The joints between tiles are a fundamental aspect of the tile project because they contribute to both its aesthetic appearance and its technical performance. The choice of joint width and grout is therefore very important. The following are the aspects that must be taken into consideration.
Contrasting or coordinating colours
Grouts come in a range of colours and should be chosen according to the desired level of visibility. The joints can be grouted in subtly coordinating or highly visible contrasting colours.
Rectified or uneven edges
The choice of tile edge depends on the desired type of joint. Rectified edges allow tiles to be placed side by side with a minimal sized joint to create the effect of a seamless, continuous surface, ideal for interiors with a contemporary style (narrow or butt jointed). Tiles with uneven edges require a wider joint (more than 2-3 mm), creating a more traditional stylistic effect (open joint).
Grouts must comply with standard UNI EN 13888 and must have the suitable characteristics for the project specifications and operating conditions, including exposure to potentially aggressive chemicals. This is essential toprotect the joints from dirt, water penetration and bacterial growth
Source: “Ceramica Amica". Discover Italian Ceramic Tiles. Confindustria Ceramica e Edicer SpA. 2013