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Flexi-Foam Gun Grade 750ml

Product Code: SFFF

Soudal FlexiFoam a Soft Spongy Foam which Springs Back and also has Acoustic properties to 60db

Flexifoam gun is a one-component, self-expanding, ready to use polyurethane foam.  The product has minimal expansion after application (less than 50%) and is therefore very economical to use. Flexifoam is very elastic and has a very high Acoustic Rating value.

Flexifoam is much more elastic than standard PU-foam:
  • Elastic Recovery ( ISO 1856) is up to 90% if the foam is compressed by 75%.
  • Traditional PU-foam does not have any recovery if the compression is higher than 10%.
  • Elongation at break is three times that of traditional foam. The maximum elongation before breaking (DIN 18540) is about 45% compared to 15% for traditional PU-foam.

Thanks to these flexibility properties, the foam will maintain its general characteristics much better. Joint movements through the years will cause a traditional PU-foam to break and lose some of the following properties:

Flexifoam follows the movements of the joint and will keep its insulating properties over the years. This is certainly a necessity for larger windows in PVC or aluminium, especially in smaller joints (e.g. 2 to 3 cm width). The maximum movement allowed for traditional foam before breaking is only 2mm compression or 3mm elongation. Moreover, after several years the maximum elongation and compression will reduce to possibly 50%. That?s why Soudal created Flexifoam which has high movement capability as well as stress resistance in time.


  • Thermal insulation
  • Acoustic insulation
  • Air and vapour block
  • Application areas:
  • Expanding joints.
  • Vibrating constructions
  • Use as fixing foam while minimizing noise transmission
  • Impact and shock damping
  • Sealing of window- and doorframes
  • Filling of cavities
  • Sealing of all openings in roof constructions
  • Construction of baffle plate; soundproofing
  • Connecting insulation materials to roof constructions
  • Application of a soundproofing layer on motors
  • Improving thermal insulation in cooling/heating systems
  • Characteristics:
  • Very high elastic recovery
  • Copes with extreme mechanical movement without cracking
  • Excellent adhesion on most substrates (except Teflon, PE and PP)
  • High thermal and acoustic insulation
  • Very good filling capacities
  • Excellent stability (no shrink or post-expansion)
  • Very precise application due to the foam gun system
  • Low expansion
  • Good compressibility


Safety Data Sheet - 197.46 kb
Technical Data Sheet - 114.72 kb


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