The best ways to remove oil paint from walls. How and how to remove or remove old paint How to remove old paint from a fence

Repairs in Soviet-style apartments often involve the removal of old paint, mostly oil paint. Yes, and it can be very difficult to remove a water emulsion that has been diligently kept for years. Plus, the surface can be different, because, in Soviet times, absolutely everything was painted - concrete, wood, plaster and even tiles ...

Why remove old paint

Is it worth taking old paint depends on what kind of finish is planned for this surface. If the owners want to paint the wall or stick wallpaper, lay ceramic tiles or apply decorative plaster, then the layer of old paintwork must be removed. Otherwise fine finish it just starts to fall off over time. And if the walls are, for example, sheathed with plastic or drywall using lathing, then there is no need to remove the old paint.

Why remove old paint from the wall if, for example, plaster is to be applied? After all, it is possible to cover the wall with a primer and plaster? But everything is not so simple: the old paint does not have adhesion (adhesion to the applied material), which means that no coating applied to the painted surface will be durable. And if you also take into account that bacteria and fungus have accumulated on the surface over the years, and it is planned to live indoors with children or the elderly, then you definitely cannot do without removing the old paint.

How to remove paint: the choice of method and tool

In the world of repair, there is no specific and universal way to remove old paint: the choice will depend on many factors:

What specific surface was painted (wood, concrete or plaster walls);
Type of paint - acrylic, oil, water-based or water-dispersion;
Planned financial and time costs;
Available tool (and growing hands correctly).

So, what kind of paint should be removed? If you do not take into account modern materials, for example, based on acrylic or latex, then most often you have to deal with the following types of coatings:

paint based vegetable oils or drying oils (oil);
Water emulsion;
Water-dispersion.

Depending on the type of paint and choose a method and tool. If the type of coating cannot be determined, then you will have to experiment with different methods, which will take a lot of time.

How to remove old oil paint

Subject to coloring different surfaces, which have different properties, most often these are:

Concrete base (walls or floors);
Metal;
Wooden surfaces;
Plaster;
Drywall.

Oil paint does not have any adhesion to any mixtures and glue, so it is recommended to remove it in any case. Concrete bases are the most difficult to clean from oil paint. But with the tools and skillful hands everything is possible!

We will consider the following methods for removing old paint:

Mechanical - not the easiest, but more or less safe.
Thermal - for it you will need a special construction tool.
Chemical - the most unsafe in terms of the chemicals used.

What may be needed to remove old paint on oil based from a concrete base?

Perhaps, it belongs to the most budgetary and affordable for any way of cleaning a concrete surface from paint, but also to the most time-consuming. The paintwork is scraped off the surface either with a spatula or other sharp tool (such as an ax or chisel). To facilitate the task, small notches are made on the concrete surface, and then everything is wetted with water. When concrete base get a little wet, you can start scraping off the paint.

It is worth noting that since no chemicals are used with this method, it is the safest for health, however, you still have to wear goggles and a respirator.

Mechanical paint removal is perfect for small walls and for unventilated rooms. But the processing of large surfaces will take a lot of time, and it may be worth paying attention to another mechanical method - sandblasting fine abrasive. Suitable for old walls and wooden surfaces. The paintwork is knocked off with a jet of air and fine-grained sand (or soda). The method is not cheap, it requires a professional approach and the availability of special equipment, so our craftsmen rarely use it.

Often, a grinder with a special nozzle is also used, with which the surface with paint is processed. However, this method is the dustiest and dirtiest of all, and the effectiveness is controversial.

Removing oil paint using thermal treatment

For this method, you will need a special tool - a building hair dryer, which, by the way, is not available in every home. The difference between a building hair dryer and a regular hair dryer is that the blown air flow is much stronger and hotter. It is under the action of high temperature that the paint begins to “melt” and move away from the base. After softening the paint, it can be scraped off with the same spatula or scraper.

By the way, you can also remove old paint with a building hair dryer from wooden surfaces, for example, from old interior doors Soviet sample.

Another thermal method from Russian craftsmen: cover the wall with foil and “pass” with a hot iron.

The thermal method of removing paint has its own “contraindications”: it cannot be used if there are elements that can melt (for example, plastic) or electrical wiring. In addition, the pungent odor released when the oil paint is heated makes it necessary to use these methods in well-ventilated areas.

Chemical way to remove old paint

The name of this removal method speaks for itself: the old coating is removed from the surface using a special chemical agent either store-bought or homemade.

Attention! This is the healthiest way to remove paintwork, as all chemical substances are poisonous and should only be used in a well-ventilated area and with personal protective equipment.

It should also be noted that this method is one of the most effective, but expensive, and stripped paint will have to be disposed of in a special way.

To remove old oil paint, several layers of paint are applied to the surface. special agent with a brush or roller, and then removed with a spatula or scraper.

Paint remover can be purchased from hardware store, but you can also use other, "home" methods:

A solution of water, lime and potassium carbonate. Mix 2 parts lime and 1/3 part soda ash, dilute them in a small amount of water so that a pasty consistency is obtained. Then a similar solution is applied in a thick layer on the surface for at least 12 hours, after which the softened paint is removed quite easily.
Treating a wooden floor with baking soda. This method is only suitable for an old wooden floor: wet the surface, pour a layer of soda ash, cover with burlap and moisten again with plenty of water. Leave in this form for a day, during this time periodically wetting the burlap. The swollen paint is then removed either with a scraper or a spatula.
Surface treatment with liquid glass. The method is also not cheap: liquid glass it is simply applied to the wall, and after drying it forms a film that is removed along with the paint. But you need to purchase such a tool in the store and it removes only one layer.

Whichever method you choose, do not forget about personal protective equipment: rubber gloves, a protective suit, a respirator (or gas mask), goggles.

Removal of water-based paint

Water emulsion is one of the few types of paint that are perfectly washed off with water, of course, not without effort.

In order for the paint to “leave” well from the wall, the surface is first wetted with water and left for 10 minutes. When the coating absorbs all the moisture, the old water-based emulsion is easily removed with a metal spatula.

At first glance, it can be difficult to determine that the wall is painted with water-based paint, but if you run a damp sponge over it, the traces of paint will speak for themselves.

How to remove water-dispersion paint

The water-dispersion composition is more resistant to moisture, and, therefore, it is more difficult to rub off with ordinary water. But even in this difficult matter, there are three ways to remove water emulsion from the walls:

With water and a sponge;
mechanically;
With the help of pasting with newspapers.

With the help of water and draft

This method cannot be classified as effective, it all depends on the quality of the paint itself, and most manufacturers of paint and varnish coatings claim resistance to wet cleaning. But, nevertheless, it is worth trying to soak the water-dispersion paint on the wall.

To do this, it is abundantly applied to the surface warm water, after 10 minutes the procedure is repeated. After the water is completely absorbed, you need to open all windows and doors to organize a good draft. By the way, you can also use a fan by directing a forced stream of air to the surface. Blisted paint can be removed either with a roller or with a brush.

Mechanical method and with the help of newspapers

One of the old but very effective ways removing water-dispersion paint is pasting the wall with newspapers. After the glue dries, the newspapers are removed, often along with a layer of paint. And unyielding places are easily processed with a spatula or sandpaper with a large grain.

The mechanical method is much more dusty and sometimes turns out to be ineffective - this is the use of a grinder with a wide range. However, this method is the dirtiest and dustiest, and after literally a minute of work, you will have to wait another half hour for the dust to settle. You can also clean the surface of the old water-based emulsion using a perforator with special abrasive nozzles.

How to remove acrylic paint?

Acrylic paint is a modern acrylic-based paint and varnish material that is easy to apply to walls, dries quickly and practically does not smell. The paint is considered one of the modern ones and is easier to remove than oil or resistant water-dispersion paint. For removal acrylic paint You can use coarse sandpaper or metal brush. If the paint is good and resistant, then you can resort to the methods described above for oil paint. However, if the painted surface is again covered with acrylic paint, then there is no need to clean it: good adhesion of acrylic paint to a similar one is one of the advantages of this decorative product.

Whatever type of paint stripping you choose, remember to wear personal protective equipment and do not work in poorly ventilated areas. Always follow the instructions on the packaging of the product or tool being used.

How to remove old paint from metal? This question arises when the previous decorative layer becomes unusable. The coating may break down different reasons, but the main factor is the constant contact of the surface with oxygen. Delete old layer can be done in various ways, but the method should take into account the specific situation and not take much time.

The removal of a worn out or outdated protective and decorative layer can be carried out in various ways, during which certain materials and tools will be involved. The following options are considered the most popular and effective:

The use of improvised heating devices. Thermal exposure allows you to quickly remove the old composition, but may adversely affect the surface. For work, a building hair dryer, blowtorch or gas burner is used. If necessary, parts can be immersed in a furnace or fire.

Removing paint using thermal action is a laborious process, the speed of work depends on the heating device and the thickness of the metal layer: the thicker, the longer it takes to clean

Important! Many decorative compositions have good combustibility even after complete drying, which can lead to bad consequences. Also, this method is not suitable in cases where it is required to process a small area of a single structure.

Use of tools with abrasive nozzles. The mechanical method allows you to clean metal parts systematically, adjusting the load on the surface. This method is not always suitable for working with small or embossed elements. The process will take a very long time, but may be the only right decision. Among the devices used, sandpaper, grinding and polishing machine, grinder and brush attachments.
You can wash the metal base with your own hands using acetone and white spirit. But if the resulting film has good adhesion to the base, then this will not help. This option is a great addition to the previous method.
A quick result is achieved when using a special wash. Chemical method good in that it allows you to remove the paint in a short period of time, while even difficult areas are cleaned.

The use of any tool or material should be done with care, harm can be done not only to the metal, but also to health.

Thermal paint removal

This technology involves the use of available devices. The principle is that under the action of high temperatures the coating softens, after which it can be removed immediately. When using tools with an open flame, a burning effect is created, due to this the paint burns out, freeing the base for subsequent cleaning.

Work order:

The condition of the area to be cleaned is assessed. If the structure is easily removed, then it is better to dismantle it, this will allow the work to be performed more safely. If this is not possible, ensure that adjacent areas will not be exposed to high temperatures.
Everything superfluous is removed, if necessary, adjacent surfaces are protected. For this, asbestos plates can be used.
The item is thoroughly cleaned of dirt and dust, washed with water and dried.
The heater is being prepared. It is better to use a blow dryer, as it is much safer than a gas burner or a blowtorch. It is also necessary to have a metal brush and spatula. To avoid unpleasant consequences, protective equipment is provided: gloves, goggles, respirator.
Heating occurs evenly. Initially, a large area is captured so that the coating can be removed more easily, then individual zones are heated. As soon as the structure of the removed layer becomes noticeably softer, a spatula or brush is used.
For achievement best result all movements must be interconnected and consistent: heating - removal.
To completely remove residues, a solvent is used. The main thing is that the base should not be very hot.

This method is suitable when you want to clean the oil coloring composition. Work is best done on outdoors or in a well-ventilated area.

On a note! Heating batteries made of cast iron, brass and aluminum must not be subjected to heat treatment, as well as thin sheets and forged decorative elements, which are the details of the composition from other materials.

Abrasive cleaning

Drills, grinders, grinders. The choice of a suitable nozzle, which must have an abrasive coating, is very important. To work in hard-to-reach places and with small details it is better to use the manual method: sandpaper is used independently or installed on a special bar.

It happens that it does not take much time to remove paint from metal when using a mechanical method, when the surface has a large number of delamination and swelling as a result of exposure to rust. In this case, a spatula and a knife are used. The main thing is to subject the base to thorough cleaning and anti-corrosion treatment.

Process algorithm:

The place is being prepared, everything superfluous is being removed. As protection, a respirator, gloves and goggles are used.
Deletion starts from the selected area. It is better to move systematically, clearing the entire territory without passes.
Different types of tools and abrasives have different effects on the surface. If the paint is applied in a thick layer or is well absorbed, the process starts with the roughest products, then the nozzle is changed.
Due to the formation of dust and dirt, it is recommended to spray the treated area with water from a spray bottle. This method is suitable when using nozzles in the form of brushes, discs or petal circles.

Strong mechanical impact can damage the base, so the tools are used for rough cleaning. For parts that require gentle processing, the manual method is selected.

Chemical withdrawal

A simple but insecure way. The chemical option allows you to quickly and efficiently wash off water-based acrylic or other polymer composition, as well as organic paints. Various types of products are used for work. Aerosols have proven themselves well, with their help you can easily process the desired area.

Attention! If you want to clean brass or other decorative parts, they are pre-boiled in soapy water. Paint removal is done manually.

When working at home, it is advisable to take care of the health of others, animals and indoor plants. All procedures are carried out in a ventilated area with gloves, a respirator and goggles.

The technology is as follows:

The surface to be treated is well cleaned and washed, and after drying, degreased.
Adjacent areas are closed unnecessary items clean up.
The chemical agent is applied liberally and thoroughly. An aerosol or liquid formulation may be used for treatment. The second option requires a brush.
The product closes plastic wrap, this will improve the response.
Depending on the manufacturer's recommendation, after this, wait from 1 to 10 hours, and then remove the swollen layer with a spatula and brush.
The surface is immediately washed with a solvent and water, otherwise it is likely that the composition will damage the structure of the metal.

This tool is also suitable for cleaning powder paint, but it is better to choose more caustic compounds.

By doing various kinds repair, it becomes necessary to remove the old paintwork. If it has ceased to reliably serve and protect the surface, then it must be removed. The reason is simple - the new coating will not adhere securely to the surface.

In practice, the removal of old paint is performed in several ways:

by mechanical means. Scrapers, chisels, mechanical brushes mounted on an electric drill or grinder are used;
thermal way. The choice of devices is quite large: hair dryers, gas burners, blowtorches and other devices that can heat surface layer paints;
chemical dissolution of the old layer of paintwork.

When it becomes necessary to remove the old color within a short time, the chemical method is chosen. Washing off the old paint occurs due to its dissolution.

Criteria for choosing a solution for washing off the old coating

Used to paint various items. paints and varnishes on a different basis:

on water based water-based and water-dispersed dyes work, therefore, to wash them off, you will definitely need water in a fairly large amount;
oil-based paints are dissolved with hydrocarbon solvents;
nitro paints dissolve only with solvents in which acetone is present, an inhibitor (retarder) must be present as additional substances in the wash chemical reaction), which will reduce the volatility of the main solvent;
polymer-based can only be removed using strong alkalis or acids.

Each case requires its own type of solvent, which will destroy the internal bonds in the layer of the old coating.

Important! It should be remembered that washes only destroy the layer. For its complete removal, additional mechanical removal with spatulas, scrapers or other mechanical devices will be required.

The presence of various properties of dyes requires in each case to be approached with the use of a specific solution for removing paint and varnish.

Washer for water-based paint

Water-based layers after polymerization are quite dense, they can withstand the action of ordinary water. However, with an increase in temperature to 60 ... 70 ° C, swelling of the paint coating is noticeable in the aquatic environment.

In a dry state, it can withstand exposure even at higher temperatures (up to 130 ° C), in the presence of moisture, long polymer molecules break up into smaller fragments. Moisture itself penetrates the layer. Washing off the old paint begins.

It is even easier to remove the old layer with wallpaper paste (Fig. 1).

Rice. 1 Wallpaper glue for removing the water-based paint layer

It is bred in water.
Let it brew for about an hour.
Spread sheets of paper, such as newspapers.
Let the glue soak in.
Then newspapers with glue are applied to the walls, painted with water-based paint.
After half an hour, the entire surface swells.
The scraper easily removes newspapers and swollen water-based paint.

An excellent result is the use of a ready-made solution (Fig. 2). It is applied to the wall with a brush, maklovitsa or roller.

Rice. 2 Universal remover of old German-made paints "Gempel"

Attention! If this wash has been stored in the cold for a long time, then the solution separates. Restore it by heating to 60 ° C. Then you need to mix.

This material effectively removes not only water-based and dispersed coatings. It is used to remove oil paints.

Removing oil paints from concrete walls and metal

Excellent removal of old oil coatings produces "Su-30" (Fig. 3) it can be applied in any way. If it is necessary to process large areas, use an airbrush. After 30 ... 40 minutes, the old paint swells. Further work is reduced to its separation from the walls.

Rice. 3 Paint remover "Su-30"

Usually take a bucket and a scraper (spatula). The bucket is placed below to collect the removed layer, and the old coating is removed with a scraper and finally removed.

When working with metal, many people prefer INTERSTRIP paint stripper (Fig. 4). It is sold in buckets from 1 to 12 liters. When using, it is recommended to wear goggles, gloves, and also protect the respiratory system.

Rice. 4 Paint remover from metal "INTERSTRIP"

In 8…10 minutes after treatment of a metal object with a solution, the paint swells (Fig. 5). It remains only to remove it with a spatula.

Rice. 5 Removal of swollen coating

At the stations Maintenance associated with body repair cars are popular aerosol cans, which contain a spray (Fig. 6). The process is reduced to the following operations.

The surface is cleaned of dirt and oil stains.
The spray is sprayed from a distance of 300…400 mm.
It is expected that the old paint will swell within 10-15 minutes.
Spatula or other the right tool removed layer.
The surface is washed with water and wiped with a rag.

Rice. 7 Removing old paint from a car body

At enterprises where metal body products are painted, if defects are found in the manufactured products, the ABRO PR-600 universal washer is used (Fig. 8). It's also a spray. If there are internal spaces in welded or prefabricated parts, you can stick your hand in and machine the desired surface. Then it remains to wash off the residues or blow with air under pressure.

Rice. Universal washer "ABRO PR-600"

Washers for powder paints

Powder coatings are applied by spraying. Then the sprayed layer is melted. As a result, a monolithic coloring with a melted paint layer is obtained. It has no shells. At correct application coating, it can withstand the harmful effects of rain, cold, sunlight and other atmospheric influences.

Just soaking powder paint is quite difficult. Epoxy resins are used as binders. polyester resin. Plasticizers are added to give elasticity.

To wash off powder paints, the manufacturer KrasKO produces a special composition (Fig. 9) Antikras-P (in addition to the remover for powder paints, the universal Antikras remover and the Antikras-Facade facade paint remover are produced).

To use such a solution, it is applied with a brush. Small products are completely dipped into a container with a working mixture. It is also recommended to moisten a rag, and then apply it to the areas where the paint needs to be removed.

Rice. 9 Antikras-P

Attention! When using powder paints, a new coating can be applied over the old one. It is only necessary to monitor the presence of a structure-forming agent in the paints. If it is available in an old or new coating, then the shagreen effect will definitely appear at the moment the powder paint is melted in the oven.

Self-preparation of washes

At home, you can independently prepare solutions with which you can remove old paints. It is necessary to determine which dye was used, and then apply the desired solution.

Solution #1

To remove oil paints, these include alkyd paints(previously used thickly grated, mixed with drying oil) use a solution composed of two volume parts ammonia(Fig. 10) and one part of turpentine (Fig. 11). It is mixed, and then applied with a brush to the object from which you want to remove the old oil paint.

After about an hour, the coating swells, the old layer can be easily removed. The only drawback of this solution is a rather pungent smell. Therefore, work should be carried out outdoors.

Solution #2

It is easier to wash off metal using acids. Therefore, spent sulfuric acid (used in batteries) can be used to remove old paint. It should be diluted in a ratio of 1 to 10 with water. Then the solution is applied to the paint with a brush. Wash off with plenty of water, rubbing the surface with a brush.

Attention! Pouring acids into water. On the contrary, you can't! The solution will boil, and splashes will appear that can burn.

Mortar #3

Nitro enamels are removed with solvent No. 646. Pure acetone can be used. It is simply applied to the surface. If the coating is quite dense, then moisten a rag and apply it to the place where the paint needs to be removed.

General rules for removing old paint

The wash should be selected according to what paint the part is painted with. When using washes designed for wood on metals, you may not get the expected result.
When choosing a solution, one should not strive to use the most active ones. They quickly stop working. You have to remove the wash and reapply the next layer. Less active washes work slowly, but do not require the addition of fresh portions. A striking example is Antikras-P. It finally corrodes the old coating after a few hours, but removes completely.
With multi-layer coating different types paints will have to wash off the old layer in layers.
It is better to use gels. Or apply a rag soaked in a solution.
Personal protective equipment must be used even when working with "soft" washes. The resulting gases can affect vision as well as human breathing. Hands must be in fully rubberized gloves.

Video: Washing off old paint Antikras

When conducting repair work owners often face the problem of how to remove paint from the wall in the kitchen. Most of the difficulties arise with concrete surfaces covered with a layer of enamel. There are several ways to deal with the task, and in some cases this step can be skipped without compromising the quality of the new coating.

Removing old paint from the wall is necessary for repairs in the room.

When to remove old paint and why

The need to remove the paintwork from the kitchen wall is determined by the method of its further finishing. For example, for sheathing with drywall, plastic, laminate, etc., the painted surface will not interfere. It does not need to be cleaned even if the paint of the same type is reapplied.

The old paint layer must be removed in the following cases:

if it is multi-layered, swollen, cracked, flaking;
if the paint is oil, but it is planned to use water-based or acrylic;
if it is necessary to plaster the wall or level it with putty;
if wallpaper is used as a finish, ceramic tile, adhesive wall panels.

This is due to the fact that the painted surfaces are poorly wetted, have minimal adhesion and do not provide reliable adhesion to the new coating. This reduces the quality of work and does not guarantee the durability of the finish.

Do not cover the old oil layer with acrylic or water-based composition. Even if it will be applied well, after drying it will be found that the coating is uneven, spots of the original color appear in some places. The durability of such a finish would be questionable.

Sometimes compromises are allowed: partial removal of the layer before re-staining in places of peeling, notching or scratching the surface with a spatula, gluing a mesh, using a deep penetration adhesive primer.

They don't always give good result. It is better to immediately get rid of the old paint in the kitchen, so as not to encounter this problem during the next repair.

Necessary tools and materials

To get the job done you may need:

Tools needed to remove old paint from kitchen walls.

spatulas;
chisel with a hammer or hatchet;
metal brush;
sandpaper;
gas burner or technical hair dryer;
power tools: grinder, drill, puncher with suitable nozzles (brush, brick crown, etc.);
wash and devices for its application (brush, roller, rags, sprayer, etc.).

The process is associated with the formation of a large amount of debris and dust, so be sure to use a mask and goggles. Household gloves don't hurt either.

Paint removal methods

There are several options for removing paint. You can clean it mechanically, remove it with the help of chemicals or thermal exposure.

Chemical

This method involves the use of appropriate compositions (washes) to soften the layer, after which it is easily removed from the surface.

Advantages of the chemical method:

Suitable for various types of paints (powder, acrylic, latex, oil, alkyd, nitro enamels).
Saves time and effort.
Does not require special tools for application.
Does not damage the base.

You can remove the old paint from the walls with the help of chemicals.

Washes are available as a liquid, spray, gel, paste or water-miscible powder. Varieties:

designed to remove certain types of paint;
universal (not suitable for water emulsion, latex and acrylic);
express means (work as quickly as possible).

Some contain additives that slow down the evaporation of the solution from the surface, or oily components. After applying them, it is recommended to wash the wall, as they may reduce adhesion with a new coating or show spots on its surface.

It is required to take into account the causticity and toxicity of these products, you should take care of reliable ventilation of the kitchen. During work, children, pregnant women and pets must be removed from the apartment.

All manipulations must be carried out in protective clothing, goggles, a respirator, rubber gloves. The resulting waste requires special disposal.

The hardest part is removing the oil coating. If it has been applied repeatedly, it will have to be washed off in layers in several passes, which requires additional costs and takes a lot of time. With a fresh coating (up to 2 years), washes do well, but for an old oil layer they are practically useless.

Thermal

This method is based on the fact that under the influence of heat, the finish loses its adhesion to base surface, swells, becomes plastic and peels off easily. A small area of the coating is heated with a technical hair dryer, gas burner or blowtorch, after which the softened layer is immediately scraped off with a spatula.

A heat gun helps to effectively remove old paint from kitchen walls.

Disadvantages of this technique:

Not suitable for heat resistant enamels.
Requires appropriate equipment.
Cannot be used near gas pipe, flammable objects, objects that can be deformed from heat, near switches or sockets, in places where wiring is located.
The paint itself may catch fire. Some of its types, when heated, firmly stick to the surface.
There is a pungent smell, fumes are toxic. Proper ventilation and a respirator are essential.

You can try to remove a small thin layer by heating it with an iron through a sheet aluminum foil. But the resulting temperature may not be enough.

Mechanical

You can remove the paint layer manually or using a power tool. If the coating peels off well, it is scraped off with a sharpened spatula.

This is a long and laborious process. It is optimal for cleaning drywall, wooden surfaces, walls in hard-to-reach areas (at the baseboard, in the corner, around the outlet, behind the pipe, etc.). During operation, dust generation is minimal.

You can try to knock down the coating, wielding a chisel and a hammer. This method is used in those areas where the layer does not hold very firmly. The working area of the chisel is applied to the wall and tapped on the handle with a hammer. At the same time, the tool becomes dull rather quickly, therefore, it requires periodic sharpening, which is performed using sandpaper.

It can also remove paint. First of all, this applies to metal and wooden surfaces. First, the layer is treated with coarse paper, then finer. The use of an emery wheel for a drill or a grinder with a grain size of P40 and above will speed up the work.

Instead of a chisel, you can use a small hatchet:

The integrity of the reservoir is violated with the help of short blows, as a result of which small serifs are formed. They are arranged randomly with a small interval (up to 7 cm).
Abundantly moisturize the wall and leave for a few minutes to soak.
Sharp movements clean off the paint, directing the blade almost parallel to the wall. At this stage, you can use a spatula or chisel.

Manual methods require patience and physical endurance. In this case, you can chip the base or provoke shedding of plaster in the kitchen.

The use of power tools will be more convenient and productive. The grinder cleans the wall with high quality, but at the same time a thick dust curtain is formed, which greatly reduces visibility.

Therefore, you constantly have to take breaks, waiting for it to subside, due to which this method can be considered irrational.

Suitable drill bits:

sanding with Velcro sandpaper - ineffective, heats up, easy to wash;
brush - cleans well, but the process is not fast enough;
a brick crown with a drill removed - suitable for small areas remaining after applying other methods;
paint remover - a device of 3 chains, works efficiently and neatly enough, does not give dust.

You can remove old paint from the walls using a drill with a special nozzle.

A perforator with a chisel attachment completely removes the coating, but knocks out pieces of putty, plaster and even concrete. The clean-up router provides a complete cleaning, removing the base layer along with the paint.

Wash application technology

Work order:

To clear a surface of pollution.
Wearing protective equipment, apply the composition in a convenient way and cover with polyethylene. To treat large surfaces with a liquid wash, use a roller or spray gun.
Wait for the time specified in the instructions, remove the layer with a scraper. Then you can walk with a metal brush or sandpaper.
Re-treat non-exfoliated areas with a wash.
Wash the cleaned surface with detergent.

How to choose the right method?

The choice depends on the type of paint used, the thickness of the layer, the type of base, the availability of the necessary equipment and the possibility of acquiring it, as well as the amount of free time. The most difficult to get rid of the oil coating applied to unplastered concrete. brick and wooden base require careful handling.

Peculiarities different methods cleaning:

chemical - does not work on oil coatings, toxic, bad smell lasts a long time;
thermal - not suitable for all paints and surfaces, fire hazardous;
mechanical - the most versatile, but requires a lot of effort and time, dusty, leaves a large amount of debris.

It is often necessary to try several methods in order to determine the optimal one, and use a different approach for individual sites.

Removing old paint by hand from a wooden surface

Before painting any surface, preliminary training. It includes removing dirt, cobwebs, insects from the surface, as well as removing paint, sanding (for wood surfaces) and puttying.

Most milestone- 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. Using a building hair dryer or burner old surface heated to 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. Not effective on plastic, last at high temperature starts to melt and deform. 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 angle grinder (angular 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 metal nozzle. This method is suitable for stripping wood and metal from oil paints.

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

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 final stage. preparatory work. Advantage manual method- this is the ability to remove any paintwork.