selluvillapohjaiset

Selluvillapohjaiset refers to materials and products that are based on selluvilla, the Finnish term for cellulose wool. Cellulose wool is a fibrous insulation material made primarily from recycled paper fibers that are processed, formed and treated to improve fire resistance. In practice the term covers loose-fill insulation that is blown into cavities as well as solid products such as boards or mats produced from cellulose fibers.

Manufacturing and treatment involve pulping recycled paper, refining it into fibers, and combining the fibers with binders. The fibers are then formed into the final product and treated with fire retardants, commonly borates, to meet safety requirements. Some formulations include insect deterrents and moisture-control agents. The aim is to create an insulation material with good thermal and acoustic performance while minimizing dust and handling hazards during installation.

Properties of selluvillapohjaiset materials include solid thermal insulation and notable sound absorption. They typically have a high recycled content and can offer lower embodied energy than some mineral-based insulations. Fire performance depends on the treatment and installation. The materials can be sensitive to moisture and may require proper sealing and vapor control to prevent mold growth; density and installation quality influence settling and long-term performance.

Applications are mainly in building construction, where cellulose-based insulation is used in attics, walls, and floors. It can be installed as loose-fill by blowing or poured methods, or as pre-formed boards or batt products used in retrofit or new construction. Proper installation, moisture management, and adherence to local building codes are important for achieving the intended performance.

See also: cellulose insulation, selluvilla, building insulation.