ThermoSphere Thermal Insulation Board for Timber Floor

ThermoSphere Coated Thermal Insulation Boards for Timber Floors

Enhance the performance of your electric underfloor heating system with these high-quality coated insulation boards. Designed specifically for timber substrates, these boards provide a combination of thermal insulation, structural reinforcement, and long-lasting moisture resistance — making them the ideal base layer for efficient and reliable underfloor heating installations.

Each board features a rigid high-density extruded polystyrene (XPS) core, which is fibre reinforced and coated with a cement-based layer for added durability and load-bearing strength. The result is an insulation board that not only improves heat retention but also stiffens timber subfloors to prevent movement and reduce flex.

Key Benefits:

• High Thermal Performance: Low thermal conductivity of 0.033 W/mK helps to reduce heat loss and improve energy efficiency.
• Rigid & Durable: Fibre-reinforced cement coating adds strength and surface durability — ideal for supporting tiled floors.
• Moisture Resistant: Water-resistant and rot-proof, making it suitable for use in bathrooms, kitchens, and other high-humidity environments.
• Improves Floor Stability: Stiffens timber floors to minimise deflection and enhance the longevity of floor finishes.
• Lightweight & Easy to Install: Easy to cut and handle on-site, with minimal dust or debris.

Applications:

• Under tiled or laminate flooring over timber substrates.
• As a thermal break beneath electric underfloor heating systems to prevent downward heat loss.
• Suitable for use in wet rooms, bathrooms, kitchens, and living areas.

Benefits at a Glance:

• Maximises heating efficiency
• Reinforces subfloor structure
• Resistant to moisture, mould, and rot
• Quick and simple to install
• Suitable for tile adhesives and levelling compounds