The Grafen PU Fire Resistant Foam B1 750ml 845g is a fire-retardant one-component polyurethane foam classified as B1 (flame-resistant, self-extinguishing) according to DIN 4102-1.
It is designed for fire-rated sealing, mounting, and insulation of joints, walls, ceilings, and frames.
Once cured, it forms a strong, airtight, and durable structure with excellent thermal and acoustic insulation properties.
Adheres perfectly to concrete, brick, metal, wood, and plastic surfaces.
Application
- Fire-resistant sealing of joints and openings
- Installation of window and door frames
- Insulating walls, partitions, and ceilings
- Cable and pipe penetrations requiring fire resistance
Instructions for Use
- Ensure the surface is clean, dry, and free of dust.
- Bring the can to room temperature and shake it vigorously about 30 times.
- Screw the can onto the PU foam gun and hold it upside down during use.
- Fill the joint about 70% (foam expands).
- Allow to cure (cuttable after 2–4 hours).
- Protect cured foam from UV radiation with paint, plaster, or sealant.
- Clean the gun immediately after use with Grafen PU Foam Cleaner.
Product Specifications
- Content: 750 ml / 845 g
- Fire class: B1 (flame-retardant, self-extinguishing) according to DIN 4102-1
- Type: Fire-resistant PU foam for gun application
- Excellent adhesion to most construction materials
- Application temperature: +5°C to +30°C
- Cuttable after: 2–4 hours
- Fully cured after: 24 hours
- Expansion: approx. 40–45 litres (free foamed)
- Resistant to moisture, heat, and aging
- Shelf life: 12 months from manufacturing date
