How to remove the old layer of paint from iron. How to remove old paint from the walls in the kitchen? The cleaning process takes place in several stages.

Repairing a Soviet-style bathroom is almost always associated with the titanic work of removing old paint from the walls.

The former owners painted well, often the first layer of paint was applied directly to the concrete, which does not make the task of ennobling the room any easier.

Leave everything as it is if the new finish will be done using dry plasters, such as drywall. Before finishing with the use of any plaster or adhesive solutions, the paint will have to be removed very carefully.

Otherwise, poor adhesion of the solution to the remnants of the old coating will lead to the loss of the aesthetic appearance of the room in a matter of months.

With all the achievements of scientific and technological progress, humanity has not yet come up with anything new except mechanical, thermal and chemical methods for removing paintwork.

Depending on the chosen method, paint removal is accompanied by:

noise;
Formation of clouds of dust;
The release of foul-smelling and toxic substances.

When choosing a surface preparation method, the following factors should be considered:

Repair budget;
Accessible tool and skills to use it;
Type of painted surface and subsequent work;
Number of layers and type of paint.

The most difficult thing is to clean the concrete surface from oil paint.

In addition, the quality of the new coating may be greatly affected. It is much safer to use chemical and mechanical means.

Mechanical surface cleaning

For mechanical removal of paint, hand or electric tools are used.

Putty knife

Cleaning the walls with a spatula, knife or scraper is the most affordable and time-consuming way. The paint is removed with scraping movements. Such cleaning is relatively silent, relatively little dust is generated., the paint can be cleaned off even where others cannot use other devices. No special tool skills are required.

The main disadvantage is the high cost of time and effort.

Ax or mason's pick

Things will go much faster if you use a small, very sharp ax. In this case, there will be more noise, muscle effort too, but labor productivity is many times higher than when using a spatula.

To remove the paint, frequent notches are made with an ax over the entire painted surface. The more often they are located, the easier the paint then lags behind. The strength of the impact is not of decisive importance.

After that, the paint is cleaned off with gentle movements from top to bottom.

This method is less noisy and dusty compared to the use of electric tools, does not require additional costs for the purchase of reagents and electricity. When processing the surface with an ax, additional irregularities are formed on it, which improve the adhesion of plaster solutions to the base. The ax is most effective on pre-plastered surfaces.

It is almost impossible to remove paint applied directly to concrete or over a thin layer of primer with an axe. The use of an ax requires the appropriate skills and requires considerable physical effort. Practitioners say that a mason's pick is not inferior to an ax in efficiency, but it is much more convenient to work with this tool.

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power tool

Among the most effective methods for cleaning old paint from bathroom walls is removing the coating with a power tool. A grinder with a diamond cutter handles the coating best; instead of a cutter, you can use an impeller or a cutting wheel for concrete. You can also use a grinder or puncher.

Cleaning is done by translational movements along the wall.

With the help of electric tools, you can quickly remove the paint applied directly to the concrete, however, if there is a layer of putty 2-3 mm thick, it is better to use an ax or a spatula. Working with electric tools does not involve significant physical effort, but requires certain skills.

Such cleaning is accompanied by a strong noise. During operation, a huge amount of dust is generated, you need to work in a respirator, goggles and gloves. It is usually not possible to clear the entire space - the tool does not go into corners and other places with complex geometry.

Chemicals

To clean the surface of the walls in the bathroom, a solvent or other chemical agent is applied to them with a roller or brush and left for a while.

After that, the softened paint is scraped off with a spatula. In addition to organic solvents like acetone or white spirit, you can use liquid glass, soda ash and quicklime.

organic solvents

The use of organic solvents has several disadvantages:

If the wall is painted in several layers, you will have to process each layer.
Due to the toxicity of industrial reagents, it is necessary to use personal protective equipment during work.
The cleaned wall must be rinsed several times to remove solvent residues.

When working with reagents, the room must be well ventilated. Children, pregnant women and nursing mothers should not be in the house at this time. Solvent residues are disposed of in accordance with the instructions.

The paint etching method is quite dangerous and can greatly affect the quality of the new finish.

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Inorganic reagents

To soften the paint, you can use a mixture of soda ash and quicklime. To prepare the mixture, you will need 1.4 kg of lime and 400 grams of soda. The components are thoroughly mixed, diluted with water to the density of sour cream and applied to the wall. After 12 hours, the paint can be easily removed from the surface.

A layer of liquid glass can be applied over the old paintwork. After drying, the paint is removed together with the silicate film.

Even with the use of modern chemicals and tools, removing paint from bathroom walls is a rather time-consuming procedure, with many nuances. Whichever method you choose, you still have to be patient and put in some effort.

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Tell your friends!

I also had the same problem 10 years ago. We bought an apartment in a terrible state - repairs have not been carried out in it since the construction of the house. In the bathroom, the walls were painted an eerie dark blue. We removed the paint with a spatula, I don’t even remember how long this process took, I remember that it was very long and tiring. The thought of burning out the old paint also arose, but they did not take risks.

Good afternoon! When we were doing repairs in the bathroom, we faced the problem of removing a layer of old paint, having studied a lot of information, as a result, we first removed the paint with a small hatchet, but it was slow, then we took a construction hair dryer from friends and a spatula, things moved faster and the wall remained flat.

Recently remodeled the bathroom. I cleaned the walls manually with a spatula. I didn’t even know about other cleaning methods. Oh, and I got tired! I will take note of the article.

All the ways to peel off old and fresh paint from the walls: methods on how to quickly remove all types of paints

The bathroom, as a rule, is finished with tiles, which are quite easy to dismantle if necessary. However, sometimes the walls are covered with paint, in which case it will take some effort to remove it.

Easily remove paint from bathroom walls

Removing old paint from the walls is a troublesome and not easy task, which you can really handle on your own. The article will address issues related to the removal of old paint.

When to remove the old layer of paint from the walls in the bathroom

The need for a bathroom renovation can arise for a variety of reasons. Often this applies to the complete or partial removal of wall coverings, including the cleaning of painted surfaces. In the future, a fresh coat of paint or tiling can be applied to a cleaned and preferably leveled wall.

Clean the surface of the walls in the bathroom from paint: what tools will be required

Based on the budget, preferences and capabilities of the person, the list of possible tools can be as follows:

putty knife;
axe;
perforator;
solvents;
hammer and chisel;
grinder.

Of course, this is not a complete list, and some of the main options will be discussed later in the article.

With a hammer and chisel

One of the obvious and crude methods, which, however, demonstrates a fairly high efficiency. Taking a chisel and a hammer, fragment by fragment, you can begin to beat off the layer.

Advantages and disadvantages:

opportunity to save on chemicals;
large time costs;
the need for monotonous physical labor.

This option is best suited in situations where the wall is planned to be plastered in the future.

With paint cleaner

No less monotonous, but less tedious, is the removal of paint with a special caustic substance that etches it. After dipping the brush into the paint remover, you should walk over the entire surface to be cleaned. After waiting fifteen minutes, it remains only to peel off the weakened layer with a spatula.

When working with a paint cleaner, the following points must be observed:

It is recommended to protect your hands with gloves.
The room must be ventilated.
Paint that does not come off the first time should be smeared and scraped again.

With a cord brush

Float:="" left="" margin:="">Removing old paint is not the most difficult task that can be faced in the process of renovating an apartment, and in particular a bathroom. However, this process also has its own characteristics.

Clean up the water base

Water-based paint, as a rule, is used in rooms with a high level of humidity, which is the bathroom. However, despite the fact that water is one of the main components, nothing can be achieved by flushing. It is recommended to wet the walls liberally with plenty of warm water until the paint softens. For a thorough and even distribution of moisture, you will need to use a roller and carry out these manipulations quickly enough, since the moisture dries quickly enough.

Quickly peel emulsion from concrete walls

In the case of emulsion paints, to speed up the process of their removal, you can use the method of active wetting or power tools. Chemicals in the form of various cleaners and solvents can also come to the rescue.

How to peel off oil paints

Oil compositions, like most others, are easily removed from the walls using a thermal method associated with the use of a building hair dryer. Of the simpler options, a combination of warm water and a spatula is suitable.

How to clean old textured paint

The old textured mixture is effectively cleaned from the walls using the same methods as for the emulsion.

Is it possible to tear off decorative painted surfaces with applications

In such a case, the issue is resolved in the same way as with any similar material. The choice of tools is made based on the characteristics of a particular room and the preferences of the master.

What to do after cleaning the base coat of paint

In the event that the main layer or several layers have been removed, a number of actions will need to be taken, depending on how the new coating is planned. As a rule, after removing the main layer, the wall surface is degreased and then treated with a primer. The use of most tools means that the wall will receive minor damage to a certain extent, which will also lead to the need for its subsequent alignment.

What are the most common mistakes

The main point in this issue is that the cleaning of the walls should be done without fanaticism. One has only to overdo it a little and instead of just a cleaned wall, you get a broken concrete surface that will have to be strengthened, leveled and prepared.

It is also worth remembering that cleaning should be complete until the primary concrete surface is exposed.

The article deals with the question of when it may be necessary to remove old paint in the bathroom, how this operation is carried out, and what tools are used.

Useful video

How to remove paint from a bathroom wall

Andrew. K. Stavropol.
I thought about putting tiles in the bathroom on the walls. Heard tile won't stick to old paint. How do you remove paint from a wall?

Many are faced with the problem of removing paint when considering bathroom renovations. Just a couple of decades ago, such wall decoration was fashionable. Before laying the tiles, the paint must be removed, otherwise the new cladding will very quickly fall off in whole fragments. This is not an easy task and the speed of removal will directly depend on the type of paint and the surface on which it is applied. Read the article and use the tips and support video.

Mechanical removal methods

Consider simple mechanical methods that do not require special skills.

An ax and water will do for a plastered wall. By tapping with a sharp ax, like a hammer on the wall, notches are made. The wall is wetted, and then a layer of paint is combed off with an ax blade at an angle to the wall. The method is long and laborious, but the notches will further ensure good adhesion of the tile to the wall. In addition, the risk of injury is minimal, and there is almost no dust, which is important for a room with a small area.

The brush produces a lot of fine dust, and the chain beats off the paint in pieces. When using a chain paint remover, the nozzle must be pressed well with a nut, and the rotation of the drill must be set to the left side. The nozzle is used until at least three links remain on it. When a link is knocked off on one side of the chain, then on the other side, for balance, it is also necessary to squeeze the link.

Removing paint with chemicals

Paint removers greatly simplify the process, but are not entirely safe. When working in a small bathroom, do not forget about rubber gloves and respiratory protection. In order not to be poisoned by toxic fumes, do not close the doors to the room.

Various paint converters and solvents contain caustic substances that will corrode the paint. Suitable for removing any paint. The essence of the procedure is simple. Apply the composition to the wall with a roller or brush. Movement is best done in one direction. The liquid has the appearance of a thick jelly and can cause burns if it comes into contact with the skin. And the smell of such a drug is not pleasant. After applying, we wait about half an hour, the paint will begin to wrinkle and swell. The dissolution time of the paint may be longer. We remove it with a spatula. If the coating is very old and durable, and even applied in several layers, it may be necessary to re-apply the drug. And do not forget to tightly close the solvent lid after work. We remove the remnants of the product with a stiff brush with progressive movements, and then rinse with water several times with the addition of calcium carbonate. The last flush is done with clean water.

If the adhesion of the paint to the base is weak, then you can try quicklime mortar 1.5 kg and 500 g of calcined salt. Apply this mixture to the wall with a brush, and after 12 hours remove with a spatula.
Liquid glass when dried, it creates a strong film on the paint and peels off well with it. The procedure is similar to the previous method.

Temperature method

You will need a building hair dryer or a blowtorch. First, try to heat and scrape off a small area with a spatula, the fact is that some paints adhere even more strongly to the concrete surface when heated. Remove the swollen paint immediately, otherwise you can’t tear it off with your teeth, as they say. Thermal removal is highly toxic and there is a risk of fire. Observe all safety precautions.

Now you know everything about how to remove paint from a wall. It is easier and faster to do this with a grinder, and prepare the wall for tiling with a perforator. Use the method that suits you best.

How to remove paint from a wall: video

Removing paint from bathroom walls

Repair of premises, and especially bathrooms, decorated according to Soviet standards, often becomes quite problematic. To lay a new tile with high quality, it is necessary to remove the old coating - paint. Based on the peculiarities of the repair in Soviet times, the question arises: “how to remove paint from the walls in the bathroom”? It is very difficult to clean the surface in such situations, since the coloring agent was applied directly to the concrete coating.

Nowadays masters are great inventors. They use various tools in the fight against paint: a grinder, a gas burner, a building hair dryer, a perforator, a spatula, scrapers, knives, etc.

The process of cleaning the surface of the walls is impossible without noise, dust, unpleasant odors. It will also require a lot of effort and time to implement. In order to choose the best option for removing paint, it is necessary to evaluate both the positive and negative sides of each approach.

Quiet cleaning methods

Before proceeding with the repair work in the bathroom, it is necessary to prepare the room. First of all, you should clean the walls of paint. This substance is associated with acetone and solvent. This approach, although silent, will still bring great discomfort not only to the owners of the apartment, but also to the neighbors. This is all because it is accompanied by an unpleasant poisonous odor. Despite this, solvents are often powerless against old coatings. It will be possible to cope with it with a scraper, a hard brush, a brush. In this case, it will be necessary to additionally moisten the surface with a solvent agent, protecting hands and face with gloves and a mask.

Another way to clean the surface of paint is burning. The main "tool" in the struggle is fire. Despite its quietness, it is characterized by such shortcomings, namely dangerous secretions, a terrible smell, special skills and skills in working with a fire source.

The burning method is effective, but inefficient, because the result is a surface of unsatisfactory quality. She will directly leave her imprint on further finishing work. The method of burning paint is the most unsafe approach.

"Environmentally friendly" ways

The mechanical method is also used to clean the walls from paint. It consists in using a spatula or other improvised means to peel off the old coating. This approach is the most effective, as it is possible to clean even hard-to-reach places. The advantages of this method include: the minimum amount of dust, noise, the ability to process all parts of the surface, the absence of additional costs for chemicals, electricity, and does not require the involvement and purchase of various tools. The mechanical approach to how to remove paint from the walls in the bathroom is quite simple and straightforward, since it does not require special knowledge and skills.

Despite the presented number of positive aspects, the following disadvantages are distinguished: it takes a lot of time, is characterized by prolonged muscular work, monotony.

A more interesting and entertaining approach to cleaning the surface can be called the "old-fashioned way". His main tool is an axe. This method is characterized by high efficiency, significant physical costs, high speed.

The process of cleaning walls from paint with an ax is as follows: notches are applied to the surface due to the sharp edge of the working tool. Thanks to this procedure, the paint is artificially swollen. To remove such neoplasms, movements are performed from top to bottom, but the ax must be sharp. This approach is most effective if the paint has been applied to the plaster.

The "axe" method on the positive side is characterized by the following:

High level of efficiency.
Small amount of dust and noise.
No need for energy costs and the purchase of chemicals.
Ideal for surface preparation for subsequent processing.

Has this approach and disadvantages:

Required to perform great physical effort.
The need for skills and abilities to work with this tool.
It is difficult to remove paint from a concrete coating, as well as from a thin layer of primer.

A grinder and a puncher have a high surface cleaning speed. Thanks to these tools, it will be possible to remove paint from the walls in a matter of time. Cleaning measures are carried out by translational movements in the longitudinal direction. The hallmark of this approach is dirt.

The method using a grinder and a puncher is characterized by the following sides:

It takes little time to clean the surface of the walls.
Minor physical activity, subject to experience with the tool.
As a result of paint cleaning, a large amount of dust and debris is generated.
High noise level.
Inability to work in hard-to-reach places.
The need for the use of protective equipment: gloves, a respirator, a cap for hair.
In the process of applying this method, it is necessary to observe safety precautions.
It is the most effective way when compared with others. This is justified by the ability to clean paint even from concrete.

Before you remove paint from bathroom walls, you need to familiarize yourself with the different types of paint. But despite this, the complexity of the surface treatment of oil types is significantly different from the cleaning of coloring emulsions, which are created on a water basis.

Features of removing a water-based helmet

Water-based paint is a solution that is based on water. Despite this, it will no longer be possible to remove it after drying with a liquid. For rooms such as the bathroom and kitchen, it is customary to use a special type of paint, which has a high level of resistance to the aquatic environment.

Thanks to the ingenuity and resourcefulness of the masters, there are the following features for removing this type of paint:

If you moisten the surface well with warm water, then after a while the paint will absorb moisture and swell a little. After that, a spatula will come to the rescue.
For the convenience of soaking surfaces, it is recommended to use a large roller. It will be most useful for ceilings.
In parallel with drying, the cleaning efficiency of the surface also deteriorates. For everything to go well, it is necessary to constantly maintain an optimal level of humidity.
In the process of removing paint, the floor covering is very dirty. To avoid the problem and extra work, it is recommended to cover the floor. As a cover, you can take either newspapers or plastic wrap.

When surface wetting is an ineffective method, then a spatula is replaced. An excellent alternative to this tool is a grinder. It does a great job, but it creates a lot of dust. With this approach, one should not forget about protection measures. In order not to harm yourself, it is recommended to use gloves, a respirator, goggles, etc.

If the walls are covered with a thick layer of waterproof paint, then a building hair dryer or a blowtorch will act as a working tool.

Among the different types of wall coverings and types of water-based paint, there is a universal approach to surface cleaning. It consists of the following:

First you need to prepare a special solution called a paste. It consists of PVA glue, which differs in the level of consistency, or it is a conventional type of wallpaper glue.
Next, it is the turn of applying this solution to the surface and simultaneously gluing newspapers to it.
To remove the paint, you need to wait for the glue to dry completely, and then rip off the newspapers. In the process of their removal, the coloring matter from the walls should also disappear.

In addition to the above methods for removing paint from surfaces, other approaches to solving such a task work effectively and are widely used.

Destroyer. It is a product that is made according to the instructions on the package. The resulting gelatinous mass is intended to cover the surface, which works as a solvent. Such a process is quite lengthy.
Iodine solution. This substance is used as a softener. It is prepared by diluting 200 ml of iodine in one bucket of liquid.
Ready washes. According to the wishes of customers, construction stores are engaged in the sale of ready-made solutions. They are prepared according to the recommendations that are indicated in the instructions. Ready-made washes work after applying them to the surface, then it is the turn of the so-called dissolution of the paint and its subsequent washing with water.
soap solution. It is a thick foam that works as a softener. After applying the substance to the surface, the paint is exposed and it is possible to remove it with a rag. The soap solution consists of the following ingredients: salicylic acid or vodka is used to combat acrylic additives; in the presence of latex impurities, dichloroethane or chloroform takes place.

Thus, when the question arises "how to clean the paint from the walls in the bathroom", then first you need to familiarize yourself with the various ways to remove paint from surfaces. Each method is acceptable for a particular case. You can clean the walls both on your own and involve the masters.

Removing paint from walls can be a daunting task. Relatively rarely, the paint is removed very easily. In the majority of cases have to work hard and solve a few problems.

Unfortunately, until now, construction machinery has not replenished with a universal machine for cleaning old paint.

And this is unlikely to happen, since construction and finishing technologies have changed a lot. That's why have to use the old ways. In this article, we will look at the main ways to remove old paint in the bathroom, in the kitchen and any other premises.

When is this procedure needed?

It depends on the type of repair. If you want to plaster surfaces or repaint them, as well as paste wallpaper, then removing the old paint required in all these cases..

There are times when the old paint looks captivatingly durable and the owners paste wallpaper on it. However, in this case, the chances are very high that the drying glue, along with the mass of wallpaper that hangs on it, find hidden bubbles where the paint does not hold well or does not hold at all.

it will immediately affect the wallpaper itself, which will greatly upset the owners who have spent a lot of money on repairs.

If you are paneling a wall or ceiling, then you can leave the paint on.

Ways

In order to clean surfaces from old paint, there are many ways, and which of them is the best for each specific case, depends on the nature of both the paint itself and the material walls.

Burnout

This way is fast and efficient, but unfortunately not always applicable.

Its essence is that one worker heats a section of the wall or ceiling with a powerful gas burner until the paint darkens, and the second immediately after that quickly cleans the darkened area sharp metal spatula.

Respiratory organs of workers must be protected by gas masks. Old paints can contain powerful carcinogens.

To avoid fire, it is prohibited in this way clean wood surfaces. You can burn any paint with organic binders.

With solvents

The chemical method is suitable for:

acrylic paints;
glyphthalic;
pentaphthalic;
nitro;
for some types of polymer paints.

The hardest thing is to remove the old oil paint in this way. Washing starts from the top, wetting the surface with a swab or roller. After a few hours, the swollen paint is scraped off with a spatula.

This way belongs to the most dangerous– may lead to an explosion of solvent vapours. Work without gas masks and effective ventilation is prohibited.

Special mixtures (washes)

In this case, a special tool is used. Taking into account the previous one (see the section on solvents), chemists have developed a combined method, when the organic-based paint binder exposed to strong alkali with the addition of solvents.

it leads to a decrease in vapor concentration solvents in the air, and due to the fact that the alkali loosens the old paint, the solvent quickly penetrates into the depth and acts additionally.

Swollen paint clean using a scraper and wash the surface: first with acidified water (vinegar, citric acid, weak hydrochloric acid 1-2%), and then lightly rubbed with P-646 solvent.

Bulgarian or perforator

A very effective and versatile way to remove paint. Suitable for all paints and surfaces, limited to wood. Woodwork requires great skill, because it can easily damage the surface.

As a tool, a crown brush or a special brick crown (milling cutter) is used. There are also chains, but this is a very dangerous way - if a link flies off, then it can seriously injure the worker or those who are nearby.

The disadvantages of the mechanical method include very a large amount of toxic dust, therefore, it is necessary to work, at a minimum, with a respirator and goggles, as well as perform continuous exhaust ventilation.

Now on the market began to appear special tools for cleaning old paint, but they are quite rare.

Spatula or chisel

Least productive, but the cleanest method. Ideal, or better to say, indispensable, when working near sockets, wiring, pipes, in corners, near skirting boards, as well as on wooden surfaces.

A spatula removes layers of paint that do not adhere well to the surface, and a chisel helps in those places where the paint is held firmly. For this cleaning method, it is useful to have emery on hand, for sharpening tools that dull quickly on stone surfaces.

Ax and water

This method is one of the simplest and completely safe. Its only drawback is that it requires significant muscle strength. Although each blow with an ax requires little effort, however, thousands of such blows must be made and untrained hands will quickly get tired.

Small but closely spaced notches are applied with an ax, between which the paint cracks and falls off. Water is used to reduce dust, as a result, dust is completely absent. This surface preparation is very well suited for subsequent plastering.

With a hair dryer

This method is similar to the burning method. But here the paint is heated at a lower temperature than an open flame gives, heating acts more locally, due to the nozzle of a hair dryer and this method can sometimes be one of the best.

Less harmful substances are released, but they should not be forgotten in any case. And use either frequent ventilation or a gas mask.

The layer of intumescent paint is removed with a spatula. Then the surface is washed, clean up minor defects and wipe with a swab with a small amount of solvent.

How to choose the right method?

Choosing a method for cleaning walls from old paint should be, based on several considerations:

wall material;
type of old paint;
ventilation options;
agreement with neighbors about noise, work time, etc.;
available tools;
available budget.

This sign will also help:

X - chem. M - mechanical. T - thermal. cleaning methods.

When choosing a cleaning method, priority should be given to work safety for people, because lost health cannot be returned for any money, and work with paint, especially unprofessional, can be very harmful.

Getting rid of old whitewash

It's no secret that 15-20 years ago the favorite finishing materials of all builders were paint and paper wallpaper. Especially often you can find painted walls in the bathroom and toilet, in the kitchen or in the hallway. Builders with a creative approach to business often decorated the walls with flowers and boats.

Unfortunately, such a print ceases to touch when it becomes necessary to get rid of it. It's one thing when the old paint is already peeled off and can be easily removed with a usually spatula. And it’s quite another when there are several layers, they are applied conscientiously and hold on with enviable strength. Assuming the severity of future work, many give up and the thought creeps in: “maybe it’s him?”.

We hasten to please you - in some cases, the old paint is really not an obstacle for further finishing work. It all depends on their type:

For example, if we are talking about a bathroom where there is a need to level the plane of the walls for further laying of facing tiles, you can simplify the task with the help of drywall. Some walls are so curved and have such pronounced drops that sometimes it is actually faster and even more economical to level them with drywall fixed to the profiles than with plaster. Plus, you get a surface with excellent adhesive performance;
To fix plastic or other wall panels, lining, old paint will also not become an obstacle;
If you plan to repaint and the surface of the walls allows you to do without their alignment, you can apply a layer of a new coating on top of the old one. Provided that it does not swell, does not peel off, holds firmly and does not have cracks. In some cases, individual areas of peeling paint can be removed, and the resulting unevenness can be filled with finishing plaster. But please note this paragraph applies only to situations where applied acrylic paint on old acrylic, or enamel paint on old oil. In the case of applying acrylic or water-based paint on old enamel, these compositions simply will not “lie down” on a glossy surface. It is possible that when applying it, it will seem to you that the paint is still evenly distributed on the surface and everything worked out, but after drying you will find separate islands of a new color that are interconnected by thin cobwebs;
They will allow you to avoid the need for an old coating before tiling the walls and modern tools. For example, a primer called "concrete-contact" and other interpretations of the name with a similar meaning promise good adhesion after drying, even with a completely smooth surface. Even glass appears on the list, and on the Internet you can find a lot of video evidence.
If you plan to apply wet plaster and other compounds, such as wallpaper paste, to the walls, for example, paint must be removed. Plaster just won't "stick" to a smooth surface. The paint has a minimal ability to absorb liquid, so the usual primer simply cannot penetrate its structure and ensure adhesion. And under the weight of heavy wallpaper sheets impregnated with glue, the paint can simply move away along with the freshly glued wallpaper. Even if at first glance, it seems that she is holding tightly.

For work you will need:

spray gun, roller or sponge;
respirator, goggles;
spatula narrow and wide;
scraper;
a bucket of warm water;
wallpaper remover.

Different types of wallpaper differ in properties and quality, so they require a different approach when cleaning walls from old wallpaper.

A waterproof layer of non-woven or washable wallpaper will not allow water to soften them so easily, so you need to break its integrity by making cuts and notches, and then moisten it with plenty of water with a sponge. After the glue dissolves, the wallpaper easily moves away from the walls.

When removed, vinyl wallpaper does not tear into pieces, but lags behind the wall in whole strips. If a part of the paper base remains on the wall, it can be easily removed by moistening it with water and prying it with a spatula.

Liquid wallpaper can be removed with a spatula, having previously treated them with water with the addition of a primer. If removing wallpaper by hand is difficult, you will need a sander with an abrasive nozzle.

The most difficult thing is to remove oil paint from a concrete surface. But even with such a difficult task, you can cope if you have at hand all the necessary tools and means. Can be used:

grinder with a nozzle;
spatulas, chisels, scrapers;
puncher or electric drill with a nozzle;
paint thinners;
axe;
construction dryer.

There are three ways to clean walls from old paint, each of which has its pros and cons.

Mechanical

The mechanical method is the most dusty, but the least toxic compared to the next two. You can remove the paint manually: beat off individual sections of the surface with an ax or a hammer with a chisel. If you choose the right angle of inclination of the ax, the paint will be easily removed.

When working with a grinder there will be a lot of dust, so it is better to use a hammer drill or a drill with a chain attachment. The tool with chain links knocks down the paint, which flies off in pieces and does not dust.

Old whitewash can be removed in two ways - dry and wet.

You will need:

respirator;
Sander.

A lot of dust during operation is a significant disadvantage of this method. All furniture must be taken out of the room or wrapped in a protective film. The advantage is that the grinder will quickly clean the walls of whitewash without damaging them.

wet way

Tools needed to remove whitewash:

putty knife;
bucket with water;
sponge;
brush.

In this case, the old whitewash will need to be washed out by wetting the walls with plenty of water with a sponge. The whitewash that has become pliable is removed with a spatula, and the remaining places are treated with a brush and washed off with water to the ground.

Beating old plaster with a spatula or hammer. If it does not move well, use a grinder, puncher or a special machine with abrasive discs. Before this, the wall should be moistened with water so that there is less dust.

Removing paint from walls or metal surfaces, as well as removing rust, requires a lot of effort and a lot of time. Therefore, sometimes it is impossible to do without the use of power tools. As a device to facilitate the process, you can use an angle grinder (grinder) with special cleaning nozzles.

Old paint most often has to be removed either from walls or from metal surfaces. In each case, different types of nozzles for grinders are used.

For peeling work on metal, whether it is removing a layer of old paint or removing rust, craftsmen use brushes
. They look like a brush of metal twisted or not twisted wire inserted into a metal cup, or a disk of the same wire.

Depending on the quality of peeling work you want to carry out, the thickness and stiffness of the brushes are selected. It should be taken into account the fact that the metal wire used in the brushes leaves scratches on the treated surface.
. Therefore, to remove paint, for example, from a car body, it is better not to use them. They can only be useful for removing rust and paintwork from hard-to-reach places.

For metal-friendly roughing
it is better to use special wheels made of silicone carbide fibers (XCS) - they are usually black. Also for these purposes, more wear-resistant Clean and Strip discs are used. They are blue in color, have a similar structure, but consist of nylon threads.

This cleaning wheel is available in 2 versions: for a drill and for a grinder. Its distinctive feature from other types of nozzles for removing paint from metal is that it does not clog and does not damage the metal in the form of scratches. They also successfully remove welding spatter, rust, various sealants and anti-corrosion coatings.

Often, petal nozzles are used to remove paint from metal.
for Bulgarian. They are a disk with sandpaper glued on its surface in the form of petals.

For rough surface treatment, nozzles with a large grain size are used. For finishing work, it is necessary to select a roughing wheel with fine sandpaper. Although this sanding disc wears out quickly and becomes clogged with the remnants of peeled paint, it can be restored quite simply. How this is done, you can understand from this video.

From the walls

First of all, to remove the paint from the wall, the craftsmen try to use brushes with thick twisted wire (were discussed above). This method is quite effective, but a lot of dust is generated during peeling.
. Therefore, it is necessary to use protective equipment (goggles, respirator). It is also recommended to use a vacuum cleaner with a special nozzle that completely hides the brush.

Cup-shaped nozzles are also used to remove paint from concrete walls.
. The grinder must be held at such an angle that the paint layer is removed, but the tool does not sink into the wall.

In addition to peeling work, this nozzle is also used for leveling surfaces, removing various sags on the wall, for removing plaster, putty, etc.

Removing old paint by hand from a wooden surface

Before painting any surface, it is necessary to carry out preliminary preparation. It includes removing dirt, cobwebs, insects from the surface, as well as removing paint, sanding (for wood surfaces) and puttying.

The most important step is the removal of the surface coating. The left old paint contributes to the appearance of cracks, flaking of the new coating, and a violation of the aesthetic appearance. Consider the most common paint removal methods that you can use on the farm:

thermal;
chemical;
mechanical.

The use of one of the methods depends on the type of paint applied, as well as on the material of the surface to be cleaned.

thermal method

The most effective method for cleaning wooden surfaces from paint and varnish is the heat treatment method. With the help of a building hair dryer or burner, the old surface is heated to the melting point. The paint softens and peels off, after which it is easily peeled off with a hand trowel. The advantage of this method is that even thick layers of paint can be stripped quickly and efficiently.

The processing method is only suitable for wood, and in some cases for metal. It is ineffective for plastic, the latter begins to melt and deform at high temperatures. This method is of little use for the treatment of painted concrete, stone or plastered surfaces. A significant drawback is the release of volatile toxic substances when the paint is heated.

Chemical way to remove paint

You can also remove old paint with special tools, which include chemical solvents. They are produced for the removal of a specific coating and are based on acids, alkalis and organic polar substances, such as acetone or gasoline. There are also solvents with a universal composition, but their effectiveness is lower.

After applying the solvent to the surface, it must be left for 15-60 minutes. The time depends on the type of old paint and the thickness of the applied layer. The required time of contact with the surface must be indicated on the packaging. During this time, the old paint will begin to soften and can be easily removed with a hand trowel.

The chemical method is suitable for cleaning most surfaces:

tree;
metal;
plastic and linoleum;
MDF and glass.

The method of removing paint by mechanical action

Mechanical paint stripping methods include cleaning with hand or power tools. The most common tool for removing paint from large surfaces is a grinder or an angle grinder (angle grinder). If a grinder is used, instead of a disk, a special wire brush (brushing) is fixed on it. You can also use a drill with a metal nozzle. This method is suitable for stripping wood and metal from oil paints.

To clean concrete, stone, plastered walls from water-based paints, surface grinders with coarse-grained sandpaper, with a grain size of 250-600 microns, are used.

The manual method of removing paint with a spatula or scrapers is also referred to as mechanical methods. This process is quite long and laborious, but the most affordable. Removing the paint by hand will not give you a completely clean surface, so use it in combination with other methods, or at the stage of completion of preparatory work. The advantage of the manual method is the ability to remove any paintwork.

Everyone who has ever encountered a problem knows how laborious it is to prepare the surface for subsequent finishing. It is especially difficult to remove the coating if the paint was applied in a thin layer, a quality material was used. As a rule, this stage takes place in the most protracted mode, since the dismantling of the old one does not make fundamental changes in the room and is difficult to perceive as a repair.

One of the most common questions asked when performing cosmetic repairs is what and how best to remove the paint. There are many techniques to choose from based on what paint was used, what surface it was applied to, and what kind of finish will be applied to the treated surface.

If the next step after processing is to cover the surface again with paint, then you should decide. Should it be removed in whole or in part.

Previously, the main paint for repairs was oil. If with such a paint composition the wall surface remains even, has no chips or cracks with bubbles, the next coat of paint can be applied over the old one. If there is damage to the surface in the form of a peeled off old layer, then partially, where the paint began to fly around, it must be removed.

Although all modern paints, regardless of what basis they are produced on, whether it is water-based or acrylic or silicone, have a high adhesion. But for any composition, an important condition is the presence of a flat surface. Therefore, if the wall is not even and is to be puttied, the old paint must be removed completely.

This is due to the fact that the putty has a low adhesion to paints and varnishes and can come off with subsequent layers. Oil-based paints are the hardest to peel off. The fewer layers were applied, the more difficult it is to get rid of it. A thick layer clears faster.

Tools

To carry out paint removal work, you may need the following tools and tools:

protective equipment for the skin of hands, face, eyes. It can be rubber gloves, construction glasses, a face mask;
knife, pointed spatula or chisel;
building hair dryer or blowtorch;
liquid with a special chemical composition for removing paint;
brush;
perforator or drill;

Paint removal methods

When choosing the most optimal method for removing paint, you should first of all consider from which surface it will be removed. For example, the thermal method is ineffective if the paint has been applied to putty or concrete.

There are three methods for removing paintwork. These are mechanical, thermal and chemical methods. It is possible to use each of them independently, without resorting to the services of specialists. In the photo you can see how to remove the old paint, depending on the method chosen.

mechanical method

The advantage of this method is the absence of toxicity during processing. It is good to use in closed spaces that are difficult to ventilate. For example, in the bathroom, kitchen. It can be used if there are children, pregnant women, pensioners in the apartment during the repair.

When choosing this method, you must first decide on the tools available at home. If special power tools are not available, then work can be done using conventional tools.

One of the most common and proven over the years manual processing methods is the method using an ax and water. This method is suitable for removing old paint with your own hands from walls, door jambs, doors.

With an ax, serifs are made in the course of applying the paint. Further, the wall is abundantly wetted with water. Within 10 minutes, water soaks into the space formed after the serifs, forming a small porosity for air to penetrate under the paint, to facilitate its removal.

At the end, with quick movements from top to bottom, it is cleaned off with an ax. The chisel is suitable in narrow areas or those requiring the greatest care, for example, in the area of \u200b\u200bwiring, sockets.

Work can be done with a hammer and chisel. The scheme consists of hammer blows on a chisel, which is attached to the wall.

The mechanical method is the most economical and spends the greatest amount of physical effort and time.

To remove paint from the surface of the walls, for example, in the bathroom, you can use a drill or grinder. For these works it is better to have special nozzles. If they are not, then it is worth preparing for the fact that the whole room will be instantly covered in dust in the air. The most convenient nozzle is considered a grinding wheel.

Paint is best removed from concrete with a drill. For her, special nozzles are supplied for such work. The best paint remover is considered to be in the form of several interconnected chains.

chemical method

The chemical method will help to quickly remove the paint. A special solvent is used to carry out the work. It must be applied to the surface and allowed to soak for 15-20 minutes. After this time, repeat the procedure several times.

As a result, the paint will soften and can be easily removed with a few strokes of the spatula. The chemical method is more suitable for a surface that was painted no more than two years ago.

It should be remembered that the area of penetration of evaporation from the solvent is very large. Such a method may not be harmless not only for the workers themselves, but also for the residents of neighboring apartments.

thermal method

This method is ideal for removing paint from floors. To carry out the work, a building hair dryer will be needed. This method is most effective for removing old paint from wood.

The technology is very simple. It is necessary to direct a hot stream of air to the surface area to be treated and wait until the paint begins to swell. Finally, clean the resulting mass with a conventional spatula.