What is cellulose insulation? It's green but is it any good?

cellulose insulation installation
(Image credit: Thermofloc)

Do you know what cellulose insulation is and how it works? If not, our guide is here to give you everything you need to know in order to decide whether this is the right option for you.

We sort of know instinctively that paper is a good insulator but the idea of using it as a home insulation would probably seem unusual to most of us. Cellulose insulation is essentially shredded paper and has been used to keep homes insulated since the 1950s in the US (and 1970s in the UK). 

Tim Pullen
Tim Pullen

Tim Pullen is an expert in sustainable building methods and home energy efficiency. 

Tim Pullen

Tim is an expert in sustainable building methods and energy efficiency in residential homes and writes on the subject for magazines and national newspapers. He is the author of The Sustainable Building Bible, Simply Sustainable Homes and Anaerobic Digestion - Making Biogas - Making Energy: The Earthscan Expert Guide.

His interest in renewable energy and sustainability was first inspired by visits to the Royal Festival Hall heat pump and the Edmonton heat-from-waste projects. In 1979

this initial burst of enthusiasm lead to him trying (and failing) to build a biogas digester to convert pig manure into fuel, at a Kent oast-house, his first conversion project.

Moving in 2002 to a small-holding in South Wales, providing as it did access to a wider range of natural resources, fanned his enthusiasm for sustainability. He went on to install renewable technology at the property, including biomass boiler and wind turbine.

He formally ran energy efficiency consultancy WeatherWorks and was a speaker and expert at the Homebuilding & Renovating Shows across the country.