Loft Insulation


Foil Loft Insulation Installers

Foil loft insulation is quickly taking the world by storm.


NASA scientists first discovered the great insulating properties of foil when they started using it for their million-dollar space shuttles, but you don’t need to be an astronaut to feel the benefits of effective under-rafter foil insulation in your earthly abode. Aluminium foil has now become the standard insulation material for existing homes in several countries, most notably, Australia.

Here is a short list of the pros of foil loft insulation:

  • Clean and hygienic to install, with no mess
  • Regulates temperature throughout a home
  • Reflects rising heat
  • Moisture resistant 
  • Efficient and versatile
  • Very hygienic
  • Non-flammable
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How Does Multi-Foil Loft Insulation Work?

What makes foil insulation stand out from other insulative products is its ability to reflect up to 95% of radiated heat. In short, it can radiate rising heat back down. Once installed, it acts as a radiant barrier excellent at regulating the internal temperature of a building.

Another trait of foil insulation is that its heat reflection works in all directions: on hotter days, it can reflect solar radiation from the Sun away from your roofing area, keeping the temperature cool throughout your home.

SuperFOIL is the brand of multi-foil insulation that we specialise in handling. It is considered by customers across the globe to be one of the most flexible, versatile, and overall best foil insulation products available for lofts.

Perfect for Mid-20th Century Properties

We highly recommend SuperFOIL for mid-aged homes built from the 1920s to the 1960s, especially those in relatively warm parts of the UK such as East Anglia. The installation team at RJ Insulation are experienced in installing SuperFOIL insulation material, which requires an expert touch to handle safely due to its highly conductive properties. Although multi foil insulation cannot be installed on modern trussed roofs, it is perfect for properties built roughly within this 40+ year timeframe, which comprises a significant portion of all homes in the UK.

Learn More About the Mechanics of Radiant Barriers

Benefits of SuperFOIL Loft Insulation

Acting as a radiant barrier for your home’s roof area, foil loft insulation is a great investment, especially for newly-built properties. See below for some of the specific benefits of SuperFOIL insulation!

lifetime guarantee

Our Lifetime Insulation Guarantee

RJ Insulation’s eco-friendly and sustainable products all come with a lifetime guarantee. The lifetime is against the building itself, so as long as your home stands, your SupaSoft, SuperFOIL, or Sheeps Wool loft insulation will be covered by our guarantee. Additionally, we offer a warranty backed by insurance from the IWA for a period of 5 years.

Radiant Barriers Explained

If you’re still a little confused about radiant barrier insulation, don’t worry, you’re probably not alone! We have put together some diagrams that we hope will make the process clearer to understand.

As you can see, when a radiant barrier such as thermal foil loft insulation is placed around the upper levels of a building, it can protect against heat radiation emanating from the Sun. The building is protected from these solar rays, which are harmlessly bounced back or absorbed by the material.

Simultaneously, the radiant barrier install reflects up to 95% of heat and circulates it throughout the building. The interior of the loft, now completely airtight, maintains a steadily warm temperature as a result of this. Like all of our other sustainable insulation products, SuperFOIL allows for enough ventilation to prevent a home from overheating.

Certified Foil Insulation Roll Installers

You may be wondering if our service is truly trustworthy. To assuage any concerns, several

    • organisations have glowingly approved our service. RJ Insulation is a Which? Trusted Trader and Trading Standards Approved.

We were awarded a coveted PAS 2030:2019 accreditation for the installation of insulation, which also covers cross flow ventilation. Additionally, our installation team can conform to PAS 2035:2019 regulations when we are required to do so.

In short, you can trust us for your insulation installation needs. Our friendly team always encourage you to make the most informed decisions about your preferred insulation through our online questionnaire.

Full list of organisations that we are members of, or have been approved by:

  • Which?
  • PAS
  • Trading Standards 
  • British Assessment Bureau
  • Qualitymark Protection
  • IWA Deposit and Guarantee Protection
  • ECMK
  • Elmhurst Energy
  • AECB
  • The Retrofit Academy

Customer Testimonials

Both our previous customers and the accreditors at Which? have given us glowing feedback! We are very grateful to have been given so many well-earned 5-star reviews.

Contact RJ Insulation

Ready to book a consultation or start your insulation project? Fill in the contact form and a member of our team will get back to you straight away.

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    SuperFOIL Insulation Installation FAQs

    Studies have indicated that out of all metals, aluminium is of the highest interest to environmental scientists. This is due to its relatively low net negative impacts on biological ecosystems. The fact that aluminium is durable, versatile and recyclable makes it ideal for long-term human usage. 

    Beyond its immediate physical benefits, aluminium insulation can also work to help the environment once installed in your home. By effectively retaining heat in winter, this handy addition can reduce your reliance on heating – cutting carbon emissions across the board.

    By the physical laws of convection, heat always rises; when it reaches the ceiling layers, it is likely to escape straight through the roof if the loft is uninsulated. Aluminium insulation is designed to combat this issue – retaining heat where it’s most needed, whilst keeping temperatures stable and comfortable throughout summer. But how?

    In short, Aluminium foil insulation works as a thermal barrier (or a radiant barrier), meaning that it absorbs and reflects heat energy. When applied to a ceiling area, it can redirect heat coming from within and outside of the home – keeping the warmth produced by your heating systems in, and excess heat from the sun out.

    Multifoil is an exceptionally versatile insulating material, even outside of lofts. It can be applied to many areas of a house, including cavity walls, floorboards, window panes, and more. Further beyond that, it has even been used on NASA spacecraft, which is where foil’s insulating properties were first put to good use. 

    Per our company’s individual expertise, we primarily deal with SuperFOIL loft, conservatory, and storage room insulation installations. All of our team members are well-trained and experienced in dealing with these particular tasks. To discuss your specific insulation requirements, please get in touch with them over the phone, or using our simple contact form.

    How exactly your foil loft insulation is installed depends on your specific circumstances, including the type of space you’re looking to insulate. Generally, our installers will first check the suitability of the loft structure and make sure that your home does not have modern trussed roofing, as this is the one structure that is incompatible with SuperFOIL insulation. 

    After suitability is confirmed, the foil cladding will be carefully laid down between the loft joists. If you have a storage conversion in mind, we can also board the material up for added protection.

    The reasoning boils down to issues of cost and practicality. As SuperFOIL comes in rolls, it can be easily applied to a single, expansive space, such as an average mid-20th century loft. Since modern roofs have trussed lofts, getting the material around those barricades will require some creative cutting and rejigging which can take far longer than necessary and also up the costs exponentially. In the majority of cases, it simply isn’t worth getting a modern trussed roof insulated with foil when more cost effective options are available, namely SupaSoft Recycled Plastic.

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    Other Eco-Friendly Loft Insulation Products

    SupaSoft Recycled Plastic

    Made entirely from single-use plastic bottles, recycled plastic loft insulation is yet another eco-friendly material that is growing in popularity by the day. Recycled plastic insulation is so soft and smooth that you might mistake it for natural sheep wool from a distance!

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    Sheep Wool

    Just as soft and hygienic as recycled plastic, Thermafleece sheep wool loft insulation has its own niche as a product best suited for much older properties. If your house was built before 1920, click below!

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