Environmental Impact and Circularity of Interior Plasters
Published on 1 June 2022
Publication
A CSTC publication examining the environmental impact of interior plasters (cement, lime, plaster, clay) and their circular potential. It highlights key factors affecting carbon footprint (production, transport, end-of-life) and suggests ways to increase durability, recycling, and local sourcing.
This CSTC article emphasizes the crucial role of interior plasters (cement-, lime-, plaster-, or clay-based) in enhancing sustainability and circularity in wall systems. Key points include:
How production processes (e.g., limestone calcination for cement or lime, gypsum heating for plaster) and transport increase energy use and CO₂ emissions.
The importance of correct application and suitable thickness to maximize plaster longevity.
Opportunities to reduce impacts by skipping certain finishing layers, selecting low-impact paints, and sourcing local materials.
The recycling potential of some binders (gypsum, clay) and difficulties at demolition stages (plaster often mixed with other waste streams).
Why choosing plasters based on composition (recycled content, end-of-life solutions, reparability) and technical requirements (moisture, performance) supports a more circular construction approach.