Indoor environment
The Challenge
Everyone has a right to healthy indoor air. We spend 90% of our time indoors. The buildings we live and work in therefore have a tremendous impact on the quality of our lives.
The indoor air quality is dependent on three factors:
- Location – the air outside
- Emissions from the building itself - materials, envelope performance (moulds and dampness)
- Human activities
Our contribution to performance
Rockfon cannot control the quality of the outside air, ensure the building is appropriately ventilated or maintained. What we can ensure is that our products will contribute positively to the indoor climate regardless of where they are installed.

No growth of micro-organisms
Excessive humidity and moisture in a building can promote the development of microorganisms such as mould or bacteria and cause allergic reactions, respiratory illness or skin problems. The inorganic nature and water repellency of the Rockfon stone wool core, ensures resistance to the growth of moulds, has no nutritional value and therefore provides no sustenance to harmful micro-organisms. TNO (www.tno.nl) has tested our products with respect to the most common types of bacteria and has concluded that stone wool does not favour their development.
Low emissions
All Rockfon products are classified as E1 products which guarantee that the products are below the lowest EU requirement for Formaldehyde emission.
A selective number of Rockfon products are certified class ISO 5 (tested by Céra Labo) meeting the requirement of demanding cleanrooms in regard to particle emissions.
A representative panel of Rockfon products are certified according to the strict Finnish Indoor Climate label, M1, and the Indoor Climate label thereby going beyond any legal requirements ensuring low emissions of particles and substances to the indoor environment.
Rockfon does not use photocatalysts. Though claiming to degrade air borne solvents and odours into non-toxic substances such as water and CO2, scientific studies have found the catalysts to form secondary emissions prove detrimental to human health. (WHO 1989, Wolkoff et al 1997).
Declassification of stone wool
All Rockfon stone wool is certified to be bio-soluble. Furthermore, the International Centre for Cancer Research has classified that Rockwool stone wool has no carcinogenic impact.
The chemical composition of the Rockwool fibres is certified through the European Certification Board (EUCEB).

