The Thistle Hardwall Plaster 25kg is a high-performance gypsum undercoat plaster specifically engineered to provide a tough, durable base coat on high-suction internal masonry substrates. Formulated for high-impact resistance and reduced shrinkage, it is the ideal undercoat for application onto medium-to-high density blockwork, brickwork, and existing hard masonry surfaces.
 
Designed for trade professionals, it offers exceptional adhesion and a consistent, workable setting time, allowing for rapid build-up and easy leveling with a straight edge. Once applied and allowed to set, it provides a firm, flat background that keys perfectly with Thistle Multi Finish or Thistle Board Finish topcoats.
 
Supplied in a standard 25kg bag, a single bag covers approximately 3.0m² at a standard 11mm application thickness. It is strictly intended for internal masonry undercoat applications and provides superior surface hardness, making it particularly well-suited for high-traffic areas in both domestic and commercial environments.
 
Available in: 25kg bags