Mapei Ultracolor Plus Moon White - 5kg

Mapei Ultracolor Plus Moon White is engineered with an anti-efflorescence formula to maintain a consistently bright, uniform white finish rather than developing the patchy grey tones that can affect lesser white grouts over time. Its water-repellent surface also helps repel the soap scum and limescale that commonly dull white grout in bathrooms, making it easier to keep clean with regular wiping.

Yes, Mapei Ultracolor Plus Moon White is confirmed as suitable for use with underfloor heating systems. The grout is formulated to accommodate the gentle thermal cycling that occurs with underfloor heating without cracking or losing adhesion, making it a reliable choice if you are tiling over a heated floor in a bathroom or kitchen.

To estimate your requirements, use the guide figure of 1 kg per 1.33 m² for 100 mm x 100 mm x 8 mm tiles with 3 mm joints, which means one 5 kg bag covers roughly 6.65 m² at those dimensions. Measure your total wall area in square metres, divide by 6.65, and round up to the nearest whole bag to ensure you have enough – it is always wise to order a little extra to account for wastage and any touch-ups needed after the initial application.