World’s first and only Fire Class B liquid-applied airtight paint

Regular Price - $358 per

Sale Price - $150 per

Sale price applies to product in-stock at WickRight only

Passive Purple Exterior offers unmatched performance for both interior and exterior applications. It combines airtightness, protection, and intelligent moisture management in a single certified solution.

Why Choose Passive Purple External?

Passive Purple External is the ultimate airtight and weatherproof vapor control paint, engineered for high-performance building envelopes. Retrofit or new build, it delivers unbeatable protection, speed of application, and long-term durability.

• Cost Effective – A single installer can cover up to 300m² per day using an airless spray device. That means faster application, reduced labor costs, and quicker project delivery.
• Flexible Application – Apply with an airless spray machine for large projects or a roller for smaller areas and touch-ups.
• KIWA Approved – Independently tested and certified for performance

Passive Purple External is the smart choice for architects, builders, and retrofit specialists who want certified performance without compromise.

Key Benefits & Features

• 🔥 Fire Class B – exceptional fire resistance, outperforming standard membranes and coatings for safety and compliance.
• 🌧 Raintight & Vapor Breathable – keeps water out while allowing moisture to escape, ensuring a healthy building. Creates a tough, watertight and airtight membrane on exterior facades, providing UV resistance and long-term weatherproofing.
• 🔒 Airtight & Smoke-Tight – delivers a complete barrier to uncontrolled air leakage and smoke movement. Ensures buildings stay airtight and smoke-tight, while still allowing vapor to escape where needed.
• ☀️ UV Resistant & Self-Cleaning – long-term durability with reduced dirt pickup and surface staining.
• 🦠 Anti-Fungus Protection – prevents mold growth and safeguards indoor air quality.
• 🧱 Crack-Bridging – maintains airtightness even where movement or minor cracks occur.
• 🧪 Concrete Protection – blocks carbonation, provides realkalisation, and shields against salts from roads and de-icing.
• 🌍 Dual Purpose – suitable for interior and exterior applications on retrofit and new-build projects.
• 💨 Intelligent Moisture Management – allows the substrate to breathe, balancing vapor openness with airtight performance.
• 🌍 VOC-Free & Eco-Friendly – Water-based and VOC-free, safe for installers, building occupants and the environment.

Passive Purple External – airtight, weather resistant, and long-term structural protection in one advanced, certified liquid membrane — ideal for timber frame, retrofit, and high-performance construction projects.