Low Expansion Foam

Selsil Low Expansion Foam is a one-component, polyurethane-based adhesive foam cured by aatmospheric moisture. Designed for filling and insulation purposes in the construction industry. Features controlled expansion to prevent damage to doors and windows.


  • One component.
  • Cured by atmospheric moisture.
  • Features controlled expansion to prevent damage to doors and windows
  • Excellent adherence to most construction materials such as wood, concrete, roofing tiles, metal, aluminium (except for polyethylene, silicone, and Teflon).
  • Thermal and acoustic insulation.
  • Cuttable and paintable when cured.
  • Exceptionally good filling (expansion) capacity.
  • Applied by gun, hence easy to use.
  • Not clogged when the application is paused for a brief period of time.


Gun Grade
Chemical Base Polyurethane
Curing Mechanism Atmospheric Moisture
Specific Gravity 15±3 kg/ M3 (ASTMC1620)
Tack Free Time 7-10 min. (AST C1622)
Cutting Time 15-30 min. (ASTM C1620)
Fire Class B3 (DIN 4102-1)
Optimum Application Temperature min. 20°C max. +25°C
Temperature Resistance (cured) -30°C to +80°C
Application Temperature 5°C to +35°C
Tensile Strength 67,7 kPa
Compression Strength 35,7 kPa
Dimensional Stability -1,09%

Used in repair work on brick, roofing tile, drywall, foam polystyrene, PVC, metal, and wooden elements, as well as doors with polyurethane foams, seals glass and door frames, insulates hot and cold-water pipes.

Application Details
Used to fix and assemble door and window frames,
Fill openings and gaps.

Storage is 12 months when stored at +5ºC/41ºF to +25ºC/77ºF.