Loft Insulation

Sheep Wool

Sheep Wool Loft

Insulation Installers

Woven to last a lifetime, lambswool is moisture absorbent, hygienic to install, and locally sourced from British farms.

Sheep Wool

Many sectors have high demand for sustainable alternative products to the standard offerings, ours being no exception. We are all becoming more aware of our impact on the planet, so we aim to provide the most eco-friendly products available. Sheep Wool stands out as being made entirely of organic material, while also having a number of unique consumer benefits for good measure.

If your property was built before 1920, chances are high that sheep wool insulation will be best suited to it. Feel free to contact our sheep wool loft insulation installers today to find out more.

  • Hygroscopic (able to absorb moisture)
  • 100% organic (with minor chemical disinfectants applied)
  • Lasts a lifetime
  • Safe to handle
  • Ideal for older properties
  • Locally sourced from British sheep
  • Non-flammable
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Can Sheep Wool Really Insulate a Loft?

Thanks to the naturally crimped structure of their woolly coat, sheep have long been able to casually withstand freezing temperatures in the wild. We hope to bring this natural insulation matter into your home so that you can feel the same benefits! The sheep wool insulation product we use – simply branded as ‘Sheep Wool’ – is made to last a lifetime or longer and is durable enough to withstand the effects of natural degradation. Despite being biological material, it does not attract vermin, nor does it burn when overheated. 

Around nine million homes, roughly a third of the 26 million total in the UK, were built before 1920, many of which certainly suffer from inadequate insulation. Older properties, particularly ones ancient enough to be listed by organisations like the National Trust, are simply not built for modern insulation products – so a “one size fits all” approach cannot be applied to them when they all have unique needs to be met.

Perfect for Older, Timber Framed Houses

Sheep wool is versatile enough to be fitted inside homes that completely lack modern infrastructure like treated timber framing, trussed roofing, and central heating systems. Our installers fit the wool cladding between the joists and cavities, with ventilation points wherever necessary. Of course, newer properties can also be fitted with natural wool loft insulation, depending on how they are structured. Call us today and we can assess the suitability of your property for this type of organic insulation!

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Benefits of Organic Lamb Wool Loft Insulation

Going organic with your loft insulation has many benefits! We glowingly endorse it for older homes. Keep reading to learn about the hygroscopic traits of sheep wool and much more.

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 insulation will be covered by our guarantee. Additionally, we offer a warranty backed by insurance from the IWA for a period of 5 years.

Sheep Wool Insulation Explained

As you can see in this close-up diagram, lambswool has an unusual structure for an organic fibre. Partly due to its high protein content, the wool fleece has thousands of tiny folds full of air, which creates a thick layer of insulation. With a large amount of air trapped cushioned within these pockets, it becomes more difficult for heat to diffuse across the wool. These air bubbles are also the reason why wool is excellent at protecting against damage from both water and fire.

Accredited Sheep Wool Insulation 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 hold 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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    Sheep Wool Insulation Installation FAQs

    Sheep wool loft insulation can last for 60 years. When kept in decent condition, it can last even longer. This lifetime guarantee of sheep wool makes it very appealing, especially for owners of trust-protected properties, as it’s one less piece of expensive maintenance to worry about. On top of that, sheep wool is extremely durable, being resistant to water, fire and vermin, so it’s unlikely to sustain damage for the whole duration of its installation in your attic. 

    To start your sheep wool insulation installation journey, contact our team of experts today. We’ll happily evaluate your historic property’s unique needs.

    Many thousands of years ago, humans first noticed the insulating properties of sheep wool and refined it through selective breeding to produce the finest woollen textiles for our own use. Before they were domesticated for wool, wild sheep were originally more hairy than woolly – now, they produce so much that they need regular shearing at all times of the year to prevent them from overheating. 

    As homes have gradually grown harder to maintain, it is only natural that we have turned back to the humble sheep to provide warmth for them. The company that provides the sheep wool insulation we use – aptly named Sheep Wool Insulation Ltd. – was formed in 2002 and patented their titular product at the same time.

    Yes, of course; sheep wool is one of the great natural insulators, used by humans for millennia. On top of insulating sheep from cold weather out in the fields, we have been using it for our clothes, our fabrics and more because we recognise how great it is at keeping us warm as well. 

    But what makes sheep wool such a great insulator? Its secret lies in its crimped texture. This unique element fills wool fibre with thousands of tiny air pockets – significantly slowing the transfer of heat. On top of this, this natural material is excellent at absorbing water –  fighting condensation and dampness without losing any of its other beneficial properties.

    All sheep wool insulation starts its journey in nature. First, the wool is harvested from local British sheep. The expertly selected wool is then packaged into bales, each labelled to describe the colour, texture, the breed of sheep it came from, etc., before being sent for processing. 

    Once the bales arrive in the Sheep Wool Insulated factory, the wool is sorted, blended, cleaned, and eventually woven into thin layers of textile fabric. These thin fabric sheets are carefully stacked on top of each other to create a thick layer of insulating fibre, before being packaged and sent to loft-owners across the nation.

    The thickness of wool insulation might make it appear difficult to shape, but cutting it is actually quite straightforward. Almost any sharp implement should work since sheep wool is soft enough to be safely torn apart barehanded, though we highly recommend a scallop-edged knife or a purpose-built insulation saw for a more accurate cut. The ideal method of cutting insulation is to first roll it up as tightly as possible, which produces a cleaner cut in a fraction of the time.

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    Other Eco-Friendly Loft Insulation Products We Use

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    For properties built after the 1920s, foil is the next step in the evolution of thermal loft insulation! Foil has additional heat reflective properties that make it ideal for regulating temperature inside a home during hotter days.

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    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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