Slate cladding installed with hook systems is compared to painted wooden cladding (Norway), Porcellanato (Italy), and composite panels (Norway).

Result:
Light Oppdal natural slate has significantly lower greenhouse gas emissions than Porcellanato, with a reduction of approx. 9,000 kg CO₂-eq for a 200 m² façade. Offerdal slate also has lower emissions than Steni and wooden cladding under the same conditions.

Electricity for one house for four years

Specifying Light Oppdal Natural slate instead of Porcellanato from Italy for a 200 m² façade reduces emissions equivalent to the electricity consumption for heating a typical Norwegian detached house (150 m²) for nearly four years.

Slate tiles from Offerdal and Oppdal are compared to Norwegian granite (processed in Europe), Spanish marble, and parquet and laminate from Central Europe.

Result:
Offerdal slate provides 7,000 kg CO₂-eq lower emissions than laminate for 200 m² of flooring. Low carbon footprint and long lifespan make slate a competitive flooring material in terms of environmental performance.

Three years of driving

Choosing Offerdal slate instead of laminate from Central Europe for 200 m² of indoor flooring reduces emissions equivalent to three years of daily car use (15,000 km per year) with an average petrol car.

For paving, slate is compared to concrete slabs, eco-asphalt, Portuguese granite, and Norwegian granite processed in Europe. Material thickness is adjusted for technical performance (e.g. flexural strength).

Resultat:
Using Offerdal slate results in 26,720 kg CO₂-eq lower emissions than Norwegian granite processed in Europe for an area of 200 m². Granite’s need for greater thickness and higher process energy contributes to the significant emission difference.

213 round-trip flights

Covering a 200 m² outdoor area with Norwegian granite processed in Europe instead of Offerdal Natural slate increases CO₂ emissions by 26,720 kg – equivalent to the emissions from 213 round-trip flights between Oslo and Trondheim.