Foil or Multifoil insulation is a high performance insulation used for walls, roofs and floors. Generally used to accommodate areas where high insulation values are required with limited space available.
Foil or Multifoil insulation is a high performance insulation used for walls, roofs and floors. Generally used to accommodate areas where high insulation values are required with limited space available.
-
Express Delivery
150mm Celotex XR4150 2.4m X 1.2m
Vendor:CelotexStandardFree Delivery over £380£456Regular price £59.25 £71.10Sale price £59.25 £71.10 Regular priceUnit price per£0.00 -
Fire Stop Slab - All Sizes
Vendor:ARCfromARCFree Delivery over £450£540Regular price £278.76 £334.51Sale price £278.76 £334.51 Regular priceUnit price per£0.00 -
Celotex CW4075 75mm x 1200mm x 450mm
Vendor:CelotexStandardFree Delivery over £380£456Regular price £65.85 £79.02Sale price £65.85 £79.02 Regular priceUnit price per£0.00 -
Celotex CW4085 85mm (Pallet Of 112 Sheets)
Vendor:CelotexStandardFree Delivery over £380£456Regular price £1,335.00 £1,602.00Sale price £1,335.00 £1,602.00 Regular priceUnit price per£0.00 -
Express Delivery
100mm Celotex GA4100 2.4m x 1.2m
Vendor:CelotexStandardFree Delivery over £380£456Regular price £39.50 £47.40Sale price £39.50 £47.40 Regular priceUnit price per£0.00 -
Superfoil SF19BB (All Sizes)
Vendor:SuperfoilfromRegular price £97.80 £117.36Sale price £97.80 £117.36 Regular priceUnit price per£0.00 -
SuperFOIL Standard Foil Tape 100mm x 20m
Vendor:SuperfoilRegular price £6.93 £8.32Sale price £6.93 £8.32 Regular priceUnit price per£0.00£0.00 -
Superfoil General Purpose Wrap 3mm x 7m x 1m
Vendor:SuperfoilRegular price £12.90 £15.48Sale price £12.90 £15.48 Regular priceUnit price per£0.00 -
Unilin Thin-R PIR 25mm x 2.4m x 1.2m
Vendor:UnilinUnilinFree Delivery over £350£420Regular price £15.25 £18.30Sale price £15.25 £18.30 Regular priceUnit price per£0.00 -
Profoil 861 Vapour Control Layer - 2m x 50m
Vendor:ProctorProctorFree Delivery over £1,000£1,200Regular price £384.54 £461.45Sale price £384.54 £461.45 Regular priceUnit price per£0.00 -
Karma Acoustic Barrier WB
Vendor:KarmafromRegular price £21.43 £25.72Sale price £21.43 £25.72 Regular priceUnit price per£0.00 -
Tyvek Airguard Reflective Vapour Barrier 50m x 1.5m
Vendor:TyvekStandardFree Delivery over £380£456Regular price £155.28 £186.34Sale price £155.28 £186.34 Regular priceUnit price per£0.00 -
Fire Stop Full Slab - 100 x 600 x 1200mm
Vendor:ARCARCFree Delivery over £450£540Regular price £63.41 £76.09Sale price £63.41 £76.09 Regular priceUnit price per£0.00 -
Aluminium Foil Lap Tape - All Sizes
Vendor:NoviafromRegular price £21.30 £25.56Sale price £21.30 £25.56 Regular priceUnit price per£0.00 -
Kingspan Kooltherm K112 Framing Board (All Sizes) - 2.4m x 1.2m
Vendor:KingspanfromStandardFree Delivery over £380£456Regular price £346.48 £415.78Sale price £346.48 £415.78 Regular priceUnit price per£0.00 -
Superfoil SF19 Plus (All Sizes)
Vendor:SuperfoilfromRegular price £98.00 £117.60Sale price £98.00 £117.60 Regular priceUnit price per£0.00 -
SuperFOIL SFBA MP 3mm x 1.5m x 25m
Vendor:SuperfoilRegular price £68.40 £82.08Sale price £68.40 £82.08 Regular priceUnit price per£0.00£0.00 -
SuperFOIL SFBB 1mm x 1.5m x 25m
Vendor:SuperfoilRegular price £59.99 £71.99Sale price £59.99 £71.99 Regular priceUnit price per£0.00 -
SuperFOIL Superior Foil Tape - All Sizes
Vendor:SuperfoilfromRegular price £10.13 £12.16Sale price £10.13 £12.16 Regular priceUnit price per£0.00£0.00 -
Superfoil SF60 100mm x 1.5m x 8m
Vendor:SuperfoilRegular price £211.00 £253.20Sale price £211.00 £253.20 Regular priceUnit price per£0.00 -
Profoil Aluminium Reflective Foil Tape - 100mm x 45m Roll
Vendor:ProctorProctorFree Delivery over £1,000£1,200Regular price £11.80 £14.16Sale price £11.80 £14.16 Regular priceUnit price per£0.00 -
Spacetherm Wallboard VCL (All Sizes) 2.4m x 1.2m
Vendor:ProctorfromProctorFree Delivery over £1,000£1,200Guide Price: £277.32 Guide Price: £332.78 -
Rainscreen Barrier - All Sizes
Vendor:ARCfromARCFree Delivery over £450£540Regular price £328.29 £393.95Sale price £328.29 £393.95 Regular priceUnit price per£0.00 -
SuperFOIL SFTV (1mm x 1.5m) All Lengths
Vendor:SuperfoilfromRegular price £48.60 £58.32Sale price £48.60 £58.32 Regular priceUnit price per£0.00£0.00 -
Superfoil SFBA MP - Foil Insulation Roll
Vendor:SuperfoilRegular price £68.40 £82.08Sale price £68.40 £82.08 Regular priceUnit price per£0.00£0.00 -
Express Delivery
Celotex XR4000 Insulation Board 1.2m x 2.4m - All Sizes
Vendor:CelotexfromStandardFree Delivery over £380£456Regular price £48.50 £58.20Sale price £48.50 £58.20 Regular priceUnit price per£0.00 -
Eco-Closer Plus - All Sizes
Vendor:ARCfromARCFree Delivery over £450£540Regular price £55.48 £66.58Sale price £55.48 £66.58 Regular priceUnit price per£0.00 -
Rockwool Cladding Roll - All Sizes
Vendor:RockwoolfromStandardFree Delivery over £380£456POA -
Superfoil SF40 65mm x 1.5m x 10m
Vendor:SuperfoilRegular price £196.00 £235.20Sale price £196.00 £235.20 Regular priceUnit price per£0.00 -
SuperFOIL SFTV 1L 1mm x 1.2m x 20m
Vendor:SuperfoilRegular price £27.50 £33.00Sale price £27.50 £33.00 Regular priceUnit price per£0.00 -
Bitumen Damping Sheet Alu Facing 1.5 x 1m - All Sizes
Vendor:H And H AcousticsfromPOA -
Superfoil SF40BB 75mm x 1.5m x 10m
Vendor:SuperfoilRegular price £196.00 £235.20Sale price £196.00 £235.20 Regular priceUnit price per£0.00 -
Superfoil SFBA MP 3mm x 0.75m x 50m
Vendor:SuperfoilRegular price £68.40 £82.08Sale price £68.40 £82.08 Regular priceUnit price per£0.00£0.00 -
SuperFOIL SFTV 1mm x 1.5m x 25m
Vendor:SuperfoilRegular price £48.60 £58.32Sale price £48.60 £58.32 Regular priceUnit price per£0.00£0.00 -
Superfoil Pipe Wrap 8cm x 7.5m
Vendor:SuperfoilRegular price £4.80 £5.76Sale price £4.80 £5.76 Regular priceUnit price per£0.00 -
25mm Ductilag Sheet 2 x 1.2m
Vendor:H And H AcousticsPOA
Foil Insulation Online | Foil Insulation Board
Welcome to the Foil Insulation category on Build4Less, where you'll find a diverse range of high-quality foil insulation products suitable for a variety of applications. As a foil insulation expert, I am here to guide you through the various options available and help you select the right product for your specific needs.
Product Groups and Uses
Foil Tape - All Sizes
Foil tape is an essential accessory for any insulation project. It's used to seal seams and joints, ensuring a continuous thermal barrier. This tape comes in various sizes, catering to different project scales.
Multifoil Insulation Rolls
- Thinsulex TLX Gold and Silver Multifoil: These are premium, high-performance insulation solutions. The Gold variant is designed for superior insulation, reflecting more heat, while the Silver variant balances cost and performance. They are typically used in roofing and wall applications, providing excellent thermal insulation and vapour control.
- Thinsulex TLX Multifoil in Various Colours: Offering the same high-quality insulation properties, these rolls come in different colours, allowing for aesthetic flexibility alongside functional insulation.
Actis Products
- Actis Boost'R Hybrid: This reflective breather membrane is a dual-function product, providing both thermal insulation and moisture control. It's ideal for use in roofing, where it enhances insulation performance while allowing moisture to escape.
- HControl REFLEX+ and Hybrid: These products offer a combination of thermal insulation and vapour control. The Hybrid variant, with its thicker profile, is well-suited for extreme weather conditions.
- Eolis HC: Designed for roof and wall applications, this product provides excellent thermal resistance, making it a great choice for energy-efficient building designs.
- Actis Hybris: Available in various sizes, Actis Hybris is a versatile product suitable for walls, roofs, and floors, offering excellent thermal insulation properties.
Selecting the Right Product
When choosing the right foil insulation, consider the following:
- Application Area: Roof, wall, or floor insulation requires different types of products.
- Thermal Performance: Higher performance products like Thinsulex TLX Gold are ideal for environments needing superior insulation.
- Breathability: If moisture control is a priority, products like Actis Boost'R Hybrid are recommended.
- Installation Ease: Consider the size and flexibility of the insulation for ease of installation in your specific project.
Each product in this category has been selected for its quality, performance, and reliability. Whether you're a professional contractor or a DIY enthusiast, you'll find the right foil insulation solution for your project here at Build4Less.
Benefits of Foil Insulation
Foil insulation is a highly effective thermal insulation solution designed to improve energy efficiency by reducing radiant heat transfer. Suitable for roofs, walls, floors, and loft spaces, foil insulation helps create a more comfortable indoor environment while lowering heating and cooling costs. Lightweight and easy to install, it is widely used in both new build and refurbishment projects.
Key Benefits
- Reflects radiant heat to improve thermal performance
- Helps reduce energy consumption and heating costs
- Lightweight and easy to handle
- Suitable for roofs, walls, floors, and lofts
- Helps improve year-round comfort
- Space-saving insulation solution
- Easy to cut and install
- Suitable for residential and commercial applications
Applications of Foil Insulation
Foil insulation is a versatile product that can be used throughout the building envelope to improve energy efficiency.
Common Applications
- Loft insulation installations
- Pitched and flat roof insulation
- Timber frame construction
- Internal and external wall insulation
- Floor insulation systems
- Home extensions and renovations
- Garden rooms and outbuildings
- Commercial building projects
Why Choose Foil Insulation?
Foil insulation is one of the most effective ways to reduce radiant heat loss and improve overall building performance. Modern multifoil insulation products combine layers of reflective materials and insulating wadding to deliver excellent thermal efficiency in a slim, easy-to-install format. Whether used as roof insulation, wall insulation, or floor insulation, foil-based systems help create energy-efficient buildings while maximising usable space.
Leading products from vendor SuperFOIL have become a popular choice among builders and homeowners due to their proven performance and ease of installation. Options such as SuperFOIL and regular multifoil products can be used in a variety of applications, helping reduce heat loss and improve thermal comfort. Many projects also combine insulation foil products with traditional insulation board systems to achieve enhanced thermal performance.
The reflective properties of reflective foil insulation help improve the effectiveness of the overall building envelope, while the lightweight design makes installation faster and more convenient than many traditional insulation materials. Whether you are insulating a loft, extension, floor, wall, or roof, foil insulation provides a practical and efficient solution for modern construction and renovation projects.
Why Buy from Build4Less?
- A wide range of foil insulation products is available
- Trusted brands including SuperFOIL
- Suitable for roofs, walls, floors, and lofts
- Competitive online prices
- Fast UK delivery on selected products
- Expert insulation advice and technical support
Complete your insulation project with our Roof Insulation collection, designed to improve thermal performance and reduce heat loss through the roof. You may also be interested in our Loft Insulation range for effective thermal upgrades in roof spaces. For rigid thermal solutions, browse our Insulation Boards collection, while our Floor Insulation range helps improve comfort and energy efficiency underfoot.
Frequently Asked Questions
What is foil insulation used for?
Foil insulation is used to reduce radiant heat transfer and improve thermal efficiency in roofs, walls, floors, and loft spaces.
How does foil insulation work?
Foil insulation reflects radiant heat away from or back into a building, helping to maintain comfortable indoor temperatures.
Is multifoil insulation effective?
Yes, multifoil insulation combines reflective layers and insulating materials to provide excellent thermal performance.
Can foil insulation be used with insulation boards?
Yes, foil insulation is often used alongside insulation board products to achieve enhanced thermal efficiency.
Is foil insulation suitable for walls and floors?
Yes, foil insulation can be installed in wall insulation and floor insulation systems as well as roofing applications.
Is foil insulation easy to install?
Yes, foil insulation is lightweight, flexible, and generally easier to handle than many traditional insulation materials.
Rated Excellent



