Mapei Ultracolor Plus Grout in London Grey is a high-performance, anti-efflorescence, quick-setting and drying polymer-modified mortar. It is designed for grouting joints up to 20mm wide and features water-repellent Drop Effect® and mould-resistant Bio Block® technology. This grout is easy to clean, offers uniform colour, and is certified for use in the marine industry. Its residual Greenhouse Gas emissions are fully offset. Key features include mould resistance, quick readiness for use, water repellency, and ease of cleaning. Ideal for enhancing any tiled surface with a touch of character.