Sheep’s wool fiber

the natural moisture storage


Sheep’s wool looks back on a long history of technical utilization, and it is known that humas have used it for about 35 000 years. In the course of evolution an excellent insulation material has been formed. In addition to the insulating characteristics, especially the hygroscopic properties of wool are to be emphasized.

Sheep’s wool is one of the most hydrophilic natural fibers.


Sheep’s wool is one of the most hygroscopic (water attracting) natural fibers, although its surface has hydrophobic (water-repellent) properties. Sheep’s wool can absorb uot o 33% of its own weight in moisture, bind it inside the fibers and rerelease it whenever needed. The insulating ability of sheep’s wool remains even in moist condition – thanks to high air lock in the wool ifbres.

Through this characteristic sheep’s wool does not mold and has a balancing effect on room humidity and room temperature. Sheep’s wool is a natural moisture storage and balances the humidity in living areas optimally, especially in winter.

In addition, because of these features a water vapour permeable insulating material can be manufactured, which is important for a healthy indoor climate.

Sheep’s wool neutralizes air pollutants

Formaldehyde as a very reactive molecule is able to respond to the amino acids of sheep’s wool. Stable and harmless compounds are formed that lead to irreversible crosslinks between the peptide chains of the sheep’s wool fibers. Formaldehyde, which is found in paints, varnishes, adhesives, glues, binders, hot fat and disinfectants, is not only stored but also permanently bound and therefore neutralized! Because of this, sheep’s wool is ideal for the remediation of buildings burdened with air pollutants.