Ethylene propylene diene monomer (EPDM) sheets are synthetic rubber materials widely used in applications such as roofing membranes, seals, and gaskets due to their durability, flexibility, and weather resistance. The manufacturing process of producing EPDM sheets involves dusting their surfaces with fine, non-reactive powders such as mica or talc. This creates a thin lubrication barrier that reduces stickiness to itself and to equipment, making handling and transportation easier. Dusting also prevents adhesion, protects sheets during curing and storage, and reduces surface defects. 

Despite these benefits, the dusting process can pose challenges, including environmental and health risks, such as potential hazards from powder inhalation. Additionally, the final product is not aesthetically clean and requires an additional cleaning process to remove residue for optimal bonding to substrates (e.g., insulation boards) during sheet installation as a roofing membrane.