The Floor Slab Panel by Green Walls is a high-performance, lightweight solution designed for insulated floor and roof systems using reinforced concrete joists. Engineered as a permanent insulating formwork, it combines structural efficiency with continuous thermal performance—ideal for modern, energy-conscious construction.

Made from precision-shaped expanded polystyrene (EPS), the panel serves as both formwork and insulation, eliminating thermal bridges and reducing heat loss through the building envelope. Installation is fast and straightforward: once positioned between joists, the system is completed with supplementary steel reinforcement and a structural concrete pour, creating a monolithic, load-bearing slab.

Key advantages:

• Integrated thermal insulation—improves building energy rating and indoor comfort
• Lightweight design—simplifies handling and reduces structural loads
• Rapid on-site assembly—cuts labor time and accelerates project schedules
• Compatibility with standard reinforced concrete joist systems
• Sustainable performance—low embodied carbon and recyclable materials

Perfect for residential, commercial, and industrial applications, the Floor Slab Panel delivers a seamless blend of buildability, insulation, and durability—making it a smart choice for roofs, intermediate floors, and attic conversions in GreenWalls’ modular construction ecosystem.