Airtight Liquid Vapour Control - Passive Purple Brush

BBA Certified, brush-applied Vapour Control Membrane for Connections and Service Penetrations. Use on multiple surfaces.

Passive Purple is a VOC-free water-based product. It’s completely free of any nasty chemicals or fumes. What’s more, as a water-based product, cleaning your paintbrushes and airless spray device is a smooth, no mess task.

For small projects, such as private houses, the Passive Purple Home Pack can be used with a flat paintbrush. In this case, an airless spray device is not needed.

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.

With its fibre reinforced polymer technology, Passive Purple Brush can bridge gaps of up to 7mm – 10mm. ideally you want the structure to have as little gaps in as possible to save time and cost on materials. once all connections, joints, boards and penetrations are complete and located, simply use a firm paint brush to fill and seal over the gaps and joints. this alone will reduce air leakage an enormous amount leaving your final spray coat ”if required” the icing on the cake. With a filler style technique and putty like consistency, Passive Purple Brush is extremely easy and fast to apply with no surface or area a problem. Head over to YouTube or click the left hand video bar to take a look.