Multi Foil Insulation


SuperFOIL Insulation Standard Uses
  • 3 IN 1

    Acts as a foil insulation,Breather Membrane & Radiant barrier


    Certified by BBA & BTTG


    U-Value Solutions To achieve U0.18, U0.13, U0.1


    Ideal for new build & retrofit


    Made From 40% Recycled Materials

Key Features

  • Efficient 3 in 1 Design – Insulation with built in breathable membrane and radiant barrier

  • Ideal for all roofing and external cladding projects, whether new build, extension or renovation

  • Certified by BBA & BTTG for thermal and vapour performance

  • Easy to install - no specialist tools required

  • Built in 100mm overlap - No bulkiness at joints

  • SuperFOIL can achieve any U value, whether used on its own or in combination with other insulation types

  • Made from 40% recycled materials and fully recyclable


Protect Your Project With Our Breathable Insulation

Here at SuperFOIL, we produce the UK’s highest performing, breathable, multifoil insulation. It has been specifically designed to allow your project to breath. Our ‘BB’ range utilises a highly breathable, reflective top membrane which provides you with a secondary rain barrier, whilst allowing moisture to escape safely away. The remaining layers are perforated which keeps the whole product breathable, whilst still providing high thermal performance. 


The range is CE certified for use as a breathable membrane and water barrier, and is an approved product for building regulations. This means you can take comfort in the fact that you are using a highly reliable,tested product. As with our multifoil range, our breathable products are also 3 in 1. They provide a highly efficient insulation, as well as a radiant barrier and breathable membrane. This means that not only will you be saving on your energy bills, you are protecting your home from condensation and keeping your house at a comfortable temperature, whatever the weather!

By using our range of breathable, multifoil insulation you saving yourself from completing unnecessary work by turning two jobs into one. Our breathable range means that you only have to install one layer, whereas traditional types of insulation would need installation of both a breathable membrane and then insulation.  As well as this, the range also comes with a built in 100mm overlap on the breathable membrane which means you won’t have any excess at joints.


The breathable range can be used as part of the “DUET” system, simply use your chosen SuperFOIL multifoil internally and the breathable range externally for the ultimate solution. It can also be used in a “COMBI” installation, meaning that our products are fully compatible with other types of insulation. Whichever installation type you choose, you can be sure that you will always meet your required values. 

SuperFOIL is easy to install and requires no specialist tools for fitting. Due to its proficient design, you will have minimal wastage, unlike more traditional types of insulation. Our full range is made from 40% recycled materials and is recyclable at the end of its 50+ year lifespan. 


We would always advise that the breather membrane is not unnecessarily exposed to potentially damaging weather such as strong winds or high levels of UV.  If there is the potential that the breather membrane would be subjected to prolonged periods of exposure to these risks, we highly recommend the use of a temporary protection material such as polythene or tarpaulin.     



Say Goodbye to Condensation with our Breathable Insulation! 
SFBB breather Membrane Sample


  • 0.29 R VALUE

    R Value of 0.29 When used in a roof

  • 1mm THICK

    1.5m Wide by 25/50m Long

  • Breathability

    0.115MNs/g Vapour Resistance

SF19BB breathable multi foil insulation Sample


  • 2.22 R VALUE

    R Value of 2.22 When used in a roof

  • 40mm THICK

    1.5m Wide by 10m Long

  • Breathability

    0.115MNs/g Vapour resistance

SF40 FR Product Sample


  • 3.67 R VALUE

    R Value of 3.67 When used in a roof

  • 75mm THICK

    1.5m Wide by 10m Long

  • Breathability

    0.115MNs/g Vapour Resistance

Thermal Performance

Core PerformanceN/A1.454 R Value2.92 R Value
Roof Performance0.29 R Value2.22 R Value3.67 R Value
Wall Performance0.366 R Value2.53 R Value3.98 R Value
Emittance0.30.3 / 0.030.3 / 0.03

Contact our team of experts today for a free, personalised solution for your insulation requirements.

Product Dimensions

Length25 / 50m10m10m
Coverage37.5 / 75m²15m²15m²
Weight5.4 / 10.8kg10kg20kg

Fire Performance

Reaction To Fire (Euroclass)Class D (Behind Plasterboard)Class E (Behind Plasterboard)Class E (Behind Plasterboard)

Additional Information

Water Vapour Resistance0.115MNs/g0.115MNs/g0.115MNs/g
Resistance To Water PenetrationW1W1W1
Tensile Properties (Length)238 / 227 N/50mm238 / 227 N/50mm238 / 227 N/50mm
Tensile Properties (Width)111 / 100 N/50mm111 / 100 N/50mm111 / 100 N/50mm
Resistance to Tearing (Length)179N179N179N
Resistance to Tearing (Width)179N179N179N
Elongation (Length)61 / 57%61 / 57%61 / 57%
Elongation (Width)92 / 87%92 / 87%92 / 87%
Flexibility at Low Temp.-40°C-40°C-40°C

Product Composition

Reflective Coated Breather Membrane111
Perforated Aluminium Coated Reflective Foil PET-38
Perforated Reinforced Heavy Outer Reflective Foil-11
Loft Quilt 80g / m² Layers-49
Total Layers1919

Roof Applications

SF19FR Roof1

Do you have a roofing project to complete? No problem! Our Breathable multi foil insulation can be used in virtually any roofing project whether new build or retrofit. When looking for high performance and slim build-ups, SuperFOIL breathable insulation is for you. Ideal for external use,providing both insulation and a breathable membrane in a single layer.

The SuperFOIL breathable range is the perfect solution for those troublesome, retrofit projects. Our breathable products provide a great performance boost with minimal build up for when space is of the essence. For new builds, they can help to minimise cost whilst allowing innovative design.  

With a vapour resistance of 0.115MNs/g, our breathable multifoil insulation offers the same benefits of a traditional breather membrane but with the added bonus of thermal properties. This means you can be confident using the range, knowing that they will not cause any condensation issues.

Easy to install, starting at the bottom of your roof, simply roll out as a continuous layer over your rafters/joists horizontally, and staple into place.  The built in overlap system ensures you will always achieve the correct overlay between joins, meaning you just have to seal with our SuperFOIL tape to ensure an airtight finish. By following these methods to install your SuperFOIL products, you could see an increase in performance of up to 15% against traditional methods of insulation.

Wall Applications


Our breathable multifoil insulation range achieved a W1 waterproof rating, which means that it is suitable for both roofs and walls.  The ‘BB’ range is most commonly used to insulate walls externally as to allow any moisture build up inside the wall or studwork to escape. This also provides additional protection to your property in the form of a secondary rain barrier.

You could achieve an approximate U-value of 0.32 in you wall by using a single layer of SF19BB. By adding just 25mm of mineral wool between the studs would increase this to 0.28U, whilst still ensuring the wall was fully breathable.


Independently tested by 3rd party certified labs & notified bodies to comply with UK building regulations. SuperFOIL Insulation’s are suitable for use as part of construction to both UK & Eu standards such as CE.

Thermal performance testing has been undertaken by BBA ( British Board of Agrément) to BS EN ISO 12667, ISO 8301. BBA are an internationally accredited laboratory, certified to UKAS standards. We have also had our product range’s certified to comply with UK, EU & CE regulations by highly respected groups such as BBA, LABC, DIBT & ZAG. These 3rd party accreditation and approvals help to streamline building regulation applications to save you time & money.

All of our products are tested in the same way as all other insulation’s within the UK as set out in building regulations BR443 Part ‘L’ so that you can be sure you are comparing performance on a like for like basis. We believe multi foils also add additional performance not covered by standard testing through the benefits of increased air tightness which reduces heat loss through convention (such as draughts) and by providing a radiant barrier.

BBA Tested
Thermal Testing by BBA
labc_4890 Reg_RegDetails
BRE Global
Fire Testing by BRE