The Wales Institute for Sustainable Education (WISE) at the Centre for Alternative Technology demonstrates how natural materials can deliver robust performance at an institutional scale. Designed for teaching and conferences, the building consists of glulam timber frame, Hemcrete® external walls, and 7.2-metre-high rammed-earth walls for the lecture theatre. Each chosen for its specific structural, thermal, or environmental strengths. Prefabricated timber cassette floors improve buildability, enable long spans, and manage natural moisture-related movement. The envelope is fully breathable, combining hemp-lime, earth, lime renders, and timber windows to create low-toxicity interiors and stable thermal conditions.

The clear hierarchy of materials shows how regenerative strategies can align with mainstream construction practices while achieving low embodied carbon, energy efficiency, and occupant comfort. WISE offers a prototypical model for designers seeking practical ways to integrate natural materials with technical confidence.