Ecococon: Product Winner - Exemplar Sustainable Buildings Awards

EcoCocon’s innovative straw wall system locks away more carbon than it emits per square metre. Made from renewable timber and straw, the prefabricated panels combine excellent thermal performance with natural vapour permeability and impressive carbon storage — all in a system that’s quick to build, circular by design, and backed by Cradle to Cradle certification.

What sets EcoCocon apart is its rare blend of natural, bio-based materials and precision engineering. At 98% plant-based, it’s among the most sustainable structural wall systems available, yet still capable of delivering exceptional comfort and energy efficiency. The prefabricated design means walls can be assembled in days, reducing site time and labour. At the award-winning Old Holloway home in Herefordshire, EcoCocon panels enabled an airtight, all-electric build that generated more energy than it consumed, thanks to solar power.

Now used in over 25 countries and expanding quickly in the UK, EcoCocon helps shift construction from “less harmful” to “climate beneficial.” By making use of agricultural byproducts like straw, it supports rural economies while creating breathable, toxin-free interiors. It’s a building system for healthy living — and a truly zero-carbon future.