Impact Investing - Rockwool

3 min read 13 May 21

When transforming volcanic rock into stone wool creates safe and sustainable products that help communities thrive

Rockwool is focused on energy efficiency as the key to achieving the Paris climate goals

With 83 years of experience in stone wool production, Rockwool has become one of the largest producers and manufacturers of insulation provision in the world. The company creates sustainable solutions to protect life, assets and the environment by helping buildings become more resilient to changing climate risks.

Its main product, stone wool, is made up of fibrous material that is formed by spinning or drawing molten mineral or rock materials. Stone wool is a versatile, neutral material with multiple benefits that make it ideal for application in buildings, industry, transportation and horticulture. Its impact on thermal insulation is immense, as this type of insulation is able to reduce heating needs by an estimated 70%, which can lead to a significant carbon saving. Rockwool’s building insulation can, through its lifetime, avoid emissions that equate to taking more than 50 million cars off the road. In 2019, Rockwool insulation saved 201 million tonnes of CO₂, which is equivalent to 43,000 wind turbines running for a year.

The fire-resistant properties of stone wool also mean it can withstand temperatures of more than 1,000 degrees Celsius, helping to protect the inhabitants of buildings that are insulated with the material. Rockwool’s range of products, offered through its five distinct divisions, help to tackle other sustainability challenges as well, including noise pollution, water scarcity and soil degradation. This includes a crop-specific range of substrate slabs for vegetable growing, allowing precision growth and higher crop yields; versatile stone wool-based products for water management; and acoustic ceiling systems for soundproofing. 

In brief:

  • United Nations Sustainable Development Primary Goal #11: Sustainable cities and communities.
  • Nationality: Danish
  • 201 million tonnes of CO₂ saved in 2019
  • Ambition is ‘to empower everyone to rise to the development challenges of modern living’
  • Estimated energy saved over the lifetime of a building with its insulation will be 100x greater than the energy used to produce that insulation
  • Proper insulation alone can reduce heating needs by 70%

While we support the UN SDGs, we are not associated with the UN and our funds are not endorsed by them.

All company data sourced from Rockwool. Figures shown were latest available from company literature, as at January 2021.

M&G (Lux) Positive Impact Fund invests in Rockwool.

If you want to know more about M&G (Lux) Positive Impact Fund please visit the fund page.

The value of investments will fluctuate, which will cause prices to fall as well as rise and you may not get back the original amount you invested. Past performance is not a guide to future performance.

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