Passive Purple Brush – Detail & Joint Airtight Membrane - Brush-applied Liquid Airtight Membrane

Name: Passive Purple Brush – Detail & Joint Airtight Membrane - Brush-applied Liquid Airtight Membrane
Brand: Intelligent Membranes
SKU: so1Lx3nzTLqTDBz6H1TqhU

Verified by manufacturer 1 day ago

Intelligent Membranes

Product certifications:

QA Certificate
Certificate type

BBA-certified fibre-reinforced airtight membrane, brush-applied for junctions, joints and penetrations. Passivhaus certified. 1kg/m2, spans gaps to 5mm, plasterable and paintable once cured.

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+44 (0)1223 208174 Website

Application

Product Applications for Passive Purple Brush

Floor-to-wall airtight connections for vapour control
Wall-to-ceiling airtight junctions to prevent air leakage
Window-to-wall airtight sealing for energy efficiency
Pipe and service penetration sealing for airtightness and vapour protection
Airtight wall coating for vapour control and moisture protection
Wall-to-wall airtight joints for continuous building envelope protection
Vertical and horizontal airtight joints for air and vapour control membranes
Curtain wall airtightness detailing for thermal performance
Wall-to-roof airtight sealing, including steel deck vapour control connections

Description

Passive Purple Brush is Intelligent Membranes' fibre-reinforced, brush-applied airtight vapour control membrane - the detail product in the Passive Purple system. While Passive Purple (roller-applied) covers the field area, Passive Purple Brush is used at every junction, joint, penetration and interface where a roller cannot reach or where additional reinforcement and gap-bridging is needed.

BBA certified (Certificate 22/6002), Passivhaus certified, ICC tested and M1 Class, Passive Purple Brush holds the full suite of certifications that architects, building control and SAP assessors require. It bridges gaps up to 5mm, achieves elongation of 45% to move with the building, and bonds to concrete, brick, timber and all common construction substrates. Coverage is 1kg/m2 at the standard application thickness.

Supplied in 3.7kg and 6.9kg tubs. Once cured, the membrane can be plastered, painted or rendered over directly - no primer or special preparation needed for the overcoat. This makes it the preferred choice for specifiers who want a clean, fast airtight detail that integrates naturally into the finishing programme.

Typical applications include wall-to-floor and wall-to-ceiling junctions, around window and door frames, joist ends, service penetrations for pipes and cables, and all substrate transitions where cracking or differential movement might otherwise compromise the airtight layer.

Product page: https://intelligentmembranes.com/products/passive-purple-internal-airtight-vapour-control-paint-6-9

Internal airtightness solutions: https://intelligentmembranes.com/pages/internal

Application and coverage rates: https://intelligentmembranes.com/pages/intelligent-membranes-application-coverage-rates

Watch Passive Purple Brush in action: https://www.youtube.com/watch?v=uGDUXTnkabc

General information

Color	Purple White Other Blue Orange
Finish	Other
Material	Polymer
Shape	Formless
Length	Bespoke
Width	Bespoke
Height	Bespoke
Warranty description	Lifetime

Uniclass	Pr_25_57_65_60 Plastics sheetsPrimary
CAWS	P10/60 Air and vapour control layer P10/310 Air and vapour control layer

SKU Code	IM/00PPB6/9

Product range	Methane and Radon Barrier Vapour Control - Air barrier / Internal

Specification data - Plastics sheets

Classification data
Product reference	Passive Purple Brush: Precision Airtight Membrane for Effective Sealing and Detailing.
Material	Water-based polymer.
Purpose	Airtight vapour control membrane.
Standard	To EN ISO 12572, BS EN 12114, BS EN ISO 11925-2 and BS EN ISO 4624.
Third-party certification	British Board of Agrément (BBA), EOTA TR008 and PASSIVHAUS certified.
Performance characteristics	-
Tensile strength (minimum)	42 N/50 mm². Flatwise tensile strength to ASTM C0297-16, all substrates met ICC-ES AC212 criteria for acceptance. Manufacturer guidance Flatwise tensile strength.
Tear resistance	To EOTA TR008, Pass.
Elongation to break	264% (average value) and to BS EN ISO 527-3, 262.7% (average value after ageing).
Resistant to underground gases	- Manufacturer guidance Consult manufacturer for more details and insert requirements.
Water vapour resistance (minimum)	µ-value to ISO 12572, 35 967. SD-value to ISO 12572, 11.5 (at 0.32 mm dry thickness) and 17.3 (at 0.48 mm dry thickness). Manufacturer guidance To EN ISO 12572, μ = 35967.
Fire performance	To EN 13501-1, Class C. Flame propagation fire reaction to EN ISO 11925, Pass.
UV stabilization	- Manufacturer guidance Consult manufacturer for more details and insert requirements.
Environmental performance requirements	-
Environmental rating	Class M1.
Volatile organic compounds (VOC) emissions level (maximum)	To EN ISO 16000-9/ 6, EN 717-1 and EN 180 16000-28, free from VOC.
Recycled content As defined in clause 7.8 of BS EN ISO 14021	0%. Guidance for specification option: Grinded as solid film in plastics.
Form	Liquid.
Root inhibitor	- Manufacturer guidance Consult manufacturer for more details and insert requirements.
Physical properties	-
Colour	Purple. White. Blue. Green. Orange. Manufacturer guidance Passive Purple Brush and Passive Purple Brush Editions can be made into other colours on demand. Consult manufacturer for more details and insert requirements.
Weight (minimum)	1.15 kg/L. Manufacturer guidance Density.
Drying time	4–48 hours. Guidance for specification option: Indicative drying time. Depending on substrate temperature, air humidity etc.
Air tightness	0.04 m³/h·m². Guidance for specification option: Airtightness floor/ wall after ageing (NBN EN 12114 Eurocode 7):. (50 bar) (v).
Adhesion	Adhesion on red brick (dry or moist): to ISO 4624, >1 N/mm². Adhesion on concrete brick (dry or moist): to ISO 4624, >1 N/mm². Adhesion on PVC: to ISO 4624 0.8 N/mm². Adhesion to aluminium: >1 N/mm². Adhesion on ethylene propylene diene monomer (EPDM): >1 N/mm². Adhesion on calcium silicate stone (dry or moist): to ISO 4624, adhesion value exceeding substrate strength. Adhesion on roofing: adhesion value exceeding substrate strength. Adhesion of spray plaster on Passive Purple Brush: adhesion value exceeding substrate strength. Guidance for specification option: Adhesion on EPDM (Tridex): >1 N/mm². Adhesion of spray plaster (Knauf MP75) on Passive Purple Brush: adhesion value exceeding substrate strength.
Water penetration	To ASTM E331, all substrate meet ICC-ES AC212 criteria for acceptance. Manufacturer guidance Water spray/ rain penetration.
Dangerous substances	To EN ISO 16000-9/ 6, EN 717-1 and EN 180 16000-28, free from carcinogenics, ammonia and formaldehyde.
Consumption (per layer applied)	0-5–1 kg/m². Guidance for specification option: Total advised indicative consumption. Dependent on substrate.

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 film in plastics.