Soudafoam FR HY

Soudafoam FR HY Fire-rated PU Foam

Soudafoam FR HY is a single-component, self-expanding, ready-to-use polyurethane foam which has a fire rating of up to 240 minutes in certain configurations according to EN 1366-4. It uses CFC-free propellants that are completely harmless to the ozone layer. Every can comes with a straw adapter for quick, simple, and convenient application to fill gaps, cavities, and joints. With its high-yield formulation and an expansion value of 30 to 40x, each 750 ml can of Soudafoam FR HY can be expected to create up to 34 litres of cured, fire-resistant foam.

  • Fire-rated up to 4 hours
  • Prevents the passage of smoke and gas through a joint
  • Excellent adhesion on most substrates (except PTFE, PP, and PE)
  • High thermal and acoustical insulation
  • Very good filling capacities

750 ml pressurised aerosol can, 12 cans / box

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  • Fire-rated for up to 4 hours to achieve passive fire protection through compartmentalization
  • Prevents the spread of fire, heat, smoke, and gases through a joint
  • High yield formulation to achieve large running metres and filling capacities
  • Includes straw applicator for fuss-free and simple applications
  • Self-expanding to easily fill up large gaps and cavities
  • Open-cell technology for faster curing times, better insulation, and higher strength
  • Excellent dimensional stability means no excessive curing and post-expansion pressure
  • Will not shrink or collapse
  • Can even be used as an insulating adhesive for mounting and bonding
  • Superb shelf-life with little degradation of performance after storage
  • Made in Belgium by the one of the world’s largest PU foam manufacturers


  • Installation of fireproof doors
  • Installation of fireproof windows
  • Fire and smoke retardant sealings of connections between partition walls, floors, and ceilings
  • Installation of fire-rated boards and other fire-rated materials
  • Any filling, bonding, or mounting application requiring fire-retardant characteristics or a fire-rated product, such as:
    • Sealing of all openings in roof constructions
    • Sealing of cable and pipe penetrations
    • Creation of a sound-proof screen
    • Bonding of insulation materials
    • Application of sound-deadening layers
    • Improving thermal insulation in cold store areas

How to use

  • Always shake the can aggressively before application
  • Spraying a fine mist of water on the substrate may promote adhesion and cell structure
  • Attach the included straw applicator on the foam nozzle firmly
  • Turn the can upside down to extrude the foam
  • Fill gap up to 50% – 70%, and allow for self-expanding properties to fill the rest
  • Allow foam roughly 3 hours to expand and cure
  • Cut away excess foam from the joint if necessary
  • It is necessary to allow the PU foam to cure for at least a month before it can achieve fire-resistant properties

More instructions – see our PDF

Storage and warnings

  • Soudal PU foams can be stored up to 18 months in unopened packaging in a cool, dry storage place with temperatures between 5 to 25C.
  • Always store can with the valve pointed upwards.
  • Always use safety goggles and gloves when using PU foam.
  • PU foams are highly flammable. Do not smoke or have any source of fire near during application.
  • For the full list of precautions, please consult the Technical Data Sheets and Material Safety Data Sheets as provided.

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