Leca® Lightweight Aggregate (LWA) is a natural, unique and sustainable lightweight clay aggregate. Leca® Lightweight Aggregate has remarkable properties which ensure its versatility for use in a vast number of structural and geotechnical applications. It is the only "all in one" aggregate solution for Architects and Civil Engineers to overcome problematic areas in construction and design. Thanks to its unique properties, expanded clay has a broad range of applications from residential housing, commercial building, structural and geotechnical build and horticultural and landscape projects and is emerging as an environmentally sustainable and more effective alternative to traditional heavyweight and cumbersome aggregate.