Damp patches climbing up your walls are a clear sign of rising dampness. Without a damp-proof barrier, ground moisture moves upward through bricks and concrete like a sponge, causing stains, peeling paint, and long-term wall damage. Blockout RD stops rising damp at its source by creating a silicone damp-proof barrier inside the wall. Through simple drilling and injection, it dries from within, blocks moisture permanently, and protects walls from future water damage—quick to apply and built for l