Foil Backed Insulation Board

If you're looking for a high quality, low cost insulation board, look no further than Insulation4less. We offer a wide range of foil backed insulation boards that are perfect for a variety of applications. Whether you're insulating a new home or office building, or retrofitting an existing structure, our insulation boards will help you achieve the perfect thermal performance. We also offer free delivery on all eligible orders, so you can be sure you are getting great value for money. So why wait? Browse below and take advantage of our low prices on insulation boards.
21 products
Celotex GA4000 General Purpose PIR Insulation Board 2.4m x 1.2m (All Sizes)
Celotex GA4000 General Purpose PIR Insulation Board 2.4m x 1.2m (All Sizes)
Free Delivery
on orders over £300
Vendor
Celotex
Celotex GA4000 General Purpose PIR Insulation Board 2.4m x 1.2m (All Sizes)
  • 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
Was £0.00
£11.17 £13.40
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Celotex TB4000 Insulation Board 1.2m x 2.4m - 25mm to 40mm
Celotex TB4000 Insulation Board 1.2m x 2.4m - 25mm to 40mm
Free Delivery
on orders over £300
Vendor
Celotex
Celotex TB4000 Insulation Board 1.2m x 2.4m - 25mm to 40mm
  • 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
Was £0.00
£11.17 £13.40
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Celotex XR4000 Insulation Board 1.2m x 2.4m - 110mm to 200mm
Celotex XR4000 Insulation Board 1.2m x 2.4m - 110mm to 200mm
Free Delivery
on orders over £300
Vendor
Celotex
Celotex XR4000 Insulation Board 1.2m x 2.4m - 110mm to 200mm
  • Environmental-friendly PIR insulation board with foil facings
  • High thermal conductivity (0.022W/mK) eliminates cold spots, reduces energy usage, and lowers bills
  • Certified with A+ rating, BBA certificates, and meets Building Regulations; easy to install, strong, and long-lasting
Regular price
£35.90£43.08
Sale price
Was £0.00
£35.90 £43.08
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Recticel Eurothane GP (2.4m x 1.2m) All Sizes
Recticel Eurothane GP (2.4m x 1.2m) All Sizes
Free Delivery
on orders over £300
Vendor
Recticel
Recticel Eurothane GP (2.4m x 1.2m) All Sizes
  • 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
Was £0.00
£11.17 £13.40
Sold out
Kingspan Thermafloor TF70 Floor Board (All Sizes) 2.4m x 1.2m
Kingspan Thermafloor TF70 Floor Board (All Sizes) 2.4m x 1.2m
Free Delivery
on orders over £300
Vendor
Kingspan
Kingspan Thermafloor TF70 Floor Board (All Sizes) 2.4m x 1.2m
  • 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
Was £0.00
£106.95 £128.34
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Mannok Insulation Board 1.2m x 2.4m (All Sizes)
Mannok Insulation Board 1.2m x 2.4m (All Sizes)
Vendor
Mannok
Mannok Insulation Board 1.2m x 2.4m (All Sizes)
  • Lightweight PIR insulation board
  • High thermal performance & strength
  • Eco-friendly, water-resistant, easy to cut
Regular price
£11.17£13.40
Sale price
Was £0.00
£11.17 £13.40
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Kingspan Thermapitch TP10 Pitched Roof Board (All Sizes) 2.4m x 1.2m
Kingspan Thermapitch TP10 Pitched Roof Board (All Sizes) 2.4m x 1.2m
Free Delivery
on orders over £300
Vendor
Kingspan
Kingspan Thermapitch TP10 Pitched Roof Board (All Sizes) 2.4m x 1.2m
  • 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
Was £0.00
£106.95 £128.34
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EcoTherm Eco-Versal Insulation Board 2.4m x 1.2m - All Thicknesses
EcoTherm Eco-Versal Insulation Board 2.4m x 1.2m - All Thicknesses
Free Delivery
on orders over £300
Vendor
Ecotherm
EcoTherm Eco-Versal Insulation Board 2.4m x 1.2m - All Thicknesses
  • 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
Was £0.00
£11.17 £13.40
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Kingspan Kooltherm K107 Pitched Roof Board (All Sizes) - 2.4m x 1.2m
Kingspan Kooltherm K107 Pitched Roof Board (All Sizes) - 2.4m x 1.2m
Free Delivery
on orders over £300
Vendor
Kingspan
Kingspan Kooltherm K107 Pitched Roof Board (All Sizes) - 2.4m x 1.2m
  • 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
Was £0.00
£245.20 £294.24
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Kingspan Thermaroof TR26 Flat Roof Board (All Sizes) 2400mm x 1200mm
Kingspan Thermaroof TR26 Flat Roof Board (All Sizes) 2400mm x 1200mm
Free Delivery
on orders over £300
Vendor
Kingspan
Kingspan Thermaroof TR26 Flat Roof Board (All Sizes) 2400mm x 1200mm
  • High-performance rigid polyisocyanurate insulation.
  • Compatible with PVC single-ply waterproofing.
  • Resistant to water vapor, solvents, fungi, and rodents.
Regular price
£0.00£0.00
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£0.00 £0.00
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Kingspan Thermawall TW50 Cavity Wall Board 450mm x 1200mm - All Sizes
Kingspan Thermawall TW50 Cavity Wall Board 450mm x 1200mm - All Sizes
Free Delivery
on orders over £300
Vendor
Kingspan
Kingspan Thermawall TW50 Cavity Wall Board 450mm x 1200mm - All Sizes
  • 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
Was £0.00
£45.90 £55.08
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Kingspan Kooltherm K108 Cavity Board (All Sizes) 1200mm x 450mm
Kingspan Kooltherm K108 Cavity Board (All Sizes) 1200mm x 450mm
Free Delivery
on orders over £300
Vendor
Kingspan
Kingspan Kooltherm K108 Cavity Board (All Sizes) 1200mm x 450mm
  • Premium rigid phenolic core
  • Low emissivity foil facing
  • Ultra-low thermal conductivity of 0.019 W/mK
Regular price
£98.45£118.14
Sale price
Was £0.00
£98.45 £118.14
Sold out
Kingspan Kooltherm K112 Framing Board (All Sizes) - 2.4m x 1.2m
Kingspan Kooltherm K112 Framing Board (All Sizes) - 2.4m x 1.2m
Free Delivery
on orders over £300
Vendor
Kingspan
Kingspan Kooltherm K112 Framing Board (All Sizes) - 2.4m x 1.2m
  • Premium insulation board: Kingspan Kooltherm K112 Framing Board
  • Exceptional thermal conductivity: 0.019 W/m.K
  • Size: 2.4m x 1.2m, ISO-certified, eco-friendly, durable
Regular price
£314.95£377.94
Sale price
Was £0.00
£314.95 £377.94
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Thermaclass Cavity Wall 21 (1190mm x 450mm) - All Sizes
Thermaclass Cavity Wall 21 (1190mm x 450mm) - All Sizes
Free Delivery
on orders over £300
Vendor
Celotex
Thermaclass Cavity Wall 21 (1190mm x 450mm) - All Sizes
  • Thermaclass Cavity Wall 21: High thermal performance PIR insulation (0.021 W/m.K).
  • Engineered tongue and groove joint for seamless installation.
  • Lightweight, BBA approved with low emissivity foil facing for weather protection.
Regular price
£1,165.00£1,398.00
Sale price
Was £0.00
£1,165.00 £1,398.00
Sold out
Kingspan Kooltherm K15 Rainscreen Board (All Sizes) 2.4m x 1.2m
Kingspan Kooltherm K15 Rainscreen Board (All Sizes) 2.4m x 1.2m
Free Delivery
on orders over £300
Vendor
Kingspan
Kingspan Kooltherm K15 Rainscreen Board (All Sizes) 2.4m x 1.2m
Regular price
£0.00£0.00
Sale price
Was £0.00
£0.00 £0.00
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Recticel Eurothane Eurodeck 2.4m x 1.2m - All Sizes
Recticel Eurothane Eurodeck 2.4m x 1.2m - All Sizes
Free Delivery
on orders over £300
Vendor
Recticel
Recticel Eurothane Eurodeck 2.4m x 1.2m - All Sizes
  • Eurothane® Eurodeck is a thermal insulation board designed for use in warm flat roofs under mechanically fixed single-ply membrane waterproofing systems.
  • It offers high compressive strength, excellent dimensional stability, and compatibility with numerous waterproofing systems.
  • The board is faced on both sides with a multi-layer coated aluminum foil, ensuring optimum performance in both new build and refurbishment projects.
Regular price
£0.00£0.00
Sale price
Was £0.00
£0.00 £0.00
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Unilin Thin-R PIR 125mm x 2.4m x 1.2m
Unilin Thin-R PIR 125mm x 2.4m x 1.2m
Vendor
Unilin
Unilin Thin-R PIR 125mm x 2.4m x 1.2m
Regular price
£51.95£62.34
Sale price
Was £0.00
£51.95 £62.34
Sold out
Recticel Eurothane GP 2.4m x 1.2m x 100mm
Recticel Eurothane GP 2.4m x 1.2m x 100mm
Free Delivery
on orders over £300
Vendor
Recticel
Recticel Eurothane GP 2.4m x 1.2m x 100mm
  • Eurothane® GP is a high-performance, lightweight PIR insulation board that is easy to cut, handle, and install, suitable for floors, pitched roofs, internal walls, ceilings, and lofts.
  • It is a popular choice among contractors and installers due to its versatility and ease of use in multiple applications.
  • The product offers excellent thermal performance with a thermal conductivity of λ = 0.022 W/mK, ensuring quick and efficient installation.
Regular price
£28.99£34.79
Sale price
Was £0.00
£28.99 £34.79
Sold out
Recticel Eurothane GP 2.4m x 1.2m x 75mm
Recticel Eurothane GP 2.4m x 1.2m x 75mm
Free Delivery
on orders over £300
Vendor
Recticel
Recticel Eurothane GP 2.4m x 1.2m x 75mm
  • Eurothane® GP is a high-performance, lightweight PIR insulation board, easy to cut, handle, and install.
  • It is ideal for various applications such as floors, pitched roofs, internal walls, ceilings, and lofts, with good thermal performance (λ = 0.022 W/mK).
  • Preferred by contractors and installers for its quick and easy installation process.
Regular price
£23.65£28.38
Sale price
Was £0.00
£23.65 £28.38
Sold out
Recticel Eurothane GP 2.4m x 1.2m x 50mm
Recticel Eurothane GP 2.4m x 1.2m x 50mm
Free Delivery
on orders over £300
Vendor
Recticel
Recticel Eurothane GP 2.4m x 1.2m x 50mm
  • Eurothane® GP is a high-performance, lightweight PIR insulation board, easy to cut, handle, and install.
  • It is suitable for multiple applications including floors, pitched roofs, internal walls, ceilings, and lofts with a good thermal performance of λ = 0.022 W/mK.
  • Preferred by contractors and installers, it offers a quick and easy installation process.
Regular price
£17.15£20.58
Sale price
Was £0.00
£17.15 £20.58
Sold out
Recticel Eurothane GP 2.4m x 1.2m x 25mm
Recticel Eurothane GP 2.4m x 1.2m x 25mm
Free Delivery
on orders over £300
Vendor
Recticel
Recticel Eurothane GP 2.4m x 1.2m x 25mm
  • Eurothane® GP is a high-performance, lightweight PIR insulation board, easy to cut, handle, and install.
  • It's suitable for various applications like floors, pitched roofs, internal walls, ceilings, and lofts with good thermal performance (λ = 0.022 W/mK).
  • Preferred by contractors and installers for its quick and easy installation process.
Regular price
£11.17£13.40
Sale price
Was £0.00
£11.17 £13.40
Sold out

Indispensable to an array of construction projects, Foil Backed Insulation Boards serve to enhance thermal efficiency, ensuring that structures are adeptly shielded from the often-harsh embrace of external temperatures. In the diverse assortment available at Insulation4Less, you’ll discover an array of options, each meticulously designed to cater to various application needs within the domains of roofing, flooring, and wall installations, and more.

Pioneering Performance with PIR Insulation Boards

Celotex and Recticel: Renowned for their steadfast performance and resilient thermal capabilities, PIR boards from brands like Celotex and Recticel ensure multi-faceted utility across numerous structural elements, including walls, floors, and roofs. Their varied thickness, as observed in offerings like the Celotex GA4000 and Recticel Eurothane GP, provides adaptable solutions, thereby addressing varied thermal requirements and building specifications.

Luxuriating in the Robustness of Phenolic Foam Insulation

Kingspan: A name often synonymous with formidable quality in insulation, they presents a range that predominantly utilises phenolic foam, notorious for its low thermal conductivity and fire-resistant properties. Products like Kingspan Thermawall TW50 and Kingspan Kooltherm K112 offer solutions tailored for distinct applications including cavity wall insulation and framing board insulation, respectively, each ensuring a robust defence against thermal bridging and heat loss.

Exemplifying Versatility with Multi-Purpose Insulation Boards

EcoTherm: EcoTherm Eco-versal Insulation Boards pronounce themselves as a quintessential choice for a wide range of applications, furnishing both builders and DIY enthusiasts with a product that vows steadfast thermal performance across varied building elements, owing to its universality in application.

Steadfast & Resilient Insulation with Specific Purposed Boards

Mannok and Unilin: With Mannok offering a generalised utility, and Unilin putting forth specialised PIR boards, both brands curate products that extend resilient and steadfast thermal performance. Ensuring that the structures are not only thermally well-guarded but also, that they adhere to regulatory compliance.

Guiding Your Choice in Foil Backed Insulation Boards

Deliberating Thickness and R-Values

When selecting the appropriate insulation board, consider the thickness and the resultant R-value, ensuring that your choice adheres to the building’s thermal requirements and compliance standards.

Purpose-Oriented Selection

From roofs (like with Kingspan Thermapitch TP10) to floors (exemplified by Kingspan Thermafloor TF70) and walls (such as Kingspan Thermawall TW50), discern the specific utility of each board, ensuring it aligns with your project’s demands.

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