Passive Purple External Brush: Precise Airtight & Waterproof Sealing for Every Detail - Brush Applied Airtight Facade Membrane
Verified by manufacturer 1 day ago
PASSIVE PURPLE® EXTERNAL BRUSH
Vapour open fire resistant airtight membrane for both external and internal use. Used on any form of construction from Timber frame as a weather barrier to masonry internal airtight membranes
Application
The product is applied to exposed facades as a protective membrane. Usually applied before the application of PASSIVE PURPLE® EXTERNAL, on gaps, joints, connections, service penetrations, corner junctions.
Description
Passive Purple External Brush: The Ultimate Airtight Membrane for Precise Application
Passive Purple External Brush is a top-tier, brush-applied airtight membrane designed to provide complete airtightness and moisture protection, even in the most challenging areas. It’s a breathable and vapour-permeable membrane that allows moisture vapor to escape while preventing external air and water infiltration, making it ideal for creating an airtight building envelope.
Why Passive Purple External Brush is the Best Airtight Membrane:
- Enhanced Airtightness & Vapour Control: Reduces air leakage and heat loss, improving energy efficiency and indoor climate control.
- Breathable & Watertight: Prevents moisture ingress while allowing the substrate to breathe, reducing condensation and mold risk.
- Precise Application: Easily applied with a brush for detailing and small, hard-to-reach areas, ensuring complete coverage.
- Versatile Use: Suitable for timber frame, concrete, masonry, and other surfaces, making it a reliable choice for new builds and retrofit projects.
- Long-Term Durability: UV-resistant, crack-bridging, and suitable for both internal and external applications.
Applications:
- Airtight Sealing of Joints and Gaps: Ideal for sealing gaps and joints where traditional spray application is not feasible.
- Creating an Airtight Building Envelope: Ensures air and moisture control in Passivhaus and Net Zero projects.
Benefits of Using Passive Purple External Brush:
- Improves energy efficiency by reducing air permeability.
- Contributes to achieving airtightness and thermal performance standards.
- Compatible with other Intelligent Membranes products to form a complete, high-performance building envelope solution.
For a reliable, detailed, and easy-to-apply solution to airtightness, choose Passive Purple External Brush. Discover more at Intelligent Membranes.
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Features and benefits:
- Ready to use.
- Volatile organic content (VOC) free.
- Vapour open and watertight solution.
- Easy application.
- Fire-rated Class B.
- VOC-free and no nasty chemicals included.
- Fully flexible solution, so no bending or cracking.
- A highly cost-effective solution.
Air Leakage Protection
Leakage Protection
Air Protection
Vapour Protection
Brush Protection
Protection Spray
Protection Barrier
Protection Layer
Vapour Control Protection
Moisture Protection
Fire Protection
Seamless Protection
Radon Protection
Methane Protection
Liquid Protection
Air Leak Protection
Airtightness Protection
Mould Protection
Fungus Protection
New Build Protection
Retrofit Protection
Membrane Protection
Commercial Protection
Domestic Protection
Weather Protection
Wall Protection
Roof Protection
Floor Protection
General information
Color | Black Purple Grey Other 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 | H30/30 Air and vapour control membrane H30/261 Air and vapour control membrane H31/261 Air and vapour control membrane H31/45 Air and vapour control membrane P10/60 Air and vapour control layer P10/310 Air and vapour control layer |
SKU Code | IM/00PPEB5 |
Product range |
Specification data - Plastics sheets
Classification data | |
Product reference | Passive Purple External Brush: Precise Airtight & Waterproof Sealing for Every Detail. |
Material | 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). ICC-NTA flatwise tensile strength to ASTM E84-21A, all substrates met ICC-ES AC212 criteria for acceptance; 188 PSI (plywood), 186 PSI (cement mortar). |
Tear resistance | To NBN EN ISO 12311, 38/ 35 N/50 mm. |
Elongation to break | To NBN EN ISO 12311-1, >40%. Manufacturer guidanceElongation after ageing. |
Resistant to underground gases | Carbon dioxide permeability to EN1062-2, SD >75 m (Class C1). To EN1504-2, Pass. |
Water vapour resistance (minimum) | μ-value to EN ISO 12572, 2486. Sd-value to EN ISO 12572, 0.6–1. Guidance for specification option: Sd-value calculated based on a consumption of 0.6–0.8 kg/m². |
Fire performance | To EN 13501-1, Class B. To ASTM E84-21A, Class A. |
UV stabilization | UV and weather resistance to EN ISO 16474-3, Pass. Manufacturer guidanceConsult manufacturer for certification. |
Anti-static properties | Required. |
Environmental performance requirements | |
Volatile organic compounds (VOC) emissions level (maximum) | VOC free. |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 0%. Guidance for specification option: Grinded as solid form. |
Form | Liquid. |
Root inhibitor | Manufacturer guidanceConsult manufacturer for certification. |
Physical properties | |
Colour | Purple. Black. Anthracite. Cream. White. Other. Guidance for specification option: Other colours are available upon request; consult manufacturer for more details and insert requirements. Manufacturer guidanceOther colours are available upon request. Consult manufacturer for details. |
Weight (minimum) | 1.2–1.3 kg/L. Manufacturer guidanceDensity. |
Drying time | 4–12 hours. Guidance for specification option: 4–12 hours in normal conditions; dependant on weather. |
Air tightness | To EN 12114, 0.03 m³/m²·hour. |
Adhesion | Adhesion on mineral surfaces as concrete brick (with use of primer as bonding), to NBN EN ISO 4624, >1 N/mm², Pass. Adhesion of Passive Purple external brush on fibrecement boards (with use of primer as bonding), to NBN EN ISO 4624, >1 N/mm², Pass. Adhesion of Passive Purple external brush on insulation boards type 'Recticel', , to NBN EN ISO 4624, >1 N/mm², Pass. Adhesion of Passive Purple external brush on OSB wood (with use of primer as bonding), to NBN EN ISO 4624, Pass. |
pH | 9–10. |
Solids | >50%. |
Crack bridging | To EN1062, Pass; Class A3 (at 23°C), Class A4 (at -10°C). To EN1504-2, Pass. |
WaterImpermeability | To NBN EN 16302, Pass. |
Water vapour transmission | To ASTM E96, Pass. |
Water penetration | To ASTM E331, all substrates met ICC-ES AC212 criteria for acceptance. Manufacturer guidanceWater spray/ rain penetration. |
Freeze/ Thaw Resistance | To ASTM E2485-13, Pass. Guidance for specification option: ICC-NTA freeze/ thaw. |
Temperature resistance | -20°C to +70°C. Manufacturer guidanceAfter drying. |
Application temperature | >5°C. |
Consumption (per layer applied) | 0.75 kg/m². Manufacturer guidanceMinimum consumption. |
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 solid form. |
BIM objects
| Platform | Compatible | Version |
|---|---|---|
 Revit | - | 1 |
Literature
Airtight Details
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