Independent, national technical approval, European: 
The INTELLO humidity-variable vapour retarder system has been awarded ETA approval

European Technical Assessment confirms high durability even under demanding conditions, as well as compatibility with DIN 68000-2

Long-term durability, even subject to extreme heat or cold: pro clima’s INTELLO and INTELLO PLUS airtight membranes are humidity-variable and very resilient. This has now been confirmed by independent technical testing by the German Institute for Construction Technology (DIBt).

“Our humidity-variable INTELLO and INTELLO PLUS vapour retarders, together with our DB+ product, were the first humidity-variable vapour retarders to receive national technical approval from the German Institute for Construction Technology (DIBt). These products have now been awarded approval in the European Technical Assessment (ETA). As a result, they now also have the required proof of durability demanded by DIN 68000-2 for vapour retarders with humidity-variable diffusion resistance,”

ays carpenter and construction engineer Michael Förster, head of Application Technology at pro clima.
Sicherheit in der Konstruktion Luftdichtungssystem INTELLO
Humidity-variable vapour retarder and airtight membranes. INTELLO – The high-performance system from pro clima for maximum reliability. Even on structures with demanding engineering conditions.

Advantages of humidity-variable vapour retarders: Maximum reliability for built structures

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Highest quality for airtightness – Components with Passive House certification make planning and installation easier

The INTELLO and AEROSANA VISCONN airtightness systems are Passive House certified

Particularly energy-efficient, permanent adhesion and reliable performance – these are the requirements that pro clima demands of its construction materials. After all, good buildings that provide healthy indoor environments can only be achieved if the quality level of the construction components is right. pro clima has this quality level checked at regular intervals by independent external bodies.

New: the AEROSANA VISCONN sprayable sealant is Passive House certified

The Passive House Institute has now confirmed that the new humidity-variable AEROSANA VISCONN airtightness sealant also fulfils its strict criteria and achieves the highest efficiency class of phA. This spray-on or brush-on airtightness sealant is proving very popular among installation technicians as its saves time and can be used flexibly. Thanks to its humidity-variable sd value, it can be used both indoors and outdoors. It can cover cracks and joints of up to 3 mm in width. If the system fleece is also used, then larger joints can also be dealt with. Once it has dried, AEROSANA VISCONN is permanently elastic and very resilient. It can also be plastered over without any problems.

Planners and architects are including the new AEROSANA VISCONN in their construction projects because they know that spraying or painting on provides reliable sealing for challenging detailed features. In addition, the humidity-variable diffusion resistance also provides better protection for building components. Installation technicians appreciate the ease of installation and the time savings compared to working with adhesive tapes. In this way, a seamless, sealed airtightness layer can be achieved for walls, ceilings and floors in a time-saving manner.

Just like the popular INTELLO airtight membrane, AEROSANA VISCONN too is humidity-variable. The sprayable sealant reacts to ambient humidity and adapts to the relevant conditions in an optimal manner. In this way, AEROSANA VISCONN and INTELLO can perform two functions: sealing to provide protection against moisture, while being extremely open to diffusion to allow for good drying out. As a result, building components are particularly well protected.

With INTELLO, winter building sites are not a problem

With a hydrosafe value of over 2 m, INTELLO protects insulation structures reliably – even if there is a lot of building moisture present due to plastering and the installation of screed, for example.
In addition, pro clima INTELLO is the first humidity-variable vapour retarder with European technical approval. There are a number of humidity-variable vapour retarders – Michael Förster (the head of Application Technology at pro clima) explains the differences between them in this video:

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Hydrosafe: Maximum protection for building components

Anyone who wants to plan, build or live in a building that is free from damage should choose a vapour retarder with an effective hydrosafe value. Hydrosafe? Yes, it sounds complicated but we’ll explain what it means in simple terms in these new proclima.tv videos:

  • Hydrosafe: Maximum protection
  • Some Interesting facts about hydrosafe:

    • Humidity-variable vapour retarders are particularly reliable.
    • Hydrosafe: Maximum protection thanks to a large spread in diffusion resistance value
    • Construction sites during winter months: A vapour retarder must
      1. be sufficiently impermeable = Protection against dampness
      2. but also be extremely permeable later = Maximum drying out
    • Hydrosafe value: sd of a vapour retarder for optimal protection for building components during construction period.
    • Hydrosafe => Maximum protection: against dampness + allows for good drying out
    • Better reliability thanks to vapour retarders with a suitable hydrosafe value.

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Flank diffusion – what it is and how to prevent it

pro clima clients ask – pro clima engineers answer

Airtightness is good, but it is not everything: there is also the matter of diffusion! When we speak of diffusion in civil engineering, we are referring to the gradual transport of moisture through a building component. This transport is driven by the pressure difference between the interior and exterior. As water molecules always want to move from warm environments into the cold, diffusion normally occurs from the inside to the outside in wintertime. A vapour retarder hinders the transport of these molecules.

Unforeseen: Entry of moisture through adjacent components

For example, if an interior wall penetrates through an insulation layer (the vapour retarder is cleanly attached to the wall on the left and right, i.e. everything is airtight), so-called flank diffusion can occur. The water vapour looks for the path of least resistance – which in this case is the interior wall. In the case of structures that are open to diffusion on the outside, this may represent a manageable risk. However, if the structure is impermeable to diffusion on the outside, moisture problems can soon occur. After all, there is a fundamental problem here. The interior wall has a large surface area, so it absorbs a lot of moisture, but there is only a smaller area available for drying to the inside – i.e. the wall cap.

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