Technical info Grouts

How to choose a tile grout

Grout is not merely a material that colours the gap between tiles. The area of use of the covering, the water and dirt load, cleaning chemicals and mechanical action determine the right grout type. In the KraftBau system the choice is made between KR-200, KR-250 and KR-300 according to the conditions of use.

September 11, 2026 2 min read

Tile grout application

Grout for dry indoor areas

In standard residential interiors and dry areas, KR-200 FUGA KRAFT FLEX is the main solution. The product's current technical data sheet is checked for joint width and suitable substrates. Joint channels must be clean and of uniform depth, and grouting must not begin before the adhesive has matured sufficiently.

Wet areas and outdoor environments

In areas with increased water exposure, such as bathrooms, showers and pool surrounds, KR-250 FUGA KRAFT POOL is used. On balconies, terraces or outdoors, the grout product alone cannot be relied on; the underlying waterproofing, falls, movement joints and covering system are resolved together.

Areas that require epoxy grout

KR-300 FUGA KRAFT EPOXY is the premium option for areas with technical and mechanical loads or high chemical exposure. The application, cleaning and working process of an epoxy system differ from cement-based grout. The applicator should follow the product technical data sheet and plan the work area accordingly.

Colour and sample check

Grout colour should be assessed together with the tile surface, light, joint width and cleaning conditions. On porous or sensitive coverings a small trial should be made, and the work should not proceed to a large area before the colour and cleanability result has been seen.

Grout is not a movement joint

Wall-floor junctions, structural joints and the project's movement joints must not be closed with rigid grout. These points should be handled with the relevant flexible detail solution.

Product recommendations in this content are based on the KraftBau system file. For consumption, mixing ratio, layer thickness and waiting times, refer to the product's current technical data sheet (TDS); for your project conditions, get technical support.

Products

Recommended KraftBau products

Products mentioned in this content. Each card leads to the product page and its current technical data sheet (TDS).

KR-200 FUGA KRAFT FLEX

standard dry indoor areas

Fuga Kraft Flex Grout KR-200 / 20 Colours

View product

KR-250 FUGA KRAFT POOL

wet and outdoor area system

Fuga Kraft Pool Siliconised Grout KR-250 / 20 Colours

View product

KR-300 FUGA KRAFT EPOXY

technical, mechanical and high chemical loads

Fuga Kraft Epoxy Grout KR-300 / 6 Colours

View product

FAQ

Frequently asked questions

Can KR-200 be used in a bathroom?

The main grout of the bathroom system is defined as KR-250.

Is epoxy grout necessary in every home?

No. It is considered where there are special hygiene, mechanical or chemical load requirements.

Does a cracked grout joint create a waterproofing problem?

Grout is not the primary waterproofing; the waterproofing system beneath must be continuous.

The next step for your project

The products in this content are part of a system that works together. Explore the system, find your nearest point of sale or get technical support for your project conditions.