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Protective coating PASSIVE PURPLE PREPERATION
cementpolyurethane foamliquid

Protective coating - PASSIVE PURPLE PREPERATION - Intelligent Membranes - cement / polyurethane foam / liquid
Protective coating - PASSIVE PURPLE PREPERATION - Intelligent Membranes - cement / polyurethane foam / liquid
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Characteristics

Function
protective
Material
polyurethane foam, cement
Other characteristics
liquid

Description

Product overview
  • Passive Purple Preparation Pack contains the accessories required to prepare substrates before applying a liquid airtight vapour control coating, ensuring correct adhesion and continuous airtightness at junctions.
  • Kit includes membranes, tapes and compatible sealants for complete airtight connections at critical junctions.


What is Passive Purple and how to use it?
  • Passive Purple is an Intelligent liquid airtight vapour control membrane applied with an airless spray device to the warm side of the insulation across the external envelope (floors, walls, roofs, joists), including difficult connection areas.
  • When used on the warm side, Passive Purple may be applied to either face of the external envelope to form a vapour control layer.
  • Before application ensure surfaces are solid, dust-free and closed (all holes and joints sealed).
    • Large holes and joints (>5 mm): seal using fast-setting cementitious products or polyurethane foam.
    • Small holes and joints (2–5 mm): seal using Passive Purple Liquid Brush (thicker brush-applied version).
  • After preparation, Passive Purple can be spray-applied with an airless machine; a single installer can apply up to 300 m² per day.
  • For smaller projects, Passive Purple Brush (brush-applied) or roller-applied versions are available where airless spraying is not practical.
  • Ensure airtight continuity at wall-to-ceiling and at junctions between different construction materials (brick to concrete, steel to concrete, etc.).
  • Passive Purple reduces the risk of small finish cracks caused by differential movement of materials, helping prevent air leakage, energy loss, damp and mould.


Why choose Passive Purple?
  • BBA certified & Passivhaus certified: Passive Purple is a fully BBA certified Liquid Airtight Vapour Control Layer and a certified Passivhaus component.
  • Radon barrier: provides effective protection against radon gas ingress when specified.
  • High productivity: up to 300 m² coverage per day for a single installer using airless spray.
  • M1 class, VOC free: water-based formulation with very low emissions.
  • Fire classification: Fire Class C.
  • Exceptional airtightness: Passivhaus certified test result 0.03 ACH; supports achieving ≤ 0.6 ACH for building targets.


Uses
Flexible airtight coating with strong adhesion on a variety of substrates:
  • Concrete
  • Brick
  • Wood
  • Floor-to-wall connections
  • Ceiling connections and joists
  • Vertical and horizontal joints


Data sheets & certificates
  • BBA certificate — spray application (data sheet available)
  • Passivhaus certification documentation (certificate available)


Technical characteristics / specifications
  • Manufacturer: Intelligent Membranes.
  • Commercial reference: Passive Purple Preparation Pack.
  • Kit contents: membranes, tapes and sealants to create airtight seals (contents specified on product pack).
  • Coverage: up to 300 m² per day per installer (airless spray application, typical).
  • Application methods: airless spray (primary); brush-applied Passive Purple Brush; roller-applied version available.
  • Intended location: warm side of insulation across the external envelope (floors, walls, roofs, joists) and difficult junctions.
  • Suitable substrates: concrete, brick, wood and common construction junctions.
  • Performance: Passivhaus component certified; typical test result 0.03 ACH; can support guarantees ≤ 0.6 ACH.
  • Certifications: BBA certified; Passivhaus certified; material listings for moisture control compliance.
  • Environmental/emissions: M1 class, VOC-free, water-based.
  • Fire rating: Fire Class C.
  • Radon: provides radon barrier protection when specified.
  • Preparation notes: surfaces must be solid, dust-free and closed; large holes/joints (>5 mm) sealed with fast-setting cementitious products or PU foam; holes/joints 2–5 mm sealed with the brush-applied version.

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PASSIVE PURPLE

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.