Material of the Month – November – Compressed Sheepswool Insulation

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Why Compressed Sheepswool inspires us:

With the days fast becoming shorter and the cold Autumnal air making a statement it’s time to pack the type of insulation you might see on a man called Del in Peckham… You will have to pay VAT on this, which is well worth it considering the unique advantage of sheepswool over man made insulation products. It is breathable and it can absorb (up to 33% of its weight without compromising its insulating ability) and release moisture from the surrounding air.

Why we like Compressed Sheepswool :

Compressed sheepswool insulation also has the ability to absorb and neutralise harmful substances. The wool is a natural protein made up of a 18 different amino acid chains. 60% of these have a reactive side chain, which allow the reactive areas of the wool to absorb harmful and odorous substances such as Nitrogen Dioxide, Sulphur Dioxide and Formaldehyde!

Thermafleece EcoRoll’s convenient compressed form reduces transport impacts by more than 50% compared withother natural insulations. Once unpacked, it regains its original thickness to provide excellent thermal and acoustic insulation. It is long lasting, safe to handle. This specific product has a breakdown of 75% wool blend, 15% recycled polyester and 10% polyester binder. If maintained correctly it should last upwards of 50 years.

Two case studies available to download, which feature sheepswool insulation are Cultybraggan Hut One and Brockloch Bothy

Do you have a material in mind to suggest for December? If so email us at or we might end up with miles and miles of carpet tiles…

Case Study 35 – Cultybraggan Hut One

Originally conceived as a temporary building, this WW2 Nissen hut has been secured for another generation using innovative construction materials.

Case Study 36 – Brockloch Bothy

This off-grid modular holiday home features a Cross Laminated Timber structure kept cosy with Sheep’s Wool insulation.

Materials Library Online Resource

A new online sustainable materials resource for construction professionals, architects, builders and home owners has been launched.

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