Underfloor Heating Insulation

Welcome to the Underfloor Heating Insulation category at Insulation4Less, where we specialise in providing top-quality insulation solutions for your underfloor heating needs. Our diverse range of products caters to various requirements, ensuring that your underfloor heating system operates efficiently and effectively.

What is Underfloor Heating Insulation?

Underfloor heating insulation refers to specially designed insulation boards or panels that are installed beneath underfloor heating systems, whether electric or water-based. These boards act as a thermal barrier, stopping heat from escaping downward and ensuring it rises into the room above. The result? Better efficiency, faster heat-up times, and more consistent warmth across your floor space.

Product Overview

PIR Insulation Boards

Our range includes several types of Polyisocyanurate (PIR) insulation boards, known for their high thermal efficiency and strength. Brands like Celotex and Kingspan offer products like the GA4000 General Purpose PIR Insulation Board and the Kingspan Thermafloor TF70 Floor Board. These boards are ideal for various floor types, providing excellent insulation and enhancing the efficiency of your underfloor heating system.

Specialised Kingspan Boards

Kingspan, a leading brand in insulation, offers specialised products such as the Kooltherm K103 Floorboard, Thermaroof TR27 Flat Roof Board, and Kooltherm K107 Pitched Roof Board. These products are designed for specific applications, ensuring optimal performance in unique underfloor heating scenarios.

Insulated Plasterboard and Cavity Boards

For multifunctional applications, Kingspan’s Kooltherm K118 Insulated Plasterboard is an excellent choice, combining insulation with plasterboard for a two-in-one solution. Additionally, the Kooltherm K108 Cavity Board is perfect for cavity wall applications, providing enhanced thermal performance.

Specialized Solutions

For more targeted applications, products like the Kooltherm K112 Framing Board and Kooltherm K12 Framing Board are available. These are particularly useful in frame-type structures, offering both insulation and structural support.

IKO Enertherm

The IKO Enertherm ALU PIR is another notable product in our range. It is known for its robustness and versatility, making it suitable for a variety of underfloor heating applications.

Benefits of Underfloor Heating Insulation Board

• Improved Energy Efficiency: Underfloor Heat Insulating boards reduce heat loss and help your system work smarter, not harder, cutting down on energy bills.
• Faster Heating Response: Insulate the place. With insulation in place, warmth reaches your room quicker, giving you instant comfort.
• Even Heat Distribution: No more cold spots—insulation helps distribute heat evenly across the floor.
• Enhanced Floor Comfort: Underfloor Heating Insulation slabs keep floors warm underfoot during cold weather, adding luxurious comfort to your home.
• Lower Carbon Footprint: By minimising energy waste, Underfloor Heating Insulation panel support more eco-friendly, sustainable living.

Choosing the Right Board to Insulate 

When selecting underfloor heating insulation, consider the following factors:

• Floor Type: Different floors (concrete, wooden, etc.) may require specific types of insulation.
• Thermal Conductivity: Opt for a material with low thermal conductivity for improved insulation efficiency.
• Thickness and Size: Ensure the product dimensions align with your project requirements.
• Specific Use Case: Some products are tailored to particular applications, such as cavity walls or flat roofs.

 Applications of Underfloor Heating Insulation

• New Build Homes – Underfloor Heating Insulation ensure your heating system meets SAP and Building Regulations.
• Renovations & Retrofits – Underfloor Heating Insulation upgrade older homes with energy-saving insulation under existing floors.
• Extensions – Underfloor Heating Insulation is perfect for heated floor zones in new kitchen, bathroom, or living space extensions.
• Bathrooms & Kitchens – Underfloor Heating Insulation maximise comfort where tiled flooring is commonly used.
• Suspended Timber Floors – Rigid PIR or foil-faced boards work well between or beneath joists.

Why Choose Insulation4Less?

• Top Brands, Great Prices: We stock leading names like Kingspan, Celotex & IKO—trusted by professionals for quality and performance.
• Huge Range of Sizes & Thicknesses: Find the perfect board for your floor build-up, from 20mm to 100mm and beyond.
• Fast UK Delivery: Get your materials delivered quickly and reliably, wherever you are in the UK.
• Expert Advice at Every Step: Our in-house specialists are here to help you choose the right insulation for your project, domestic or commercial.
• Trade Discounts & Bulk Deals: Planning a bigger job? Benefit from quantity discounts and trade-friendly pricing.

Upgrade your underfloor heating system with our premium insulation boards—designed to maximise energy efficiency and keep your room consistently warm. Whether you're working on bathrooms, water-based or electric systems, our insulation boards and plasterboard options provide a high-performance solution to reduce heat loss and energy consumption. Choose from XPS insulation, foil-faced boards, or rigid foam options—all crafted to suit various installation types and floor finishes. Each board acts as a barrier, helping to retain warmth and create a more comfortable space while saving on energy bills. Ideal for both new builds and retrofit projects, these insulation panels are engineered to work seamlessly with pipes, thermostats, and controls, offering full compatibility with app-controlled or wireless heating setups. Enjoy fast UK delivery and add the right products to your wishlist or get a tailored quote for your next project, all direct from Insulation4Less.