kivivill

Kivivill, the Finnish term for rock wool, is a mineral insulation material derived from natural rocks such as basalt. The rocks are melted at high temperature, fibers are spun, and the fibers are formed into batts, boards, or loose-fill products. It is widely used for building and industrial insulation to improve energy efficiency and fire performance.

Production yields non-combustible mineral fibers with high fire resistance. The fibrous material provides thermal insulation, acoustic damping, and dimensional stability across a wide temperature range. Depending on product type, kivivill can be moisture resistant and permits some degree of vapor diffusion, affecting how it is integrated with moisture-control layers.

Typical applications include insulation of roofs, walls, floors, and mechanical systems, as well as pipe and ductwork. In exterior wall assemblies and roof constructions, kivivill is used to improve energy efficiency and fire safety.

Safety and environmental aspects: mineral wool products are generally inert and non-toxic, but handling fibers during installation can irritate skin, eyes, or lungs; protective equipment is advised. Some binders are formaldehyde-free. End-of-life options include recycling or energy recovery where facilities exist, with disposal governed by local regulations.

Kivivill is widely used in Nordic and European construction and competes with other mineral wools, such as glass wool, offering a balance of insulation value, fire resistance, and ease of installation.