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Soudal Flexifoam gun foam highly flexible insulating foam 750 ml

Description

Soudal Flexifoam is a 1-component, highly flexible PU gun foam that cures up to three times more elastic than conventional mounting foam. It permanently compensates for building-element movement at windows, doors and connection joints, thereby preventing cracks and foam separation.

Your benefits at a glance

  • Approx. 3x more flexible than standard PU foam, absorbs large building-element movements
  • Excellent dimensional stability, low volume shrinkage
  • Excellent adhesion to almost all building substrates
  • Higher sound and thermal insulation than mineral wool
  • Precise dosing gun for economical use

Areas of application

  • Installing window and door frames as well as window sills
  • Insulating in cold room, refrigerated vehicle and heating engineering
  • Foam-filling cavities and pipe penetrations

Unlike rigid standard foam, Flexifoam does not tear when building elements move – the joint stays permanently tight.

Technical properties & application

One-component, self-expanding polyurethane foam with a bulk density of approx. 25 kg/m³ and a yield of approx. 30 l per 750 ml can. Skin formation after approx. 6 minutes, cuttable after approx. 40 minutes, load-bearing after approx. 12 hours. When cured, temperature-resistant -40 °C to +90 °C, thermal conductivity 0.0345 W/(m·K) to DIN 52612, building material class B2 to DIN 4102-1. Application temperature +5 °C to +35 °C.

Practical tip: Shake the can approx. 20–30 times before use, fill joints only to two thirds and lightly dampen fresh foam. Cured foam is not UV-resistant and should be painted over or covered with sealant.

Technical data

Area of use: Exterior, Interior
Colour: blue
Pack size: 750 ml
Version: B2
Technical data
Product type: Gun foam
Standards
Building material class: B2 to DIN 4102-1
Standard: DIN 52612
Use
Field of use: Indoors, outdoors
Merchandise group: Construction foam & PU foam
Application
Yield: 30 l
Tack-free after: 6 minutes
Application temperature: +5 °C to +35 °C

Data sheets

Data sheets and documents

All documents come unchanged from the manufacturer.

Manufacturer information

Manufacturer information pursuant to Art. 19 EU GPSR

Postal address Soudal N.V.
Everdongenlaan 18-20
2300 Turnhout
Belgium

Electronic address verkauf@soudal.com

All products by Soudal

Information as of: 2026-09-17

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For your project

These products go with it

Project: Seal windows and doors to RAL guidelines

Execute the connection joint in three layers: airtight inside (acrylic A710 or interior tape), insulated in the middle (assembly foam or multifunctional tape), driving-rain-tight and vapour-permeable outside (S730 or exterior membrane). Inside must always be tighter than outside.

  1. Prepare the surface

  2. Apply

    • Part of the system Insulates the middle layer; can only be applied with a foam gun
      €11.95 €15.93 / 1 Litre
    • Alternative One tape for all three layers – then without A710 and S730
      €23.29 €2.91 / 1 Metre
    • Alternative One tape for all three layers – then without A710 and S730. Choose the tape dimension according to window installation depth and joint width
      €23.99 €6.00 / 1 Metre
    • Alternative Narrow version (joint 4–30 mm) only for the lower connection – instead of the wide tape, not in addition. Choose the dimension according to the measured joint width
      €13.49 €3.37 / 1 Metre
  3. Seal & join

    • Part of the system Use on the inside (room side) only
      €4.49 €14.48 / 1 Litre
    • Part of the system Use on the outside (weather side) only
      €10.79 €34.81 / 1 Litre
    • Alternative Alternative to S730/membrane for the outer layer; choose the tape size according to joint width. Inside, continue with A710 or interior tape – K600 BG1 only seals outside
      €6.09 €0.47 / 1 Metre
    • Alternative Membrane route inside, instead of A710
      €36.79 €1.84 / 1 Metre
    • Alternative Membrane route outside, instead of S730
      €22.95 €0.38 / 1 Metre

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