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Passive Purple External Brush: Precise Airtight & Waterproof Sealing for Every Detail - Brush Applied Airtight Facade Membrane

Verified by manufacturer 29 days ago

PASSIVE PURPLE® EXTERNAL BRUSH

Intelligent Membranes

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

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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.

#AirtightMembrane #BreathableMembrane #AirtightBuildingEnvelope #VapourControl #BuildingPerformance #PassivhausCertified #ConstructionMaterials #IntelligentMembranes #EnergyEfficiency #BuildingAirtightness

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.

General information

Color

Manufacturer guidance

Other 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

Pr_25_57_65_60 Plastics sheetsPrimary

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

Product range

Weatherproofing
Façade Membrane - Retrofit internal Air Barrier
Methane and Radon Barrier
Vapour Control - Air barrier / External

Specification data - Plastics sheets

Material

-

Manufacturer guidance

Manufacturer's standard.

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 guidance

Consult manufacturer.

UV stabilization

-

Manufacturer guidance

Consult manufacturer for certification.

Anti-static properties

Required.

Form

Liquid.

Root inhibitor

-

Manufacturer guidance

Consult manufacturer for certification.

Physical properties

-

Colour

Black.

Dark purple.

Grey.

Manufacturer guidance

Other 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.

Width (minimum)

75 mm.

Guidance for specification option:

106 linear metres average.

Roll length (minimum)

75 mm.

Guidance for specification option:

106 linear metres average, 8m².

Density

1.2 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 content

As 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

Airtight Details

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