Features & Benefits

🔥 4-Hour Fire Resistance – Tested to BS 476-20, EN1366-4, EN13501 & DIN4102-1 standards, this B1-rated expanding foam provides up to 4 hours of certified fire protection for sealing critical joints and voids.

🧱 Multi-Purpose Sealing & Insulating – Ideal for filling and fixing around pipework, electrical cabling, deep joints, irregular gaps, window sills, thresholds, and timber structures. Perfect for interior and exterior use.

🔇 Thermal & Acoustic Insulation – Advanced cell structure offers excellent soundproofing and thermal barrier properties, reducing heat loss and noise transmission in buildings.

⚡ Fast Curing & Paintable Finish – Expands up to 30x its original volume for efficient gap filling, cures quickly, and can be easily cut, painted, plastered, or sanded once dry.

🧤 Convenient & Safe Application – Gun-grade design ensures precise control and minimal waste; includes gloves for safety and clean handling during use.

Description
The 750ml B1 Fire Rated Fill & Fix Expanding PU Foam is a professional-grade polyurethane foam formulated for high-performance fire, heat, and acoustic sealing applications. It delivers a 4-hour fire resistance, making it ideal for use in critical fire safety installations such as around doors, windows, pipe penetrations, and electrical conduits.
This pink-coloured foam expands up to 30 times its original volume, filling voids and irregular gaps with a durable, airtight, and soundproof barrier. It adheres strongly to most construction materials including concrete, brick, metal, and timber.
Suitable for interior and exterior use, it’s fast-curing, CFC-free, and can be cut, painted, or plastered after curing. Ideal for builders, electricians, plumbers, and fire safety professionals seeking reliable insulation and fire-stopping performance.