What is our cellulose-fibre insulation made of?
- Tom Collings
- Apr 21
- 1 min read
Updated: Apr 24

Our sustainable, safe, and smart cellulose-fibre insulation is made from recycled newspaper.
Newspaper itself is produced from the fibres of trees such as pine, spruce, and fir. These also happen to be the commonest timber species historically used for floor joists, floorboards, doors, doorframes, skirting, furniture, etc.
The cellulose-fibre, from newspaper, has inorganic salts added, including magnesium sulphate and boric acid. This is to make it highly resistant to fire, rodents and mould.
Magnesium sulphate, commonly known as Epsom salts, has many non-prescription uses including relief of constipation and as a soaking solution for minor sprains, bruises, muscle aches, joint stiffness, and tired feet.
Boric acid is generally produced from borate minerals which are mined in various parts of the world, but is also found in soil, water, and plants. Plants need boron, a major component of boric acid, to grow, and it is considered to be non-toxic. It has been used since the time of Ancient Greece for a number of benefits, and is found in many modern products including household cleaners and personal care.
The result is a safe, sustainable, and high-performing insulation solution that protects both buildings and the people who live in them.
To find out more, and discuss your project, contact our expert team today.