Product Description

Trade Expanding Gunfoam B1 is a professional-grade, one-component polyurethane foam designed for use with foam applicator guns. This fire-rated, high-performance foam delivers rapid curing, superior insulation, and excellent primerless adhesion to a wide variety of building materials. Ideal for fire protection, thermal insulation, and soundproofing in both residential and commercial construction.

Key Features:

• Fire-Rated Performance: Certified to EN 1366-4 with fire resistance up to 4 hours.
• Classified as B1 according to DIN 4102 (flame-retardant standard)
• Excellent Acoustic Insulation: Soundproofing performance rated up to 58 dB
• Thermal Insulation: Low thermal conductivity of 36 mW/mK ensures efficient energy retention
• Superior Adhesion: Bonds to most common construction surfaces without the need for primer
• Fast Curing & Expansion: Rapid set time saves on labour and speeds up project timelines

Typical Uses:

• Filling large gaps in passive fire protection systems
• Installing fire-retardant door and window frames
• Sealing expansion joints, pipe penetrations, and cable ducts
• Providing thermal and acoustic insulation around structural openings
• General use in insulation, roofing, and internal wall applications

Application Guidelines:

• Shake can vigorously for at least 20 seconds
• Ensure all surfaces are clean, dry, and free of grease or dust
• Lightly moisten surfaces before applying foam for improved adhesion
• Fill gaps to two-thirds full – the foam will expand as it cures
• Shake the can periodically during use
• For multi-layer applications, moisten between layers
• Fresh foam can be cleaned using Soudal Gun & Foam Cleaner or acetone
• Cured foam must be removed mechanically or with Soudal PU Remover

Trade Expanding Gunfoam B1 delivers reliable fire-rated protection with the added benefits of thermal and acoustic insulation—making it the trusted choice for professionals in demanding construction environments.