During the repair work, we try to simplify some stages, and therefore we ask ourselves the question - is it possible to put new tiles on the floor and walls on top of the old one? The approach is very non-standard, opinions differ. Let's try to understand this issue.
This method of laying is used extremely rarely.
Expediency of the operation
In addition to the possibility of sticking tiles on old tiles, another question arises - why leave the finish from the previous repair? There is a rational explanation:
- It is not necessary to carry out the costly, in terms of effort, and sometimes in terms of money, dismantling of the previous cladding.
- The amount of construction debris and dust is reduced.
- There is no need to level the surface, which reduces the consumption of materials.
- Reduced preparation time. This factor is relative, since, saving on some operations, one has to perform other actions, sometimes no less laborious.
Before making a final decision, consider the other side of the issue. If the cladding is laid on the old tile, then you will inevitably encounter such problems:
- Hiding the area. Tiles with mortar already occupy a layer of several centimeters. Additional application of glue and tiles will further reduce the area of the room and raise the level of the floor.
- Defects in old masonry. It is important to check the previous finish for voids and loose parts. Otherwise, there is a risk that the new cladding will collapse with them, as the coating will not withstand the additional load.
- Tile processing. Before laying, the old material is carefully processed. Such preparation will take no less time and effort than simple dismantling.
When facing an old tile, it is necessary to comply with many requirements.
To summarize: in general, laying tiles on tiles is possible, it all depends on the specific situation. But if at least one problematic point bothers you, it is better to abandon the idea.
Training
It is very important to properly treat the surface, since the strength of the future coating depends on its quality. For this, a number of manipulations are carried out:
- Chip removal. It is advisable to check all the old finishes for fragile areas and, if serious defects are identified, get rid of them in advance.
- Cleaning. A layer of grease and other dirt will inevitably accumulate on the surface of a wall or floor that has been in operation for a long time. It is imperative to get rid of this, since laying tiles on a dirty surface simply will not work. There should be absolutely nothing left that will reduce the quality of adhesion between the coating and the adhesive.
- Removing frosting. The main problem is the glossy surface. If you lay a tile on top of a tile with a smooth, shiny glaze, chances are the new finish will start to peel off immediately. To prevent this, the coating is cleaned. It is best to use a grinder with a grinding nozzle. Be sure to wear goggles and a respirator as the icing generates a lot of dust and small glass shards. In the absence of the above tool, go over the tile with sandpaper or make frequent notches. The latter option is rather unsafe, as it violates the density of the previous masonry.
- Degreasing. Glue tiles only on a clean surface. Additionally, ceramics are primed.
Stages of preparation for facing
Adhesive selection
The quality of laying tiles on old tiles largely depends on the mortar used. In this case, it is important to ensure reliable contact between the materials. Adhesion of ceramics and glue is inferior to adhesion to concrete. Therefore, it is important to open the water-absorbing layer of the tile by removing at least 60% of the old glaze. It is also recommended to use special concrete-contact primers designed for such work.
Reinforced highly elastic compounds
To securely fix the tiles on the walls, it is important to choose the right adhesive. For flooring, it is permissible to use conventional mixtures or a cement-sand mortar. For walls, dense and at the same time elastic compositions are selected.
It is best to glue the tiles on quick-drying solutions. Accelerated drying will prevent the finish from slipping, as it sets to the surface and increases in density. Remember that if you glue the material on too thick a layer, the adhesive setting speed decreases, and the risk of masonry delamination increases.
Rules for performing installation work
Be sure to use a stop bar to prevent slipping of the cover. Lay tiles in several stages. Do not stick too many rows at one time, especially when it comes to overall products.
Consider how to properly stick tiles on tiles:
- First, a small amount of glue is applied to the old lining.
- Then the mass is leveled with a notched trowel.
- Next, the tile is applied and pressed against the mortar.
- The position of the element is corrected, with the help the width of the seam is set. Same with the next tile.
- After the initial drying of several rows, work on the repair of the upper part of the wall continues.
- Having glued the entire area, wait until the solution dries well. It will take 1-2 days, with high humidity in the room - increase the time to 4. Only after that proceed with grouting and cleaning the coating.
As you can see, the principle of finishing such a base is no different from the usual technique. Do they lay ceramic tiles on top of the old one? Yes, this option is possible, but only if all preparatory measures are observed. In general, it is better to turn to a more traditional technique and not risk it.
Hello! We are renovating our bathroom and have a problem. The old tiled floor is very durable, even, smooth. But the decor and color are absolutely not like the purchased wall tiles. Before that, the walls were just painted, but we easily scraped off the paint. But in order to knock down the floor covering, you will have to work hard with a puncher, then re-level the base, and so on. This is long and costly. We want to put a new tile on top of the old one.
Tried searching the forums for answers. Some participants argue that this is quite acceptable. Others recommend not saving and solving the problem with a major overhaul. What do you say?
Answer
Good afternoon! As practice shows, most homeowners prefer not to carry out dismantling work. In the case of tiles, this can really be avoided, and here's why.
Tiles as a floor material are thin plates of fired clay mass of high density and strength. The coating is produced in a huge variety of sizes, but at the same time with two types of surface:
Laying tiles, according to the recommendations of the manufacturers, should be carried out using a cement-based contact adhesive, less often a polymer-based one. Cement-containing dry mixes are produced by absolutely all manufacturers of building mixes (from Kreps to Knauf), since the composition is quite simple, but the quality factor of the material largely depends on the quality of the raw materials. Polymer products belong to a highly specialized series and are produced only by the largest chemical industry concerns (Eurocol, Uzin, Kiilto, etc.)
Tiles are most often laid on cement dry mixes. With their help, you can not only partially level the rough base, but also fix the floor covering well on almost any base of sufficient strength (at least 150 MPa) and rigidity.
The old ceramic floor can be safely attributed to such floors. With one essential condition - a smooth glazed or varnished (enamelled) surface has an almost zero coefficient of adhesion. But first you need to create a so-called adhesion bridge. Or, more simply, to make the top of the tile rough. This is achieved in several ways:
Any other primers labeled "for non-absorbent surfaces" may be used. They even allow you to lay tiles outdoors and are suitable for a variety of difficult substrates, including ceramics, stone, bitumen, asphalt, old glue and more.
- Removing the surface enamel or glazed layer with a grinder with a special nozzle for granite and stone. This method is used infrequently due to the formation of a huge amount of dust during operation. However, it allows you to put a new tile on the old one with the guarantee that not a single element will “fly off” in the future.
- By cutting notches on the surface of the coating with any tool - an ax, a grinder with a diamond cup, etc. This method, in combination with priming, is considered quite reliable, and is also time-tested.
Thus, it is allowed to glue new floor tiles on the old one, provided that there is a rough surface. If the finish is not smooth, you can simply use reinforced tile adhesive.
Before work, be sure to check the floor for:
Next, you need to clean the surface, degrease, primer Betonkontakt or make notches, followed by removing the floor from debris and dust. After that, tile adhesive is applied in accordance with the instructions and ceramics are laid.
If you want to remove the glazed or enameled surface completely, do not forget to carefully dedust and clean the base, degrease and prime after removing the smooth coating. Only after that it is possible to carry out laying of a tile on glue.
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Decorative ceramic tiles are perhaps the most popular finishing material for decorating floors in the bathroom, hallway, hallway and kitchen.
This is due to its practicality, hygiene and enviable durability.
Laying tiles is not an easy job, and requires certain knowledge and skill, and in order for everything to turn out as neatly and aesthetically as possible, you need at least a little more experience.
It often happens that the owner of the apartment would like to replace the old floor tiles with a new one, but he is simply afraid to take on this task. Dust and debris, laborious dismantling work - all this stops. In this case, the question arises about the possibility of laying tiles on an old one that has long been laid.
The answer is unequivocal - the technology of laying new modern tiles on old tiles exists and is actively used during repairs.
But before deciding to implement this idea, you need to carefully consider the advantages and disadvantages of this method, calculate the real possibilities in application to the specific conditions of your own apartment.
If the old tiled flooring was once laid out in good faith, then it in itself is a good solid foundation for the new one.
There will be no need for very laborious, costly, dirty and noisy work to dismantle the old pavement.
In addition, the removal of old tiles will necessarily entail large-scale work to repair the base, install new waterproofing, level the level with a cement screed, etc.
In a number of cases, laying tiles on an old tiled base is also most appropriate from the point of view of the impossibility of removing it due to passing water or sewer communications, and capitally installed plumbing equipment.
However, it should be remembered that such a technology is still not always applicable:
If the old coating is severely loosened, the cement-adhesive mixture under it crumbles, then it will be necessary to carry out a complete dismantling.
Laying new tile on tile on the floor over a fragile base is simply doomed to failure - such a floor will not last long.
In multi-storey buildings of an old building, the level of the floor tiled with metlakh tiles in the bathroom or in the bathroom can be quite different from the horizontal.
Thus, in order to give the room neatness and geometric correctness, it is necessary to add a screed, and for this it is necessary to dismantle the old tile.
Another "pitfall". The second layer of tiles will inevitably lead to an increase in the level of the floor.
But in the bathroom or in the toilet, it must be lower than in the corridor, and additionally protected by a 1.5-2 cm threshold - to avoid the possibility of accidental flooding of residential premises.
Careful measurements should be made before undertaking such work.
The first is a thorough revision of the floor!
If, nevertheless, a decision is made to lay decorative tiles on the old tiled floor, then the most important condition for the success of the work will be careful preparation of the base.
First of all, you need to literally crawl around the entire old floor on your knees and inspect each tile.
If any of them “play”, have significant cracks, creak when pressed, they must be removed.
Just visually assessing the condition of the old coating will not work - you need to tap the entire tile with a hammer.
If a ringing sound is heard, this indicates the peeling of the lining, which means that it will not serve as a reliable basis. You will also have to remove these fragments, clean the freed surface, raise and level to a general level with a sand-cement mortar.
It is clear that this is done only if these are single tiles. When such a deficiency takes on a massive character, there is no doubt - you need to remove all the old tiles completely.
How to prepare the surface for laying tiles
The main enemies when laying a new tile coating on an old one are a glazed surface, which significantly reduces the adhesive characteristics of adhesive mixtures, and banal old dirt, which also prevents the tile from adhering to the base.
To increase the strength of the coating to be laid, it is advised to make notches on an old tile with a glossy slippery coating, drill holes, and even better, carefully process it with a “grinder” diamond disc, up to the ceramic base. After that, the surface must be thoroughly vacuumed.
Particular attention is to cleaning the old coating from dirt. During the time that it was on the floor, an almost invisible greasy coating necessarily formed on it, which can not affect the adhesive composition in the best way.
Degreasing is carried out in different ways - someone uses organic solvents, gasoline, acetone. Those who do not want to breathe chemicals can be advised to thoroughly rinse the floor several times with warm water with the addition of caustic soda.
We should not forget about the condition of the tile joints. This is a traditional place of accumulation of dirt and grease, and their cleaning should be carried out without fail.
If the old grout has begun to crumble, it should be removed to the maximum possible depth, and after washing, cover with tile adhesive or cement mortar to the level of the coating.
There is an opinion that if the old tiled coating is primed with Betonokontakt, you can do without first roughening it.
However, the ideal option would still be to carry out both - this will serve as a guarantee of success.
As primers applicable in this case, in addition to "Benonokontakt", they call "Ivsil Basis-Beton", "Plitonit-Grunt-Superkontakt", "Cerezit CN94".
All further work can be continued only after the complete drying of the primer layer. You should get a grainy surface, similar in texture to sandpaper.
Some craftsmen, in addition, practice applying a thin layer of tile adhesive - about 2 mm, and after it hardens, they start laying tiles.
Will any glue work?
Laying tiles on top of an old tile coating in its technology differs little from the usual one, although there are still some nuances:
- The height of the comb on the spatula should be about 10-15 mm.
- When laying out the starting row, it is better to place a new ceramic tile so that the seams do not coincide with the old ones.
But is any glue applicable for such work?
Is it worth it to listen to those who claim that after processing by Betonokontakt, the brand of glue is of no fundamental importance?
Probably, it is still worth considering the issue of choosing glue very responsibly, especially since we will mainly talk about laying tiles in a room with high humidity.
What do the experts advise??
Ivsil Profit glue has good characteristics that will allow you to arrange a reliable and durable coating.
True, it was designed more for porcelain stoneware, but in the case of laying on top of old tiles, it is an excellent option.
High adhesion, even to a smooth bottom tile layer, has "Ceresit CM17". Its purpose is precisely complex surfaces, and the new coating will turn out to be reliable and durable.
A lot of good reviews deserved the adhesive composition "Vetonit Renovation". About him, even some finishers claim that it may not be necessary to roughen the old tile - such plasticity and adhesion in the adhesive composition.
Of course, such adhesive mixtures, designed for particularly durable coatings and complex surfaces, are more expensive than conventional ones. However, savings in this matter can be disastrous, and it is better to play it safe by purchasing really reliable material.
So, putting a new tile on an old ceramic coating is a perfectly acceptable option, if you strictly follow all these rules.
Sometimes the choice of this technology is the only right decision, both in terms of economy and the timing of repairs. And if you are faced with the question of whether such a floor finish is permissible, feel free to get down to business - everything should work out.
Or do you just not want to spend time and effort on it? The exit is simple. Provided that the old pottery is held firmly, the new one can be placed directly on top of it. Read carefully the basics of how to lay tiles on tiles and you will be able to complete the finishing work as quickly as possible.
In what cases is this installation possible?
This pottery is not always possible. Let's see when it is permissible, and when it is strictly prohibited.
materials
Experts who have considerable experience and know everything about how to lay tiles on tiles recommend the use of the following consumable mixtures:
- Primer Ceresit ST-19 betokontakt or a similar mixture from another company.
- Adhesive composition for tiles Ceresit CM-17 or CM-117. You can also purchase SM-16 or SM-115.
Why betokontakt? Because this acrylic primer has particles of sand, cement and other additives that can create roughness on the glossy surface of ceramics. Only when using it can a good result be guaranteed.
Get a little more new tiles than you need according to your calculations. Ten percent over is enough to eliminate the lack of a whole tile that occurs when cutting or splitting, as well as in case of calculation errors.
Work progress
Before gluing tiles on tiles, be sure to prepare the base. This stage is the main one in determining the quality of the final result.
Foundation preparation
Make sure the old finish layer is strong. If any tile is chipped or cracked, remove it. Where the sounds of emptiness are heard, the floor should also be cleaned of old tiles. Seal the formed empty places and depressions with cement mortar under the floor level.
Then remove all dirt and dust. If cracked in old seams, it should also be removed. By opening the base with the above primer, you will create a grain on the surface, which will give additional adhesion to the new mortar. The soil is quite expensive, but it allows you to do everything quickly.
There is another way out in the question of how to lay tiles on old tiles in conditions of poor adhesion. To improve it, you need to remove the glazed layer from the old tile. This can be done using an ordinary grinder and an emery wheel. It is enough to carefully scratch and the adhesion of the glue will increase significantly.
Another option is to create scratches manually. You can also use coarse sandpaper or a sanding grater with the appropriate attachment for this.
For better adhesion, you can make notches on the tile, removing with a grinder not the entire glossy layer, but only 60%. Notches can be made with any suitable tool. The distance between them should not exceed 20 mm. This is the slowest and most time-consuming method, therefore specialists rarely resort to it.
We put ceramics
- Only the base (wall or floor) needs to be lubricated with adhesive solution.
- Please note that for a conventional ceramic adhesive mixture, it is necessary to prepare the base more carefully.
- When treating the base with soil, you can protect the surrounding objects with an oilcloth. Please note that pipes and taps must also be covered.
That's all the basic rules for laying new ceramics on the old. If the decision is made, then, following the above instructions, you can do very high quality.
When repairing an apartment, a situation often arises when a new one needs to be put in place of the old tile. The dismantling of old tiles is hard work, associated with the need not only to remove the tile itself, but also to take out large volumes of construction debris, to level the floor or walls. Therefore, the question "is it possible to put tiles on tiles" arises in such cases very often. Is it possible? Yes, subject to certain conditions.
Inspection of old tiles
To find out whether it is possible to lay a new tile on an old one, it is necessary to examine the strength of its attachment to the base. To do this, the tile is first inspected in order to detect cracks and chips, falling off fragments. If the tile looks strong, it is tapped with a wooden mallet, and if there is a rattle or cracks, a poorly fixed tile is chipped off. If most of the tile does not hold well, and there are voids under it, you will have to dismantle it, level the floor or walls, and only after that lay a new tile.
It is also necessary to find out whether the floor level will become higher than the threshold level of the room. Too much thickness of the coating on the walls also does not look aesthetically pleasing, and in this case it is also better to remove the tiles.
Laying tiles on tiles
If the condition of the old coating is satisfactory, and it is decided to lay tiles on tiles, it is necessary to roughen the old tiles, otherwise it will not be possible to achieve good adhesion of the new tiles. You can do this in several ways:
- Remove the glossy top layer from the tile;
- Make notches on the tile;
- Treat its surface with a special primer.
The first two methods are laborious and involve a lot of dust. The third method requires additional material costs for the purchase of a primer.
Removing the top layer, as well as making notches, is performed using a grinder. This is done in order to create contact between the tile adhesive and the bottom moisture-absorbing layer of the old tile. The top layer of the tile can be removed incompletely, while the contact area of the adhesive with the tile should not be less than 60%. Notches are applied at a distance of 1-2 cm from each other.
A more modern way to roughen smooth waterproof surfaces is to treat it with a concrete-contact primer. This primer has excellent adhesion to the glazed top layer of the tile and creates a rough surface on top of it, on which the tile adhesive fits perfectly.
Technology of laying tiles on tiles:
The tile laid on top of the old one can serve faithfully for many years, but there are situations when this is not recommended. Laying tiles on tiles is undesirable if:
- When tapped, the tile is not destroyed, but the sound is non-uniform. This indicates the presence of air voids, and the tile laid on top of such a coating will create too much stress on the old mortar, causing the tile to fall off along with the old one.
- A room, such as a bathroom, has a very small area and poorly aligned walls. In this case, laying tiles on top of old tiles and a thick layer of plaster greatly reduces the useful dimensions of the room, and it is better to remove the old coating and do the cladding in accordance with all the rules.
- The tile is very old and prone to the formation of small cracks, chips, destruction of the top layer. Tiles laid on such a base will not last long, and everything will have to be redone.
- Old communications are laid under the old tiles without access to the access hatches and pipes. If it is necessary to replace pipes, it will be necessary to carry out large-scale dismantling work and remove both layers of tiles at once. It is more rational to spend a little more time and money on dismantling and laying new pipes and tiles.
- The tiled floor is uneven or has a sufficiently large slope that needs to be leveled. In this case, it is better to remove not only the tiles, but sometimes the old screed, and repair the floor in accordance with all the rules.