40mm Thermalboard Polystyrene Insulation

The 40mm Thermalboard is a durable and lightweight insulation panel made from expanded polystyrene (EPS), designed for use in Insulated Kit Tile Systems (IKTS) and other thermal wall and ceiling applications. With enhanced thermal performance and moisture resistance, it is ideal for tiled surfaces in wet environments such as bathrooms, kitchens, and wet rooms.

Key Features

• 40mm thick EPS core for improved insulation performance
• Lightweight, easy to cut, shape, and install
• Compatible with tile adhesives, plasters, and render systems
• Moisture-resistant and rot-proof
• Optional cement-faced surface for direct tiling (if applicable)
• Suitable for both new-build and retrofit applications

Applications

• Tile backer board in IKTS installations
• Internal wall and ceiling insulation
• Wet room and bathroom linings
• Kitchen splashback insulation support
• General purpose thermal insulation board

Technical Specifications

• Thickness: 40mm
• Core material: Expanded Polystyrene (EPS)
• Thermal conductivity: ~0.035 0.038 W/m?K
• Standard board size: 1200mm x 600mm (custom sizes available)
• Compressive strength: 100 kPa
• Water absorption: < 2%
• Optional facing: Cement-coated / Glass-fibre mesh reinforced (if required)

The 40mm EPS Thermalboard is a reliable solution for improving energy efficiency while supporting tiled finishes in moisture-prone areas. For more information, custom sizing, or technical support, please contact us.