Membrane systems
What is airtightness?
An airtight building envelope controls unwanted air movement through gaps, joints, and porous materials. This improves thermal insulation performance and makes mechanical ventilation systems more effective – especially in Passive House and high-performance builds.
Why airtightness matters
- Reduces uncontrolled heat loss and energy consumption
- Prevents moisture-laden air from condensing within structures
- Enhances thermal comfort and acoustic insulation
- Improves building durability and air quality
- Supports compliance with Passive House and NCC Section J requirements
The Pro Clima airtightness system includes:
INTELLO & INTELLO PLUS
Intelligent vapour control membranes.
AEROSANA VISCONN
Liquid-applied air barrier system for complex detailing.
TESCON tapes and adhesives
For joins, frames, and penetrations.
Primers and connection strips
For difficult substrates.
System-based performance.
These elements work together to form a flexible, continuous air barrier tailored to your wall, roof, or floor build-up. Installed correctly, they can dramatically increase both energy efficiency and long-term building resilience.
INTELLO® PLUS is a market leading intelligent air barrier for all construction types, providing superior energy and moisture control. INTELLO® PLUS maximises the performance of your thermal insulation, whilst restricting internal moisture entering the building envelope. INTELLO® PLUS is reinforced for strength and durability, utilising HydrosafeTM technology. This intelligent air barrier provides optimal protection against structural damage and mould, even in the event of unexpected moisture intrusion.
- Promotes superior drying capacity with HydrosafeTM technology
- Intelligent airtightness system (IAS) for warm, dry, healthy buildings
- Maximises the performance of thermal insulation
- Highly diffusion-resistant in winter
- Superior back-diffusion capacity in summer
INTELLO® conneX is the missing link for your Intelligent Air Barrier (IAB) system. It is designed to ensure the continuity of the INTELLO PLUS® IAB system at internal/external wall and midfloor junctions. With humidity variable functionality and UV stability for up to 90 days, it ensures the IAB system will perform for the life of the building.
- Solves the problem of challenging airtightness junctions
- Humidity variable functionality utilising Hydrosafe® technology
- UV stable for up to 90 days of exposure
- Available in multiple widths for differing applications
AEROSANA® VISCONN is a high-quality, water-based acrylic dispersion paste that can be applied as a spray or using a brush. The sprayed-on liquid film forms a seamless, elastic air- tight and vapour-retarding protective layer once it has dried. Sticks to all standard construction materials, all pro clima membranes and membranes made from aluminium and paper.
- Sprayable airtightness sealant with a humidity-variable sd value
- Reliable structures thanks to excellent adhesive properties
- Can be plastered/painted over
- Flexible use in indoor and protected outdoor areas thanks to its humidity-variable sd value
- Excellent values in the hazardous substance test
- For use as a humidity-variable vapour retarder and airtight layer that can be applied as a spray or using a brush on wall, ceiling and floor surfaces, such as non-plastered masonry or porous panel-form materials.
- AEROSANA® VISCONN can also be used:
- For creation of joints to components such as windows, roofs, walls, ceilings and floor
- For strengthening subsurfaces in the case of renovation
- On the interior and exterior of building components due to the product’s humidity-variable diffusion resistance