Sprayable airtightness sealant with a humidity-variable sd value (g value, permeance), white



  • Time-saving: ready-to-use dispersion
  • Reliable structures thanks to excellent adhesive properties on all standard construction surfaces
  • Covers cracks and joints of up to 3 mm (1/8") width. Larger joints can also be covered in combination with AEROSANA FLEECE.
  • For robust building components: permanent elasticity and high durability once it has dried
  • Improves surfaces: forms a bonding course between subsurfaces and subsequent coatings
  • Can be plastered/painted over, pro clima adhesive tapes can be stuck onto it
  • Flexible use in indoor and protected outdoor areas thanks to its humidity-variable sd value
  • Excellent values in the hazardous substance test, has been tested according to the ISO 16000 evaluation scheme

Areas of Application

For use as a humidity-variable vapour retarder and airtight layer that can be applied as a spray or using a brush on wall, ceiling and floor surfaces, such as non-plastered masonry or porous panel-form materials.

  • Also for the creation of joints to components such as windows, roofs, walls, ceilings and floors.
  • Can also be used for strengthening subsurfaces in the case of renovation.
  • The humidity-variable diffusion resistance of this product means that it can be used on the interior and exterior of building components.

AEROSANA VISCONN white is a high-quality, water-based acrylic dispersion paste that can be applied as a spray or using a brush. The sprayed-on liquid film forms a seamless, elastic air-retarding and vapour-retarding protective layer once it has dried.

Sticks to all standard construction materials, all pro clima membranes, and membranes made of aluminium and paper.

Technical specs

Material modified aqueous acrylate polymer dispersion
Attribute Value Norm
Colour white
Surface weight approx. 200 g/m² ; 0.66 oz/ft² (dried), depending on subsurface and applied thickness EN 1849-2
Coating application 0.2 - 1.0 mm ; 8 - 39 mils - wet film
sd-value 6 m (at 0.3 mm thickness) EN 1931
sd-value humidity variable 0.13 - 10.00 m EN ISO 12572
g-value 30 MN·s/g (at 0.3 mm thickness)
g-value humidity variable 0.65 - 50 MN·s/g
Vapour permeance 0.55 US perms (at 0.3 mm ; 12 mils thickness) ASTM E96-A
Vapour permeance humidity variable 0.33 - 25 US perms ASTM E96-A
Outdoor exposure 3 months
Water column 2 000 mm ; 6' 7" EN ISO 811
Water tightness to liquid water W1 EN 1928
Can be plastered/painted over yes, and pro clima adhesive tapes can be stuck onto it
Durability after artificial ageing passed
Application temperature 5 °C to 60 °C ; 40 °F to 140 °F
Temperature resistance permanent -40 °C to 90 °C ; -40 °F to 194 °F (dried)
Coverage approx. 750 g/m² ; 2.46 oz/ft², depending on applied thickness
Drying approx. 12 - 48 hours (at 20 °C, 65% rel. humidity) depending on subsurface and applied thickness
Storage 5 °C - 25 °C ; 41 °F to 77 °F, closed in an airtight manner. Stir well before application