Insulation Board 40mm


- Versatile Celotex GA4000 insulation boards for floors, walls, and roofs.
- Low emissivity foil face enhances thermal performance.
- Environmentally friendly, durable, lightweight, and easy to install with class 1 fire rating.
- Regular price
- £11.17£13.40
- Sale price
- £11.17 £13.40
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- Durable Celotex TB4000 Insulation Board
- Exceptional thermal conductivity (0.022W/mK)
- Cost-effective, strong, easy to install, and long-lasting
- Regular price
- £11.17£13.40
- Sale price
- £11.17 £13.40
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- Regular price
- £16.50£19.80
- Sale price
- £16.50 £19.80
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- Eurothane® GP is a high performance, lightweight PIR insulation board, easy to cut, handle, and install for various applications like floors, pitched roofs, internal walls, ceilings, and lofts.
- It is highly favored by contractors and installers for its excellent thermal performance with a λ value of 0.022 W/mK.
- The product ensures a quick and easy installation process, making it an ideal insulation solution.
- Regular price
- £11.17£13.40
- Sale price
- £11.17 £13.40
Was £0.00Sold out


- Maximize Energy Efficiency: Thermal conductivity of 0.022 W/mK for reduced heat loss and lower bills.
- Compatibility with Underfloor Heating: Seamless integration for comfort and luxury without compromise.
- Cost Savings & Versatility: Lightweight, easy installation, and suitable for various floor types.
- Regular price
- £106.95£128.34
- Sale price
- £106.95 £128.34
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- Stable R-value: 3x more effective
- Moisture-resistant, fireproof, eco-friendly
- Easy to install, reduces heating bills
- Regular price
- £811.89£974.27
- Sale price
- £811.89 £974.27
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- Lightweight PIR insulation board
- High thermal performance & strength
- Eco-friendly, water-resistant, easy to cut
- Regular price
- £11.17£13.40
- Sale price
- £11.17 £13.40
Was £0.00Sold out


- Effortless insulation with Kingspan Thermapitch TP10.
- High density increases habitable space by up to 15%.
- Trusted foil-facing technology prevents moisture buildup.
- Regular price
- £106.95£128.34
- Sale price
- £106.95 £128.34
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- Superior thermal insulation with 0.022 W/mK conductivity
- 1200 x 450 mm boards, A+ rated for energy efficiency
- Zero CO2 emissions, CFC/HCFC free, easy installation
- Regular price
- £43.80£52.56
- Sale price
- £43.80 £52.56
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- Superior rigid insulation: TW55 boasts low GWP, zero ODP, and a thermal conductivity of 0.022 W/m.K.
- User-friendly installation: Ideal for steel/timber frames, CFC/HCFC-free, and water vapor resistant.
- Long-lasting quality: Non-fibrous core, eco-conscious, and available in various sizes at Insulation4less.co.uk.
- Regular price
- £106.95£128.34
- Sale price
- £106.95 £128.34
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- All-in-one Eco-versal Insulation Board for thermal conductivity (0.022 W/mK)
- Rigid PIR core with aluminum composite foil facing, perfect for roofs, walls, and floors
- Lightweight, easy to cut, and install compared to some other commonly used insulants; offers warmth and durability
- Regular price
- £11.17£13.40
- Sale price
- £11.17 £13.40
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- Premium lower lambda insulation: Kingspan Kooltherm K103 Floorboard enhances flooring performance with fibre-free phenolic core.
- Durable construction: Glass tissue facings, autohesively bonded, ensure lasting quality and ease of installation.
- Trusted quality: Manufactured underquality standards for safety and reliability.
- Regular price
- £285.00£342.00
- Sale price
- £285.00 £342.00
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- Premium insulation board: Kingspan Thermaroof TR26
- Fibre-free phenolic core, ISO certified
- Size: 2.4 x 1.2m, 0.019 W/mK conductivity
- Regular price
- £245.20£294.24
- Sale price
- £245.20 £294.24
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- Efficient insulation: Thermal conductivity of 0.022 W/mK for top-notch performance.
- Robust stability: Exceeds 125 kPa at 10% compression for lasting durability.
- Moisture prevention: High water vapor resistance (100 MNs/g) for a clear cavity.
- Regular price
- £45.90£55.08
- Sale price
- £45.90 £55.08
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- Regular price
- £203.20£243.84
- Sale price
- £203.20 £243.84
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- Regular price
- £1,223.33£1,468.00
- Sale price
- £1,223.33 £1,468.00
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- Regular price
- £11.17£13.40
- Sale price
- £11.17 £13.40
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- Regular price
- £1,026.04£1,231.25
- Sale price
- £1,026.04 £1,231.25
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- Regular price
- £760.00£912.00
- Sale price
- £760.00 £912.00
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- Eurowall® Cavity is a high-performance solution for cavity walls, designed with precision-cut edges to minimize gaps between boards.
- It features a low emissivity facing for improved thermal resistance within the cavity, with a thermal performance of λ = 0.022 W/mK.
- It is durable and has limited moisture absorption, making it an ideal choice for cavity walls.
- Regular price
- £0.00£0.00
- Sale price
- £0.00 £0.00
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We're sorry to inform you that we no longer supply the Ballytherm 2.4m x 1.2m insulation product. However, we have several other high quality alternatives to meet your insulation needs.
Thank you for choosing Insulation4Less for your insulation needs. If you have any questions or need further assistance, feel free to contact our customer support team.
- Regular price
- £16.20£19.44
- Sale price
- £16.20 £19.44
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- Regular price
- £0.00£0.00
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- £0.00 £0.00
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- Regular price
- £91.55£109.86
- Sale price
- £91.55 £109.86
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- Regular price
- £16.50£19.80
- Sale price
- £16.50 £19.80
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- Wood Fibre Insulation Boards SE
- Covers 0.81m² per board, low thermal conductivity
- Euro class E fire safety, lime plaster compatible
- Regular price
- £4.48£5.38
- Sale price
- £4.48 £5.38
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- Regular price
- £27.93£33.52
- Sale price
- £27.93 £33.52
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- Regular price
- £124.44£149.33
- Sale price
- £124.44 £149.33
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- Regular price
- £17.33£20.80
- Sale price
- £17.33 £20.80
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Welcome to our focused category, housing a range of 40mm Insulation Boards which are quintessential for an array of insulating applications across commercial, industrial, and residential projects.
Exploring Product Variants
Composite Insulated Roof Panels
Amongst our range are products like the 333 Box Profile Composite Insulated Roof Panels by CLADCO. Ideal for those seeking a robust, durable, and highly insulative roofing solution, these panels, available in Goosewing Grey, seamlessly integrate with varied architectural designs and are versatile across several types of roof installations. These insulated panels are particularly beneficial for:
- Industrial Roofing: For factories and warehouses, ensuring a stable internal temperature.
- Agricultural Buildings: Protecting goods and livestock from external weather conditions.
Commercial Spaces: Providing a durable and energy-efficient roofing solution.
Versatility in the Insulation Board
With the generalised thickness of 40mm, the insulation boards in this category serve various purposes across different sectors owing to their adept insulating properties. These boards are applicable for:
- Wall Insulation: Enhance thermal performance by reducing heat loss through walls.
- Floor Insulation: Ensure underfoot comfort and minimise energy expenditure.
Roof Insulation: Regulate indoor climates and enhance building envelope efficiency.
Guiding You to Make an Informed Decision
Climate Considerations
Choose a product that caters to your regional climate. For harsher climates, opt for insulation boards like the composite roof panels that offer superior thermal resistance and are designed to withstand external elements effectively.
Building Requirements
Pay attention to the structural needs and compliance standards of your building. Ensure that the chosen insulation board aligns with the architectural and regulatory stipulations.
Budget-friendly Options
While exact prices are dynamic, our range offers an assortment of options to cater to various budget ranges. It’s crucial to balance your budgetary considerations with the essential features that your project demands.
Environmental Impact
Evaluate products on their environmental impact and sustainability. Engage with insulation boards that not only shield your spaces thermally but are also aligned with eco-conscious practices.