Protective coating PASSIVE PURPLE EXTERNAL

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Product Overview
Passive Purple External is a liquid-applied, fire-rated, watertight and vapour-breathable membrane for external and internal façade use. It provides combined airtightness, weather protection and moisture management in a single certified coating, suitable for new build and retrofit projects.

Key Benefits & Features

• Fire Class B – fire-rated for façade applications.
• Raintight & Vapour Breathable – prevents liquid water ingress while permitting vapour diffusion to dry out the wall.
• Airtight & Smoke-Tight – reduces uncontrolled air leakage and smoke movement.
• UV Resistant & Self-Cleaning – durable exterior finish with lower dirt pickup.
• Anti-Fungus Protection – resists mould growth.
• Crack-Bridging – maintains continuity across minor movement and cracks.
• Concrete Protection – carbonation barrier and protection against salts.
• Dual Purpose – suitable for internal and external applications, retrofit and new build.
• VOC-free, Water-Based – safer for applicators and occupants.

Tested & Certified

• Reaction to fire: Euroclass B-s1,d0 (EN 13501-1 on qualifying substrates) and ASTM E84 Class A.
• Watertight: Class W1 (EN 13859-2) and water permeability Class W3 (EN 1062-3); near-zero water absorption (EN 16302).
• Breathable / vapour-open: Sd ≈ 0.6 m (EN ISO 12572).
• Crack-bridging: A3 (23°C) / A4 (-10°C) (EN 1062-7).
• CO₂ / carbonation barrier Class C1 (EN 1062-6).
• Low-emission: EMICODE EC2; anti-fungus rating 0; independent approvals: Kiwa BDA Agrément, Passive House component (phB), ICC-ES AC212.

Why Choose Passive Purple External?

• Efficient application: a single installer can cover up to ~300 m²/day using airless spray (project dependent).
• Flexible application methods: airless spray for large areas, roller for small areas and touch-ups.
• Combination of airtightness, fire performance and breathable drying capability in one certified product.

Substrates & Compatibility

• Concrete and masonry walls
• Engineered timber panels / OSB
• Insulation boards and panels
• Fibre cement boards

Directions for Use
Surface Preparation

• Remove salt efflorescence, dust, loose materials and standing water.
• Apply only on a closed surface — fill holes and joints first with a suitable fast-setting product or foam.

Application Conditions

• Substrate temperature: above 5°C.
• Application on damp surfaces permitted provided there is no standing water.
• Do not add water or solvents to the product.
• Do not apply in direct full sunlight or during rain.

Application Method

• Apply using an airless spray device (e.g., Graco) for large projects or with a paint roller for small areas and repairs.
• Always apply two coats; allow first coat to dry fully before applying the second.
• Clean tools immediately with water after use.

Technical Data (summary)

• Usage: External or Internal
• Applied by: Roller or Spray (airless)
• Colour options: Purple, Black, Cream, White
• Size: 10 kg
• Fire certification: EN Fire Class B / ASTM Fire Class A
• Watertight rating: W1 (EN 13859-2); water permeability W3 (EN 1062-3)
• Breathability: Sd ≈ 0.6 m (EN ISO 12572)
• Crack-bridging: A3 (23°C) / A4 (-10°C) (EN 1062-7)
• Carbonation barrier: Class C1 (EN 1062-6)
• EMICODE EC2; anti-fungus rating 0; VOC-free, water-based
• Approvals: Kiwa BDA Agrément; Passive House component (phB); ICC-ES AC212
• Application rate note: up to ~300 m²/day with airless spray (project dependent)
• Unit price (excl. VAT): 330.00 USD

Related Guides & Resources

• Airtight and Vapour Control for High-Rise Re-Cladding
• What is Airtightness (and Why It Matters for Net Zero Buildings)
• Damp Walls? Two Breathable Solutions That Actually Work