The C-TEC BW1 Ultimate Bathroom Tanking Solution is your optimal choice for a watertight bathroom installation. This 5L waterproof membrane, coloured green for easy identification and application, ensures total protection against water ingress and damage to your bathroom's structure. With a single unit quantity per pack, this high-quality C-Tec branded membrane is designed for effective tanking, providing a reliable and long-lasting seal. Its generous 5-litre capacity is perfect for ample coverage, making it an essential component for any bathroom renovation or new build project.