Mapei Ultracolor Plus Medium Grey – 5kg

Mapei Ultracolor Plus Medium Grey sits in the mid-range of the grey spectrum, offering a balanced, neutral tone that works well with both light and dark wall tiles in bathrooms and kitchens. If you are deciding between grey shades, Medium Grey is a versatile choice that avoids the coolness of Silver Grey while remaining lighter than Manhattan Grey. It shares the same technical specification and BioBlock mould-resistant formula as the rest of the Ultracolor Plus range.

Yes, Mapei Ultracolor Plus Medium Grey is suitable for use with underfloor heating systems, making it a dependable choice for bathroom wall tiling projects where UFH is present. The grout’s formulation is designed to remain stable and colour-consistent even with the mild temperature changes associated with underfloor heating. As with any grout application over a heated substrate, make sure the system is switched off and fully cooled before you begin grouting.

Mapei Ultracolor Plus Medium Grey has a pot life of 20-25 minutes after mixing, so it is important to only prepare the amount you can comfortably apply within that window. Mixing smaller batches is especially recommended in warmer conditions, as higher temperatures can shorten the working time. You should aim to finish and clean the joints within 15-30 minutes of application to achieve a neat, consistent result.