The German Natural Stone Association (DNV) publishes the first results of its study on floor coverings. Natural stone is more environmentally friendly than carpet, laminate and the like. Every year, over 350 million square meters of flooring are laid in Germany alone – with natural stone accounting for only around 12 million square meters. At the same time, the construction industry is one of the biggest CO2 producers alongside the fashion and food industries. Accordingly […]
The German Natural Stone Association (DNV) publishes the first results of its study on floor coverings. Natural stone is more environmentally friendly than carpet, laminate and co.
In Germany alone, over 350 million square meters of flooring are laid every year – with natural stone accounting for only around 12 million square meters. At the same time, the construction industry is one of the biggest CO2 producers alongside the fashion and food industries. Accordingly, efforts to make building products sustainable in their manufacture, use and subsequent disposal are important. The German Natural Stone Association has therefore commissioned a life cycle assessment study from the Institute for Materials in Construction at the University of Stuttgart. It compares the ecological and economic impact of different floor coverings from the production phase to the use phase.
The study evaluates natural stone tiles, ceramic tiles, laminate, parquet, carpet and PVC on a standard floor substructure for high-traffic commercial areas in terms of their ecological impact and cost-effectiveness over a period of 50 years. The production and use phases as well as the impact categories of global warming potential, acidification potential, eutrophication potential, ozone layer destruction potential, ozone formation potential and primary energy demand are taken into account. The data basis for the comparison of the different materials are certified environmental product declarations.
In the impact category Global Warming Potential ( GWP ), the production and use of stone floor coverings results in significantly lower CO2 equivalents than other covering materials, according to the evaluation.Natural stone tiles, including the associated adhesive mortar, have the lowest emissions at 10.9 kilograms of CO2 equivalent – the global warming potential of carpet is more than twenty times higher in comparison with a value of around 223 kilograms of CO2 equivalent.
Carpet, PVC and laminate have a particularly high global warming potential
The comparison of all floor coverings shows that hard coverings made of natural stone and ceramic are more environmentally friendly than carpet, PVC, laminate and parquet – also in terms of their primary energy requirements.
In a further section, the study compares the usual floor coverings made of natural stone and cast stone for areas with the highest levels of traffic, such as shopping centers, train stations and airports.
The result: the natural stone slabs have lower equivalent values in all impact categories. The global warming potential of a natural stone slab is around 27 percent lower than that of a concrete slab. An analysis of the life cycle costs, which are largely dependent on the level of cleaning costs, is also included in the life cycle assessment study.
The detailed life cycle assessment study for floor coverings will be available from DNV shortly. Managing Director Reiner Krug will also be presenting the initial results at Stone+tec.
Lecture: Presentation of the new sustainability study on floor coverings
June 15, 2018, 2:00 to 2:30 p.m.
Expert forum, Hall 9, Stand 9-514












