ThermoSphere Concrete Insulation Board

ThermoSphere Concrete Insulation Boards are designed to maximise the efficiency of electric underfloor heating systems on concrete subfloors. Made from high-density extruded polystyrene, these uncoated boards significantly reduce downward heat loss, resulting in up to 50% greater system efficiency. With 100% moisture and rot proof properties, they are ideal for new builds, refurbishments, and wet environments.

Key Features

• High-Density Insulation: Reduces heat loss into concrete substrates, improving heating performance and cutting energy costs.
• Moisture & Rot Proof: Fully resistant to water ingress, perfect for kitchens, bathrooms, and wet rooms.
• Minimal Build-Up Height: Available in slim 6mm and 10.5mm thicknesses, suited for both new installations and refurbishments.
• Easy to Handle: Lightweight boards are simple to cut and install, saving time on-site.
• Durable & Long-Lasting: Robust insulation maintains its efficiency over the lifetime of the heating system.
• Certified Performance: Compressive strength of 300 kPa and tested to relevant UK standards.

Technical Specifications

Applications

• Concrete subfloors in residential and commercial properties.
• Bathrooms, wet rooms, kitchens, and other areas requiring moisture protection.
• Retrofit and new build projects seeking improved underfloor heating efficiency.

Why Choose ThermoSphere Concrete Insulation Boards?

• Up to 50% increase in heating system efficiency.
• Moisture and rot proof for long-term performance.
• Slimline options for systems where build-up height is critical.
• Trusted UK quality and suitability for all electric underfloor heating applications.