Fire‑resistant PU foam gun Tytan B1 750 ml — low-expansion, single-component

Tytan B1 750 ml is a fire-resistant, gun-grade polyurethane (PU) foam formulated as a single-component, low-expansion product for controlled application with a foam gun. It is intended for filling, sealing and insulating joints, gaps and service penetrations where enhanced fire performance is required. The 750 ml format provides a professional-capacity yield suitable for multiple installation tasks around doors, windows, frames and technical penetrations in walls and floors.

Advantages

The low-expansion formula minimises deformation of surrounding elements and allows accurate dosing when used with a foam gun. Being single-component, the foam cures on exposure to atmospheric moisture without the need for additional primers or mixing. Its fire-resistant formulation improves passive fire protection around penetrations and perimeters, maintaining adhesion to common construction substrates such as concrete, brick, metal and many window frame materials. The gun-grade consistency supports neat, continuous application and reduces waste compared with non-gun foams.

Suitable for

• Sealing gaps and joints around doors and windows where fire resistance is required
• Insulating and filling service penetrations for cables, pipes and conduits
• Fire-stopping perimeter joints between structural elements and building services
• General thermal and acoustic insulation where controlled expansion is needed

Key specifications

• Form: single-component polyurethane foam, low expansion
• Application method: foam gun (gun-grade consistency)
• Volume: 750 ml cartridge format for multiple uses
• Curing: moisture-activated polymerisation at ambient conditions
• Compatibility: adheres to concrete, brick, metal and common window frame materials
• Primary properties: fire-resistant formulation, thermal and acoustic insulating performance

How to use

Ensure substrates are clean, structurally sound and free of dust, grease or loose particles. Shake the cartridge according to manufacturer guidelines before attaching to a compatible foam gun. Apply at recommended temperatures and humidity levels, moving the gun steadily to fill gaps and penetrations without overfilling. Allow the foam to cure; excess foam can be trimmed with a knife once fully cured and finished with suitable sealants or coatings as required. Follow safety instructions for ventilation and personal protective equipment during application.

Usage recommendations

For best results, use a regulated foam gun to control flow and minimise waste. Pre-wetting deep cavities slightly with water can accelerate curing. Avoid application on frozen or heavily damp surfaces. After curing, protect exposed foam from direct UV exposure with appropriate finishes if long-term exterior exposure is expected.