The Retrovive system isn't just another insulation material — it's a smarter, greener, and longer-lasting solution that keeps homes warmer and the planet cooler.

Cellulose-fibre insulation: from mid-19th century to modern-day Passivhaus standards. Using plant fibres as insulation has a long history, but the industrial process of recycling newspaper to make cellulose insulation goes back to the 1950s.

We exclusively use cellulose-fibre material as it is completely safe, environmentally sustainable and extremely high-performance. The best all-round performing insulation for the purpose.

Our cellulose-fibre insulation material deters mice. The Agricultural Development and Advisory Service conducted a study to establish the repellence to mice of Warmcel cellulose-fibre insulation treated with the salts. The clear conclusion was that it was almost totally repellent.

Our sustainable, safe, and smart cellulose-fibre insulation is made from recycled newspaper