Our stone wool insulation can withstand temperatures above 1000°C helping to stop the spread of a building fire.
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Our stone wool insulation can last for at least 65 years with no degradation in quality or performance. 1
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Over the lifetime of its use, the building insulation ROCKWOOL sold in 2025 will save almost 100 times the energy used in its production. 2
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Fire-safety: stone wool is non-combustible

Stone wool is non-combustible, fire protection is built into the material itself, not dependent on chemical flame retardants.  Stone wool withstands temperatures exceeding 1000 degrees Celsius, it’s durable, and has been found to retain its fire performance for at least 65 years.1

ROCKWOOL’s technical and building insulation products achieve the top fire performance Euroclass Reaction to Fire Classification, either A1or A2-s1, d0​.

A red fire truck speeds through central London at night, blue emergency lights glowing. Classic tall buildings line the streets while blurred motion from panning highlights the silhouette of firefight

Durability: ROCKWOOL building insulation is built to last

ROCKWOOL stone wool is highly durable and long-lasting. Our 2023 testing of 65-year-old insulation recovered from Copenhagen airport proved that stone wool retains its thermal, fire, and acoustic performance over decades—meaning sustained energy savings and comfort with minimal maintenance.*

Skuta Alpine Shelter, Durability

ROCKWOOL building insulation generates energy savings

ROCKWOOL building insulation sold in 2025 is expected to save almost 100 times the energy used to produce it.​​​2

ROCKWOOL building insulation sold in 2025 is expected to save 495 TWh of energy over ​its lifetime – close to the equivalent to the 2025 electricity consumption of France, population of 68M.​2

Paris and the Eiffel tower at sunset

Annual & Sustainability Report

ROCKWOOL has a critical role to play in the renovation wave and we are ready to act.

Discover how our Group Sustainability Statement provides a holistic view of how ROCKWOOL's products can support communities and increase our positive impact through new initiatives while reducing our negative environmental impact.

One Ocean Foundation

In 2022, ROCKWOOL has joined forces with One Ocean Foundation in a multi-year global scientific partnership focused on accelerating solutions to protect and regenerate our ocean.

ROCKWOOL Denmark SailGP team collaborates with One Ocean Foundation with the objective to analyse, track and reduce the carbon and plastic footprint of team operations as part of SailGP’s Impact League initiative.

One Ocean Foundation, Sustainability

Circular Economy

Supported by Circle Economy Consulting, ROCKWOOL has developed a set of circularity KPIs to not only support disclosure in relation to CSRD and the EU Taxonomy, but also to help drive the transition along every step of the value chain. Circle Economy Consulting has developed an indicator dashboard for ROCKWOOL to measure its efforts against applying to different steps of the value chain: Circular materials, Circular use and Circular end-of-life.

Circle Economy Consulting

Learn more about ROCKWOOL's commitments