Does Thermal Performance Change With Different Brands of Cellulose?

Cellulose Insulation Variations

Cellulose insulation is made from recycled paper products, such as newspaper and cardboard, which are processed into a fluffy, loose-fill material. The key to high thermal performance lies in the processing and densification of the cellulose. Brand variations can lead to differences in moisture content, which affects thermal resistance. A 1% increase in moisture content can reduce thermal resistance by up to 3%.

Comparison to Other Natural Insulation Materials

Compared to other natural insulation materials, cellulose has a moderate thermal performance. For example, sheep wool insulation can achieve R-values of up to R-4.5 per inch, while hemp insulation can achieve R-values of up to R-3.5 per inch. Cellulose, on the other hand, typically achieves R-values of up to R-3.8 per inch.

Importance of Density and Moisture Control

To achieve optimal thermal performance, cellulose insulation requires precise control over density and moisture content. A density of 3-4 pounds per cubic foot is generally recommended, while a moisture content of 6-8% is ideal. To achieve these conditions, some manufacturers use specialized equipment, such as high-velocity blowers and precision dryers, to process and dry the cellulose.