T he 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 warehouse only while supplies last

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, giving you confidence on every project.

With airtightness, fire safety, weather protection, and breathability combined in one product, 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 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 across 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 completely VOC-free, making it safe for applicators, building occupants, and the environment.

With Passive Purple External, you get airtightness, weather resistance, and long-term structural protection in one advanced, certified liquid membrane — ideal for timber frame, retrofit, and high-performance construction projects.