from $210.45 /selection
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Because it is at risk of freezing, VISCONN cannot be transported through low temperatures for extended periods of time.

To schedule delivery that reduces freezing risk, please use the button below to quote your purchase:

1-3 4+
VISCONN 10L - BLUE (DRIES BLACK) $210.45 $195.72
VISCONN 10L - WHITE $215.60 $200.51

Product Specifications

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Liquid-applied air barrier for robust connections. For use as WRB, flashing for pitched windows sills, and other detailing. VISCONN® can be brushed, rolled, or sprayed as a liquid film and dries to form a seamless, elastic, airtight and vapor-variable membrane.


2.5 Gallons (10 L)/ container
Coverage per container:
~125ft² when applied with brush
~170ft2 when applied with airless sprayer
[coverage dependent upon applied thickness]


  • Time-saving airsealing of difficult junction because of airless spray/brush application
  • PHI-Certified airbarrier - for interior with vapor-variable properties
  • IFT Rosenheim certification as airtight/waterproof joint sealing for insulated window frame rough opening gaps
  • For use as WRB on exterior behind rainscreens when shielded from long term UV exposure
  • Use appropriate safety protection when using airless sprayer
  • Available in two color options: one that is blue when wet and dries black to confirm drying, one that is white when both wet or dry


  • Apply to walls, ceilings and floor surfaces, such as masonry, CMU, wood sheathing, fiberboard, joists or joist bays
  • Reliably fills gaps of 1/8”; deeper joints or thick coats result in longer cure times
  • Highly porous/uneven materials require 2 or more coats for reliable coverage/airsealing
  • It may be necessary to apply more than one coat in the case of uneven or rough subsurfaces
  • Can be plastered/painted over, Pro Clima® adhesive tapes can be bonded onto it (and can be sprayed over all TESCON/CONTEGA Pro Clima® tapes)


  • Material: Aqueous acrylic dispersion
  • Passed ASTM E331/ IBC - 1403.2 (300PA for 2 hours) for WRB code compliance
  • Temperature Resistance: -40°F to 176°F
  • Perm Rating: 0.5 perms (6.11m ±0.6 m) at 11 mils (0.3 mm) thickness EN 1931
  • Vapor Variability ISO 12572: 0.33 to 25 perms (Sd: 0.13 – 10.00 m)
  • Recommended airless sprayers: Graco Hi-Boy 390, 395, 490, or 495 - see Reference Downloads for guide
  • UV/weather Resistance: 3 months of exposure
  • NBC 2020- Air Barrier Systems Passed air leakage <0.02 L/(s·m²) @75 Pa (ASTM E2357)
  • Low VOC per SCAQMD limits
  • LEEDV4 passed CDPH v1.2 for Private Office and School Classroom (PO and SC)
  • Living Building Challenge RED list free