Care of Microcement and Micro-Concrete Surfaces

Microcement has become a popular coating in bathrooms, kitchens, shops, and cafés because it can be applied over existing tile or screed without removal and gives a seamless, monolithic look. Although the word "concrete" appears in its name, its care resembles neither that of concrete floors nor that of natural stone. What determines the lifespan of this coating, which is only a few millimeters thick, is most often the thin layer of varnish on top. In this article, we briefly explain the structure of microcement, what to watch for in the first weeks, which products to use for daily cleaning, how to deal with scratches and stains, when maintenance polish and re-varnishing are needed, and where the limits of repair lie.

In short: Microcement is a coating made of cement, water-based resin, additives, and mineral pigments, applied in layers a few millimeters thick, and the polyurethane varnish on top protects it from water and dirt. The essence of care is protecting this varnish: cleaning with water and neutral soap, staying away from bleach, ammonia, and limescale remover, not dragging furniture, and renewing worn varnish in time.

What Is Microcement? A Thin-Layer System

Microcement, known in Turkey as mikrobeton, is a thin coating mortar prepared by mixing a cement-based binder with water-based resins, additives, and mineral pigments. Manufacturers usually state the total thickness as 2–3 millimeters. This mortar is not applied in one go but in layers: the primer that prepares the substrate, a mesh embedded where needed to prevent cracks, coarser-grained base coats, fine-grained finishing coats, and finally the protective varnish on top.

Knowing this structure is important for understanding why its care differs from that of natural stone. A marble slab is centimeters thick and the same stone all the way through; when scratched, a thin layer can be polished away to renew it. In microcement, however, the color and texture exist only in a shell a few millimeters thick, with tile or screed beneath it. It is not possible to renew this shell by sanding it down; protecting the surface is much easier than repairing it.

Microcement should also not be confused with concrete grinding and polishing. Concrete polishing means processing a thick concrete slab itself with diamond abrasives and polishing it; microcement, on the other hand, is a thin coating applied over an existing surface. In one case renewal by abrasion is possible, while in the other abrasion destroys the coating.

The Real Protector: The Varnish on Top

Microcement itself is porous; without varnish, water, oil, and dirt penetrate easily. For this reason, a water-based polyurethane varnish is usually applied as the final layer. The varnish gives the surface waterproofing, stain resistance, and the desired level of gloss; matte, satin, or glossy finishes are determined by this layer. Some manufacturers also offer special matte varnishes that reduce slipperiness for floors and wet areas.

In daily use, the layer that wears, scratches, and is weakened by chemicals is this varnish layer. As long as the varnish is intact, the microcement beneath it is protected; once the varnish wears down, the surface begins to absorb water, darken, and hold stains. So the question to ask in microcement care is not "is the surface dirty?" but "is the varnish still intact?"

You can check the soundness of the varnish simply at home. Put a few drops of water on a rarely used corner of the surface and on the most walked-on area. On sound varnish, the water stays as a bead and the color of the surface does not change; on a worn area, the water spreads quickly and darkens the surface beneath. The difference between the two areas shows that it is nearly time for new varnish.

The First Month: Curing and Opening to Use

Microcement does not reach full strength on the day application is finished. Manufacturers usually allow careful walking a few days after varnishing and normal use after about a week; they state that full hardness and chemical resistance are reached about a month after application. These times vary depending on the product and the temperature and humidity of the environment; the installer's instructions should be followed.

The main points to watch during the first month are as follows:

• Avoid wet cleaning: In the first weeks, the surface is cleaned only with a dry mop or a lightly damp cloth; washing with plenty of water and using chemical products are postponed until the varnish has fully cured.
• Rugs and carpets: Rugs and rubber-backed mats are not laid down during the first month; varnish deprived of air may not cure properly, and rubber backings can leave color marks on the surface.
• Furniture placement: Heavy furniture is placed by lifting rather than dragging, and felt pads are stuck to its feet; fresh varnish is at its most sensitive to scratching.
• Bathroom use: The shower area is not used until the period specified by the installer has passed; early use in areas constantly exposed to water can cause the varnish to turn white.

Daily Cleaning: Which Product, Which Cloth?

The general recommendation of manufacturers for daily cleaning of microcement is water and neutral soap. Dry dirt and sand are first removed with a soft broom or microfiber mop, then the surface is wiped with a well-wrung damp mop. Since sand and dust act like sandpaper under shoes and wear down the varnish, regular dry cleaning is as important as wet cleaning.

The table below summarizes which products can be used safely on microcement surfaces and which should be avoided:

If a floor scrubber or robot vacuum is to be used, the brushes and pads must be soft and the machine must not leave excess water. We covered our recommendations on machine use on natural stone floors in our article on floor scrubbers ; the same caution applies to microcement. You can find a broader look at the chemistry of cleaning products and their effects on surfaces in our article on cleaning chemistry .

Scratches, Impacts, and Furniture Marks

Microcement is a hard coating, but it is not invincible against impacts and sharp objects. A falling metal pot, a stiletto heel, or a dragged chair leg can scratch first the varnish and then the microcement itself. Superficial scratches in the varnish often become less noticeable with maintenance polish; scratches that reach the microcement can only be restored through repair.

Furniture marks are one of the most common complaints on microcement floors. Dragging a heavy sofa or cabinet leaves long lines on the surface, while wheeled office chairs rolling in the same spot wear the varnish locally. Felt feet, transparent protective mats under wheeled chairs, and lifting furniture instead of dragging it prevent the vast majority of these marks.

On walls and countertops, the main risk is impact. A heavy pot striking the edge of a microcement-covered countertop can cause a small chip along the edge. On kitchen countertops, hot pots are also a risk for the varnish; since the varnish can soften under a hot pot and leave a mark, using a trivet is the simplest precaution here as well.

Stains, Limescale and Wet Areas

Under a sound varnish, microcement shows good resistance to stains: spilled coffee, wine or oil leaves no mark if wiped up in time. The problem begins in areas where the varnish has worn away. In these areas the liquid reaches the microcement and penetrates into its pores; the stain is then no longer on the surface but inside the coating, and may not come out with cleaning.

Bathrooms and shower areas are where microcement is put under the most strain. Limescale left by hard water, soap residue and constant moisture form a whitish film on the surface over time. Although it is tempting to remove this film with acidic descalers, these products wear down the varnish and the microcement. The safer way is to prevent limescale from building up in the first place: squeegee the glass and the wall after every shower, dry the surface, and use the neutral products recommended by the manufacturer for weekly cleaning.

Another point to watch in wet areas is the joints. If the silicone around the shower tray, sink and fixtures, and the joints at the corners are not sound, water can seep under the coating. In that case the problem starts not on the surface but underneath; blistering, discoloration or the coating lifting in places are signs of this.

Maintenance Polish and Renewal Schedule

Most manufacturers recommend special maintenance polishes, applied over the varnish at intervals, for microcement floors. These polishes form a thin, renewable protective layer on top of the varnish; wear occurs in this layer first, and the varnish stays intact for longer. How often the maintenance polish should be applied depends on the traffic and dust load of the area.

Maintenance polish and re-varnishing are not the same thing. Polish extends the life of sound varnish; if the varnish is worn or scratched, polish does not fix it. On floors where wear is evident, the varnish layer can be lightly matted and cleaned by the applicator, and then a new layer of varnish can be applied over it. This process refreshes the surface without touching the microcement itself and, when done in time, noticeably extends the life of the coating.

An approximate maintenance schedule, depending on how the area is used, can be considered as follows:

Repair: Why Is Patching Difficult, and When Is a Full Renewal Needed?

Local repair of microcement is technically possible, but difficult in terms of appearance. The color and texture of the coating depend on the applicator's trowel movements, the number of layers and the drying conditions of each layer. Even a small patch made with the same product can look different from the surrounding surface in tone and texture. This difference is especially noticeable on large, single-color surfaces that receive light.

For this reason, the first question in a repair decision is whether the damage is only in the varnish or in the microcement itself. Wear and scratches only in the varnish can often be eliminated with a new varnish layer applied to the whole area. For deep scratches, chips or cracks that reach the microcement, a patch is made, and to reduce the color difference, the entire wall or section where the patch is located is often re-varnished. Cracks coming from beneath the coating, for example old ceramic grout lines showing through to the surface as lines, are a result of movement in the substrate and cannot be permanently resolved by surface repair alone.

It must also be stressed that the methods used for natural stone have no place on microcement. Honing with diamond pads wears away a coating only a few millimeters thick in a short time and exposes the surface underneath. Crystallization and stone polishing powders work by reacting with calcite; they do not have this effect on microcement and can damage the varnish. Stone impregnators also remain ineffective on top of the varnish. For a broader comparison on the care of new-generation surfaces, see the article on sintered surfaces .

If your space also has natural stone floors, stairs or countertops alongside microcement, a separate maintenance plan is needed for each. If you would like an assessment for your natural stone surfaces, you can reach us with photos through the service request form .