Sprayable airtightness sealant with humidity-variable water vapour permeability, white


  • Time-saving and can be applied in versatile ways: spraying with an airless sprayer or AEROFIXX (compressed air), paint on
  • 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 hazardous substance testing, has been tested according to the ISO 16000 evaluation scheme

Areas of application

For use as a humidity-variable vapour check 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, and for panel joints on airtight wood-based panels (e.g. OSB).
  • 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.
  • The sprayed-on liquid film forms a seamless, elastic air-retarding and vapour-checking protective layer once it has dried.
  • Forms a seamless, elastic airtight and vapour-checking protective layer once it has dried.

Technical specs

Component modified aqueous acrylate polymer dispersion
Property Value Regulation
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 0.9 US perms (at 0.3 mm ; 12 mils thickness) ASTM E96-A
Vapour permeance, humidity variable 0.33 - 25 US perms EN ISO 12572
Fire rating E EN 13501-1 / 2007
Outdoor exposure 3 months
Water column 2 000 mm ; 6' 7" EN ISO 811
Watertightness 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 ml/m² ; 2.46 oz/ft², depending on applied thickness (1 l ≙ 1 kg)
Drying approx. 12 - 48 hours (at 20 °C, 65% rel. humidity) depending on subsurface and applied thickness
Storage 5 °C to 25 °C ; 41 °F to 77 °F, closed in an airtight manner