Efficient liquid vapour barrier for simple and secure airtightness

High airtightness requirements demand flexible solutions
The requirements for airtightness in modern construction are high – and especially around details, corners, and uneven surfaces, traditional membrane solutions can fall short. The liquid, spray-applied vapour barriers AEROSANA VISCONN and AEROSANA VISCONN FIBRE offer a flexible and efficient method for airtight sealing on timber and masonry structures where precision is critical. Both products are developed by German manufacturer pro clima, with BetaPack as the exclusive distributor in Denmark.

The membranes can be applied using an airless spray system, brush, or roller and work directly into the structure of the substrate. AEROSANA VISCONN provides a smooth, elastic seal, while the FIBRE version – with fibre reinforcement – can bridge cracks and joints of up to 20 mm.

Benefits of the spray-applied AEROSANA vapour barriers

• Fast and uniform application – ideal for details, corners, and complex transitions.
• Seals surfaces, fills joints, and primes substrates in a single operation.
• Excellent adhesion to most common construction substrates.
• Acts as a primer on clean, dust-free surfaces.
• Permanently elastic after curing and suitable for areas subject to movement.
• The FIBRE version handles cracks and tolerances of up to 20 mm.
• Ready to use directly from the container – no mixing required.
• Once dry, the surface can be plastered, painted, or taped, for example with alpha tapes.

The AEROFIXX spray gun makes application even faster and more precise, especially in corners, behind installations, and in other confined areas.

Both products are water-based and meet the strict low-emission requirements of the AgBB / ISO 16000 standards.

The latest generation is also frost-resistant down to –15 °C, making the membranes robust and easy to store on site all year round.

Typical applications

• Wall, ceiling, and floor junctions.
• Penetrations and installation zones.
• Uneven surfaces or details where traditional vapour barriers are difficult to use.
• Structures with tolerances or movement.
• Renovation projects where the substrate does not allow foil-based solutions.

With the combination of flexible application, strong adhesion, and documented performance, the AEROSANA system offers a reliable and practical solution for airtightness in both new construction and renovation projects.

Would you like to learn more about the AEROSANA VISCONN solutions?

BetaPack provides technical advice and product guidance for projects with high airtightness requirements. Please feel free to contact our experts Peter Buch Nielsen at pbn@betapack.dk or Per Sohn at ps@betapack.dk for further information.