They also provide thermal comfort when walking on tufted rugs with bare feet, and larger pieces provide insulation which may reduce the cost of heating. Rugs or wall hangings made from wool fibres have been shown to improve air quality in indoor spaces. Wool acts as a filter through which contaminants such as sulphur dioxide and nitrogen are absorbed.
Thermal comfort is provided by walking on tufted rugs with bare feet, and larger pieces of these rugs can offer insulation that might reduce heating costs. Rugs or wall hangings made from wool fibres have been shown to improve indoor air quality. Wool acts as a filter absorbing contaminants like sulphur dioxide and nitrogen.