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FlameOut Block Plus Flame Retardant VCL FR Class B is a high-performance vapour control layer designed to enhance fire safety in construction environments. Measuring 2m x 50m (100m²), this flame-retardant membrane provides essential protection by limiting the spread of flames and smoke, making it suitable for commercial and residential projects. Certified to Class B fire resistance, it helps meet building regulations while ensuring durability and reliability. Easy to install, the FlameOut Block Plus is an ideal solution for controlling moisture migration and improving the overall safety of wall and roof assemblies in various building applications.