Class A1 Breather Membrane Why Partel EXOPERM DURO A1? Designed to meet the highest levels of fire protection, EXOPERM DURO A1 is a non-combustible highly breathable membrane. This Class A1 breather membrane is suitable for installation on the façade, in high-rise and high-risk buildings A1, Reaction to Fire classification A1 Compliant with UK Building Regulations Approved Document B Advanced glass fibre fabric for enhanced structural stability Suitable for high-rise and high-risk buildings Highly vapour open with an Sd value of 0.03 m Class W2 resistance to water penetration Low emissivity reflective surface boots thermal performance High UV resistance Weather tight Independently tested to EN 13501-1 for compliance Technical Data WEIGHT EN 13859-2 210 g/m² REACTION TO FIRE EN 13501-1 A1 Sd VALUE EN 13859-2 0.03M WATER RESISTANCE EN 1928 W2 TENSILE STRENGTH MD / CD EN 13859-2 4200 / 3100 N / 50mm NAIL TEAR RESISTANCE MD / CD EN 13859-2 290 / 390 N ±75 Application EXOPERM DURO A1 is a non-combustible Class A1 breather membrane is designed for use on the cold side of insulation on façade wall structures, offering the highest standard of fire-safety and protection for tall buildings (higher than 11 meters). Suitable for: Facades with open or closed joints High-rise, high-risk and public buildings (schools, offices, commercial centres, hospitals, etc.) Commercial and residential developments Metal and timber framed constructions Offsite construction New builds and retrofits Dimensions 1.5m X 50m=75m2 (59-1/16” X 164’-1/2” = 807 SF) Documents EXOPERM DURO A1 Data Sheet EXOPERM DURO A1 DoP
