Exoperm Duro A1 is a revolutionary non-combustible, external breather membrane, engineered to deliver the highest level of fire safety and building protection. This product sets a new standard for vapour-permeable sheets, providing superior weather and moisture management while ensuring ultimate resistance to fire. Specifically created for high-rise and high-risk buildings, Exoperm Duro A1 membrane is a critical component for any modern façade design, safeguarding the building envelope without compromising on performance. Key Features Ultimate Fire Safety: Achieves the highest possible fire classification of Euroclass A1 fire rating (BS EN 13501-1), certifying it as a truly non-combustible material. Exceptional Performance: As a non-combustible, breathable membrane, it allows vapour to escape from the wall structure, preventing moisture buildup while maintaining superior airtightness and weather protection. Durable & Resilient: The advanced fabric construction offers excellent mechanical strength and resistance to UV exposure (for up to 3 months, without cladding), ensuring long-term reliability and performance as an external protection layer. Fully Certified: This breather membrane is both CE approved and UKCA approved, meeting stringent European and UK standards. Applications Exoperm Mono A1 works as a non-combustible breathable membrane and windtight layer for the external building envelope- Timber and steel framed constructions. Residential and commercial developments. New builds and retrofits. Façades with closed joints. High-rise, high-risk and public buildings (schools, offices, commercial centres, hospitals, etc.) Offsite construction.
