A by-product of sheep farming often regarded as waste, sheep's wool is in fact one of nature's most technologically advanced materials. In construction, it offers thermo-hygrometric performance that no synthetic polymer can match.
Unlike other inert insulators, sheep's wool is chemically active. The fibres are composed of keratin, an amino-acid protein capable of reacting with formaldehyde molecules and other VOCs present in building air. Through a chemisorption process, the wool captures these toxic substances irreversibly, turning the insulation into a true permanent air filter.
Sheep's wool possesses a unique thermodynamic behaviour called heat of sorption. When ambient humidity rises, the fibre absorbs water vapour, releasing energy in the form of heat. Conversely, when the air becomes dry, it releases moisture, cooling the environment and actively preventing the formation of surface condensation.
Standards
European and international references applicable.
Physical properties
Usage environment
To prevent moth and insect attack, sheep wool fibres are treated with boron salts or permanent moth-proofing agents. These are non-toxic mineral treatments that do not alter the breathability or chemical reactivity of the keratin.