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
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