INSS0285 Smoke and Acoustic Sealant

INSS0285 Smoke and Acoustic Sealant is a high performance acrylic based sealant for sealing construction joints and through penetrations in non fire-rated assemblies. INSS0285 offers a Reduction in the transmission of sound through wall openings, stops the passage of smoke in smoke barrier walls and stops air leakage to reduce the passage of dust and airborne infectious particles.

Technical Data


  • Low VOC, single component
  • Excellent caulking and spraying properties
  • Silicone, halogen, asbestos and solvent free.
  • Excellent airborne sound insulation.
  • Smoke and fume resistant.
  • Easy clean up with water.
  • Low volume shrinkage.
  • Paintable.

*Available in caulking and sprayable Grades

Types of Applications

Color White
Chemical basis Water based acrylic dispersion
Density 1.6 ± 0.1 g/cm³
Skin-forming time Approx. 25 min
Curing time 3mm/3days (@ 25°C/ RH50%)
Elongation at break 300%
Typical thickness 1mm WFT = 0.7mm DFT
Temperature 40° F – 104° F (5° C – 40° C)
In-Service Temperature -13° F – 176° F (-25° C – 80° C)
Storage Temperature 50° F – 95° F (10° C – 35° C)
Mold and mildew (ASTM G21)  Mold resistant (Class 0)
Volume Shrinkage(ASTM C1241) 22.3%
VOC 42g/L
Surface burning characteristics Flame spread:0
UL 723 (ASTM E84) Smoke development: 5
STC Rating 63 (per construction type)
Packaging 310ml/Tube ; 25Tubes/CTN                         20 fl.Oz/Sausage
20 Sausages/CTN
5Gal./Pail (SPRAYABLE)