Remove cement film: with home remedies or chemically?


Remaining traces of mortar when laying tiles can be easily removed with a damp cloth. Nevertheless, an ugly gray shimmer often remains on walls and floors. How the cement veils can be removed and what must be taken into account in such work, we have worked out for you.

Cement veils do not stop at professionals or laymen

Especially when laying tiles for the first time and grouting in an exemplary manner, it often happens that after the work is done and when the tiled surface no longer drips wet, hide ugly cement veils, One can still work so carefully and pay attention to the most scrupulous cleanliness, removing cement veils is almost always announced, unless you do it like the stonemason or the professional tiler, that your grout material is immediately and completely washed without residue. However, practice shows that these foggy spots always become visible only when joints and tiles are completely dried out and the room is bright as day or even flooded with sunlight, thus showing the annoying shadows really well.

How do cement veils form when laying tiles?

Of course, the intensity of the visibility of cement masks is closely related to the surface structure, the base material and the color of the tile material. Sometimes the veils are barely visible or not visible at all. If you drive carefully over the surface with the fingertips, however, a certain dullness is clearly noticeable in some places. When flattening tiled surfaces, whether vertically or horizontally, it is almost unavoidable, even with meticulously accurate work, that such visually very annoying gray spots arise. However, as soon as the grout gets into contact with the surface to be treated and is slipped in with the rubber wiper, the problem with the cement curtain begins.

Clean and damp cloths against the worst

Although first and foremost immediate wiping will help at first glance, a lighter but more visible one will be given priority to slightly brighter stone slabs and tiles Never let gray haze completely avoid it, Especially important when working: Change the cloth at regular intervals and make sure that it does not get wet. Thus, the tile joints would only be flushed out further and the formation of the cement curtain is favored by the accumulated amount of liquid in the cloth beyond. Nevertheless: See that with the Just remove the cement filmbecause if you follow our tips below, there will be no sign of it soon.

Cement fog removal depends on the material

Before you start with the removal of cement veils, it is important to know that different material too different approaches requires. Experts advise, for example, that the ground and extremely sensitive surfaces Limestone (eg travertine, marble or cast stone) never with the extremely aggressive applicable cement scum removers to come into contact. It could easily occur superficial chemical burns that are no longer reparable. Moreover, in practice falsely often dark or sometimes black coatings are also sold as granite, which is known to be acid-resistant. Not infrequently, these are cheap imitations of basalt stones, which in turn are very acid-sensitive and their original color can be completely destroyed by chemical cement film remover. Before using acidic detergentsIf you have any questions about the material issue, you should always seek professional advice from a specialist company.

Before you remove cement from veils

As important as the aesthetics of a newly tiled bath panel or shower cubicle may be, start with the Cement veiling always remove only when the grout between the tiles has completely hardened, Otherwise, the still moist binder would cause a new, possibly even wider, veil. Aggressive cleaner, which mixes with the mortar unintentionally, can even cause the entire adhesion of the tiles to the wall is impaired or ineffective. Once the grout has completely cured what reliably verifiable with the thumbnail if the removal of the cement curtain is allowed. However, it can take a week to wait until the time has come.

Method of trial and error

Since, as a relatively inexperienced do-it-yourself maker, you never know exactly how to remove the tiles from the surface to the various agents used to remove the cement film, it is difficult to recommend a universal product that is guaranteed to help and does not cause even greater damage. In any case, before starting the cleaning work, the surfaces to be treated should be thoroughly cleaned again of dirt and dust. Of course, you also need a lot of cleaning material and experience tells us that you have the following things under your belt:

  • Tear-resistant and as long as possible latex gloves;
  • Respirator (with good room ventilation at the same time);
  • Broom, scrubber, mop, several hand brushes;
  • One bucket each with water (one each for cleaning fluid and clear water for wiping);
  • Remove commercially available solvents from the cement film;
  • Home remedies: These include dishwashing detergent (powder), detergents, vinegar (NO concentrate), lemon juice;

Remove the cement haze, first mild, then sharp

In the event that the cement traces on the surface of your Tiles are not too cakedIt is best to start with a low acid concentration of natural acid first. You simply test the success in a little visible area on the surface that you want to clean. Even better, if you take a leftover tile to hand and distribute the cleaning mixture generously there, to rinse it again with clear water after about 15 minutes. The surface and color of the tested tile should not have changed after that, and now try the same method on a cement-infiltrated section. In most cases, home remedies are already quite effective in a single application, and if you start with the weakest cleanser, the lemon solution, you should already see progress. At the end, try the detergent, which must be completely dissolved in the lye that is as warm as possible. Otherwise it could come through the partially coarse powder structures to unsightly scratches on the tile surface. Afterwards it must be rinsed several times in each case and at the end additionally dry-wiped, in order to determine the success remove with the cement curtain.

Alternative: Special chemical cleaner from the specialist trade

Here it is particularly important that you really only the tiles and cement in the removal of cement in no case the cement or Silikonverfugungen Excessively contact with the cleaning agent used. In retrospect, any discoloration that may occur can hardly be completely eliminated. Be sure to pay attention to the application Manufacturer's instructions on the sales packaging and be sure to follow the specified mixing ratio. Much does not help much here, or even harms you. In addition, most industrially produced cement film removers require a certain exposure time, so that you should not rinse immediately with clear water immediately after application. However, there are also cleaners that may not dry, so you better with these funds not large area, but work piece by piece, so on surfaces with a maximum size of two square meters at the same time.

NO good idea: hydrochloric acid

One of the classic representatives of cement scum removal in the commercial sector is hydrochloric acid. It already possesses excellent calcifying properties at a concentration of close to five percent and, like acetic acid, extremely volatile but unfortunately also very corrosive, In practical terms, this means that the acid components quickly turn into flash rust, which stubbornly settles on metals and even on stainless steel as well as in electrical components such as switches and circuit boards.

The professional magazine of the cleaning company "rationally clean" reported in January 2015 of a particularly severe case in which the removal of cement was really expensive. A building cleaner had received an order from a commercial kitchen and used hydrochloric acid in the traditional concentration. The work ultimately led to a good result, which concerned the actual assignment. However, the company was invited to an urgent local meeting the very next day, as during the interim all stainless steel fittings in this new canteen kitchen had rusted. The complaint Total damage was 180,000 euros.

Cement veil removal with steam cleaners !?

The new tiles with a superheated steam generator to carts can be quite a purposeful method, but only profitable if you already own such a device or you can borrow it from a hardware store in your area for a reasonable fee by the hour. The market leader for these devices has an acidic basic cleaning agent on offer, which is also available in smaller 2.5 liter containers from specialist retailers. The hot salt and phosphoric acid-free steam can be used to remove stubborn dirt and cement veils without the need for a major effort.

Occupational health and safety during the cement haze removal

Whether home remedies, steam-Kärcher or chemical cleaning agents are your favorite for this cleaning work, certain Precautions for your own protection should always be adhered to if cement veils are to be removed. Since most cleansers are agents that inevitably come into contact with the skin and the respiratory tract, it is always advisable to wear appropriate clothing and ensure adequate ventilation at the workplace. Furthermore, please note the following:

  • If you handle chemical cleaning agents, protective clothing, protective gloves and eye / face protection are strongly recommended.
  • Also, stirring the cleaning solutions under unfavorable conditions can cause burns or skin and eye damage.
  • Immediately remove any contaminated clothing and thoroughly wash affected areas of skin.
  • Keep cleaners to remove cement film always locked up and secured in front of children.

Tips & Tricks

You did not even lay your new tiles yourself? If you have entrusted a specialist company with this renovation work, you save a lot of work and annoyance with a notice of defects and setting deadlines. As part of the final or rough cleaning of construction sites tilers according to VOB and BGB are obliged to remove the self-induced cement veils, leaving no residue.


Video Board: How to remove Cement and Grout Residue from Tiles - Ecoprotec Guide