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.

Please note: Delivery times may vary depending on location, with specific details outlined below.

Standard Delivery

UK Mainland 

• Delivery Time: 2–4 working days
• Free Delivery on all orders

Express Delivery

UK Mainland

• Delivery Time: 1–3 working days
• Delivery fee of £15

Channel Islands

• Postcodes Covered: GY*, IM*, JE* 
• Minimum Order: £50
• Delivery Fee: £70

Northern Ireland, Offshore Territories & Scottish Islands 

• Postcodes Covered: BT*, HS*, KW, ZE
• Minimum Order: £50
• Delivery Fee: £35

Same Day Delivery 

• Eligible Postcodes:
  E*, EC*, N*, NW*, SE*, SW*, W*, WC*, HA*, UB*, EN*, IG*, RM*, KT*, SM*, CR*, BR*, DA*, TW*
• Minimum Order: £50
• Same Day Delivery Fee: £60
• Special Requests or Locations:
  For areas outside these postcodes or urgent quotes, please email orders@qualityheating.co.uk and we’ll do our best to accommodate.

Collections

Want to collect your order instead?You’re welcome to do so — just email us at orders@qualityheating.co.uk or message us via WhatsApp with your preferred collection time, and we’ll confirm the details.

Collection address: 284 Water Rd, Unit 9, London, HA0 1HX