The World's first Passive House Certified liquid vapor control, airtight and smoke tight coating

Regular Price - $275 per

Sale Price - $125 per
Sale price applies to product in-stock at WickRight warehouse only while supplies last

High-performance vapor-control membrane Passive Purple Air Barrier creates a continuous vapor control, airtight, and smoke tight layer across the building envelope. Unlike tapes, foils, or traditional membranes, Passive Purple is spray or roller applied, forming a seamless coating that seals even the most complex details.

Passive Purple not just another airtight paint –

Passive Purple is the benchmark for liquid airtightness. Independently tested, fully certified, and proven on thousands of projects. Passive Purple is the fastest, safest, and most reliable way to achieve airtightness for retrofits, new builds, and full Passive House projects.

Proven Airtightness – Passive Purple has a 0.03 ACH – that’s 20 times tighter than the Passive House requirement of 0.6 ACH. Whether you’re aiming for certification or superior performance, Passive Purple delivers.

Why Choose Passive Purple Liquid Airtight Paint?

Air leakage is one of the most common causes of heat loss, condensation, and mold in buildings. Different materials such as brick, timber, steel, and concrete expand and contract at different rates, creating micro-cracks in plaster and finishing layers. These cracks become leakage points that compromise airtightness and waste energy.

Passive Purple provides a flexible, durable, airtight layer that adapts to movement of the building, ensuring long-term protection against drafts and moisture intrusion.

Suitability

Passive Purple is suitable for all types of building construction - New builds, Retrofits.
Works on all substrates – brick, block, timber, concrete, plasterboard, OSB, and Light Gauge Steel (LGS)

Benefits of Passive Purple

• ✅ Passive House Certified and BBA Certified – Passive Purple meets the highest standards of airtightness and durability, providing total peace of mind to architects, specifiers, and builders.
• ✅ Seamless and flexible – no weak points or overlaps
• ✅ Retrofit ready – apply internally without removing walls
• ✅ 🌍 Water-based, VOC-free, Rated M1 Class – safe for indoor use – zero nasty chemicals
• ✅ 🌍 Underground Gases Protection – protects occupants from harmful ground gases, including radon and methane
• ✅ Fire Safety Built In – Unlike paper-based membranes (Class E), Passive Purple has a Fire Class C rating , adding an extra layer of resilience to your build
• ✅ Permanent airtight layer – can be plastered, rendered, or painted once cured

Spray or Roller Application

• Applied to the warm side of insulation: prevents unwanted air leakage through walls, floors, roofs, and junctions.
• Spray application: Using an airless machine or roller, one installer can apply up to 300m² per day, making it one of the fastest airtightness solutions available, slashing labor time and keeping projects on schedule