• 3 IN 1 DESIGN

    Provides a Foil Insulation, Breather Membrane & Radiant Barrier

  • SuperFOIL can achieve any U-value

    Whether Used on it's Own or in Combination with Other Insulation Types

  • Easy To Install

    No Specialist Tools Required


    Made From 40% Recycled Materials


    Ideal for New Build & Retrofit - Roofs, Walls & Floors

Protect Your Project With Our Breathable Insulation

Here at SuperFOIL, we produce the UK’s highest performing, breathable, multifoil insulation.

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, providing 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, but you are also protecting your home from condensation and keeping your house at a comfortable temperature, whatever the weather!

By using our range of breathable 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.

Herefordshire Housing Upgrade

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 for roof applications or wall insulations.

SuperFOIL is easy to install and requires no specialist tools for fitting. Due to its efficient 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!

Save Yourself Time and Money by choosing the right insulation for the job!



  • 0.29 R VALUE

    R Value of 0.29 When used in a roof

  • 1mm THICK

    1.5m Wide by 25/50m Long

SuperFOIL SF19BB Roll


  • 2.22 R VALUE

    R Value of 2.22 When used in a roof

  • 40mm THICK

    1.2/1.5m Wide by 10m Long

SF40BB Roll Laid Down


  • 3.67 R VALUE

    R Value of 3.67 When used in a roof

  • 75mm THICK

    1.5m Wide by 10m Long

Technical Information

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
Emittance0.190.19 / 0.030.19 / 0.03
Reaction To Fire (Euroclass)Class D (Behind Plasterboard)Class E (Behind Plasterboard)Class E (Behind Plasterboard)
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
Reflective Coated Breather Membrane111
Perforated Aluminium Coated Reflective Foil PET-38
Perforated Reinforced Heavy Outer Reflective Foil-11
Loft Quilt 80g/sqm Layers-49
Total Layers1919


Roof (1)
Wall (1)


Multiple House Roofs Of Different Colours

Do you have a roofing project to complete? No problem! Our Breathable multifoil insulation can be used in virtually any roofing project whether new build or retrofit.

Ideal for external use, providing both insulation and a breathable membrane in a single product.

The SuperFOIL breathable range is the perfect solution for those troublesome, retrofit projects. Our BB 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, the range 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 product, knowing that it 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.


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.

Cool Architecture White Building
Certified By:

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.


Our FREE guide gives you all the information on saving time and money when insulating your home, and how to really make a difference to the comfort of your rooms.

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SuperFOIL Insulation Guide