For regular cleaning, use common cleaning agents on a neutral basis. Cleaning agent should be based on natural soaps with lower pH or an agent with protective components based polymer layers. Agents based on natural soaps have very good washing ability; they leave a protective layer with a velvety sheen. Natural fats deposit in tile pores, which facilitates cleaning later.
If tile surface cannot be cleaned using common agents, it is possible to use special cleaners intended for this purpose (e.g. product called Regener). These agents are mainly acidic, therefore it is recommended to dilute a small amount first to a lower concentration and to test to what extent the laitance (pollution) could be eliminated. Potentially, a more concentrated solution or undiluted agent can be used it at all. Acids in these agents do not affect concrete structure positively; therefore, it is necessary to let the surface to be cleaned saturate with water well prior application to prevent the agent soak into the structure of the tiles. Cleaning agents should not act on tile surface for too long, otherwise the surface can be damaged irreversibly (especially that of smooth polish-ground tiles). It is better to clean more times at shorter intervals. During the action of a cleaning agent, it is good to help it with a normal brush and to wash the surface thoroughly with water after cleaning (to neutralize it).
Regener – cleaning agent for cleaning terraces and pavements for polish-ground and blasted terrazzo tiles. Especially during its application, it is necessary to comply with the principles set out in the previous paragraph to avoid irreversible damage to the tile surface.
It removes cement coatings, laitance and similar contamination arising both during tile-laying as well as contamination causes by subsequent use (regardless of the contamination type and exposure time). Regener removes moss and it is suitable to use it to clean tiling prior restoring impregnation.
Supplier: TopTeramo s.r.o.
Metaflux 75-14 – it is an oil-stain remover. A special agent for removing oil and grease stains from concrete and stone floors, bricks and tiling.
Supplier: Bohemiaflux s.r.o.
Betoncleaner – it is a chloride-free agent for cleaning the surfaces of concrete products, structures and architectural concrete from laitance, lime, dust and for cleaning plastic moulds, etc.
Supplier: Stachema Kolín, s.r.o.
Hydrochloric acid up to 6 % – it is used mainly for removing lime laitance. Prior use, moisten the tiling intensely. To clean exterior tiling, it is ideal to do the cleaning after rain. The moistening of the tiling prevents the acid soaking into the tiles and thus damaging the surface. After cleaning, the tiles need to be washed with clean water. However, acid removes impregnation layer from the tile surface that must be applied again after the cleaning is complete.
Acetic acid up to 4 % – it is used mainly for removing lime laitance. Prior use, moisten the tiling intensely. To clean exterior tiling, it is ideal to do cleaning after rain. The moistening of the tiling prevents the acid soaking into the tiles and thus damaging the surface. After cleaning, the tiles need to be washed with clean water. However, acid removes impregnation layer from the tile surface that must be applied again after the cleaning is complete.