Yes, Expanded Clay Aggregate or ECA used for Lightweight screeds and substrates.
Due to its strength, lightweight, and affordable price, Expanded Clay Aggregate (ECA) is an ideal choice for screeds and substrates, particularly in buildings which require lightweight construction.
ECA uses a unique construction that incorporates a honeycomb structure, leading to a much lower weight and higher durability, compared to traditional concrete. Additionally, ECA is moisture-impermeable and has high thermal insulation properties.
Whether you plan on leaving the screed and substrate unfinished, or finishing it, and floating a smooth surface, ECA is an affordable construction material which is ideal for all building projects which require screeds and substrates.