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Product Information
Technical Datasheet
Safety Datasheet


AlphaChem B1 FireFoam is a high yield, high specification, one part, PU Expanding Foam is ideal for the filling and insulating of various joints, gaps and cavities in construction applications. In certain joint configurations the product is fire rated, according to EN 1366-4, and conforms to DIN4102-B1 Fire Class, to slow down the passage of flames and smoke. AlphaChem B1 Fire Foam has excellent acoustic and thermal properties. This product does not contain any propellant gases which are harmful to the ozone layer. For Professional use.


Ideal for all applications where fire retardant properties are required, for example:

  • Installation of door and window frames.
  • Filling and sealing gaps, joints and cavities.
  • Filling of penetrations in walls.
  • Heat insulation of roof construction.
  • Sealing of cable and pipe penetrations.
  • Soundproofing and sealing partition walls.
  • Bonding of insulation materials.
  • Multi-Purpose, adhesion and fixation