Intelligent Membranes

Intelligent Membranes have the next generation of Liquid applied products.

Passive Purple, the world's first Passivhaus Certified Airtight Liquid Vapour control that can be brushed, sprayed, or roll applied

Passive Purple is unlike any air barrier - Vapour Control membrane you will come across and it needs no staples or tapes, unlike other brands of paper membranes. Passive Purple adheres to almost any surface and is already being using on large scale timber frame to multi storey concrete framed buildings.

Passive Purple is certified as a radon barrier, making it perfect for stopping nasty radon gases from entering your building

With a Passivhaus certified score of 0.03ach -- 20x lower than the required 0.6ach -- Passive Purple can guarantee you a score of 0.6ach (air changes per hour) and under

Passive Purple airtight liquid adheres to most substrates known to the construction industry. From Blockwork, Concrete, OSB, MgO Board, Spray applied & PIR insulation, Timber and Steel. A build with multiple substrate changes is an easy task to perform unlike traditional methods.

 Intelligent Membrane coatings are used to protect a range of materials, not only in building construction but also in heritage buildings using sustainable and VOC-free building membranes.

Our Passive Purple liquid membranes are BBA and Passivhaus certified: the Passivhaus Trust (PHT) is an independent industry-leading organization that promotes the reduction of a building’s ecological footprint.

Passive Purple External - Breathable fluid applied weatherproof facade membrane that is Class ASTM FIRE CLASS A.

• Passive Purple liquid airtight vapour control membrane is an airtight coating that is applied with an airless spray device on all areas of an external envelope (warm side of the insulation) of a building. This includes those difficult connection areas to the floor, wall, roof and joist.
• When Passive Purple is used on the warm side of the insulation, it can be applied to either face of the external envelope.
• To install Passive Purple, you simply need to ensure the material or surface is dust-free, solid and closed before starting the application.
• The wall and 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 and concrete or steel and concrete.
• Different construction materials react differently to changes in humidity, and temperature and move at different rates, which can lead to small cracks in plaster or another type of finishing. This can create air leaks that will cause the energy performance of your building to suffer and potentially opening the gateway for damp and mold to appear. Both airtight paints can be used for these wall to ceiling connections: Passive Purple spray-applied and Passive Purple brush.

The Intelligent Membranes products can be and have been implemented across a broad variety of sectors, from timber frame, and masonry construction to large-scale retrofit projects. We take pride in the fact that our products have been used for such a wide array of eco projects and continue to support builders, globally. 

We have Intelligent Airtight Fluid applied Passive Passive Purple 

Our Vapour open facade membrane - Passive Purple External 

Our World Famous breathable and vapour control membranes are now at the forefront of any Net Zero/Passivhaus or eco project

Fluid applied 

Airtight vapour control 

Intelligentmembranes.com