The Norcros Stop Mould Flexible Wall Tile Grout in Midnight Coal is a 5kg waterproof powder grout from Bia Trends. This grout is specifically designed to be mould resistant, making it ideal for use in areas prone to mould growth. The sleek midnight coal colour adds a touch of elegance to any tiling project, whether for floors or walls. Easy to use and long-lasting, this grout is a must-have for DIY enthusiasts and professionals alike.