Verified by manufacturer 1 day ago
EPD
Certificate type
BBA Agrément Certificate
Certificate type
BBA Agrément Certificate
Certificate type
Spray/ roll applied airtight vapour control membrane (AVCM) forms a permanent, continuous, flexible airtight seal and vapour control on any substrate.
Passive Purple Airtight White – Airtight Membrane. The world’s most airtight liquid vapour control membrane. BBA Certified and Passivhaus Certified Airtight Vapour Control Membrane.
A polymer-based liquid which is applied with an airless spray device or roll applied and dries to form a permanent flexible airtight seal and vapour control layer. With excellent adhesion to most forms of construction substrates. Certified Airtightness of 0.03 ach on any substrate it is adhered to.
Passive Purple Airtight White adheres to any form of construction, allowing you to achieve maximum results for your desired goal. Once dry, Airtight White forms an extremely tough yet flexible polymer, water control membrane allowing it to move with the building settlement while also being super effective against impact damage. Airtight White, airtight membrane eliminates the inevitable rips, tears, unstuck tapes, staple holes, and many repairs you would expect to find on the classic paper membranes.
We have eradicated the need for paper, tapes and staples through this product, which eliminates all the problems that came with it (labour time, large quantity of damage repairs and waste material).
Airtight White is an airtight coating that is spray applied with an airless spray device. It is designed to cover all areas of an external envelope (warm side of the insulation) of a building, including difficult connections in floors, walls, roofs and joist areas. As long as Airtight White is used on the warm side of the insulation, it can be applied to either face of the external envelope.
The surface material where you apply Airtight White needs to be dust-free, solid and closed before starting the application. A closed surface implies that holes and joints need to be closed beforehand. Large holes and joints (> 5mm) can be closed with fast setting cement-based products or polyurethane foam. Small holes and joints (2-5mm) can be closed with Airtight White Liquid Brush. This is a much thicker (paintbrush applied version of Airtight White).
After these preparations, Airtight White radon barrier membrane can be sprayed with an airless paint spray device. This fast application method allows a single operative to apply up to 300 m² per day.
The wall/ceiling connections also need to be made airtight, especially when the connections are made of two different types of construction materials such as red brick/concrete or steel/concrete. Different construction materials react differently to changes in humidity and temperature, moving at different rates, which can lead to small cracks in plaster or another type of finishing. That movement can create air leaks that cause your building’s energy performance to suffer and potentially open the gateway for damp and mould to appear.
Both products can be used for these wall/ceiling connections: Airtight White vapour control membrane can be applied with an airless paint spray device. Or Airtight White Brush can be applied by brush. If you don’t have an airless sprayer but would still wish to install Airtight White yourself, don’t worry, we have a roller version for you. It may take a bit longer, but it gets the job done.
Pipe and wire penetrations can be the downfall of any air tightness testing. Airtight White and Airtight White Brush are applied around objects that penetrate any surface to the external envelope, sealing where most tapes and membranes fail.
Before you apply Airtight White or Airtight White Brush, first apply polyurethane foam around any penetrations. After hardening, remove the excess foam and apply a generous amount of Airtight White Brush with a flat paintbrush. In all cases, apply a sufficient, well-covering layer to guarantee airtightness and a strong radon barrier and vapour control membrane.
Airtight White can be applied (and is tested) on different construction materials such as concrete, brick, wood, PVC, aluminium and polyurethane foam. With a coat of Airtight White, the whole window/door reveal can be made airtight.
Working method: cut off the excess polyurethane foam, and apply Airtight White Brush.
Features and benefits:
Technical characteristics:
- Adhesion (to ISO 4624):
Air Leakage Protection
Leakage Protection
Air Protection
Vapour Protection
Spray Protection
Roller Protection
Protection Spray
Protection Barrier
Protection Layer
Vapour Control Protection
Moisture Protection
Fire Protection
BBA Protection
Passivhaus Protection
Seamless Protection
Radon Protection
Methane Protection
ICC 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
Color | White |
Finish | Other |
Material | Polymer |
Shape | Formless |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Warranty description | Lifetime |
Uniclass | |
CAWS | J41/395 Air and vapour control layer J42/395 Air and vapour control layer J21/395 Air and vapour control layer J31/330 Air and vapour control layer H30/261 Air and vapour control membrane H31/261 Air and vapour control membrane H11/785 Air and vapour control layer P10/60 Air and vapour control layer P10/310 Air and vapour control layer H30/30 Air and vapour control membrane H92/780 Air and vapour control layer |
SKU Code | IM/00AWS/10 |
Product range |
Classification data | |
Product reference | Airtight White: High-Performance -Fire Rated -Airtight & Vapour Control Membrane for Internal Applications. |
Material | Polymer. |
Purpose | Airtight vapour control membrane. |
Standard | To ISO 12572 and 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. |
Tear resistance | To EOTA TR008, Pass. Manufacturer guidanceResistance to fatigue movement. |
Elongation to break | To BS EN ISO 527-3, 350.5%. Manufacturer guidanceElongation after ageing. |
Resistant to underground gases | Radon diffusion coefficient (to K124/02/95): 3.3 x 10^-12. Methane permeability to ISO 15105, 62–75 cm³·mm/m²·day·atm. Guidance for specification option: See Passive Purple Radon Certificate (linked) for further details. |
Water vapour resistance (minimum) | µ-value to ISO 12572, 76584. SD-value to ISO 12572, 22.9 (at 0.3 mm dry thickness) and 34.4 (at 0.45 mm dry thickness). G-value: 4–200 MN·s/g. |
Fire performance | To BS EN 13501-1, class C-s1,d0. |
UV stabilization | Manufacturer guidanceConsult manufacturer for more details and insert requirements. |
Anti-static properties | Required. |
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 contentAs defined in clause 7.8 of BS EN ISO 14021 | 0%. |
Form | Liquid. |
Root inhibitor | Manufacturer guidanceConsult manufacturer for more details and insert requirements. |
Physical properties | |
Colour | White. Purple. Blue. Green. Orange. Red. Other. Guidance for specification option: Passive Purple and Passive Purple Editions can be made into other colours on demand Consult manufacturer for more details and insert requirements. |
Weight (minimum) | 1.2 kg/L. Manufacturer guidanceDensity. |
Drying time | 24–72 hours. Guidance for specification option: Depending on conditions. |
Adhesion | Adhesion of universal bonding compound on Passive Purple Internal Liquid: BS EN 14496, Pass. 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 ethylene propylene diene monomer (EPDM): to ISO 4624, adhesion value exceeding substrate strength. Adhesion on roofing: to ISO 4624, 1 N/mm². Adhesion of spray plaster on Passive Purple Interal Liquid: to ISO 4624, 1 N/mm². Adhesion on insulation Kingspan KoolTherm K5 polyurethane (PUR), Polystyrene (EPS) Polyisocyanurate (PIR): adhesion value exceeding substrate strength. |
Water penetration | To ASTM E331, all substrate meet ICC-ES AC212 criteria for acceptance. Manufacturer guidanceWater spray/ rain penetration. |
Watertightness | To EN 14891, Pass. |
Temperature resistance | -40°C to +70°C. Guidance for specification option: After drying. |
Dangerous substances | To EN ISO 16000-9/ 6, EN 717-1 and EN 180 16000-28, free from carcinogenics, ammonia and formaldehyde. |
Contains Red List materials | No |
Country of material origin | Europe |
Country of product manufacture | Europe |
Manufacturing plant location | |
Material | Polymer |
A1–A3 ('Production stage') | Embodied carbon as defined in BS EN 15804 |
Normalized unit | 0.33 kg CO₂ eq/kg |
Declared unit | 0.33 kg CO₂ eq/kg Certified Lower emissions |
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: Consult manufacturer. |
Expected Life | Lifetime |
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