 25-mm-thickness m 2·°C/W 0.70
 Surface-burning characteristics Class I – flame spread 30
Surface-burning characteristics  Class II – flame spread 31 75
Surface-burning characteristics  Class III – flame spread 76 150
Smoke-developed classification  Class I 50
Smoke-developed classification  Class II 250
Smoke-developed classification  Class III 250
Tack-free time min 2
Tensile strength kPa 130
Volatile organic compounds (time to reach maximum allowable limit levels) h 1