OBEX CORTEX – Vapour Permeable Membrane
Obex Cortex™ – Advanced Weatherproofing for Modern Building Envelopes
Obex Cortex™ is a high-performance weather barrier system engineered to protect buildings from the elements while allowing structures to breathe. Designed for use behind ventilated façades and cladding systems, Cortex™ provides superior water hold-out, vapour permeability, and UV resistance—ensuring long-term durability and energy efficiency.
With a robust membrane and specialised tape systems, Obex Cortex™ offers a complete solution for air and weather tightness, helping to meet stringent building codes and improve occupant comfort. It’s trusted by architects, builders, and installers for its ease of use, long-term reliability, and proven performance in both residential and commercial construction.
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Breathable – Permits the escape of harmful vapours, reducing condensation and mould risk -
Complies with AS/NZS 4201 standards for vapour permeability. Meets AS 1530.2 criteria for low flammability
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Water-Resistant – Offers robust protection against rain, preventing water ingress into the building’s fabric
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UV-Resistant – Provides up to 3 months of full UV exposure protection, supporting a flexible installation schedule
