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Ampatex Variano 3 extra
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Moisture-variable vapour check and airtight layer, lattice-reinforced

Lattice-reinforced, three-layer moisture-variable vapour check and airtight-layer made of polyamide and polypropylene.

  • Ideal for injection insulation due to its high tear resistance
  • Over 59 m sD value range for maximum protection in buildings where moisture levels are critical
  • Excellent adhesive properties
  • Hydrosafe and saddle-point protective effects for building carcasses in wintertime

Lattice-reinforced, three-layer moisture-variable vapour check and airtight-layer made of polyamide and polypropylene. Perfectly suited for flat roofs in timber construction; also for renovating pitched roofs with a dense outer skin. The membrane offers special protection when used on bare brickwork in winter. Ideal for injection insulation due to its high tear resistance.


20 Jahre Ampack Garantie

CE 13984:2013

ISO 9001

Article numberDescriptionRoll dimensions

7640442090578

Ampatex Variano 3 extra
with 60 lfm Ampacoll INT
1,5 m × 50 m = 75 m2
7640442090431Ampatex Variano 3 extra1,5 m × 50 m = 75 m2
Property Value Standard
Harmonised European Standard EN 13984:2013

Mass per unit area

110 g/m2

EN 1849-2

Fire behaviour

E EN 13 501-1 / EN ISO 11925-2

Brandkennziffer

5.2
Waterproofing approved at 2 kPa EN 1928

Water vapour permeability, sD value

0,8 - 60 m EN 1931

Width of overlap

10 cm

Shear resistance of the joints

130 N

Maximum tensile strength longitudinal / transverse

300 / 250 N/5 cm

EN 12 311-2, without support liner EN 13 859-1, Appendix A, with support liner

Elongation longitudinal / transverse

20 / 20 %

EN 12 311-2, without support liner EN 13 859-1, Appendix A, with support liner

Resistance to tearing (nail) longitudinal / transverse

200 / 220 N

EN 12 310-1 without support liner EN 13 859-1, Appendix B, with support liner
Resistance to alkalis approved EN 1847
Air tightness airtight
Hazardous substances none
Visible defects none EN 1850-2
Values after artificial ageing

Water vapour permeability, sD value

approved EN 1296, 70°C / EN 1931
Technical data sheets
pdf Technical data sheet: Ampatex Variano 3 extra Technical data sheet: Ampatex Variano 3 extra, moisture-variable vapour check and airtight layer
Product inserts
pdf Product insert: Ampatex Variano 3 extra Product insert: Ampatex Variano 3 extra 1.5 x 50 m, moisture-variable vapour check and airtight layer, with Ampacoll INT
pdf Product insert: Ampatex Variano 3 extra Product insert: Ampatex Variano 3 extra 1.5 x 50 m, moisture-variable vapour check and airtight layer
Product photos
jpg Product photo: Ampatex Variano 3 extra Product photo: Ampatex Variano 3 extra, moisture-variable vapour check and airtight layer, with Ampacoll INT
jpg Product photo: Ampatex Variano 3 extra Product photo: Ampatex Variano 3 extra, moisture-variable vapour check and airtight layer

Ampatex Variano 3 extra is applied as an airtight layer and moisture-variable vapour check for dry interior finishing and positioned on the warm side of the thermal insulation where it is stapled to the construction. Take care when positioning it that the membranes overlap by 10 cm and that the joints are tightly sealed with the enclosed system adhesive strip Ampacoll INT. Edge connections must be sealed with Ampacoll BK 530 or Ampacoll RA. Porous or dusty surfaces must be pretreated with Ampacoll Primax. Penetrations such as ventilation and electric pipes must be permanently sealed with Ampacoll BK 535 or Ampacoll Elektro u. Install sleeves. Humidity-variable materials can react to strong changes in ambient humidity. Consider shrinkage and expansion behaviour (e.g. conditioning on site, relief loops, mechanical securing, etc.).

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