celluloseeristeet

Cellulose insulation, known in Finnish as celluloseeristeet, is a type of thermal insulation material made primarily from recycled paper products, such as newspapers and cardboard. These paper fibers are treated with fire retardants, typically borates, to enhance their safety and resistance to pests and mold. Cellulose insulation is commonly used in buildings for walls, attics, and floors to reduce heat transfer and improve energy efficiency.

The manufacturing process involves shredding the paper waste and then mixing it with the fire-retardant chemicals. The resulting material can be installed in several ways. One common method is loose-fill application, where the material is blown into cavities using specialized equipment. This method is particularly effective for filling irregular spaces and existing structures. Another form is dense-pack insulation, where the cellulose is blown into wall cavities at a higher density, providing improved structural support and air sealing. It can also be manufactured into batts or panels, although blowing is the most prevalent installation technique.

Cellulose insulation is recognized for its environmental benefits, primarily due to its high recycled content and low embodied energy compared to some other insulation materials. Its effectiveness in reducing energy consumption for heating and cooling contributes to a lower carbon footprint for buildings. Furthermore, its ability to create a relatively airtight barrier helps to prevent air leakage, which is a significant factor in building energy performance. The material's thermal resistance, or R-value, is comparable to other common insulation types, making it a viable option for a wide range of construction projects.