"breather membrane"

This Awkward Passivhaus design barrel roof made airtight with ease with Spray applied Airtight vapour control membrane Passive Purple.

An old block of apartments in Gt. Yarmouth getting a low carbon Retrofit for a higher, cleaner living standard and reduced energy bills. Passive Purple has been used externally on this huge scale block of apartments. with no margin for error and tricky details throughout, a liquid applied airtight membrane was the only way going forward. The building was being insulated externally and getting a whole new façade from render to aluminium panels. With the residents still inhabiting the building this had to be done quickly and easily with maximum results. Being a liquid applied airtight membrane, any cracks, gaps, and service penetration leaks in the existing building fabric quickly became thing of the past. That and the hundreds of Panel brackets being installed to support the new façade going on, this Retrofit had multiple penetrations and tricky details. Making good of the building fabric and awkward brackets with a near on impenetrable adhesion, Passive Purple made fast work of this great conversion, impossible for any other method. Being in liquid state on application, Passive Purple can be applied onto most/any surface (See data sheets for more information) and will find its way into all the unseeable tiny gaps and cracks all buildings will undoubtably have. Like this old pebble dashed façade, any rough, uneven and awkward areas are no longer an issue, our products simply flow into these areas. We also have the fibre reinforced Passive Purple brush, used on this job to prepare the brackets by filling the larger gaps between that of the bracket and the existing wall and also the large penetrating bolts. A huge win and demonstration of the power of liquid products by Intelligent Membranes.

Renovation stripping out the building completely and rebuilding the walls, Passive Purple® was applied in between the connections of the internal side of the external walls which were a combination of masonry, timber, and steel frame. The ground floor ceiling was removed exposing the warped old timber joists with cracks in the surrounding brickwork and mortar. This was given attention to detail using Passive Purple® Brush to seal above an airtight foam to guarantee the airtightness of this major air leak zone before the final spray coat of Passive Purple® airtight membrane was applied. Passive Purple® was also used to seal window and door linings, ready for the new triple glazed windows to go in. Passive Purple® was sprayed on all the walls and ceiling. This is an ongoing project that still is awaiting an air test, the client is looking to hit 2.5 ach and installing MVHR.

Case study of Rockwool and Passive Purple together in a system and how together they are the perfect match for airtight buildings.

This is a case study of a drop-down ceiling area in a large hospital. This area was sprayed with Passive Purple along all the ceiling joints and 1 and half meters around the opening of the building on all external facades. This project was actually a retrofit with an original air test score of 7. After the application of Passive Purple the score was down to 0.6.

We built the world first Passivhaus CPD training facility / pub, this is the worlds most airtight pub at 0.07ach at 50 pa. This is a twin wall timber frame, it’s 450mm wide insulation Huntsman which is made of thousands of recycled plastic bottles. Huntsman also recycled 1 billion plastic bottles from the sea last year. We have a 7.2 KW system solar panels system that powers the building, it’s got MVHR Nilan. On the external façade we applied Passive Purple External which is airtight up to 0.03ach.

Citu, Leeds - SIPS panels made 0.03ach on the fabric/joints/connections using PASSIVE PURPLE.

A case study of the use of Airtight White Intelligent Airtight Liquid Vapor Control