Plaster Key White (25 L) is a high-performance bonding agent specifically formulated to improve the adhesion of gypsum and cement-based plasters to smooth or non-porous surfaces. This versatile, water-based primer eliminates the need for intensive mechanical keying, such as hacking or chipping, saving significant time and labor on-site. Once applied, it creates a high-grip surface that ensures a long-lasting, durable bond, effectively preventing the plaster from peeling or cracking over time. Its distinctive white color allows for easy visual coverage checks, ensuring no spots are missed during application to brickwork, concrete, or stone. Designed for both interior and exterior use, this 25 L drum provides extensive coverage for large-scale residential or commercial renovation projects.