Sheepwool Insulation for Indoor Air Quality

Isolena Sheepwool Insulation for Cleaner Indoor Air

When planning internal retrofit works, one of the most important (but sometimes overlooked) factors to consider is indoor air quality and how the materials we choose can affect it. It may sound surprising to hear this, but some research indicates that indoor air may often contain higher and more variable levels of pollutants than outdoor air, particularly in modern, well-sealed buildings that limit natural ventilation and often contain materials that can contribute to poor air quality.

Common sources of indoor pollutants include everyday materials such as paints, furniture, adhesives and common insulation products, which can emit volatile organic compounds (VOCs) and formaldehyde into the air. Moisture and carbon dioxide (CO₂) levels also play a role in overall air quality. Prolonged exposure to poor air can contribute to headaches, fatigue, respiratory problems and other health issues.

That is why the materials we choose matter more than ever. At Unity Lime, we believe in creating buildings that not only perform well but also contribute to a healthier indoor environment. None of the insulation products we sell contribute to poor air quality, our staple product wood fibre insulation for example omits no VOC’s into the home, unlike many ‘commonly used’ insulation materials. But we do have an insulation product that actively removes potentially harmful chemicals from the air! Isolena Sheepwool Insulation. 

How does Isolena Sheepwool Insulation Purify the Air?

Sheepwool Insulation is a 100% natural product containing no chemical binders or additives. Its natural protein, keratin, gives the wool the ability to absorb and neutralise harmful substances such as formaldehyde and VOCs, improving air quality within a short time. It is also hygroscopic, meaning it can absorb up to a third of its own weight in moisture without losing its insulating performance. This helps to regulate indoor humidity and prevent the growth of mould.

Are there other products that help Purify the Air in my Home? 

Another great product we can supply is Fibrolith Pure Genius. These wood wool panels combine acoustic comfort with active air purification. Their photocatalytic coating, activated by light, helps break down airborne pollutants such as VOCs, supporting cleaner indoor air alongside excellent sound absorption.

Whether you are building, renovating or specifying materials – prioritising indoor air quality should not be seen as a bonus but as an essential part of sustainable construction.

At Unity Lime, we are committed to helping create healthier, more comfortable indoor environments using natural, low-VOC materials.
If you would like to learn more about these products or discuss your project, please get in touch – our technical team will be happy to help.