Grouting tiles: the correct method for a neat grouting result

Grouting tiles (also known as washing in) is an important step in achieving a durable and neat tile surface. Whether you are laying floor tiles or wall tiles, finishing with the right grout makes all the difference in terms of appearance and lifespan. In this article, we explain how to grout tiles, what materials you need, when is the right time to sponge and how to keep the grout in perfect condition.

What is grouting tiles?

Grouting tiles is the process of applying grout to the joints between the tiles using a rubber trowel or special set. This not only ensures a sleek appearance, but also protects the tiling from moisture and dirt. Correct grouting prevents cracking and promotes even drying of the grout.

How to grout tiles? Step-by-step plan

Follow this step-by-step plan to achieve the best results:

Start with clean tiling and dry joints.
Make sure you have all the materials you need to hand: rubber trowel, sponge, dry cloth, bucket of water and grout.
Use a high-quality grout such as BOSTIK ARDACOLOR FLEX, suitable for damp areas such as bathrooms and kitchens.
Mix the grout according to the instructions – Bostik grouts clearly state the correct ratio.
Apply the grout with a rubber trowel, diagonally across the joints.
Apply enough grout and press it down firmly for maximum adhesion.
After a short time (usually 10–20 minutes) when the grout has dried slightly, remove excess grout with a wet sponge.
Sponge in circular motions, without applying too much pressure, to smooth the surface.
When the tiles are completely dry, finish with a dry cloth to remove any haze.

Grouting wall tiles and grouting floor tiles

Grouting wall tiles requires a little more precision due to the vertical application. Use BOSTIK ARDACOLOR MAXI, for example, which is ideal for grouting large-format tiles.

When grouting floor tiles, it is important that the surface is stable and completely dry. Use a flexible grout such as BOSTIK ARDACOLOR FLEX, which absorbs small movements and does not crack.

Choosing tile grout: which is the right one?

Choosing the right grout for tiles depends on the room, the load and the type of tile. In damp areas, such as bathrooms or showers, it is best to choose a grout with water-repellent properties. ARDACOLOR CLASSIC is a cement-based grout that is suitable for indoor use and easy to apply.

Grouting tiles without a grout float?

Sometimes people try to grout tiles without a grout float, for example with a sponge or rubber glove. However, this is not recommended. The pressure distribution is then uneven, and the grout does not adhere optimally. Always use a suitable rubber or epoxy grout float for a smooth and durable result.

When to sponge the grout?

"When should you sponge grout?" is a frequently asked question. Sponging too early removes too much grout; too late causes a stubborn haze. Wait until the grout has dried to a slightly matt finish but has not yet completely hardened. This is usually 10 to 20 minutes after application, depending on the temperature and humidity.

Cleaning tile grout

After grouting, a haze or film often appears on the tile surface. First use a damp sponge to remove excess material. Then allow the joints to dry completely and rub the surface with a dry cloth for a clean finish.

Tile washing drying time: how long should grout dry?

The drying time of grout depends on the product, temperature and humidity. Cement-based grouts such as BOSTIK ARDACOLOR FLEX usually need 24 hours to cure completely.

Washing tiles ratio: how much water should be used?

With cementitious grouts, the correct ratio of powder to water is crucial. Too much water makes the grout weak and porous. With Bostik grouting products, the recommended mixing ratio is clearly stated on the packaging. Always use clean, cool tap water and mix mechanically for the best results.

Conclusion

Grouting tiles is the finishing touch to your tiling work. It therefore requires precision, the right materials and the right grouting products. With Bostik products such as ARDACOLOR FLEX, ARDACOLOR MAXI and ARDACOLOR CLASSIC and the accompanying tools, you can create a sleek, durable and professional result. Ensure you follow the correct procedure, apply the grout properly and deliver the tiles clean for a perfect finish.