It is usual that the problems of dirt and difficulty of cleaning are caused by an incorrect cleaning at the end of the work, and specifically with the existence of remains of grouting material that when "cleaning" we distribute uniformly all over the surface. What happens is that a thin film of these grouts or bonding materials remains, practically inappreciable, and what they do is retain the dirt.
Therefore, when this happens, it is necessary to carry out a thorough "end-of-work cleaning", eliminating these remains by means of the use of specific descaling cleaning products or "quitacementos", always from prestigious suppliers and scrupulously complying with the recommendations for their use.
Most of the remains of bonding or grouting material that must be cleaned after a work can be removed with water, using a mop or cloth. However, there are remains of material that can be more difficult to clean, either by their own nature or because they are embedded in the relief of the tiles. For this cleaning, do not use salfumán. We recommend the use of specific products, such as the one we propose below: