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Ampatex Variano 3 extra – Grid-reinforced, moisture-variable vapour barrier and air seal (75 m² roll)

Product information "Ampatex Variano 3 extra – Grid-reinforced, moisture-variable vapour barrier and air seal (75 m² roll)"

Ampatex Variano 3 extra is a state-of-the-art, three-layer vapour barrier and air seal made from a composite of polyamide and polypropylene. Thanks to its grid reinforcement, it has extremely high tear resistance, making it the ideal solution for blow-in insulation.
The outstanding feature of this membrane is its enormous sD value spread of over 59 m (variable between 0.8 m and 60 m). This moisture variability ensures maximum safety in structurally demanding constructions, as it minimises moisture ingress in winter and optimally supports re-drying in summer.

Areas of application and advantages:

  • Maximum flexibility: Perfectly suited for flat roofs in timber construction and for the renovation of pitched roofs with a dense outer skin.

  • Roof renovation from the outside: Its robust structure makes it ideal for installation in renovation projects from the outside.

  • Safety in shell construction: Offers special protection during the winter construction phase, when ambient humidity is often critical.

  • Excellent workmanship: The membrane is characterised by excellent adhesiveness and is particularly dimensionally stable thanks to its grid reinforcement.


Delivery forms / variants 1.5 m × 50 m 75 m² - Ampatex Variano 3 extra (incl. adhesive tape) 1.5 m × 50 m 75 m² 60 running metres Ampacoll INT 
Designation
Roll dimensions
Area
Accessories
Ampatex Variano 3 extra1.5 m × 50 m75 m -
Ampatex Variano 3 extra with 60 running metres of Ampacoll INT
1.5 m × 50 m
75 m 
60 running metres Ampacoll INT
Technical data at a glance:
  • Roll dimensions: 1.5 m × 50 m (75 m²)
  • Moisture-variable sD value: 0.8 m to 60 m (maximum safety due to wide spread)
  • Material structure: Three-layer, grid-reinforced (polyamide/polypropylene)
  • Weight per unit area: 110 g/m²
  • Mechanical strength: Maximum tensile strength 300/250 N/5 cm; tear resistance 200/220 N
  • Water resistance: Passed at 2 kPa (according to EN 1928)
  • Fire behaviour: Class E according to EN 13 501-1 / EN ISO 11925-2


Processing tips


Installation: Ampatex Variano 3 extra is laid on the warm side of the thermal insulation layer. It is fixed in place in dry interior construction using staples on the substructure. Please note that moisture-variable materials can react to significant fluctuations in humidity – therefore, plan for relief loops and take shrinkage and expansion behaviour into account.


Bonding and sealing:

  • Overlaps: The strips must overlap by at least 10 cm. These joints must be sealed airtight with Ampacoll INT system adhesive tape.

  • Edge connections: Use Ampacoll BK 530 or Ampacoll RA connection adhesive for connections to adjacent components.

  • Substrate preparation: For dusty or porous substrates, priming with Ampacoll Primax is essential.

  • Penetrations: Pipes and cables should be permanently sealed with Ampacoll BK 535 or special Ampacoll Elektro / Install sleeves.



Anwendungen: Aufblasdämmung, Dachausbau, Luftdichtung, Sanierung
Breite: 150 cm
Gebinde: Rolle 50 m
Hersteller: Ampack
Länge: 50 lfm (75m³)
Produktgruppe: Gebäudedichtung
Verpackung: Rolle
Versand: Paketversand, Selbstabholung möglich
test: Ampatex Variano 3 extra

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