Passive Purple External: Ultimate Internal & External Airtight and Waterproof Membrane for Complete Building Protection - Spray Applied Liquid Facade Membrane
Verified by manufacturer 11 days ago
PASSIVE PURPLE® EXTERNAL
Wheel Mark - Certificate of Approval
Certificate type
ISO 9001 Quality Management
Certificate type
KIWA BDA
Certificate type
Airtight liquid applied facade waterproof membrane. vapour open but waterproof. 0.03 airtightness on the substrate its adhered to. Spray, roll or brush applied. Vapour Control membrane. Vapour
Application
Passive purple external is applied in 2 coats with an airless spray or paint roller which dries to form a flexible watertight membrane which is currently undergoing Passivhaus and Kiwa certification. The membrane forms a waterproof vapour open-faced membrane which can be used to reduce uncontrolled air filtration, the product also achieves a reaction to fire classification of B-s1, d0 to EN 13501- 1:2018.
Directions of use:
- Remove salt efflorescence, dust, loose parts and standing water from the surface.
- Apply on a closed surface; if necessary, fill holes and joints with a fast setting cement-based product or polyurethane foam.
- Apply Passive Purple External at T < 5°C (also substrate temperature).
- Application on humid surfaces is allowed, but remove standing water.
Apply Passive Purple External with an airless paint spray device, or paint roll, in two layers. Apply the second layer, after the first layer has dried.
- Clean tools with water after use.
- The product is ready to use.
- Volatile organic content (VOC) free.
Description
Discover Passive Purple External: The Ultimate Net Zero & Passivhaus Waterproofing Solution for Any Construction Project
Introducing Passive Purple External, a revolutionary liquid-applied membrane by Intelligent Membranes, specifically engineered to deliver superior waterproofing, airtightness, and energy efficiency for any construction type. Whether it’s a new build, retrofit, or heritage restoration, this breathable membrane offers unmatched versatility, durability, and performance.
Why Passive Purple External is the Best Choice:
- Unmatched Airtightness & Waterproofing: Provides a seamless, watertight barrier that protects against rain, wind, and environmental elements.
- Energy Efficiency: Reduces heat loss while allowing moisture vapor to escape, minimizing condensation and maintaining a consistent indoor climate.
- Fire Class B Rated & UV Resistant: Withstands harsh conditions and offers long-lasting protection.
- Ideal for Heritage Projects: Flexible and breathable to protect historic structures.
- Self-Cleaning & Anti-Fungus Properties: Reduces dirt pickup, ensuring a clean, fresh appearance over time.
Excelling Characteristics of Passive Purple External:
- Raintight yet vapour breathable
- Crack-bridging capability
- Carbonatation and salt protection for concrete
- Smoke-tight and anti-carbonatation on cement surfaces
Why Choose Passive Purple External?
It’s the ideal solution for architects, builders, and contractors seeking reliable, eco-friendly, and versatile waterproofing. With its breathable design, seamless application, and compatibility with a wide range of surfaces, it’s perfect for achieving Net Zero and Passivhaus standards.
General information
Color | Black Purple Other Cream White Manufacturer guidanceOther colours are available upon request. Consult manufacturer for details. |
Finish | Other |
Material | Polymer |
Shape | Other Formless |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Warranty description | 25 year |
Uniclass | |
CAWS | H30/261 Air and vapour control membrane H31/261 Air and vapour control membrane P10/60 Air and vapour control layer H31/45 Air and vapour control membrane P10/310 Air and vapour control layer H30/30 Air and vapour control membrane |
Product range |
Specification data - Plastics sheets
Material | Acrylate polymer. |
Purpose | Weatherproof breather membrane. |
Standard | To BS EN 16302, BS EN ISO 12572 and BS EN ISO 4624. |
Performance characteristics | |
Tensile strength (minimum) | 38/ 35 N/50mm (after ageing). |
Tear resistance | To NBN EN ISO 12311: 38/ 35 N/50 mm. |
Elongation to break | 38/ 45% (after ageing). |
Resistant to underground gases | Manufacturer guidanceConsult manufacturer. |
Fire performance | Class B-s1, d0.Guidance for specification option: Reaction to fire classification. |
UV stabilization | Manufacturer guidanceConsult manufacturer for certifications. |
Anti-static properties | Required. |
Third-party certification | Manufacturer guidanceManufacturer's standard. SHR, BBR. |
Form | Liquid. |
Root inhibitor | Manufacturer guidanceConsult manufacturer. |
Physical properties | |
Colour | Black.Purple.Other.Manufacturer guidanceOther colours are available upon request. Consult manufacturer for details. |
Weight (minimum) | 5 kg. |
Dimensions | |
Thickness (minimum) | 0.75 kg/m².Guidance for specification option: Total indicative consumption/m². |
Width (minimum) | 106 linear metres average at 75 mm. |
Roll length (minimum) | 106 linear metres average at 75 mm (8m²). |
Recycled content | Manufacturer guidanceGrinded as dry film. |
Density | 1.2–1.3 kg/L. |
pH | 9–10. |
Solids | >50%. |
Adhesion | 0.16 N/mm². Guidance for specification option: Adhesion on insulation board 'Recticel' (to NBN EN ISO 4624). |
Sustainability data
Contains Red List materials | No |
Country of material origin | Europe |
Country of product manufacture | Europe |
Material | Polymer |
Recyclability | Not recyclable due to its adhesion to other products |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 0 % Guidance for specification option: Grinded as dry film. |
BIM objects
| Platform | Compatible | Version |
|---|---|---|
 Revit | - | 1 |
Third party certifications
Wheel Mark - Certificate of Approval
LABC - Certificate - Intelligent Membranes - Passive Purple External
ISO 9001 Quality Management
BBRI TEST OF WATER VAPOUR
ISO 9001 Quality Management
BBRI Tensile and Elongation
ISO 9001 Quality Management
BBRI Tensile and Elongation report
ISO 9001 Quality Management
Rockwool-Passive Purple and Passive Purple External
KIWA BDA
Kiwa Agrement BAW-21-214-P-A-UK BDA Agrément® Passive Purple External Liquid-Applied Waterproofing
Literature
Fire Cert Passive Purple External
Passive Purple Product sheet
Case studies
Bridges
Timber frame facade membrane
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