When a paving is carried out, the details must be taken into account, and the finishing is best. The color of the joints, that is the spaces between a tile and the other, can be combined with the color of the tiles themselves.
There are in fact available breakouts in a variety of colors including those we see above. Sealants with very showy metallic effects are also commercially available.
The tile joints
The spaces between a tile and the other are sealed with special cements that guarantee a certain hydraulic seal to the flooring by joining the surface of each tile with the adjacent.
This operation that may seem trivial actually has a big impact on the final aesthetic result.
The sealant must be spread evenly over the joints using a damp sponge to remove excess.
Once the joints are dry, the floor can be washed. The grout will not attack on the tile surface.