How does the carbon footprint of concrete outdoor armchairs compare to natural stone?

The carbon footprint of outdoor furniture materials is a growing concern for environmentally conscious consumers. Concrete outdoor armchairs and natural stone furniture are both popular choices, but their environmental impacts differ significantly.

Concrete production is highly energy-intensive, contributing to substantial CO2 emissions due to cement manufacturing. On average, concrete emits approximately 0.93 kg of CO2 per kg of material. Additionally, transportation weight adds to its carbon footprint.

Natural stone, such as granite or limestone, has a lower carbon footprint during extraction and processing, emitting roughly 0.04–0.08 kg of CO2 per kg. However, quarrying practices and long-distance shipping can offset some benefits.

For sustainability, locally sourced natural stone often outperforms concrete. However, recycled concrete or low-carbon alternatives can reduce environmental harm. Choosing durable, long-lasting designs also minimizes overall impact.

Ultimately, both materials have trade-offs, but natural stone generally has a lower carbon footprint when sourced responsibly.