Natural does not automatically mean low-impact. That is why life-cycle assessment matters: it looks beyond the raw material and considers cultivation, manufacturing, transport and end-of-life.
1. What the 2026 study assessed
Researchers evaluated 1 kg of woven coir geotextile at 700 g/m² using a cradle-to-grave life-cycle assessment across 18 environmental impact categories, with primary manufacturing data and established life-cycle inventory datasets.
2. The headline result
The study reported that coir geotextiles had approximately 34%–40% lower global-warming impact than synthetic geotextile comparators. It also reported lower toxicity burdens in the assessed scenarios.
Important: this is a result from a specific LCA model and product configuration. It should not be treated as a universal claim for every coir geotextile, factory, country or project.
3. Manufacturing electricity is a major hotspot
The manufacturing phase — especially weaving — dominated the assessed global-warming impact. The study attributed about 75% of the coir product’s global-warming burden to manufacturing, largely because of fossil-based electricity.
4. Renewable energy can materially change the footprint
Scenario modelling showed that replacing conventional electricity with renewable sources could reduce several environmental impacts by roughly 10%–50%, depending on the energy source and category assessed.
5. Country of origin also matters
The study compared major coconut-producing countries and found different environmental profiles. Indonesia showed higher impacts in some categories linked to cultivation assumptions, India was more influenced by manufacturing energy, and the Philippines benefited from a more renewable electricity mix in the model.
6. What this means for infrastructure buyers
Buyers should avoid treating “natural fibre” as a complete sustainability specification. Useful questions include fibre source, product mass per square metre, weaving method, energy source, expected service life, installation method, transport distance and end-of-life scenario.
7. Sustainability does not replace engineering suitability
A lower environmental footprint does not automatically make a coir product suitable for every road, slope, shoreline or drainage application. Mechanical strength, opening size, durability, hydraulic behaviour and project design life still need engineering review.
Sources & further reading
This is original CTN editorial analysis. Research findings are presented in context and should not be treated as universal product-performance guarantees.
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