Moisture-variable vapor barriers

Humidity-variable vapour control layers

Variable Vapor Control Membranes

Maximum Protection for Modern Constructions

Variable vapor control membranes provide highly reliable airtightness and protect constructions against moisture damage. Unlike traditional vapor retarders, they adapt their diffusion resistance to temperature and humidity conditions.

During winter, these systems act as highly diffusion-resistant barriers to prevent moisture from entering the insulation. In summer, they become diffusion-open and allow controlled drying of the structure, significantly increasing the safety of the entire construction.

Variable sd-values
Reliable drying capability
Ideal for renovation projects
High safety in timber construction

INTELLO Vapor Barrier 1 m² Cut
Used as a vapour control and airtightness membrane for reliable airtight sealing and protection against mould and building damage. Suitable for all fibrous insulation materials.
3,50 EUR
3,50 EUR per
incl. 19% tax excl. Shipping costs
INTELLO Vapor Barrier 30 m²
Used as a vapour control and airtightness membrane for reliable airtight sealing and protection against mould and building damage. Suitable for all fibrous insulation materials.
99,90 EUR
3,33 EUR per
incl. 19% tax excl. Shipping costs
INTELLO Vapor Barrier 75 m²
Used as a vapour control and airtightness membrane for reliable airtight sealing and protection against mould and building damage. Suitable for all fibrous insulation materials.
226,00 EUR
3,01 EUR per
incl. 19% tax excl. Shipping costs
Intello 150 m²
Used as a vapour control and airtightness membrane for reliable airtight sealing and protection against mould and building damage. Suitable for all fibrous insulation materials.
498,00 EUR
3,32 EUR per
incl. 19% tax excl. Shipping costs
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Typical Applications

  • Roof renovations
  • Timber frame construction
  • Between-rafter insulation
  • Diffusion-open constructions
  • Renovation of existing buildings
  • Demanding wall assemblies

What Matters Most

  • Professional airtight installation
  • Reliable sealing of all joints
  • Compatible tapes and sealing systems
  • Durable sealing of penetrations
  • Controlled drying of constructions
  • Long-term protection of insulation systems

More Safety for Critical Constructions

Especially in complex or uncertain building assemblies, variable vapor control membranes provide a high level of safety and flexibility. Their drying potential significantly reduces moisture risks and supports long-lasting constructions.

Proper Installation of Variable Vapor Control Membranes

For a reliable airtight layer, not only the right membrane is important, but also professional installation. All joints, overlaps and penetrations must be sealed permanently airtight to prevent moisture intrusion.

Special attention should be paid to transitions between adjacent building components as well as cable and pipe penetrations. Matching tapes, sealants and grommets ensure durable and secure sealing.

As a specialist supplier, we offer variable vapor control membranes and matching accessories for professional installation and long-term protection of building constructions.

Frequently Asked Questions

What does variable vapor control mean?

Variable vapor control membranes change their diffusion resistance depending on temperature and humidity conditions.

When are variable vapor control systems recommended?

They are especially suitable for renovation projects, timber constructions and diffusion-open building assemblies.

Why is airtight sealing important?

Only airtight sealing prevents moisture intrusion and permanently protects the insulation system against damage.