Nicola's advice

How to use acid on the floor

6 June 2024

Floor cleaning is one of the most important domestic and professional activities to maintain hygienic and visually pleasing environments. However, some stubborn stains, limestone or cement residues, and encrusted dirt from construction work, require more powerful cleaning solutions than traditional detergents. In these cases, the use of acids, such as buffered or muriatic acid, can make a difference, offering exceptional results.

The use of acid for floors in the extraordinary cleaning of floors requires knowledge and precautions to ensure both the effectiveness of cleaning and the safety of treated surfaces and operators. This article provides a comprehensive guide on how to use acid on the floor, covering everything you need to know about these powerful chemicals.

Which acid products to use when cleaning floors?

The use of acid products in floor cleaning offers numerous advantages, making them effective tools for surface maintenance. Thanks to their chemical properties, acids can cope with different cleaning needs, but it is essential to use them carefully to avoid surface damage and ensure user safety. Acids are not a single substance, but include a wide range of chemicals designed to clean without damaging materials. Marbec, for example, has formulated over the years a series of specific products, such as VIACEM, DELICACID, POWER DET and HP4 ACID, which represent some of the most advanced and safe solutions available on the market for floor cleaning.


VIACEM is a strong floor buffered acid, designed specifically to remove limescale scale, efflorescence and cement residues from cotto and terracotta floors. It is perfect for post-installation or post-site descaling, allowing the effective removal of efflorescence, cement encrustations and paints. In addition, it is an excellent solution for seasonal cleaning of cotto floors outside that are subject to limestone encrustations due to atmospheric agents.

Compared to conventional muriatic acid, VIACEM produces less corrosive fumes, has a higher emulsion capacity than solid dirt and offers a more controlled dissolution action. These features make it not only more effective, but also safer to use.


This product is specific to remove cement grouts, efflorescence and limestone incrustations without damaging stone surfaces, ceramic materials and stone materials in general.

DELICACID stands out for its controlled action, which makes it perfect for cleaning delicate stone materials such as natural stones, terrazzo, and cement. This detergent is not only effective, but also versatile: it can be used for descaling washes after laying or after construction work, easily removing efflorescence, cement encrustations and paints.

Another great advantage of DELICACID is its ability to handle external cleaning. It is ideal for eliminating the limestone incrustations that periodically form on external floors due to weathering. In addition, its formula makes it suitable for both manual and mechanical washing, as with the use of scrubber driers or high pressure washers.

DELICACID is designed with user security in mind. It contains no hydrochloric acid and does not produce toxic fumes or vapours, ensuring a safer working environment.

However, it is important to note that DELICACID should not be used on polished limestone stones such as marble and travertine, nor on Italian slate (slate) or polished terrazzo.


The concentrated detergent POWER DET has been specially formulated for the extraordinary cleaning of surfaces in polished, lapped and matt porcelain tiles, bringing the material back to its original appearance. Thanks to its powerful formulation, it degreases, descales and removes patinas and substances resulting from external contamination, such as fats, detergents and limestone. These contaminations can be the result of incorrect maintenance or cleaning after laying. With POWER DET, the porcelain tiles returns to its original state, free of stains and halos.

Oltre a essere ideale per la pulizia straordinaria, POWER DET è perfetto anche per la pulizia post-posa. Rimuove efficacemente residui di boiacche, sporco di cantiere, patine calcaree e resinose, nonché malte e fuganti, anche colorati. Tuttavia, è importante notare che questo prodotto non è pensato per la detergenza quotidiana. Per ottenere i migliori risultati, è fondamentale seguire attentamente le istruzioni d’uso e non diluirlo eccessivamente.


This buffered acid detergent has been specifically created to carry out the descaling and cleaning of granite, shale, quartzite, beola, porphyry and stones containing ferrous minerals, which often tend to turn yellow.

ACIDO HP4 si differenzia dagli al differs from other generic buffered acids due to its ability to inhibit the oxidation of ferrous minerals present in stones. This prevents the formation of halos and yellow spots, while maintaining the natural appearance of the material. It is particularly effective in the removal of residues of cement grout, efflorescence and limestone scale, as well as eliminating paint stains and other contamination.

A further advantage of ACIDO HP4 is its ability to remove substantial calcareous incrustations, often due to irrigation water, and to eliminate halos and slight deposits of surface rust caused by external contamination. This makes it an excellent choice for those looking to keep stones clean and spotless.

Important to note is that ACIDO HP4 does not contain hydrochloric acid, which makes it safer and less aggressive than other acid detergents. However, it is essential not to use it on natural stones, terrazzo and non-acid-resistant materials, as it may damage them.

Instructions for safe use of acids

The use of acids for floor cleaning must always be done carefully, following the manufacturer’s instructions and taking all necessary safety measures. To use all these Marbec products safely and effectively, it is therefore important to follow some guidelines:

  1. Personal protection: Wearing protective gloves, goggles and proper clothing is essential to avoid injury. In addition, it is important to ensure that the environment is well ventilated to reduce exposure to vapors.
  2. Application test: If you first use acid detergent, it is recommended to test a small part of the hidden floor to avoid damaging an entire floor.
  3. Read the instructions on the label: we recommend that you always follow the indications on the product label, both for application and safety indications.
  4. Assistance: If you have any doubts, ask for assistance on our Whatsapp number 3348578502.

Thanks to these products, easy to use, it will be possible to eliminate scale and efflorescence from the surfaces, for a result that will meet your expectations!

The products of article
  • 4.80€


    Specific strong buffered acid detergent to remove cement grouts, efflorescence and limestone encrustations on cotto and terracotta.

  • 7.84€


    Specific buffered acid detergent to remove cement grouts, efflorescence and limestone incrustations on stones, ceramic materials and stone materials in general.

  • 16.07€


    Specific detergent for porcelain tiles for extraordinary cleaning to remove halos, stains, and any laying residues. It brings the material back to its original appearance.

  • 12.07€


    Buffered acid cleaner specific for granite, schist, quartzite, gneiss, porphyry, and stones containing iron minerals. Removes cement grouts, efflorescence, limescale. Furthermore, it eliminates rust stains, inhibiting their formation.

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