VISCON is a high-quality, water-based acrylic fluid-applied air barrier. Apply with airless sprayer or brush to air seal CMU, concrete, wood, joist bays, weather resistant barriers and all Pro Clima membranes. The spray-on liquid film forms a seamless, elastic air and vapor variable membrane once cured.
Time-saving: ready-to-use liquid
Reliable bonding thanks to excellent adhesive properties on all standard construction surfaces
For robust airsealing: 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 bonded onto it (or can be sprayed over all TESCON/CONTEGA Pro Clima tapes)
Use for interior and exterior areas shielded from UV/direct weather exposure thanks to its vapor-variability
Pitched window sills can be created (3:12 pitch) over ProClima tapes and with uninterrupted application to sides/bucks
Excellent values in the hazardous substance test, has been tested according to the AgBB evaluation scheme / ISO 16000
Coverage per container: ~13m² (145ft²) at 750 g/m² depending on applied thickness
Material: Aqueous acrylic dispersion
Color: Blue (wet), Navy Blue/ Black (dry)
Weight: approx. 0.66 oz/ft² (200 g/m²) (cured) EN 1849-2
Application thickness: 8 – 39 mils (0.2 – 1.0 mm) wet film
Average permeability: 0.5 perms (6.11m ±0.6 m) at 11 mils (0.3 mm) thickness EN 1931
Vapor variability range: 0.33 to 25 perms (0.13 – 10.00 m) ISO 12572
Water column: 6’7” (2m) AATTC 127
Cured material: Can be plastered / painted over
Connections: Pro Clima adhesive tapes can be applied on to dry VISCON
Application temperature: 41 °F to 95 °F (5 °C to +35 °C)
Long-term temperature resistance: -13 °F to 194 °F dried (-25 °C to 90 °C)
Dry time: 12 – 48 hours (at 68 °F (20 °C) 65% rel. humidity) depending on substrate / applied thickness
Storage temperature: 41 °F – 77 °F (5 °C – 25 °C) dry, 12 months
Area of application
VISCON liquid-applied air barrier can be applied as a spray or using a brush for both interior or exterior use. Apply to walls, ceilings and floor surfaces, such as non-plastered masonry, CMU, wood sheathing, fiberboard, joists or joist bays. It simplifies air sealing of difficult junctions such as windows, roofs, walls, ceilings and floors connections.
Can also be used for bonding/stabilizing subsurfaces in the case of renovations.
The humidity-variable diffusion resistance of this product means that it can be used on the interior and exterior of building components.
VISCON is a high-quality, water-based acrylic dispersion paste that forms a seamless airtight membrane. It is elastic and vapor-retarding protective layer once it has dried. Adheres to all standard construction materials, wood, steel, masonry, all Pro Clima membranes, WRB, roof underlayments and membranes made of aluminum and paper.
VISCON Spec Sheet
VISCON Application Guide
Related Blog Posts
Introduction to VISCON