Hand-held B1 fire-rated PU foam for gap filling where fire performance matters. Classed B1 to DIN 4102-1, with excellent stability and strong acoustic insulation.
Brand: Soudal
Key Benefits
- Building material class B1 to DIN 4102-1
- Excellent stability – no shrinkage or post-expansion
- Sound insulation of 58 dB
- Thermal conductivity of 0.035 W/m·K
Where to Use It
- Filling and insulating fixed window and door frames
- Cavities, pipe and cable penetrations
- Acoustic baffles
- Improving insulation in cooling systems
Technical Specification
| Volume |
750 ml aerosol (hand held) |
| Colour |
Blue |
| Fire classification |
B1 (DIN 4102-1) |
| Skin formation (EN 17333-3) |
8.5 minutes |
| Cutting time (EN 17333-3) |
65 minutes |
| Joint yield (EN 17333-1) |
approx. 22 m per 750 ml |
| Box yield (EN 17333-1) |
approx. 32 litres per 750 ml |
| Thermal conductivity |
0.035 W/m·K |
| Sound insulation (EN ISO 717-1) |
58 dB |
| Temperature resistance (cured) |
-40°C to +90°C |
| Shelf life |
12 months unopened, stored upright +5°C to +25°C |
Specifications from the Soudal technical data sheet. Typical values – curing and skinning times vary with temperature, humidity and substrate.
Frequently Asked Questions
What does B1 mean?
B1 is the 'flame retardant' building material class under German standard DIN 4102-1.
Is it a fire-stopping product on its own?
B1 is a material class. Fire-resistance of a sealed joint depends on the tested system, so check the certified detail for your job.
What colour is the cured foam?
Blue.
When can it be cut?
After about 65 minutes.
Complete the job: Expanding Foam · Expanding Foam Gun