From British Gypsum
Thistle Hardwall is a gypsum undercoat plaster for use on most masonry. With a final coat of Thistle Multi-finish, it provides a smooth, inert, high quality surface to internal walls. The combination has superior impact resistance to efflorescence, and gives a durable base for application of decorative finishes. Features & benefits Suitable for most masonry backgroundsincluding aircrete blocks, common bricks, medium density blocks and dense blocks (but not smooth low suction blocks) Easy to apply and ready to use High bond strength and reliability Estimating guide approx. 3.0m2 per bag 4 month shelf life Can be spray applied Pre-mixed gypsum undercoat plaster Long lasting Higher impact resistance