Polished concrete vs microcement: advantages of each coating

Currently there is a lot of confusion, due to ignorance, about polished cement. In fact, most people associate it with the typical industrial-style pavement and strong gray tone with mirror effect that is used in the interiors and exteriors of large areas such as offices, shops, factories, warehouses and parking lots. Even, although to a much lesser extent, in some private homes.

However, most of the time what is assumed to be polished cement is actually microcement. The decorative coating that is currently trending in interior decoration and design, both in homes and in shops and premises. A coating that has also spread like wildfire on outdoor terraces, facades or swimming pools.

In this article you will find everything you need to know and didn't know about polished cement: what it is, its main qualities, the different finishes it allows, the application process, the price per square meter and, above all, the main differences with themicrocementor smoothed microcement.

Ground floor company with polished cement floor.
Image of the ground floor of an industrial company with polished concrete floor.

What is polished concrete?

Polished cement, also called polished concrete, is actually a decorative finish, not a coating per se. This product is mainly used in outdoor spaces of car parks, shopping centers or sports courts and, to a much lesser extent, in some indoor rooms.

Polished cement is a finish resulting from sprinkling a cementitious mortar with aggregates and, afterwards, polishing the floor to bring out its shine with a rotary polisher. This technique of polishing the pavement is called troweling.

Advantages of polished concrete

Polished concrete is designed to cover surfaces where the functionality of the pavement is more important than its aesthetics. Why? Because polished concrete is characterized by its great durability and resistance, two elements that make it ideal for covering those industrial surfaces that are exposed to a high traffic and weight. In fact, they are widely used for loading and unloading areas, as the polished concrete pavement does not crack.

In addition, polished concrete floors resist very well to the tire rolling. That is why we see this type of finishes very often in car parks and parking lots.

Another quality of polished concrete floors is that their smooth and shiny surface prevents the accumulation of dust and dirt. A finish that also enhances the feeling of spaciousness.

Operator polishing polished cement pavement with rotary polisher.
Operator polishing and shining the polished cement pavement with a rotary polisher.

Disadvantages of polished concrete

But it is also necessary to know that polished cement presents a series of drawbacks and disadvantages to take into account. Below we point out the main ones:

  • The polished cement can lose shine over time due to very abrasive liquids such as industrial solvents. Therefore, it will need to be polished again.
  • It can end up cracking and cracks may appear if the expansion joints are not properly made or if the pavement is misused.
  • This finish should be avoided in places with cold or very hot temperatures, as polished cement is not a good thermal insulator.
  • It can only be applied on horizontal surfaces.
  • The process of application requires time, as it demands to carry out works and use machinery. In relation to this, it has joints.
  • Just as it happens with temperature, polished cement flooring has poor acoustic insulation.
  • It is a low porosity material and, in addition, it needs mesh for its structure.
Polished concrete floor in living room
Living room of a luxurious house with polished concrete floor.

Finishes in polished cement

Although polished cement is mainly associated with gray finishes due to the locations where it is usually applied, there is the possibility of choosing seemingly riskier colors such as black, red, green... Polished concrete or cement is applied in airports, car parks and parking lots, shopping centers and factories.

Polished concrete bathrooms

Polished concrete bathrooms and sinks do not exist. This type of finish is confused with the use of other decorative coatings such as burnished cement or a microcement sink. In fact, microcement is one of the most used coatings to renovate this room due to the great possibilities of use it offers.

Microcement in bathrooms is perfect for lining shower trays or bathtubs, thanks to the waterproof and non-slip capacity it can achieve through the use of specific sealers. But also for creating shelves, bathroom furniture, walls and floors.

How to make a polished cement floor

The installation of a polished cement floor is not much different from the application process of another type of concrete pavement. The components of sand, aggregates, cement, and water are indisputable.

As it is also the case that the concrete mix can be made both on site and with specialized concrete mixers. This last alternative is the most recommended when it is necessary to cover large surfaces.

Next, we explain step by step how to make a polished cement floor correctly:

Step 1: prepare the ground

Tidy up the terrain, making sure there are no debris or dirt. If there were, remove and clean. Then check the pavement levels, in case it is necessary to fill the surface.

Step 2: formwork

Formwork the area that is going to be paved with polished cement. A process whose duration will vary depending on the square meters of surface.

Step 3: use mesh

The next step is to strengthen the structure of the future polished concrete floor. For this, it is necessary to use mesh, which will provide the pavement with greater resistances.

Step 4: pour the concrete

Empty the concrete mix onto the pavement. It is very important in this step to smooth and level the surface, with the help of a ruler.

Polished cement floor ground floor dwelling
Ground floor of a bright house where the entire floor has been covered with polished concrete.

Step 5: check the thickness of the slab

It's time to check the thickness of the slab, depending on the level we have used as a reference in the formwork step.

Step 6: curing of the concrete

Wait for the concrete to cure and dry properly. If necessary, use a float to smooth the pavement to achieve a much smoother finish.

Step 7: polish the floor

To finish making a polished concrete floor, you have to polish the surface to get that characteristic shine. It can be done with a helicopter or a polisher.

Can polished concrete be applied outdoors?

Just because polished concrete is a decorative coating that predominates in interiors does not mean that its use is limited to these spaces. The resistance and durability that this material enjoys make it an equally valid alternative outdoors. An ambivalence that, despite the cons that this material presents compared for example with microcement, constitutes the reason for its popularity in recent years.

In this way, it is a decorative technique that can be applied in a multitude of outdoor spaces such as car parks, shopping centers, supermarkets, industrial warehouses, etc.

Price of polished cement per m2

The price of polished concrete per square meter depends on several factors, among them the dimensions of the floor to be covered as well as whether it is indoors or outdoors. In this sense, the final cost can be increased in some outdoor applications.

Similarly, the rates of each professional can cause significant fluctuations in the price in the same way as the time when the work is carried out. Broadly speaking, the price of polished cement per m2 fluctuates between approximately 40 and 50 euros.

Industrial warehouse with polished concrete floor.
Impressive industrial warehouse which has been clad with polished concrete.

How to clean a polished cement floor: expert tips

The rooms that contain polished concrete floors breathe modernity on all four sides. Especially the environments in which the popular industrial style has been sought to reproduce. Very practical and resistant floors that following a small cleaning protocol will look impeccable for a long time.

Take note of the best tips for cleaning a polished concrete floor. The experts speak!

1. Daily cleaning of polished concrete flooring

Although this finish does not require a deep cleaning like other materials such as parquet or wood, which are much more delicate, it is highly recommended to clean the polished concrete floor every day. Even if it is in a superficial and quick way. How? With a cloth or mop to first remove the dust, and then scrub the surface with water and neutral soap.

2. Rinse with water, always

To keep the polished cement floor glossy, it is very important to rinse with water after using neutral soap. A tip that becomes even more relevant when the soap is replaced by cleaning products. In this case, if the pavement is not rinsed with water after its use, the residues that could remain on the surface would gradually reduce its shine until it fades. It is forbidden to let the product dry before adding water.

3. Keep aggressive and oil-based products away

Never, under any circumstances, clean your polished concrete floor with aggressive products or those that include oil in their formulation. Keep ammonia, bleach, and solvent-based products at bay; the floor will lose its shine. Do the same with oil-based products, because they will create a kind of film on the floor that will promote the creation of dirt.

Maintenance of polished concrete floor: what you have to do

That the resistances of a floor coated with polished cement are exceptional does not mean that it must be kept in good condition so that it continues to be so for a long time. Something logical that happens with any material that decorates the floor of the home, regardless of the space in which it is located.

In this sense, and just as it happens with cleaning and has just been explained, experts also agree on the steps to take to maintain the polished cement floor in an optimal state for a long time. This is what you need to know, and do.

Acierta con el barniz sellador

The varnish protects the polished cement floor, gives it greater resistance and waterproof finishes. It is as important to make a perfect application of the material as to seal it properly. The varnish can be applied periodically, if desired, to strengthen the performance of the finish.

2. Renew the protective layer once a year

Once a year doesn't hurt. A popular saying that can be extrapolated to polished concrete. In floors that suffer a higher degree of traffic, it is highly advisable to renew the protective layer of the floor between 6 and 9 months approximately. Although it will ultimately depend on the use.

3. Protege el suelo de cemento pulido de manchas

Following the previous advice, when the layer that protects the polished cement floor deteriorates over time, it is completely exposed to many factors. Stains are one of them. To avoid unnecessary headaches, take note.

Has any liquid or substance been spilled on the floor? Clean as soon as possible! Use absorbent paper to prevent dirt from penetrating the pavement.

Then, clean the floor with the most suitable product for it. If the stain is oil, for example, you will need to use a degreaser. Expert tip: to check compatibility before regretting a bad decision, do a small test with the product in an area that is not very visible. Always rinse with water afterwards.

Differences between polished cement and microcement

If at this point you are considering using one of these two materials in your project, we provide you with useful information to help you in your choice after comparing the pros and cons of each of them. Next, we are going to address the main differences between polished concrete and microcement.

1. Polished concrete is thicker than microcement.

The most noticeable difference between both finishes is their thickness. The microcement has only between 2 and 3 millimeters, which allows it to be applied both on horizontal surfaces (floors, stairs, ceilings...) and on vertical surfaces such as walls. It is a construction material so thin that since it does not weigh it can be applied anywhere without fear that the structural load will be affected.

Something that does not happen with polished concrete, whose thickness is between 5 and 10 cm and whose application is reserved only for floors and pavements.

2. Polished cement generates debris, microcement does not

Another disparity between microcement and polished cement refers to debris. The smoothed microcement is placed over the existing material, whether it is floor or wall. An excellent adhesion that avoids works and the debris that these entail.

A case completely opposite to polished concrete, a finish that requires construction to completely lift the existing floor or pavement and the use of machinery for this.

3. The installation of polished concrete is much longer

This point is closely related to the previous one. As microcement does not require construction, the application process is very fast. A procedure that in the case of polished cement is noticeably extended.

Bright industrial warehouse with polished flooring.
One of the rooms of the large industrial warehouse where polished cement flooring has been installed.

4. Polished concrete is only for floors, microcement also for walls

While the versatility of microcement allows it to be used as a coating for walls and floors, polished concrete can only be applied to floors. A differentiation that, logically, has skyrocketed the popularity of the former at the expense of the latter.

5. Compatibility vs incompatibility with radiant floor

Underfloor radiant heating is a great alternative to radiators and central heating due to its benefits. However, this system is not compatible with any coating.

The microcement, which enjoys great thermal conductivity, is perfectly compatible with a radiant floor. In fact, it is one of the most recommended building materials.Hereyou will find everything you need to know. A quality that polished cement cannot boast of.

6. Only polished concrete needs expansion joints

The polished concrete requires the making of expansion joints, approximately every 4 or 5 meters apart. On the other hand, microcement is a continuous coating and, therefore, there is no need to make expansion joints. This is why the use of smoothed microcement has skyrocketed in interiors to the detriment of polished concrete.

7. Microcement is more versatile than polished cement.

Microcement is not only a continuous coating that does not require works or expansion joints, but its application is also faster and simpler.

But not only for that reason, but because the smoothed microcement also provides the security of being a coating of excellent durability and resistance not only to traffic like polished cement, but also to blows, to wear by abrasion, to chemicals or scratches, among others.

And, above all, because it offers more decorative solutions as it can be applied on any surface (horizontal or vertical) and material (concrete, tiles, ceramics...). A wider range that facilitates the use of microcement in interiors and exteriors, both in private homes and in premises, businesses and other companies. In short, for all this and more, microcement is much more complete than polished concrete.

In short, for all these reasons and more, microcement is much more versatile than polished concrete.

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