Thermal Performance

Combining a good thermal resistance value with exceptional airtightness, cellulose insulation makes a great thermal insulator.

Cellulose insulation has an R-value (thermal resistance) comparable with alternatives such as fibreglass, rockwool, and expanded polystyrene. However, its blown installation method means cellulose insulation tightly packs every corner of a void. This provides superior airtightness when compared to to most other types of insulation. Alternatives are manufactured in rolls, boards, or batts that are practically impossible to fit tightly in awkward spaces. Even tiny gaps leak heat.

Cellulose vs Fibreglass Insulation

In practice, the performance of cellulose insulation significantly exceeds that of fibreglass. Separate studies by the University of Colorado and Wimpey Homes show that cellulose reduces energy costs by around 25%.

I was sitting at my desk as the insulation went in. I had been struggling to get the temperature in that room above 16°C with the radiator on full. During the course of that day I watched in amazement as my thermometer rose. In the weeks that followed the room retained its heat and I was able to turn the radiator down by two settings and still be very warm.

Helen Taylor

Over Bed & Breakfast