PENOSIL Speedfix Construction Foam Adhesive 878 – Grey

The PENOSIL 878 SpeedFix is a professional-grade, multi-purpose polyurethane foam adhesive designed for rapid construction and insulation tasks. Unlike standard expanding filler foams, the 878 is engineered for low post-expansion, meaning it bonds materials together tightly without pushing them out of alignment. It is a year-round universal adhesive that replaces traditional mortars and mechanical fixings in many applications.

Key Features
Low Expansion & Pressure: Specially formulated to minimise mushrooming or pushing, making it ideal for fixing plasterboards and windowsills where a flat, level finish is essential.

All-Weather Performance: Can be used in temperatures as low as -5°C and as high as +30°C, making it a reliable choice for both winter site work and summer installations.

High Initial Grab: Provides rapid adhesion to most construction materials, allowing you to move through insulation and boarding jobs significantly faster than with traditional cement-based adhesives.

Superior Thermal & Sound Insulation: Offers excellent insulation properties (0.033 W/m·K thermal conductivity) and acts as a noise barrier (up to 62 dB), perfect for eliminating thermal bridges.

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