Cleaning doors from old paint. Doors for painting: we prepare and paint

If you started a do-it-yourself repair in the house, then be sure to pay attention to the condition of the doors, windows and floor. Wooden doors have many advantages over modern products. They differ in both quality and convenience, and will also be able to serve you for a very long time. If you have a solid wooden door, but the paint on it has peeled off and cracked from time to time, do not rush to throw it away, but try to update it. To do this, you need to know how to remove old paint from the doors.

Peculiarities

Before the canvas is repainted, all layers of the old paintwork must be completely removed. Otherwise, it will look not only not aesthetically pleasing, but also not close. There are several options for removing obsolete paint from wooden surface. The most common ways:

• Chemical;
• Mechanical;
• Thermal.

Chemical

The chemical method is considered the fastest. Here they use different washes for paints. They must contain solvents to soften paints. This makes it possible to remove it with a simple construction spatula (metal).

Immediately prepare all the materials and tools that you will need for work:

• chemical agent to remove the coating;
• brushes;
• solvent;
• putty knife;
• protective glasses;
• gloves.

Now let's start the process, guided by the video:

1. First, remove the door from the hinges, and also remove all the locks, as shown in the photo. Work is best done in a utility room or in a separate room;
2. Using a brush, apply a wash on the old canvas;
3. Let it brew and start rubbing until the paint starts to peel off;
4. Peeling paint can be removed with a spatula, and residues can be removed with sandpaper.

Please note that for different types paints, there are special chemical washes. If you take the wrong solvent, there will be no effect.

In addition, all chemical compounds are toxic, so you need to work with gloves and goggles in the open air or in ventilated areas.

To remove old paint from a wooden canvas, a special chemical paste is also used, which is prepared from caustic soda and oatmeal. You can prepare such a composition yourself:

1. Caustic soda is completely soluble in water;
2. Then add oatmeal and stir until you get a paste-like mixture, as shown in the photo.

This composition is usually used for doors with complex shape. Also, such a paste is best used when removing a multi-layer coating and in hard-to-reach places. For the best effect, the composition must be applied to the canvas in a thick layer. After the paint begins to bubble, remove the paste with a scraper along with the old coating, and then rinse the surface with water pressure. With this chemical composition You have to be careful not to burn your skin.

Mechanical

To work mechanically, you need to prepare:

• scraper;
• chisel;
• grinder or grinder.

Of course, this way of working is long, and besides, you can get injured. However, sometimes without knives and other sharp objects it is difficult to clean the product from paint in hard-to-reach places.

The mechanized method consists in the use of a grinding machine. But it can only be effective if the door is covered with only one layer of paint. If the coating is multilayer, then it is better to use a "grinder" with brushes, as shown in the photo.

Thermal

A building dryer is an indispensable tool for heat treatment of doors covered with old paint. Modern hair dryers have a heating regulator with which you can soften the paintwork on a wooden surface, and then clean it with a knife, as shown in the photo.

If the door has glass, it is better to remove them. The temperature of the air that comes from the hair dryer is 600 degrees and the glass can simply crack.

If you are going to paint the restored canvas again with your own hands, it will not cost you much work. We can only advise you to carry out trial work first from the “wrong side” of the door. Then on the other hand you will not make possible mistakes.

Summing up

Wooden doors are considered the most durable, and after restoration, you can not tint them for five years. Interior doors They will last even longer, as they are installed indoors and are not exposed to various weather influences.

If, in the process of furnishing or renovating your home, you have a desire to update, freshen up or completely change appearance solid pieces of furniture made of wood - doors, floors, window sills, frames, platbands, cabinets, tables or chairs, then in this case there is pressing need first of all, remove the old paint from the tree, that is, prepare the surface for all subsequent work.

And if in the case of a new surface, the situation is quite simple: it needs to be sanded and then primed, then the old wooden surface will require much more time and effort to bring it into proper form. The matter is also complicated by the fact that a tree is relatively soft material, and when removing paint from it, there is a risk of damaging its surface.

Is it necessary to remove paint from wood surfaces? This is perhaps the first question you ask yourself when you decide to do some kind of restoration work. After all, in some cases it really does not make sense to remove the old paint from the surface, and it is quite possible to apply a new layer of paint on top of the old one.

In this case, you should take a closer look at the surface being treated: if the layer of old paint is thin, the paint does not lag behind the surface and there are no cracks on it, then minimal sanding will be enough, after which it will be possible to start re-painting.

• the previous paint layer is too thick;
• the surface has already been painted several times;
• there are cracks on the layer of old paint;
• the former layer bubbles and lags behind the surface;
• you are going to use a different type of paintwork than the previous one.

How to remove old paint from wood

There are three main ways to remove old paint from a door or other wood surface:

1. Mechanical
2. Temperature
3. Chemical
   

Mechanical way to remove the old layer of paint from the surface of the tree

This method consists in mechanical action on a previously painted surface. This is the first method that is tried to be used to clean the surface of a door, floor, window sill or any piece of wood furniture from old paint. In this case, it is simply scraped off with the appropriate tools:

• spatula;
• metal brush;
• sandpaper;
• chisels;
• scraper.

Beyond simple hand tools requiring significant physical effort, you may need more serious power tools: an electric drill with a special nozzle for grinding and cleaning, Grinder or a grinder with a disc for grinding and cleaning.

The mechanical method of removing old paint is justified if the paint layer is already very old, and the paint peels off the surface easily, in layers. It's also a good idea to mechanically scrape old paint off flat surfaces, or small surfaces such as window frames.

However, if we are talking about uneven decorative surfaces, for example, twisted, carved and curved elements on the door, furniture or architraves, simple mechanical removal will be too complicated, time consuming and ineffective. Another negative point of grinding is the impossibility of completely removing the paint, since it usually only makes the paint layer thinner, and paint usually remains in hard-to-reach places.

Temperature method for removing old paint from wood

An effective way to remove the old paint layer with your own hands is to heat it, followed by removing the peeling paint with a spatula.

How to remove old paint with a building hair dryer? To do this, you need to direct a stream of hot air from a hair dryer onto the treated paintwork surface. From exposure to heat, the paint softens and begins to swell, after which it is removed with a spatula, scraper or chisel. If there are depressions on the surface, the paint can be removed from them with a triangular spatula. In the absence of such, you can use a razor.

But remember that this process requires accuracy and caution, because if you handle the hair dryer and spatula ineptly, you can get hurt or damage the wooden surface. You also need to keep in mind that it is difficult to remove with a hair dryer. oil paint, since it, unlike other types of paints, does not exfoliate when heated, but melts, turning into a greasy soft substance, which is difficult to remove with a spatula.

How to chemically remove old paint from wood

A tool for cleaning old paint from a door, frame, trim or furniture can be made by yourself or purchased ready-made. The home remedy in this case is a solution of caustic soda. This method requires great care and appropriate protection of exposed areas of the body, that is, it is imperative to wear thick rubber gloves and unwanted clothes. Next, you need to pour a solution of caustic soda into an unnecessary container and apply it with a brush to the painted surface. Continue application until the old paint begins to blister. After that, you need to clean off the paint with a spatula, scraper or chisel, and apply any degreasing agent to the treated surface, or at least wipe it with water.

It is much easier to remove old paint from wooden objects by purchasing a ready-made chemical agent designed for a specific type of paint in combination with a wood surface. When using them, it is very important to pay due attention to the protection of the skin, eyes and respiratory tract: protect your eyes with goggles or a mask, hands with gloves, and be sure to open the window while working.

If you cannot determine which paint was used in this case for painting, for example, doors, you can choose a universal chemical for all types of paint. The selected solvent is also applied to the surface with a brush, roller or spray gun, and after 10-15 minutes, the paint is easily removed with a spatula or even just a rag moistened with kerosene or water.

Items that have age have a special charm. If you have an old wooden door but the paint is peeling off, it's not hard to give it new life. It would seem, why mess around if you can easily buy a new one: a rich assortment is offered in finishing and building goods stores. But is it worth changing a solid wooden door for a modern product made of thin MDF panels, hollow inside and finished with a laminated finish, even if it looks like a “Milan walnut”? The existing product can be restored with your own hands. First you need to remove the paint from wooden door.

Removing old paint

Why repair a door?

Before considering how to remove paint from doors and choose the most suitable option, let's think, why waste time and effort.

1. Old wooden doors have good quality. They are made of solid wood, very often oak served as the material for manufacturing, even if the sash is painted.
2. Non-standard vintage door panels. In old apartments often stand antique doors, high, bivalve, paneled. You can’t buy these in the store, and custom-made will be expensive.
3. The door is beautiful. If you are lucky - and you are the owner of a richly decorated carving door leaf, throwing it in the trash will be blasphemy.
4. Art object. If you creative person capable of creating a work of arts and crafts with his own hands, then wooden sash- an excellent field for creativity.

From the above points, it can be seen that there are plenty of reasons for restoration and repair, but you can have your own.

materials

Theoretically, there are three ways to get rid of old paint:

• Thermal. The thermal method is based on heating the old paint until it softens.
• Mechanical. The coating is removed using various scrapers, sandpaper. Can be done manually or with power tools.
• Chemical. The paint is being processed chemicals, softened and removed.

Related article: Projects of two-story houses

In theory, everything is simple, but in practice, most often you have to use all three methods, because chemistry does not dissolve all types of paint and varnish coatings, heating cannot remove the layer in the recesses, and the mechanical method, even with the help of a power tool, is an extremely laborious and dusty process. Therefore, do not rely on any one option. Better stock up large quantity fixtures and means.

Implementing a door renovation plan will require some tools and patience, because it is likely to quickly remove the old paint from a wooden door, even after watching the video detailed instructions, will not work.

Instruments

A building hair dryer is an indispensable thing for removing old paint. It looks and functions almost like a regular hair dryer. That's just the air temperature gives out from 100 to 600 ° C. Therefore, handle it carefully so as not to get burned, and in no case use it instead of a hair dryer. And vice versa: if there is no building hair dryer, then you should not try to use the usual hair dryer. You won't get results.

You can use other methods besides a hair dryer. heat treatment: blowtorch or gas burner. These tools require special care in handling. You can easily overheat the area, and damage not only the paint, but the wood itself. In addition, these devices have open flames, so follow the safety rules. An infrared lamp is also used to heat the coating.

A cycle is a scraper with a metal blade and a handle. If it was not possible to acquire a special scraper, a spatula, or any other similar tool, will do.

You will need sandpaper with different grains. In addition to paper, special abrasive sponges are very convenient, especially if there are reliefs on the surface, for example, carving. It is very good if you have a grinder at your disposal - using it greatly speeds up the process.

It's time to renovate, and you've come to the conclusion that old doors need updating. You are not going to buy and install new ones. To begin the restoration, you will need to remove the old paint.

This operation is performed in several ways. But in any case, you have to remove the door from the hinges. Preferably work outside. But if there is no possibility, it is laid in the middle of the room, substituting supports. Before cleaning the door from the old coating, you need to free it from the fittings, dismantle the hinges, and clean it of dirt.

Cleaning methods

There are several ways. Let's consider them in order.

thermal method

It is usually used in the case of a small amount of cracks, when the paint is firmly attached.

To start cleaning it, you will have to get an industrial hair dryer in advance. The material to be cleaned begins to bubble when heated.

To clean the door, the coating is removed with a sharp spatula. Handle the hair dryer carefully so as not to accidentally damage it!

The technology of the thermal method is simple, but this method is not suitable in all cases. With this method, you can clean the old layer only if the base is wood. Plastic from heating can begin to deform.

Another disadvantage thermal method considered to be toxic fumes. Therefore, it is recommended to do this on the street. In extreme cases, you need to open the windows and put on a respirator.

thermal method

mechanical method

Many people know about this cleaning method. You will need:

• spatulas;
• Bulgarian;
• wire brush;
• flat grinder.

Unfortunately, sandpaper quickly deteriorates on a typewriter. Therefore, it is rarely used to remove old coatings over large areas.

First, it is processed by a grinder. Then the paint is cleaned with a metal brush. The rest is scraped off with spatulas. This technology is labor intensive. Without application physical strength cleaning the old coating will not work.

Important! When the paint layer is peeled off mechanically, it is accompanied by a large amount of dust. The operation must be carried out carefully so that the base does not get damaged.

mechanical way

Chemical method

To remove the paint, you can use chemical solutions, they will make the layers softer and they can be easily washed off. For this use:

• solvents;
• acids;
• alkalis;
• special blends.

The solvent is applied to the door. Then you need to wait until the coating becomes softer. If the door has been painted with several layers, it may be necessary to apply the solvent compound several times.

The exfoliated layers are cleaned with a spatula. Sometimes they dissolve completely, all that remains is to rinse everything.

Important! Solvents are toxic, so you can only wash off the paint in this way on the street. It dissolves quickly, but the chemical smell will last a very long time.

Removing paint

How to wash off paint from a metal sheet?

A wooden door can be touched up periodically, but metal doors require a different approach. They are exposed to the weather all the time. To update them, you need to clear the old layer. For this, a grinder or a drill equipped with special nozzles is used.

Before processing, the door is removed from the hinges and the fittings are dismantled. Work should preferably be done outdoors. The cover can be removed by different tools and means:

• kerosene;
• sandpaper;
• spatula;
• grinder.

Just do not think that such work will not require any effort. Even when very strong reagents are used, some effort is required to remove the paint.

It will not be possible to clean with one spatula, you will need a hard nozzle or a good solvent. Working with only one tool, you can scratch the smooth metal surface. This defect subsequently cannot be hidden even under a thick layer of paint.

Steel is machined. Of course, you can do this with sandpaper, but the speed of such work leaves much to be desired.

The grinder can easily cope with old layers, but only if the nozzles are correctly selected. Usually work is carried out with a medium spray head. The speed of rotation of the head should be minimal. Work must be done carefully so as not to accidentally damage the door.

The right nozzle helps you get the job done quickly. The head needs to be constantly cleaned - it quickly becomes clogged with debris particles. The efficiency of the work depends on the cleanliness of the nozzle.

After any method of removal, be sure to sand the surface to achieve smoothness. If cracks are found on the canvas, they are covered with putty. Before starting to apply paint, the surface is primed. When the soil dries well, you can begin to practice painting work.

cleaning

How to clean the door from water emulsion?

How can you wash water emulsion? Today on the market there are many products that help wash off the surface different coatings. To cope with this material, you can use the most popular means.

Wash "Estate"

Issued Russian manufacturers. Suitable for working with different surfaces:

• tree;
• concrete;
• metal.

The wash does not contain harmful aggressive substances, therefore it is completely harmless to wood. Since the structure is gel-like, it is easy to process the surface with it. When it dries, the coating begins to delaminate.

Working Method:

1. apply the composition with a brush on the surface of the canvas;
2. wait 20 minutes;
3. clean the loose layer with a spatula;
4. rinse the door with warm water.

Washing agents

"Set Boya Sokucu"

A special wash designed to work with a water-based emulsion.

Application technology:

• lubricate the surface with a wash;
• wait 10 minutes;
• clean the raised coating with a spatula;
• if it was not possible to immediately wash everything off, the procedure is repeated.

After removing the emulsion with a washing solution, the surface is wiped with a nitrocellulose solvent and then washed with clean water.

How to wash off oil paint?

To remove such a coating from a metal sheet, the following technological sequence must be observed:

• 1.5 kg of quicklime is diluted in water until a creamy mass is obtained.
• the door is covered with it and left for 12 hours.
• the old layer is washed off.

Bleaching powder

To wash away oil coating from a wooden canvas, you need to moisten the surface with water and pour soda ash. Cover the door with damp burlap. It should not dry out, so it needs to be watered every hour. The layer will peel off easily the next day.

Important! Chemical removal requires mandatory compliance with safety regulations. Rubber gloves should be worn on the hands, eyes should be covered with special glasses. A special bandage will protect the lungs from toxic fumes. Chemical solution that gets on the body should be washed off immediately with water.

As mentioned above, you can clean the surface of the coating in different ways. It all depends on conditions and possibilities. It is difficult to advise anything specific, because each owner has his own approach to this issue.

Comparison of the effectiveness of removing with a hair dryer and special means for washing is shown in the presented video.

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Wooden doors bring a special charm to the interior, but only if they look decent and the paint is applied carefully.

Cracks in the paintwork, faded shade and peeling paint on the doors can spoil the whole impression of the room.

There is a need to remove the old paint. For this, proven chemical, thermal and mechanical methods are adopted.

We will tell you more about how to remove the old one from a wooden door in the article.

Choosing a way to remove old paint, the question may arise, should it be removed at all? The answer to this question and the choice of coating removal method depends on the following factors:

• door surface type;
• coverage condition;
• type of paint used;
• adhesion strength of the coating with wood;
• thickness and number of layers.

The most difficult thing will be to remove the layering of the paintwork, which has good adhesion to the material, and the door itself with a complex surface relief and weight decorative elements.

If the door is designed for subsequent painting, then, depending on the condition of the coating, you can do with sanding. This is possible when the paint has been applied neatly in one coat and does not contain peeling or chipping. The old coating is simply processed with sandpaper, and a new layer can be applied.

Old layers of paint, which, under the influence of atmospheric influences and time, have significant defects (chips, cracks, swellings), will have to be removed. It is also necessary to remove too thick a layer of paintwork that has frozen streaks and other results of inaccurate door processing in the past.

It happens that new door paint incompatible with the old one. This is also an occasion to completely remove the paint from wooden doors.

Preparatory work

Preliminary preparation of the door requires cleaning from dust and dirt. Also it is necessary to clean off the swollen layers lagging behind the base. If one of the sides is hidden in the future, for example, with leatherette upholstery, the paint can not be carefully removed - it is enough to clean off the detachment.

Having decided on the nature and scope of work, you should choose tools for removing paintwork.

You will definitely need:

• rags;
• putty knife;
• facilities personal protection(respirator, special goggles, gloves).

For the chemical method, you will need reagents, a bucket of water, a brush for applying special composition. Mechanical and thermal method will require special tool(grinding device, drills with nozzles, industrial hair dryer).

How to clean at home?

For removing old paint from wooden doors one of three methods is used:

1. mechanical impact.
2. The use of chemicals.
3. Exposure to high temperatures.

Each option has its strengths and weak sides. Depending on the specific situation the appropriate method, appropriate instrument and preparations are selected.

Thermal methods

The thermal method of cleaning a wooden door from paint involves the use of an industrial hair dryer and a spatula.

Work order:

1. Plug in the hair dryer.
2. Direct a jet of hot air at the door area.
3. When heated, the paint will begin to swell and lag behind, and it will be easier to scrape it off with a spatula.
4. The processing process is repeated on the next zone.

After the entire door is processed, it is necessary to finalize the missing fragments. The surface is cleaned with sandpaper.

If an industrial hair dryer is not available, you can use an iron, after placing foil between the sole of the device and the door.

Advantages of the method:

• environmental friendliness;
• not much experience required.

Disadvantages:

• it is necessary to use a special tool;
• not always possible to use on difficult surfaces;
• there is a possibility of damage to the tree if the temperature is set incorrectly;
• revision may be required.

How to clean the surface mechanically?

The mechanical method involves removing a layer of paint using tools: from a conventional spatula to a drill with nozzles and other special equipment. The use of a power tool speeds up the process, but may not cope with difficult places.

Disadvantages of the method:

• dust formation;
• high probability of physical damage to the surface;
• need a tool;
• the need for protective equipment.

Advantages:

• environmental friendliness;
• Availability good tool speeds up the process.

As a suitable paint stripping tool, you can use:

Removing a multi-layer coating using only sandpaper or a spatula is laborious and inefficient.

The best solution to a problem is a choice chemical method or use of power tools.

How to wipe with chemicals?

washout by chemical means carried out using solvents. The technology is based on the destruction of the structure of the dye itself by chemicals:

1. The solution is applied to the surface with a brush.
2. Withstand the required time, which depends on the composition and type of paint.
3. Using a spatula or scraper, remove the coating swollen under the action of reagents.
4. Clean off paint residue.

If the instructions for washing indicate that the surface needs additional wiping with white spirit or other solvent, this must be done.

Advantages of the method:

• the speed of action of the chemical composition;
• ease of use;
• does not require excessive effort;
• no special skills required.

Disadvantages:

• toxicity of chemicals;
• an allergic reaction is possible;
• mandatory availability of personal protective equipment;
• the need to organize good ventilation in the process of using funds;
• pungent smell;
• solvents require special disposal.

Despite enough high efficiency, the use of chemicals often requires mechanical surface finishing.

Before using a solvent, it is important to check whether it is suitable for a particular type of paint, and whether the condition of the wood allows this cleaning method to be used.

The selection of a reagent should take into account the type of wood and the condition of the material.. Decayed wood may not withstand intense chemical attack.

How not to damage the door leaf?

The wooden surface has a characteristic texture, is characterized by susceptibility to hard mechanical stress.

When working with natural material the following points should be taken into account:

In addition to updating the paint, attention should be paid to the condition of the fittings. If necessary, replace or restore metal elements.

Cleaning Tips:

1. Work must be carried out using personal protective equipment.
2. Removable parts wooden fittings, For example door handles, it is convenient to process separately.
3. If the door is removed, then before cleaning it is desirable to remove it and lay it horizontally - it will be more convenient to carry out the work.
4. For heat treatment, open fire should not be used - only hot air.
5. After washing, the defects of the wooden surface, before coating with new paint, must be eliminated - by sanding, puttying.
6. Before new painting the tree should be primed.
7. The use of sandpaper for removing paint and sanding can only be recommended for a thin layer of coating on a wooden door.
8. Grinding work on wood with power tools is recommended to be carried out on the street. This will reduce the likelihood of hitting a foreign object with the working part of the equipment.
9. When used for cleaning chemicals, do not use plastic container- the solvent can "corrode" it.

Haste when removing paint is inappropriate, as it can damage the wood and cause injury.

Related videos

How to remove old paint from a wooden door, video instruction:

Conclusion

Cleaning a wooden door from old paint is a laborious process that takes time and a thoughtful approach to achieve the goal. But even those who do not have experience and special training can cope with the task.