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Table 1. CAN/ULC-S710.1-11 technical requirements- Class 1
Property Requirements
Min. Max.
Air permeance (L/(m2•s) at 75 Pa) 0.02
Open cell content (%) 98
Density (kg/m3) 8
Dimensional stability Volume change (%) at −20°C ±5
Volume change (%) at 70°C , 97 ±3% RH ±15
Durability performance: air permeance per 1-m length after aging on client specified substrates (L/s at 75 Pa) 0.05
Elongation at break (%) 5
Initial thermal resistance (without captive blowing agent) at 25 mm thick (m2•°K/W) 0.55
Surface burning characteristics Class 1 – flame spread 25
Smoke developed classification Class 1 50
Tack-free time (min) at 23 ° C, 50% RH 20
Tensile strength (kPa) 25
Volatile organic compounds (time to reach maximum allowable limit levels) (h) 1
Yield (L/100g) Report value