Marble sinks, alternative to gypsum board, Portland cement. Marmox boards are lightweight building boards, insulating against heat and moisture, made from extruded polystyrene foam (XPS), reinforced with a fiberglass mesh, and coated with a waterproof polymer cement layer. They are used for internal and external insulation, creating partitions and walls, forming sinks and washbasins, and covering pipes. They offer an effective alternative to traditional plastering and are characterized by ease of cutting and installation. Components and Features of the Boards: Components: Polystyrene foam (XPS) + fiberglass mesh + polymer cement layer. Insulation: Excellent thermal insulation and complete resistance to water and moisture. Weight: