Do spoinowania płytek ceramicznych warto użyć gumowej szpachli w miarę elastycznej. Its flexibility will guarantee deep pressing of the grout into the gaps between the tiles. Such a putty can be cut from an ordinary strip of harder rubber or soft plastic. When grouting, the putty is first drawn diagonally at an angle of 45 ° to the joints, to better press the jointing mortar into them. Then drag the putty along the joints, to fill and even out the joints even more fully.