{"title":"Fire Protection","description":"\u003cp\u003e\u003cstrong\u003eFire protection you apply like paint — three products, three different jobs.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e🔥 \u003cstrong\u003e\u003ca href=\"\/en-us\/products\/fred-flame-retardant-paint\" title=\"FRED Class A2-s1,d0 fire retardant intumescent coating for spray foam and timber\"\u003eFRED\u003c\/a\u003e — the Class A fire paint for spray foam and timber.\u003c\/strong\u003e FRED is our \u003cstrong\u003eClass A2-s1,d0 fire retardant intumescent coating\u003c\/strong\u003e, the thermal barrier that lets \u003cstrong\u003eexposed spray foam insulation and timber\u003c\/strong\u003e meet fire regulations. If building control has flagged exposed foam in an attic, garage ceiling, plant room or workshop — or you need a \u003cstrong\u003efire rated paint for timber\u003c\/strong\u003e — FRED goes on by spray or roller and forms an intumescent thermal barrier that resists flame spread at the highest reaction-to-fire class a coating can achieve.\u003c\/p\u003e\n\u003cp\u003e🛡️ \u003cstrong\u003e\u003ca href=\"\/en-us\/products\/passive-purple-x-fire-class-b-airtight-paint-5kg\" title=\"Passive Purple X fire rated airtight membrane — ASTM E84 Class A and EN Class B\"\u003ePassive Purple X\u003c\/a\u003e — the fire rated airtight membrane.\u003c\/strong\u003e Airtightness and fire performance in one liquid-applied membrane, fire rated to \u003cstrong\u003eASTM E84 Class A (US)\u003c\/strong\u003e and \u003cstrong\u003eEN fire Class B (Europe)\u003c\/strong\u003e — the airtight line for new builds, high-rise and re-cladding projects where the vapor control layer itself must carry a fire classification.\u003c\/p\u003e\n\u003cp\u003e🏢 \u003cstrong\u003e\u003ca href=\"\/en-us\/products\/facade-waterproofing-membrane-5kg\" title=\"Passive Purple External fire rated façade waterproofing membrane — ASTM E84 Class A and EN Class B\"\u003ePassive Purple External\u003c\/a\u003e — the fire rated façade membrane.\u003c\/strong\u003e A weather-resistive barrier fire rated to \u003cstrong\u003eASTM E84 Class A (US)\u003c\/strong\u003e and \u003cstrong\u003eEN fire Class B (Europe)\u003c\/strong\u003e that waterproofs and airtights the façade in one coat — sprayed, rolled or brushed onto sheathing and masonry, keeping weather out and air where it belongs.\u003c\/p\u003e\n\u003cp\u003eEach product does a different job: FRED protects surfaces from fire; Passive Purple X and External are airtight membranes that also carry US and European fire ratings. Not sure which your project needs? Read the \u003ca href=\"\/en-us\/pages\/fire-protection\" title=\"Fire protection solutions guide\"\u003efire protection solutions guide\u003c\/a\u003e or \u003ca href=\"\/en-us\/pages\/contact\" title=\"Contact Intelligent Membranes\"\u003eask our technical team\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e🇺🇸 \u003cstrong\u003eSpecifying in the United States?\u003c\/strong\u003e Our membranes are \u003cstrong\u003etested to ASTM standards for world markets\u003c\/strong\u003e — download the \u003ca href=\"\/en-us\/pages\/us-specifications\" title=\"US specifications in CSI MasterFormat\"\u003eUS specifications (CSI MasterFormat)\u003c\/a\u003e and order locally through \u003ca href=\"\/en-us\/pages\/chicago\" title=\"Passive Purple Chicago — airtight, smoke-tight and radon barrier membranes installed by WickRight\"\u003eWickRight, our Chicago distribution \u0026amp; installation partner\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"fred-flame-retardant-paint","title":"FRED - Fire Retardant Thermal Barrier Intumescent Coating (Class A2-S1, D0) Timber and Spray Foam","description":"\u003cp\u003e\u003cstrong\u003eFred\u003c\/strong\u003e by Intelligent Membranes is an advanced, high-performance fire retardant designed to safeguard spray foam insulation and timber structures from fire hazards. Formulated with cutting-edge fire-resistant technology, \u003cstrong\u003eFred\u003c\/strong\u003e provides unparalleled protection while maintaining the structural integrity of your building. Whether you’re working on new builds or retrofits, \u003cstrong\u003eFred\u003c\/strong\u003e delivers exceptional safety and peace of mind.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFire-Resistant Protection for Spray Foam\u003c\/strong\u003e: Fred is specifically designed to provide effective fire resistance when applied over spray foam insulation, a material often vulnerable to fire risks. It helps prevent the spread of fire, giving added security to energy-efficient construction projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdeal for Timber Structures\u003c\/strong\u003e: Fred is also an excellent solution for timber frame buildings, offering a protective barrier that significantly reduces the risk of fire damage. This ensures compliance with fire safety regulations while preserving the natural appeal of timber construction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple Application\u003c\/strong\u003e: Available as a liquid-applied product, Fred can be sprayed directly onto surfaces, ensuring seamless coverage and a uniform protective layer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-Toxic and Eco-Friendly\u003c\/strong\u003e: Formulated with low VOCs and environmentally-friendly components, making it safe for use in all types of buildings, including those aiming for Net Zero and Passivhaus standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTested and Certified\u003c\/strong\u003e: Fred meets the strictest fire safety standards, ensuring your project is compliant with the latest building regulations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFRED is certified Class A2-s1,d0.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFRED has been fire tested by Warringtonfire on 11mm OSB. We rate it at \u003cstrong\u003e15 minutes\u003c\/strong\u003e of fire protection on 11mm OSB, a deliberate safety margin below the tested result.\u003c\/p\u003e\n\u003cp\u003eFRED is used inside. In case of external application, it should be coated with a fire retarding flexible coating such as Passive Purple External or local building regulations need to be followed.\u003c\/p\u003e\n\u003cp\u003eFred has been tested as part of a system by UKTC on a non-load-bearing partition wall filled with 140mm closed-cell polyurethane foam, assembly when classified in accordance  \u003cstrong\u003eBS EN 13501-2:2023 as E20, EL20, EW20\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis testing means Fred, as part of the system, will have,\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eE20 - Integrity for 20 minutes\u003c\/strong\u003e - The barrier stops the physical passage of flames, smoke, and hot toxic gases.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEW20 - Integrity \u0026amp; Radiation Control for 20 minutes\u003c\/strong\u003e - Like E20 it blocks flames and smoke. However, it adds a layer of safety by restricting radiant heat transmission.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEL20 - Integrity \u0026amp; Full Insulation\u003c\/strong\u003e - This is the highest class of fire protection. It blocks flames and smoke, while completely insulating against heat transfer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIf Fred is to be spray applied, it must be applied with an intumescent spray machine. Intelligent Membranes would recommend a TriTech T5 spray machine or a machine with similar specifications.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso available in white and gray – please telephone Intelligent Membranes to discuss these other colors\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv style=\"border-top: 2px solid #b5985a; margin-top: 28px; padding-top: 18px;\"\u003e\n\u003ch2 style=\"color: #4a1a6e;\"\u003eSpray foam thermal barrier: the Class B build-up\u003c\/h2\u003e\n\u003cp\u003eExposed spray foam is combustible; on its own it typically classifies as Euroclass E, so building control and insurers normally require a fire-rated thermal barrier over it. FRED is Intelligent Membranes' intumescent thermal barrier for the job, tested in the UK and EU to EN 13501-1. Applied as a build-up of \u003cstrong\u003espray foam → Supergrip FR fire-rated primer → FRED\u003c\/strong\u003e, it brings exposed foam up to a \u003cstrong\u003eClass B reaction to fire\u003c\/strong\u003e, while FRED itself is certified Class A2-s1,d0. \u003ca href=\"\/en-us\/blogs\/educational\/spray-foam-fire-protection-thermal-barrier-fred\" title=\"Spray Foam Fire Protection: How Foam, Primer and FRED Achieve Class B\"\u003eRead the full spray-foam fire-protection guide →\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-top: 2px solid #b5985a; margin-top: 28px; padding-top: 18px;\"\u003e\n\u003ch2 style=\"color: #4a1a6e;\"\u003eRelated Guides\u003c\/h2\u003e\n\u003cp\u003eHelpful guides related to this product:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-us\/blogs\/educational\/spray-foam-fire-protection-thermal-barrier-fred\" title=\"Spray Foam Fire Protection: How Foam, Primer and FRED Achieve Class B\"\u003eSpray Foam Fire Protection: How Foam, Primer and FRED Achieve Class B\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-us\/blogs\/educational\/intumescent-paint-explained\" title=\"Intumescent Paint Explained: How Fire Retardant Coatings Protect Timber and Spray Foam\"\u003eIntumescent Paint Explained: How Fire Retardant Coatings Protect Timber and Spray Foam\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-us\/blogs\/educational\/fire-protection-for-timber-frame-and-spray-foam\" title=\"Fire Protection for Timber Frame and Spray Foam\"\u003eFire Protection for Timber Frame and Spray Foam\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-us\/blogs\/educational\/understanding-our-certifications-and-what-they-mean-for-you\" title=\"Understanding Our Certifications and What They Mean for You\"\u003eUnderstanding Our Certifications and What They Mean for You\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eQuality assurance:\u003c\/strong\u003e \u003ca href=\"\/en-us\/pages\/qa-sign-off-downloads\"\u003eDownload the free Installation \u0026amp; QA Record sign-off sheet (IM-QA-12)\u003c\/a\u003e for this product.\u003c\/p\u003e","brand":"Intelligent Membranes","offers":[{"title":"Orange","offer_id":52608800751956,"sku":"IM\/00FRED10ORANGE","price":150.0,"currency_code":"GBP","in_stock":true},{"title":"White","offer_id":52608800784724,"sku":"IM\/00FRED10WHITE","price":150.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/2104\/7636\/files\/FRED.png?v=1792502546"},{"product_id":"facade-waterproofing-membrane-5kg","title":"Passive Purple External Airtight Fire Rated Façade Waterproofing Membrane (5kg) - Purple Brush","description":"\u003cp\u003e\u003cspan data-teams=\"true\"\u003ePassive Purple External Brush, specifically designed to seal joints and gaps with precision and durability. This advanced liquid-applied weather barrier is perfect for external applications where airtightness and weather protection are critical. The brush version contains specialized fibers, allowing it to span larger gaps and joints, delivering exceptional coverage and performance in challenging areas.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"border-top: 2px solid #b5985a; margin-top: 28px; padding-top: 18px;\"\u003e\n\u003ch2 style=\"color: #4a1a6e;\"\u003eTested \u0026amp; Certified - fire-rated, watertight \u0026amp; breathable\u003c\/h2\u003e\n\u003cp\u003eIndependently certified to both European (EN) and US (ASTM) standards:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReaction to fire Euroclass B-s1,d0\u003c\/strong\u003e (EN 13501-1, on A1 substrates ≥653 kg\/m³) \u0026amp; \u003cstrong\u003eASTM E84 Class A\u003c\/strong\u003e (Flame Spread 0 \/ Smoke 15)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWatertight Class W1\u003c\/strong\u003e (EN 13859-2) \u0026amp; water permeability Class W3 (EN 1062-3); near-zero water absorption (EN 16302)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreathable \/ vapor-open\u003c\/strong\u003e - Sd ≈ 0.6 m (EN ISO 12572)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrack-bridging\u003c\/strong\u003e A3 (23°C) \/ A4 (-10°C) (EN 1062-7) \u0026amp; CO₂ \/ carbonation barrier Class C1 (EN 1062-6)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUV-stable\u003c\/strong\u003e (strength increases after 500 h UV) · low-emission \u003cstrong\u003eEMICODE EC2\u003c\/strong\u003e · anti-fungus (rating 0)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKiwa BDA Agrément\u003c\/strong\u003e (BAW-21-214-P-A-UK) · Passive House component (phB) · US ICC-ES AC212 water-resistive barrier\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"\/en-us\/pages\/passive-purple-tested-certified\" title=\"Tested \u0026amp; Certified\"\u003eSee all test data \u0026amp; certifications →\u003c\/a\u003e · read about \u003ca href=\"\/en-us\/blogs\/educational\/passive-purple-external-fire-class-b-watertight-breathable\"\u003ePassive Purple External\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-top: 2px solid #b5985a; margin-top: 28px; padding-top: 18px;\"\u003e\n\u003ch2 style=\"color: #4a1a6e;\"\u003eRelated Guides\u003c\/h2\u003e\n\u003cp\u003eHelpful guides related to this product:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-us\/blogs\/educational\/airtight-and-vapour-control-for-high-rise-re-cladding-installed-from-the-outside-i\" title=\"Airtight and Vapor Control for High-Rise Re-Cladding\"\u003eAirtight and Vapor Control for High-Rise Re-Cladding\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-us\/blogs\/educational\/what-is-airtightness-and-why-it-matters-for-net-zero-buildings\" title=\"What is Airtightness (and Why It Matters for Net Zero Buildings)\"\u003eWhat is Airtightness (and Why It Matters for Net Zero Buildings)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-us\/blogs\/news\/damp-walls-two-breathable-solutions-that-actually-work\" title=\"Damp Walls? Two Breathable Solutions That Actually Work\"\u003eDamp Walls? Two Breathable Solutions That Actually Work\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eQuality assurance:\u003c\/strong\u003e \u003ca href=\"\/en-us\/pages\/qa-sign-off-downloads\"\u003eDownload the free Installation \u0026amp; QA Record sign-off sheet (IM-QA-05)\u003c\/a\u003e for this product.\u003c\/p\u003e","brand":"Intelligent Membranes","offers":[{"title":"Purple","offer_id":52682707665236,"sku":"IM\/00PPEB5","price":55.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/2104\/7636\/files\/Passive_Purple_External_Brush.png?v=1792744807"},{"product_id":"brush-applied-facade-waterproofing-membrane-5kg-bundle","title":"Passive Purple External Brush Pack","description":"\u003cspan lang=\"EN-GB\"\u003eExcelling characteristics of passive purple external: \u003c\/span\u003e\r\n\u003cul type=\"disc\"\u003e\r\n \t\u003cli\u003e\u003cspan lang=\"EN-GB\"\u003eFireclass B\u003c\/span\u003e\u003c\/li\u003e\r\n \t\u003cli\u003e\u003cspan lang=\"EN-GB\"\u003eRaintight but vapor breathable\u003c\/span\u003e\u003c\/li\u003e\r\n \t\u003cli\u003e\u003cspan lang=\"EN-GB\"\u003eAirtight\u003c\/span\u003e\u003c\/li\u003e\r\n \t\u003cli\u003e\u003cspan lang=\"EN-GB\"\u003eUV resistant\u003c\/span\u003e\u003c\/li\u003e\r\n \t\u003cli\u003e\u003cspan lang=\"EN-GB\"\u003eAnti fungus\u003c\/span\u003e\u003c\/li\u003e\r\n \t\u003cli\u003e\u003cspan lang=\"EN-GB\"\u003eSelfcleaning \/ reduced dirt pickup caused by UV netting\u003c\/span\u003e\u003c\/li\u003e\r\n \t\u003cli\u003e\u003cspan lang=\"EN-GB\"\u003eCrackbridging\u003c\/span\u003e\u003c\/li\u003e\r\n \t\u003cli\u003e\u003cspan lang=\"EN-GB\"\u003eCarbonatation block (for concrete); realkalizing (concrete)\u003c\/span\u003e\u003c\/li\u003e\r\n \t\u003cli\u003e\u003cspan lang=\"EN-GB\"\u003eProtection against salts (for roads) (concrete structures).\u003c\/span\u003e\u003c\/li\u003e\r\n \t\u003cli\u003eCan also be used a as a protective coating on concrete as antiacrbonatation on concrete \/ cementcoating.\u003c\/li\u003e\r\n \t\u003cli\u003e1kg will cover 1m2\u003c\/li\u003e\r\n\u003c\/ul\u003e\n\u003cdiv style=\"border-top:2px solid #b5985a;margin-top:28px;padding-top:18px;\"\u003e\n\u003ch2 style=\"color:#4a1a6e;\"\u003eRelated Guides\u003c\/h2\u003e\n\u003cp\u003eHelpful guides related to this product:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-us\/blogs\/educational\/airtight-and-vapour-control-for-high-rise-re-cladding-installed-from-the-outside-i\" title=\"Airtight and Vapor Control for High-Rise Re-Cladding\"\u003eAirtight and Vapor Control for High-Rise Re-Cladding\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-us\/blogs\/educational\/what-is-airtightness-and-why-it-matters-for-net-zero-buildings\" title=\"What is Airtightness (and Why It Matters for Net Zero Buildings)\"\u003eWhat is Airtightness (and Why It Matters for Net Zero Buildings)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Intelligent Membranes","offers":[{"title":"Default Title","offer_id":52608802062676,"sku":"IM\/00PPEBRB","price":64.98,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/2104\/7636\/files\/passive_purple_external_brush_pack.png?v=1793205418"},{"product_id":"passive-purple-external-bundle","title":"Passive Purple External Bundle","description":"\u003cp\u003eThe \u003cstrong\u003ePassive Purple External Bundle\u003c\/strong\u003e combines our Fire Class B, liquid-applied airtight and weatherproof façade membrane in one complete pack for external airtightness and weather protection. Raintight yet vapor-breathable, it is ideal for timber frame, retrofit and high-performance façade projects.\u003c\/p\u003e\n\u003cdiv style=\"border-top:2px solid #b5985a;margin-top:28px;padding-top:18px;\"\u003e\n\u003ch2 style=\"color:#4a1a6e;\"\u003eRelated Guides\u003c\/h2\u003e\n\u003cp\u003eHelpful guides related to this product:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-us\/blogs\/educational\/airtight-and-vapour-control-for-high-rise-re-cladding-installed-from-the-outside-i\" title=\"Airtight and Vapor Control for High-Rise Re-Cladding\"\u003eAirtight and Vapor Control for High-Rise Re-Cladding\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-us\/blogs\/educational\/what-is-airtightness-and-why-it-matters-for-net-zero-buildings\" title=\"What is Airtightness (and Why It Matters for Net Zero Buildings)\"\u003eWhat is Airtightness (and Why It Matters for Net Zero Buildings)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-us\/blogs\/news\/damp-walls-two-breathable-solutions-that-actually-work\" title=\"Damp Walls? Two Breathable Solutions That Actually Work\"\u003eDamp Walls? Two Breathable Solutions That Actually Work\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Intelligent Membranes","offers":[{"title":"Default Title","offer_id":52608802095444,"sku":"IM\/00PPEB","price":564.93,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/2104\/7636\/files\/passive_purple_external_bundle_v3.png?v=1793205381"},{"product_id":"passive-purple-x-fire-class-b-airtight-paint-5kg","title":"Passive Purple X (5kg) Brush Applied","description":"\u003cp\u003e\u003cspan lang=\"EN-GB\"\u003eKey characteristics of Passive Purple X (shares Passive Purple External's certified performance): \u003c\/span\u003e\u003c\/p\u003e\n\u003cul type=\"disc\"\u003e\n\u003cli\u003e\u003cspan lang=\"EN-GB\"\u003eRaintight but vapor breathable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan lang=\"EN-GB\"\u003eAirtight\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan lang=\"EN-GB\"\u003eUV resistant\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan lang=\"EN-GB\"\u003eAnti fungus\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan lang=\"EN-GB\"\u003eSelfcleaning \/ reduced dirt pickup caused by UV netting\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan lang=\"EN-GB\"\u003eCrackbridging\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan lang=\"EN-GB\"\u003eCarbonatation block (for concrete); realkalizing (concrete)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan lang=\"EN-GB\"\u003eProtection against salts (for roads) (concrete structures).\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eCan also be used as a protective coating on concrete as anti-carbonization on concrete \/ cement coating.\u003c\/li\u003e\n\u003cli\u003e1kg will cover 1m2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"border-top: 2px solid #b5985a; margin-top: 28px; padding-top: 18px;\"\u003e\n\u003ch2 style=\"color: #4a1a6e;\"\u003eTested \u0026amp; Certified — fire-rated, watertight \u0026amp; breathable\u003c\/h2\u003e\n\u003cp\u003ePassive Purple X shares the certified Passive Purple External performance, independently verified to both European (EN) and US (ASTM) standards:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e🔥 \u003cstrong\u003eReaction to fire Euroclass B-s1,d0\u003c\/strong\u003e (EN 13501-1, on A1 substrates ≥653 kg\/m³) \u0026amp; \u003cstrong\u003eASTM E84 Class A\u003c\/strong\u003e (Flame Spread 0 \/ Smoke 15)\u003c\/li\u003e\n\u003cli\u003e💧 \u003cstrong\u003eWatertight Class W1\u003c\/strong\u003e (EN 13859-2) \u0026amp; water permeability Class W3 (EN 1062-3)\u003c\/li\u003e\n\u003cli\u003e🌬️ \u003cstrong\u003eBreathable \/ vapor-open\u003c\/strong\u003e — Sd ≈ 0.6 m (EN ISO 12572)\u003c\/li\u003e\n\u003cli\u003e🧱 \u003cstrong\u003eCrack-bridging\u003c\/strong\u003e A3 (23°C) \/ A4 (-10°C) (EN 1062-7) \u0026amp; CO₂ \/ carbonation barrier Class C1 (EN 1062-6)\u003c\/li\u003e\n\u003cli\u003e🇬🇧 \u003cstrong\u003eKiwa BDA Agrément\u003c\/strong\u003e (BAW-21-214-P-A-UK) · Passive House component (phB) · US ICC-ES AC212\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"\/en-us\/pages\/passive-purple-tested-certified\" title=\"Tested \u0026amp; Certified\"\u003eSee all test data \u0026amp; certifications →\u003c\/a\u003e · \u003ca href=\"\/en-us\/blogs\/educational\/passive-purple-external-fire-class-b-watertight-breathable\"\u003ePassive Purple External explained\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-top: 2px solid #b5985a; margin-top: 28px; padding-top: 18px;\"\u003e\n\u003ch2 style=\"color: #4a1a6e;\"\u003eRelated Guides\u003c\/h2\u003e\n\u003cp\u003eHelpful guides related to this product:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-us\/blogs\/educational\/airtight-and-vapour-control-for-high-rise-re-cladding-installed-from-the-outside-i\" title=\"Airtight and Vapor Control for High-Rise Re-Cladding\"\u003eAirtight and Vapor Control for High-Rise Re-Cladding\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-us\/blogs\/news\/the-airtightness-challenge-facing-modern-construction-why-blockwork-alone-is-no-longer-enough\" title=\"The Airtightness Challenge: Why Blockwork Alone Is No Longer Enough\"\u003eThe Airtightness Challenge: Why Blockwork Alone Is No Longer Enough\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-us\/blogs\/news\/how-to-retrofit-vapour-control-without-the-mess-bba-approved-passivhaus-certified-building-control-ready\" title=\"How to Retrofit Vapor Control Without the Mess\"\u003eHow to Retrofit Vapor Control Without the Mess\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eQuality assurance:\u003c\/strong\u003e \u003ca href=\"\/en-us\/pages\/qa-sign-off-downloads\"\u003eDownload the free Installation \u0026amp; QA Record sign-off sheet (IM-QA-06)\u003c\/a\u003e for this product.\u003c\/p\u003e","brand":"Intelligent Membranes","offers":[{"title":"Purple","offer_id":52682702258516,"sku":"IM\/00PPXB5PURPLE","price":55.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/2104\/7636\/files\/Passive_Purple_External_Brush_2.png?v=1792672914"},{"product_id":"passive-purple-x-10kg-white-spray-roller","title":"Passive Purple X (10kg) - Spray\/Roller","description":"\u003ch2\u003eWhat is Passive Purple X and How Does it Work?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePassive Purple X\u003c\/strong\u003e is a \u003cstrong\u003efire-rated, airtight, watertight and breathable liquid membrane\u003c\/strong\u003e for new-build projects. It is \u003cstrong\u003espray or roller-applied\u003c\/strong\u003e to form one seamless coating, replacing the separate layers and laps of a traditional membrane.\u003c\/p\u003e\n\u003cp\u003eApplied \u003cstrong\u003einternally or externally\u003c\/strong\u003e, it stops air and rain getting through while allowing water vapor to escape, so the building fabric can dry out. It's available in \u003cstrong\u003ewhite, cream, black or purple\u003c\/strong\u003e and shares the certified performance of \u003ca href=\"\/en-us\/products\/passive-purple-external-airtight-fire-rated-facade-waterproofing-membrane-10kg-cream-spray-roller\" title=\"Passive Purple External\"\u003ePassive Purple External\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eWhy Breathable Airtight Paint?\u003c\/h2\u003e\n\u003cp\u003eTrapped moisture can damage the building fabric, so a wall needs to keep out air and rain while still being able to dry. Using separate products for fire, water, air and vapor also creates more interfaces where a detail can fail.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePassive Purple X brings those functions together in one continuous layer.\u003c\/strong\u003e With a vapor resistance of \u003cstrong\u003eSd ≈ 0.6 m\u003c\/strong\u003e, it lets moisture escape while the coating sheds rain.\u003c\/p\u003e\n\u003cp\u003eIt isn't a vapor control layer. Where your design needs one, use \u003ca href=\"\/en-us\/products\/passive-purple-internal-airtight-vapour-control-paint-11-4kg\" title=\"Passive Purple\"\u003ePassive Purple\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eSpray \/ Roller or Brush Application\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpray application:\u003c\/strong\u003e Using an airless machine, one installer can cover up to \u003cstrong\u003e300 m² per day\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoller application:\u003c\/strong\u003e Ideal if you don't have a spray machine to hand.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-us\/products\/passive-purple-x-fire-class-b-airtight-paint-5kg\" title=\"Passive Purple X Brush\"\u003e\u003cstrong\u003eBrush application (Passive Purple X Brush):\u003c\/strong\u003e\u003c\/a\u003e A 5kg brush-applied version.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSuitability of Passive Purple X\u003c\/h2\u003e\n\u003cp\u003ePassive Purple X is designed primarily for \u003cstrong\u003enew builds\u003c\/strong\u003e, for internal and external use, and can be applied to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eConcrete, brick and concrete block (CMU)\u003c\/li\u003e\n\u003cli\u003eOSB and engineered timber panels\u003c\/li\u003e\n\u003cli\u003eFiber cement boards and drywall (gypsum board)\u003c\/li\u003e\n\u003cli\u003eInsulation panels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWorking on an existing building?\u003c\/strong\u003e Take a look at \u003ca href=\"\/en-us\/products\/passive-purple-retrofit-airtightness-10kg\" title=\"Passive Purple Retrofit\"\u003ePassive Purple Retrofit\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFire rating:\u003c\/strong\u003e The Euroclass B-s1,d0 classification applies on A1 substrates with a density of at least 653 kg\/m³. The designer and building control body should confirm suitability against the building's fire strategy.\u003c\/p\u003e\n\u003ch2\u003eThe Benefits of Passive Purple X\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eFire rated:\u003c\/strong\u003e Euroclass B-s1,d0 on qualifying substrates and ASTM E84 Class A\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eAirtight and smoke-tight:\u003c\/strong\u003e One continuous, seamless layer\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eWatertight but breathable:\u003c\/strong\u003e Keeps rain out and lets vapor escape\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eCrack-bridging:\u003c\/strong\u003e Tested at 23°C and -10°C\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eUV-stable:\u003c\/strong\u003e Tensile strength increases after 500 hours of UV exposure\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eProtects concrete:\u003c\/strong\u003e Class C1 CO₂ and carbonation barrier\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eWater-based and low emission:\u003c\/strong\u003e EMICODE EC2 rated\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAirtightness and Breathability, Explained\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is airtightness?\u003c\/strong\u003e Controlling unintended air leakage through the building fabric.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat does breathable mean?\u003c\/strong\u003e Water vapor can pass through the membrane, while liquid water and air can't.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat are the airtightness standards?\u003c\/strong\u003e New homes in England must achieve 8 m³\/(h·m²) at 50 Pa or better, while Passivhaus requires ≤0.6 ACH.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhy does it matter?\u003c\/strong\u003e Good airtightness reduces energy loss and improves comfort, while breathability allows the building fabric to dry.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePassive Purple X and Passivhaus\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is Passivhaus?\u003c\/strong\u003e A building standard focused on extreme energy efficiency and occupant comfort.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat are the five principles?\u003c\/strong\u003e Airtightness, insulation, high-performance glazing, thermal bridge-free design, and ventilation with heat recovery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is the certification?\u003c\/strong\u003e Passive Purple X shares Passive Purple External's Passive House Institute component certification, \u003cstrong\u003eClass phB\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePreparation \u0026amp; Application\u003c\/h2\u003e\n\u003cp\u003eGreat airtightness starts with the right prep:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRemove salt efflorescence, dust, loose material and standing water. Damp surfaces are fine.\u003c\/li\u003e\n\u003cli\u003eMake sure the surface is closed, filling holes and joints with a fast-setting cement-based product or polyurethane foam.\u003c\/li\u003e\n\u003cli\u003eDon't add water or solvents.\u003c\/li\u003e\n\u003cli\u003eDon't apply below 5°C (air and substrate temperature), in full sunlight or during rain.\u003c\/li\u003e\n\u003cli\u003eApply two coats, letting the first dry before applying the second.\u003c\/li\u003e\n\u003cli\u003eClean tools with water after use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow Much Will You Need?\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSubstrate\u003c\/th\u003e\n\u003cth\u003eApprox. coverage\u003c\/th\u003e\n\u003cth\u003ePer 10kg tub\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOSB and drywall\u003c\/td\u003e\n\u003ctd\u003e0.8–1.0 kg\/m²\u003c\/td\u003e\n\u003ctd\u003e10–12 m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConcrete block and brickwork\u003c\/td\u003e\n\u003ctd\u003e1.0–1.2 kg\/m²\u003c\/td\u003e\n\u003ctd\u003e8–10 m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eCoverage varies with substrate type, porosity and surface condition. Use a wet film gauge to check thickness during application.\u003c\/p\u003e\n\u003cdiv style=\"border-top: 2px solid #b5985a; margin-top: 28px; padding-top: 18px;\"\u003e\n\u003ch2 style=\"color: #4a1a6e;\"\u003eTested \u0026amp; Certified\u003c\/h2\u003e\n\u003cp\u003ePassive Purple X shares the certified performance of Passive Purple External, independently verified to European (EN) and US (ASTM) standards:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReaction to fire:\u003c\/strong\u003e Euroclass B-s1,d0 (EN 13501-1, on A1 substrates ≥653 kg\/m³) and ASTM E84 Class A (Flame Spread 0, Smoke 15)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWatertight:\u003c\/strong\u003e Class W1 (EN 13859-2), water permeability Class W3 (EN 1062-3) and near-zero water absorption (EN 16302)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreathable:\u003c\/strong\u003e Sd ≈ 0.6 m (EN ISO 12572)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrack-bridging:\u003c\/strong\u003e A3 at 23°C and A4 at -10°C (EN 1062-7)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbonation barrier:\u003c\/strong\u003e CO₂ Class C1 (EN 1062-6)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdhesion:\u003c\/strong\u003e Up to 1.23 N\/mm² on CLT (EN ISO 4624)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow emission:\u003c\/strong\u003e EMICODE EC2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-fungus:\u003c\/strong\u003e Rating 0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKiwa BDA Agrément:\u003c\/strong\u003e BAW-21-214-P-A-UK, with assessed durability of around 60 years\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePassive House component:\u003c\/strong\u003e Class phB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUS water-resistive barrier:\u003c\/strong\u003e ICC-ES AC212\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"\/en-us\/pages\/passive-purple-tested-certified\" title=\"Tested \u0026amp; Certified\"\u003eSee all test data \u0026amp; certifications →\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-top: 2px solid #b5985a; margin-top: 28px; padding-top: 18px;\"\u003e\n\u003ch2 style=\"color: #4a1a6e;\"\u003eRelated Guides\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-us\/blogs\/educational\/passive-purple-external-fire-class-b-watertight-breathable\" title=\"Passive Purple External: Fire Class B, Watertight and Breathable\"\u003ePassive Purple External: Fire Class B, Watertight and Breathable\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-us\/blogs\/educational\/airtight-and-vapour-control-for-high-rise-re-cladding-installed-from-the-outside-i\" title=\"Airtight and Vapor Control for High-Rise Re-Cladding\"\u003eAirtight and Vapor Control for High-Rise Re-Cladding\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-us\/blogs\/news\/the-airtightness-challenge-facing-modern-construction-why-blockwork-alone-is-no-longer-enough\" title=\"The Airtightness Challenge: Why Blockwork Alone Is No Longer Enough\"\u003eThe Airtightness Challenge: Why Blockwork Alone Is No Longer Enough\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eQuality assurance:\u003c\/strong\u003e \u003ca href=\"\/en-us\/pages\/qa-sign-off-downloads\"\u003eDownload the free Installation \u0026amp; QA Record sign-off sheet (IM-QA-06)\u003c\/a\u003e for this product.\u003c\/p\u003e\n\u003ch2\u003eConnect the Membrane at Windows and Junctions\u003c\/h2\u003e\n\u003cp\u003ePlan the adjoining tape detail as well as the coated area. Our \u003ca href=\"\/en-us\/blogs\/educational\/airtightness-tape-guide\"\u003eairtightness tape guide\u003c\/a\u003e covers width and substrate selection, while \u003ca href=\"\/en-us\/blogs\/educational\/airtightness-tape-vs-liquid-airtight-membrane\"\u003etape versus liquid membrane\u003c\/a\u003e explains compatible interfaces, preparation and inspection. Use the specified coating-to-tape detail and check continuity before covering.\u003c\/p\u003e","brand":"Intelligent Membranes","offers":[{"title":"White","offer_id":52683125358932,"sku":"IM\/00PPXS10WHITE","price":119.99,"currency_code":"GBP","in_stock":true},{"title":"Cream","offer_id":52683125260628,"sku":"IM\/00PPXS10CREAM","price":119.99,"currency_code":"GBP","in_stock":true},{"title":"Black","offer_id":52683125293396,"sku":"IM\/00PPXS10BLACK","price":119.99,"currency_code":"GBP","in_stock":true},{"title":"Purple","offer_id":52683125326164,"sku":"IM\/00PPXS10PURPLE","price":119.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/2104\/7636\/files\/Passive_Purple_X_3.png?v=1792672329"},{"product_id":"passive-purple-external-airtight-fire-rated-facade-waterproofing-membrane-10kg-cream-spray-roller","title":"Passive Purple External Airtight Fire Rated Façade Waterproofing Membrane (10kg) - Spray \/ Roller","description":"\u003ch3\u003eKey Characteristics of Passive Purple External\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003ePassive Purple External\u003c\/strong\u003e is a \u003cstrong\u003eFire Class B (Euroclass B-s1,d0) liquid-applied airtight paint\u003c\/strong\u003e for both \u003cstrong\u003einternal and external applications\u003c\/strong\u003e. It combines airtightness, weather protection, and intelligent moisture management in a single certified solution.\u003c\/p\u003e\n\u003ch4\u003eKey Benefits \u0026amp; Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFire Class B\u003c\/strong\u003e – exceptional fire resistance, setting it apart from standard membranes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRaintight \u0026amp; Vapor Breathable\u003c\/strong\u003e – keeps water out while allowing moisture to escape, ensuring a healthy building fabric.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirtight \u0026amp; Smoke-Tight\u003c\/strong\u003e – delivers a complete barrier to uncontrolled air leakage and smoke movement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUV Resistant \u0026amp; Self-Cleaning\u003c\/strong\u003e – long-term durability with reduced dirt pickup and surface staining.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Fungus Protection\u003c\/strong\u003e – prevents mold growth and safeguards indoor air quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrack-Bridging\u003c\/strong\u003e – maintains airtightness even where movement or minor cracks occur.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConcrete Protection\u003c\/strong\u003e – blocks carbonation, provides realkalization, and shields against salts from roads and de-icing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Purpose\u003c\/strong\u003e – suitable for \u003cstrong\u003einternal and external\u003c\/strong\u003e applications across retrofit and new-build projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntelligent Moisture Management\u003c\/strong\u003e – allows the substrate to breathe, balancing vapor openness with airtight performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith \u003cstrong\u003ePassive Purple External\u003c\/strong\u003e, you get \u003cstrong\u003eairtightness, weather resistance, and long-term structural protection\u003c\/strong\u003e in one advanced, certified liquid membrane, ideal for timber frame, retrofit, and high-performance construction projects.\u003c\/p\u003e\n\u003cdiv style=\"border-top: 2px solid #b5985a; margin-top: 28px; padding-top: 18px;\"\u003e\n\u003ch2 style=\"color: #4a1a6e;\"\u003eTested \u0026amp; Certified - fire-rated, watertight \u0026amp; breathable\u003c\/h2\u003e\n\u003cp\u003eIndependently certified to both European (EN) and US (ASTM) standards:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReaction to fire Euroclass B-s1,d0\u003c\/strong\u003e (EN 13501-1, on A1 substrates ≥653 kg\/m³) \u0026amp; \u003cstrong\u003eASTM E84 Class A\u003c\/strong\u003e (Flame Spread 0 \/ Smoke 15)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWatertight Class W1\u003c\/strong\u003e (EN 13859-2) \u0026amp; water permeability Class W3 (EN 1062-3); near-zero water absorption (EN 16302)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreathable \/ vapor-open\u003c\/strong\u003e - Sd ≈ 0.6 m (EN ISO 12572), so the wall dries outward\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrack-bridging\u003c\/strong\u003e A3 (23°C) \/ A4 (-10°C) (EN 1062-7) \u0026amp; CO₂ \/ carbonation barrier Class C1 (EN 1062-6)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUV-stable\u003c\/strong\u003e (strength increases after 500 h UV) · low-emission \u003cstrong\u003eEMICODE EC2\u003c\/strong\u003e · anti-fungus (rating 0)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKiwa BDA Agrément\u003c\/strong\u003e (BAW-21-214-P-A-UK) · Passive House component (phB) · US ICC-ES AC212 water-resistive barrier\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"\/en-us\/pages\/passive-purple-tested-certified\" title=\"Tested \u0026amp; Certified\"\u003eSee all test data \u0026amp; certifications →\u003c\/a\u003e · Read about \u003ca href=\"\/en-us\/blogs\/educational\/passive-purple-external-fire-class-b-watertight-breathable\"\u003ePassive Purple External\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-top: 2px solid #b5985a; margin-top: 28px; padding-top: 18px;\"\u003e\n\u003ch2 style=\"color: #4a1a6e;\"\u003e🌎 Tested for World Markets - ASTM (US) \u0026amp; EN (Europe)\u003c\/h2\u003e\n\u003cp\u003ePassive Purple External is fire-rated to \u003cstrong\u003eASTM E84 Class A (US)\u003c\/strong\u003e and \u003cstrong\u003eEN fire Class B (Europe)\u003c\/strong\u003e - tested to US ASTM standards alongside its European certifications so that the same fire-rated façade membrane can be specified on both sides of the Atlantic.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUS architects \u0026amp; specifiers: \u003ca href=\"\/en-us\/pages\/us-specifications\" title=\"US specifications in CSI MasterFormat\"\u003edownload the US specifications (CSI MasterFormat)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eUS supply \u0026amp; install: \u003ca href=\"\/en-us\/pages\/chicago\" title=\"Passive Purple Chicago — distributed and installed by WickRight\"\u003eWickRight, our Chicago distribution \u0026amp; installation partner\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eFire-rated range: \u003ca href=\"\/en-us\/collections\/fire-protection\" title=\"Fire protection collection\"\u003eshop the full fire protection collection\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-top: 2px solid #b5985a; margin-top: 28px; padding-top: 18px;\"\u003e\n\u003ch2 style=\"color: #4a1a6e;\"\u003eRelated Guides\u003c\/h2\u003e\n\u003cp\u003eHelpful guides related to this product:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-us\/blogs\/educational\/airtight-and-vapour-control-for-high-rise-re-cladding-installed-from-the-outside-i\" title=\"Airtight and Vapor Control for High-Rise Re-Cladding\"\u003eAirtight and Vapor Control for High-Rise Re-Cladding\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-us\/blogs\/educational\/what-is-airtightness-and-why-it-matters-for-net-zero-buildings\" title=\"What is Airtightness (and Why It Matters for Net Zero Buildings)\"\u003eWhat is Airtightness (and Why It Matters for Net Zero Buildings)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-us\/blogs\/news\/damp-walls-two-breathable-solutions-that-actually-work\" title=\"Damp Walls? Two Breathable Solutions That Actually Work\"\u003eDamp Walls? Two Breathable Solutions That Actually Work\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eQuality assurance:\u003c\/strong\u003e \u003ca href=\"\/en-us\/pages\/qa-sign-off-downloads\"\u003eDownload the free Installation \u0026amp; QA Record sign-off sheet (IM-QA-05)\u003c\/a\u003e for this product.\u003c\/p\u003e","brand":"Intelligent Membranes","offers":[{"title":"Purple","offer_id":52683132174676,"sku":"IM\/00PPE10PURPLE","price":119.99,"currency_code":"GBP","in_stock":true},{"title":"Black","offer_id":52683132141908,"sku":"IM\/00PPE10BLACK","price":119.99,"currency_code":"GBP","in_stock":true},{"title":"Cream","offer_id":52683132207444,"sku":"IM\/00PPE10CREAM","price":119.99,"currency_code":"GBP","in_stock":true},{"title":"White","offer_id":52683132240212,"sku":"IM\/00PPE10WHITE","price":119.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/2104\/7636\/files\/Passive_Purple_External_df111b0c-cf87-4d71-b782-77c1ea4093dd.png?v=1792499042"}],"url":"https:\/\/intelligentmembranes.com\/en-us\/collections\/fire-protection.oembed","provider":"Intelligent Membranes","version":"1.0","type":"link"}