Mapei Fast-Setting Grout, 5Kg, Used for Durable, Water-Repellent Joints in Ceramic and Porcelain Tiles, Sand - Pack of 4

It is formulated to fill joints from 2 mm up to 20 mm wide, making it versatile for various tile layouts and larger-gap applications.

It features a water retention system that reduces the need for constant rewetting on large surfaces, is fast-setting, and offers excellent water and frost resistance, plus alkali, fade, and mould/bacteria resistance for long-lasting colour and performance.

This variant comes in 4 x 5 kg boxes and the color is Alu (aluminium grey).

It can be used on interior walls and floors as well as exterior areas, including ceramic, porcelain, and natural stone tiles, provided joints fall within the 2–20 mm range.

1) Clean and prepare joints. 2) Mix the powder with clean water to a smooth, lump-free paste according to the product label. 3) Use a rubber float to press grout into joints, removing excess grout. 4) Allow the grout to set for the recommended time, then wipe off hazy residue with a damp sponge. 5) Let the grout cure undisturbed; avoid heavy water exposure for the first 24 hours.

Yes. Wear appropriate PPE such as gloves and eye protection when handling the powder, work in a well-ventilated area, avoid inhaling dust, and follow the material safety data sheet (SDS) for safe use and disposal.

Ultracolor Plus is formulated to be highly resistant to water and stains without mandatory sealing. Refer to the project needs and tile type; sealing could be optional for certain natural stones or high-stress environments.

Compared with other grouts like Keracolor S or Ultracolor Plus FA, Ultracolor Plus 133 Alu offers strong water retention, fast setting, and superior mould/bacteria resistance. For color variety and large-area performance, Ultracolor Plus is a preferred choice, especially on high-traffic surfaces. See alternatives on Fepy for color and performance contrasts: https://fepy.com/product/mapei-ultracolor-plus-133-grey and https://fepy.com/product/mapei-keracolor-s

Ideal for bathrooms, kitchens, outdoor patios, swimming pool surrounds, and any tiling project with moderate to heavy foot traffic where gaps are 2–20 mm wide.

With 4 x 5 kg boxes per carton, it offers cost efficiency for larger tiling areas, reducing the number of boxes needed and helping to manage project budgets more effectively.

Common issues include efflorescence on certain substrates and shading differences in large areas. To minimize problems, ensure proper substrate preparation, follow mixing and application times, work in manageable sections, and perform thorough cleaning as you go. If shading occurs, ensure even joint depth and consistent grout application across the surface.

If you’re looking at other options on Fepy, you can explore Mapei Keracolor S and other Ultracolor Plus color variants to match or contrast with your tile choices. Example alternatives on Fepy include: https://fepy.com/product/mapei-ultracolor-plus-133-grey and https://fepy.com/product/mapei-keracolor-s for comparison.