Micro concrete on tiles

Historically, Marius Aurenti was the first to apply millimetre-sized micro concrete over tiles

When Marius Aurenti invented the world’s first concrete capable of covering flooring in just 2 mm, it opened up a whole new world of decoration. This worldwide innovation can be applied to a wide range of surfaces in new-build projects, including concrete floors, walk-in showers, terraces and furniture, as well as micro concrete over tiles.

Obviously, with such a low thickness, renovation work, especially over tiled floors, was going to be a key market for micro concrete.

If you’re buying a house or renovating a business, restaurant or hotel room, the presence of tiles often brings a style that can’t be combined with contemporary decor.

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Tile preparation by Passion Service Habitation prior to application of Marius Aurenti micro concrete
There are two ways to renovate tiles: – Either remove it, i.e. with a jackhammer or by hand, break each tile and remove it from its support; – Or cover it with another surface coating.

Tile removal is a complex problem. If it’s glued, removing the tile will cause a lot of breakage, take a long time and often leave a lot of adhesive residue on the substrate (which is usually a screed).

A mechanical sanding step is then required to level the substrate and remove any organic residues, which may be detrimental to future coatings.

In the case of a floor where the tiles have been sealed, as was done in the past, the screed is completely bonded to the tiles. Tile removal is a destructive process that can damage the screed, causing severe delamination and, where necessary, damage to the underfloor heating system.

Likewise, covering a tiled floor with another material usually generates height problems. This will interfere with junctions between rooms in a house or business, requiring the installation of special strips. Beyond 3 mm, there are many problems and very few materials are suitable.

Marius Aurenti millimetric micro concrete is obviously a revolutionary solution for renovating old tiles, since it can be laid over them without destroying the existing substrate.

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Béton Ciré on tiles in a bathroom at J'aime Tout Chez Toi - Béton Ciré Marius Aurenti Teinte Corde

Why choose micro concrete over tiles?


  • Visual continuity
    of cladding by eliminating joints, thus considerably enlarging the space.


  • Elimination of joints between tiles
    making surface maintenance much simpler

  • Quick and easy : The tiles don’t have to be removed, which limits the destruction work and sometimes the aesthetic consequences, which are not easy to manage, particularly in terms of skirting boards and joinery… This means that the job can be completed and back on the road in just 10 days.

  • Sustainability and ecology
    : This avoids the transportation of waste and the recycling of materials in an ecological approach.


  • Compatible with underfloor heating
    Because millimetric micro concrete is a conductive material, it does not affect the performance of underfloor heating systems, whether low-temperature water or electric heating.

Project micro concrete over tiles in a living room. From floor preparation and application of Marius Aurenti micro concrete by Passion Service Habitation before application

FAQ – Micro concrete on tiles

Almost all of them!
Indeed, all ceramic, stoneware, mosaic and faux wood tiles that have been glued down can be covered with micro concrete.
If the tiles have not been glued down, but have been sealed in place, you’ll need to check their adhesion beforehand with the help of a qualified Marius Aurenti professional.

If the tiles are old and very porous, extra care is required. These include terracotta and porous limestone cladding, etc. These surfaces have usually been previously treated with waxes or oils. As they are difficult to remove, this will require more extensive sanding. If the waxes or oils have penetrated deeply, it will not be possible to create micro concrete on tiles. In the latter case, a professional will be needed for a proper diagnosis.

The advantage of using micro concrete over tiles is that it eliminates all the joints between the different tiles.

This doesn’t mean, however, that if there are expansion or separation joints in the house, they can be covered. This will ensure that the screeds and slabs underneath, and sometimes the walls too, can continue to work in line with ground movement and temperature.
A few joints may still be necessary when laying micro concrete over tiles, but the elimination of joints between tiles is truly spectacular.

At Marius Aurenti, creating micro concrete over tiles is considered a surface-intensive process.
For this reason, the minimum thickness of micro concrete should be 2 mm.
To this must be added the thickness of the epoxy mortar, which will depend on the level to be made up.
If the substrate is flat, this mortar will be 1 or 2 mm thick.
The micro concrete will be 2 to 3 mm higher than the existing tiles.

At Marius Aurenti, creating micro concrete over tiles is considered a surface-intensive process.
For this reason, the minimum thickness of micro concrete should be 2 mm.
To this must be added the thickness of the epoxy mortar, which will depend on the level to be made up.
If the substrate is flat, this mortar will be 1 or 2 mm thick.
The micro concrete will be 2 to 3 mm higher than the existing tiles.

Renovation work on a tiled floor is a little more extensive than that required for micro concrete on a new surface.
As explained in the protocol on this same page, this will require prior sanding, followed by the application of an epoxy mortar. Generally speaking, a job of this type will take between 5 and 7 days to complete, with a further three days drying time for light use, and a few days more for intensive use or in bathrooms.

The concept of price in the realization of a micro concrete on tiles is not an easy one to tackle, but here are several aspects that will influence the final price that an expert craftsman will offer you:

– Access to the job site will influence the price, since in big cities it’s more complicated to carry out jobs than in the countryside or small towns.
– The size of the job will strongly determine the price, as a small site often requires just as many steps, and therefore more round-trips in proportion to the surface completed.
– Differences in labor costs between countries will make it impossible to generalize a price.
– The presence of many different surfaces, several small rooms, niches and curves all have an impact on the final price of the project.

After a technical discussion with the Marius Aurenti teams, who will be able to give you a price range based on your surface area, we advise you to have the price specified by estimates drawn up by trained experts. Rates do not vary greatly on the same site, depending on the number of craftsmen consulted.
However, this will help you refine your budget.

It’s a classic Marius Aurenti micro concrete over tile in the bathroom!
Several jobs are carried out every week in this type of configuration.
Unlike a floor, in a bathroom you’ll need to cover vertical tiles, which is also possible with micro concrete.

Similarly, if in doubt, a liquid waterproofing system can be added prior to the installation of micro concrete in a bathroom renovation if the quality of the waterproofing cannot be verified beforehand.

Marius Aurenti’s micro concrete is therefore compatible with horizontal and vertical surfaces in dry rooms, as well as in wet rooms with the use of Liquid Waterproofing Systems (LWS).

At Marius Aurenti, we consider this surface to be far too dangerous, as there have been problems with the porosity of the joints over time and with adhesion, making this type of work far too risky for a professional.
Experience has also shown us that very few exterior pavements meet the standards expected by DTU 13.3. So there are two solutions for people with tiled exteriors: either remove the tiles and go back to the slab to lay micro concrete over them, provided the substrate is of good quality.

Producing micro concrete on tiles is surely the most complex exercise in millimetric micro concrete.
With the help of our tutorials and documentation, you can create your own micro concrete.
Our advice is to start with a small surface area for someone who is not familiar with the work, and for larger projects to put you in touch with a qualified expert.

You need the standard tools for applying micro concrete, plus special tools for sanding and applying epoxy mortar.
Here is the list of tools for micro concrete:
– American knife
– Smoothing machine or stainless steel, plastic 200mm or perfect liss 35 cm centimetres
– Ideally a double-bladed mixer, or at least a single-bladed mixer
– 30 kg scale, ideally with 5 g accuracy, or small kitchen scale for small areas
– Empty 5- and 30-litre buckets
– Yellow and purple soft masking tape (paint)
– Protective tarpaulin
– Water for rinsing materials and green brite tape for scrubbing!
– Gloves, mask (dust or vapor fffp2 for venis), coveralls, goggles, safety shoes
– Orbital sander and special 40 and 60 grit discs
– Monobrush for floor surfaces with special 40 and 60 grain discs
– Small and large rolls and sleeves
– 2 mm stainless steel rod for clean stops
– Auxiliary heating
– Extension cords
– Paper towel roll
And for epoxy mortar
– Diamond surfacer with
– 6mm notched comb

Marius Aurenti micro concrete is guaranteed crack-free for 15 years. The substrate is irrelevant. It is important to check the substrate for cracks beforehand during the substrate diagnosis. A fiberglass interlining can be recommended by an expert craftsman when making epoxy mortar.

The advantage of using micro concrete over tiles is that it eliminates all the joints between the different tiles.

This doesn’t mean, however, that if there are expansion or separation joints in the house, they can be covered. This will ensure that the screeds and slabs underneath, and sometimes the walls too, can continue to work in line with ground movement and temperature.
A few joints may still be necessary when laying micro concrete over tiles, but the elimination of joints between tiles is truly spectacular.

Après toutes ces années d’expertise, voici les sols considérés à risque, sur lesquels il est déconseillé d’appliquer du béton ciré millimétrique :

  • Terrasse en carrelage
  • Terre cuite readitionnelle
  • Tomettes
  • Pierres poreuses scellées
  • Carrelage scellé sur une dalle en terre-plein
  • Carrelage collé ou scellé présentant une humidité supérieure à 4% ou des variations d’humidité importantes entre les joints
  • Carrelage collé sur ragréage
  • Carrelage collé sur panneaux en bois ou toute autre structure en bois
  • Carrelage collé sur un autre carrelage
  • Sol carrelé collé ou scellé présentant des décollements sur plus de 10% de la surface ou des zones qui sonnent creux
  • Carrelage posé sur mousse ou panneau en mousse polystyrène au sol
  • Carrelage présentant des fissures

Appliquer du béton ciré sur carrelage pour masquer les défauts existants présente le risque que ces problèmes réapparaissent sous le nouveau revêtement. Le béton ciré ne doit pas être utilisé comme un simple cache-misère.

Les Secrets de Marius Aurenti pour Réussir le Béton Ciré sur Carrelage ou Pierre 

Chez Marius Aurenti, spécialiste du béton ciré depuis plus de 25 ans, il est essentiel d’aborder la question des types de sols en carrelage ou en pierre à éviter avant d’appliquer un béton ciré millimétrique. L’engagement envers la durabilité des ouvrages est au cœur des valeurs de l’entreprise. Forte de 40 ans d’expérience, elle a réalisé des dizaines de milliers de chantiers, dont beaucoup en béton ciré sur carrelage. Le réseau d’artisans experts formés aide à concrétiser les projets de rénovation.

Recommandations pour une Rénovation Réussie

Un ponçage mécanique diamant intensif est recommandé pour casser la surface du carrelage et éliminer les résidus de nettoyage, les huiles et autres substances qui pourraient réduire l’adhérence du revêtement en béton ciré. Un ponçage approprié permet d’optimiser la durabilité et la finition du projet de rénovation.

Faites confiance à Marius Aurenti pour accompagner dans la réussite du projet en béton ciré sur carrelage ou pierre. Des artisans experts sont à disposition pour offrir conseils et service de qualité.

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Béton Ciré sur carrelage Teinte Marius Aurenti Fossile IVD

130 m² of Marius Aurenti micro concrete on tiles by Passion Service Habitation teams.

The customer chose Marius Aurenti Fossile IVD for his house in Besançon.

Presentation of the complete upcoming project.

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Maison Lacuzon micro concrete on tiles

Application of micro concrete on old floor tiles and wall concrete on new plasterboard for this pretty bathroom.

A Passion Service Habitation project.

Presentation of the complete upcoming project.

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Micro concrete on Château tiles at Lac St-Point

Application of Marius Aurenti micro concrete over old tiles, smoothing of old tiles and waterproofing in bath and shower areas.

A Passion Service Habitation project.

Presentation of the complete upcoming project.

Application procedure on tiles :


  1. Substrate diagnosis
    Checking tile adhesion and moisture content. When the work is carried out by a qualified professional, this step is fundamental, as it will determine whether the substrate is suitable for micro concrete or not.

    At Marius Aurenti, this protocol is carried out using a reception sheet, developed over more than 20 years by building professionals, which guides the experts through this fundamental stage.


  2. Surface preparation
    Mechanical sanding to ensure an adherent surface.
    This second step is an obligation in the Marius Aurenti process. Diamond sanding is a fundamental step. It will ensure perfect mechanical bonding with the future new coating. Obviously, the duration of this stage will depend on the surface, but it generally takes one or two days.


  3. Epoxy mortar application
    Use a mortar with epoxy resin for a solid base. This stage is generally completed in a single day, and requires drying that depends on humidity and temperature conditions.

  4. Production of micro concrete : Apply two or three mass-tinted coats for a perfect finish. Just like on a new floor, or in a bathroom, the application is done in two or three coats, generally completed in two days.
  5. Finishing Application of waxes and varnishes for long-lasting protection. Finishing treatments can involve up to four stages, and can take up to two days to complete, with some drying time required.

Micro concrete on tiled floors inside the home

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In the kitchen

The kitchen, often exposed to dirt and frequent cleaning, while being a convivial and practical space, benefits greatly from a micro concrete floor, easy to maintain and pleasant to live on.

If you already have a tiled floor in your kitchen, you can easily cover it with concrete flooring.

For further information:

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In the bathroom

The bathroom is a place where the cleanliness, ease of maintenance and warmth of concrete are particularly appreciated, as are its soft-touch texture and the variety of shades it comes in, enabling it to harmonize with all decorative styles.

Opting for a micro concrete floor in your bathroom brings a touch of modernity and elegance to your intimate space.

If you want to replace existing tiles with micro concrete, it’s perfectly possible!

For further information:

In the living room

Micro concrete reveals its full potential as an exceptional decorative concrete when used as a living room floor covering.

In this often spacious room, it harmonizes and magnifies the space by providing a uniform, seamless surface that often matches the style of the furniture and walls.

Easy to care for, it feels soft and warm to the touch.

For further information:

In the bedroom

In a bedroom, opting for a micro concrete floor offers a host of advantages.

The material’s natural warmth creates a comfortable atmosphere in the room, its smooth surface feels soft and sensual to the touch, and its ease of cleaning ensures impeccable hygiene, protecting you from dust mites and the allergies they can cause.

As a thermal conductor, concrete also provides pleasant, efficient underfloor heating.

Find out more:

Outdoors

Micro concrete for outdoor floors offers as many advantages, if not more, than for indoor spaces: it’s resistant to weather conditions such as rain and snow, as well as to the sun’s UV rays and temperature variations.

It is protected by a treatment coat comprising a water repellent, an oil repellent, a mineral glaze and a varnish.

Find out more:

On terraces, pool decks, courtyards and walkways

A terrace floor covered with micro concrete will retain its beauty and cleanliness for a long time, benefiting from reliable protection thanks to its layers of mineral stain and varnish.

Similarly, for a patio, courtyard or driveway floor, micro concrete can be applied directly to an existing concrete slab, benefiting from a water- and oil-repellent finish for optimum durability.

Find out more:

Marius Aurenti micro concrete maintenance products for

Marius Aurenti’s specialized finishes guarantee first-rate protection for materials, while making them easy to clean and maintain with standard detergents or Marius Aurenti’s professional cleaning products.

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Béton 71 colors - Marius Aurenti