How to remove old paint from a wooden door?

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.
• it covers the door and is left for 12 hours.
• the old layer is washed off.

Bleaching powder

To wash off the oily coating from a wooden canvas, you need to moisten the surface with water and sprinkle with soda ash. Cover the door with a damp burlap. It shouldn't dry out, so it needs to be watered every hour. The next day, the layer will be easily peeled off.

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

A comparison of the effectiveness of removal with a hair dryer and a special remover is shown in the video presented.

Cleaning iron doors

Entrance doors are usually metal. They are constantly exposed to atmospheric conditions. Therefore, they cannot be simply tinted like wooden ones. The paint and varnish layer is completely removed from them. For cleaning you will need:

• acetone or white spirit;
• skin of different grain size;
• Sander;
• putty knife.

Before work, the metal sheet is removed from the hinges and laid in a horizontal position. Remove the colored layers with a grinder using different attachments depending on the thickness of the previous layer. Then the small residues of the layer are covered with a solvent and left to swell. Swollen paint is removed with a spatula. As well as from a wooden surface, paint is removed from a metal door by thermal and chemical means. When using chemical cleaners, the drug is immediately removed from the surface after removing the paint by cleaning the door with solvent and water. The cleaned surface is leveled, freeing from cracks and flaws, using an automobile putty, in places of damage, then sanded by hand or with a grinder.

Tools for the job

The following tools are used to heat the painted surface:

• thermal gun (melts paint - easier to remove with a knife, brush);
• hair dryer (construction) - used for wood, can be used indoors, temperature is regulated;
• gas burner;
• blowtorch;
• iron with foil.

The mechanical cleaning method, in addition to sandpaper, spatula, knife, metal brush, involves the use of such power tools:

• grinder equipped with a grinding attachment;
• Sander;
• drill with a brush for metal.

A spatula is required for chemical cleaning.

Having figured out how to effectively clean a wooden door from paint, you can start the processing process. These methods will help you save money on purchasing a new design and improve the old one.

How to clean, wash interior doors from greasy stains with a cleaner

It is surprising that interior doors made of various materials can be wiped off grease with home remedies without damaging the coating.

What and on which doors can you use?

• Regular raw potatoes will remove stains from the MDF door. Grease the required areas with a cut of a raw vegetable and wait for the surface to dry, and then wipe it with a dry soft cloth. The method is successfully used for old dirt. In which case, stains on the door are removed with talcum powder or baby powder.
• Remove fresh greasy stains with a solution of dish soap and a soft sponge. After that, the door is washed with plain water and wiped dry.If the surface is glossy, it is advisable to polish it.
• A viscous paste of clay and vinegar can help remove stains from an unpainted wooden door. The paste is applied to a greasy surface and waited for drying, then removed. It is best to use kaolin clay to avoid leaving other stains.
• Fat solvents such as vinegar, ammonia, acetone are suitable for a laminated door. The solvent is applied to the cotton wool and the surface is wiped off. Before large-scale use, do a test on the bottom of the door to make sure the laminate will not be damaged.
• Glass cleaning liquids are also used to clean doors.
• An interesting option is to remove dirt with a melamine sponge. Before work, it is moistened, it foams and it is due to such a sticky foam that contaminants are removed. But do not use it on varnished surfaces.

Thermal

The building hair 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 just crack.

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

Let's sum up

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

Cleaning methods

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

Thermal method

It is usually used for few cracks where the paint is firmly in place.

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

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

Another disadvantage of the thermal method is the release of 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;
• surface grinder.

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

First, it is processed with a grinder. Then the paint is cleaned with a wire brush. The remains are cleaned off with spatulas. This technology is labor intensive. Without the use of physical force, it will not be possible to clean the old coating.

Mechanical method

Chemical method

Chemical solutions can be used to remove the paint, they will soften the layers and wash off easily. To do this, use:

• solvents;
• acids;
• alkalis;
• special mixtures.

The solvent is applied to the door. Then you need to wait until the coating softens. If the door is painted with multiple coats, you may need to use the solvent compound several times.

The detached layers are cleaned off with a spatula. Sometimes they dissolve completely, you just have to rinse everything.

Removing paint

Use of chemistry

The composition is used as follows:

1. All doors and windows are opened. Air must constantly flow into the room.
2. All surfaces that cannot be processed are covered with plastic wrap.Liquid spills on furniture or floors will cause stains.
3. Pour the product into a separate container. A brush or roller is immersed in the composition. The tool is selected taking into account the consistency of the wash. The roller is rolled over a perforated tray.
4. Apply the solvent to the base to be treated. Wait until the dye composition dissolves. The procedure takes 10-30 minutes.
5. Remove the dissolved material with a metal tool. If necessary, the liquid is reapplied.

When choosing a wash, the following points are taken into account:

1. Gel formulations are more expensive than liquid formulations. However, the thicker consistency provides faster results.
2. When working in a room with poor ventilation, use the least aggressive formulations. Working with them takes a lot of time, but the likelihood of poisoning is excluded.
3. It is not recommended to use inexpensive solvents of domestic production. A multi-layer oil coating cannot be removed with such a wash. Means of foreign production quickly cope with the task.
4. Some washes tend to darken the substrate to be treated. If it is impossible to refuse to use them, the tree is bleached with chlorine.

You can remove old paint with caustic soda. The substance is dissolved in a small amount of water to the consistency of thick sour cream. Ground oatmeal is added to the mixture. The resulting paste is spread over the surface. When the paint swells, it is scraped off with a spatula. Before further processing, the base is degreased.

How to clean the door from water emulsion?

How can you wash a water emulsion? There are many products on the market today that help wash off different coatings from the surface. To deal with this material, you can use the most popular tools.

Washing off "Manor"

Produced by 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 flake off.

Method of work:

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

Rinsing agents

"Set Boya Sokucu"

Special remover designed to work with 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 immediately possible to wash everything off, the procedure is repeated.

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

Expendable materials

Rags to remove dust, polyethylene to protect furniture and other items, scotch tape - it's hard to say right away why you might need it, but the fact that it will be useful for something is a fact.

Various old paint removers are available on the market. Try to determine the type of paint and varnish material and find the right chemistry.

Getting started

The work is going to be quite dirty, and in the process, no matter how the coating is removed, rather unpleasant odors appear. If you plan to work indoors, cover the room with a protective film and check if it is possible to ventilate the room.

Begin the process of removing old paint by using a hot air gun. Most models have temperature control - you need to choose it empirically. Hair dryers are often equipped with additional attachments. Among them there is a scraper nozzle, which allows not only directing a stream of hot air, but also simultaneously scraping off softened paint.

Where the coating cannot be removed with a hair dryer, use other methods.

When the coating is mostly removed, the surface of the door leaf is additionally treated with sandpaper to remove the remaining areas of the coating and seizure marks from the scraper.

Remove dust and inspect the surface. Perhaps, in some places it is necessary to fill in defects. Before filling in the chips and potholes, examine the door to decide whether to paint it with new paint, or if the wood is well preserved, maybe decide that varnishing will add more charm to the product.

Now you know how to remove old paint from a door. The old coating has been removed, and you can proceed with the planned finish.

How to process wood and metal surfaces

For a wooden door, scrupulous care is required, as well as high-quality processing during its creation. For these factors, they will help keep the canvas from moisture, fungus, mold, small pests, and cracking.

Step-by-step processing of a wooden canvas from scratch:

• Before starting processing, the door is sanded with fine sandpaper. To eliminate large defects, a coarse abrasive is used. In difficult cases, the surface is putty.
• After preparatory work, it is customary to impregnate wood with abiotics, which are antifungal and anti-mold agents. They are applied as usual paint with a brush or roller. If the solution is well absorbed, then you can soak the door a second time after a day. The abiotic penetrates deep into the structure and protects the door for many years.

Note: you can putty the door even after applying the abiotic.

• When the door is completely dry, it is re-treated with emery.
• Before painting, the canvas is covered with a double layer of primer. They use either a primer for wood or drying oil. The layers are not applied in a row one after another, it is necessary to wait until dry.
• When processing doors with a varnish composition, the coating of soil or drying oil is excluded and replaced with a stain. How dark the wood will be in the end depends on the number of layers of stain. The varnish is applied in two layers. The first layer dries for at least 36 hours.

Metal is also a capricious material, and if you have not been interested in the state of your door for a long time, then do it right now. The most common damage to metal is its corrosion, which has many manifestations. For example, stained, pitting, through and under-film corrosion, when the destruction of the metal occurs under the coating. How can a surface be treated against rust?

• Clean the surface with wire brushes. This method is suitable for small spots, with thick layers of rust, it is used at first as an auxiliary one. It is not effective, since the degree of cleaning is low and a lot of dust flies in the process.
• Grinding disc. Suitable for small damaged areas, the surface is processed with high quality, if the disc is made of good material. It should be borne in mind that the disc is erased in the process, and its use requires skills.
• Metal processing with a sandblasting gun. The bottom line is that jets of sand fly out under pressure on a corrosive surface, which peels off as a result.
• They also use a combination of water and sand, waterjet processing of metal. Corrosion and previous painting are completely susceptible to strong pressure.

There are also chemical cleaning methods. For this, chemicals are taken. They can be washable or indelible. The disadvantage of rinsed substances is that their contact with water creates additional conditions for corrosion.

• Hydrochloric or sulfuric acid in 5% concentration does an excellent job with corrosive coating. The acids are so strong that an inhibitor must be added to them to slow down the action on the metal. In its role is urotropin, in the amount of 0.5 g per liter of solution. A disdainful attitude towards the addition of an inhibitor will play a cruel joke - not only rust will dissolve, but also metal.
• Metal is treated with a 15-30% solution of phosphoric acid with the addition of butyl alcohol (4 ml per liter) or tartaric acid (15 ml per liter of solution).
• For surfaces severely damaged by rust, use liquid paraffin (100 ml) and lactic acid (50 g). Wipe the cleaned surface with vaseline oil.

But removing rust from the door is not enough, this is only the first stage in processing. What's next?

• A thoroughly cleaned surface with pronounced defects is sealed with automotive putty, they are waiting for it to dry, and then the door is treated with an abrasive.
• The surface is covered with an aerosol primer. After that, the first layer of paint is applied, after it has dried, the smudges are sanded and covered with a second layer.

The main types used are nitro-enamels and powder paints, which are notable for their low price, stability, and a variety of colors.

Varnishing

Varnish is usually applied to wooden doors.

All varnishes are divided into:

• Alkyd. They are pigmented or transparent (slightly yellow). Do not dissolve in water. With additives, they usually harden quickly and become strong.
• Nitrolacs. They dry instantly, they are based on a solvent, so they are very toxic. Convenient to spray on the surface.
• Polyurethane. Long-lasting, darken the wood, therefore, the surface is primed before applying them.
• Acrylic. They have higher environmental properties, but are inferior in durability and water resistance to other compounds. Odorless, water based.

It is worth remembering: the more toxic and “aromatic” the varnish, the longer it will last. Hardeners will also increase the service life.

Door processing process:

• The preparatory stage involves the removal of the old paint layer with a construction hairdryer or emery. The old varnish is removed with emery or a special remover. Next, the surface needs to be sanded, the size of the abrasive is selected depending on the irregularities.
• A putty that matches the tone of the wood eliminates all defects.
• After that, an impregnation against pests, a primer is applied. Both formulations must have the same base, otherwise flaking will occur.
• You do not need to use an additional primer if the varnish does not change the color of the wood.
• Then the varnish is applied with quick and accurate movements. Application technique - overlap. The coating is created in at least three layers. Each must dry thoroughly before applying the other. All flaws in the process are sanded with sandpaper.

Before fully varnishing the door leaf, make a test in an inconspicuous place to be sure of the result.

Why repair a door?

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

1. The old wooden doors are of good quality. They are made of solid wood, very often oak served as the material for the manufacture, even if the sash is painted.
2. Non-standard antique door leaves. Old apartments often have old doors, high, double-leafed, paneled. You can't buy these in a store, and custom-made will be expensive.
3. The door is beautiful. If you are lucky - and you are the owner of a richly carved door leaf, throwing it in the trash will be sacrilege.
4. Art object. If you are a creative person capable of creating a work of decorative and applied art with your own hands, then a wooden sash is an excellent field for creativity.

From the points described above, it is clear that there are plenty of reasons for restoration and repair, and you can have your own.

Other ways to remove old paint

If none of the methods work, you can use the simpler options:

• Water-based coatings can be easily removed with boiling water and a brush. Spill the surface several times with boiling water and then wipe the decor with an iron brush.
• Oil-based paints soften quickly when exposed to turpentine.A thick layer will have to be processed several times, but you can do without chemical washes and long rubbing with a brush.
• The enamel peels off after treatment with acetone, another solvent.

Safety engineering

Removing paint from the floor is not too difficult, but nevertheless, when carrying out this work, certain rules must be observed:

The use of heating devices is required with extreme caution, avoiding burning and inhaling vapors generated during the heating of varnish and paint, while wearing a respirator. In addition to the latter, when using any of the methods, it is necessary to use other personal protective equipment that will exclude damage from vapors and dust not only to the respiratory tract, but also to the skin of the hands, wearing rubber gloves and glasses for this, which will provide eye protection.
Be sure to follow the instructions for use of chemical compositions and tools.
Before processing with the chosen method of flooring, you must first test it on an insignificant and less noticeable area, since in some situations any of the methods may be ineffective or ineffective .. If all these recommendations are followed, many negative consequences can be avoided

If all these recommendations are followed, many negative consequences can be avoided.

Door painting

After the preparatory work, you can start painting itself:

• The paint should be applied along the grain.
• When painting, the brush should be half dry. If it is completely wet, the paint will not be evenly distributed, and if it is too dry, then it will be difficult to coat the joints.
• To prevent the MDF door from being stained, you can paint it in several layers. The first layer is applied from top to bottom, the second from bottom to top, etc. Before painting a new coat, make sure the previous coat is completely dry.
• With paint, you can simulate real wood. For this, the first layer is painted yellow or gray. Next, the surface is covered with liquid soap, and a dark paint of the desired shade is applied over it. All that remains is to rinse off the soap, and a real wood pattern will remain on the door.

Read on:

What you need to paint the ceiling and walls without streaks

Removing stains from a plastic window sill

How to choose wood floor paint

How to apply acrylic paint to wood surfaces

How to varnish wood floors

How to remove paint from a metal sheet?

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

Before starting processing, the door is removed from the hinges and the fittings are dismantled. It is advisable to carry out the work outdoors. The coating can be removed with a variety of 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, it takes some effort to remove the paint.

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

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

A sander can easily handle old layers, but only if the attachments are correctly selected. Usually the work is carried out with a medium spraying head. The head rotation speed should be minimal. Work must be done carefully so as not to accidentally damage the door.

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

After any method of removal, it is imperative to sand the surface to achieve smoothness. If cracks are found on the canvas, cover with putty. Before starting to paint, the surface is primed. When the soil is well dry, you can start painting.

Cleaning

Wax crayons and polish for pure wood and mdf

Scratches and other damages are rubbed over with wax and polish on wooden surfaces. Polishes are substances that can give shine to the treated surface. They are represented by pasty mixtures or emulsions with a long shelf life.

To remove a scratch in the wood, sand the damaged area with a fine abrasive, and then apply a mild polishing wax and rub with a cloth. A soft wax crayon is used for deep scratches. Pencils have an extensive color palette that allows you to choose the right tone. After grouting the damage, the remaining wax is removed with a dry cloth. The surface is covered with varnish or paint to match the door.

When working with MDF profiles, wax pencils are simply irreplaceable when you need to cover up the gap at the profile joints.

Pros of using wood proofreaders:

• Operative restoration
• Variety of color palette
• Versatility
• Durability due to increased material adhesion and water resistance.

Methods for removing paint from a door depending on the material

To decide how to remove old paint from your door at home, you need to determine the most suitable cleaning method.

There are three types:

• chemical - the use of chemicals;
• mechanical (instrumental);
• thermal - exposure to high temperatures.

Sometimes, to carry out better work, it is necessary to combine two methods.

Chemical method

The chemical method of removal is the most convenient and takes little time. This is a method without the use of special equipment, electricity. Suitable for removing heat-resistant coatings that do not lend themselves to heating.

To select the correct type of chemical, you need to know which material has been previously used. The consultant of the building supermarket will help you to choose a special "wash". Before using it, you must study the instructions, as well as protect yourself with personal protective equipment. When working with toxic solvents, you will need a respirator - be sure to use gloves, goggles.

What solvents are used?

For convenience, washes are available in different forms. This allows them to be applied on any surface:

• liquid reagents;
• pastes;
• jelly;
• dry mixtures for the preparation of solutions.

The following types of solvents are used to dissolve paint and varnish coatings:

• based on white spirit for dissolving oil, nitrocellulose, pentaphthalic paints and varnishes from board surfaces;
• products based on caustic soda or caustic alkali (dissolve acrylic and water-based paints).

Before processing with a reagent, the surface should be cleaned of contamination. The substance is applied for about 30 minutes, then the softened layer is removed with an iron spatula. If necessary, the procedure is repeated until the colored layer is completely removed.

Mechanical method

Before deciding how best to mechanically clean a wooden door from old paint, you need to acquire the necessary equipment. Mechanical processing of MDF and fiberboard will require more effort than using a "wash".

You can remove dry layers manually: with sandpaper, a spatula, a metal brush. This kind of work takes a lot of time and effort. It is easier to do this with the help of electric tools that can be rented from a hardware store or from friends.

With a knife and a spatula, paint is easily removed in hard-to-reach places. Then, the canvas is processed with coarse sandpaper.

Precautionary measures

It is better to remove paint from the door leaf mechanically on the street. When processing with tools, dust forms, so it is recommended to clean the surface a little, moisten it with plain water. In order not to breathe dust, you must stock up on a respirator or mask.

A piece of glass can be used for mechanical cleaning. Be very careful not to injure yourself or damage the wood surface (thick protective gloves are recommended). Remove unnecessary layers along the wood fibers.

Thermal method

The thermal method for removing old dye is based on heating the layers until they soften. Since high temperatures are used during operation, this method is not suitable for flammable materials such as plywood. When working with a wooden door, you need to choose a suitable temperature regime.

Expensive fittings, jewelry, glass are removed before all work so that they do not melt or be damaged in another way. The surface is cleaned of dirt, dust, debris. Remove the paint at the moment when it softens and goes into bubbles

Important! When using the heating method, you need to be careful not to burn yourself on a hot surface, especially if a metal door is being processed. Thermal heating is best done outdoors to avoid pungent chemical odor and toxic volatiles

Thermal heating is best done outdoors to avoid pungent chemical odor and toxic volatiles.

How to remove old paint from walls

The hardest part is removing old oil paint from concrete walls. Paintwork can be removed with solvents, but this is not recommended in poorly ventilated areas.

You can remove paint from the walls with a construction hair dryer. The coating should be heated until it softens, and then removed with a spatula. The main disadvantage of this method is that the evaporation of varnishes and paints is harmful to health.

The mechanical method of removal - using notches with an ax - is convenient for small surfaces. What else can you wipe off old paint? Many people use a hammer drill with a brick crown or a paint grip attachment.

Alternative ways

In the absence of a proprietary wash, other formulations can be used. Below are some instructions for using various washes at home.

Caustic soda solution

You can use both regular caustic soda and a solution, which, in addition to soda, includes oatmeal and water.

When using this chemical, do not forget about safety precautions (goggles, gloves)

Instructions for using caustic soda:

1. We dilute soda in a container with water.
2. Apply the solution with a wide brush. It is necessary to distribute the wash sequentially, without gaps on the surface.
3. We are waiting for the soda to saturate the tree. After a while, the baking soda will begin to corrode the paint, and the coating will be covered with bubbles.
4. Remove the paint and varnish layer with a metal spatula. If the surface has pits, you can use a chisel, a small spatula, or a piece of sandpaper.
5. We wash the wood first with soapy water, and then with a stream of warm water.
6. We dry the material well before priming or painting it.

If the paint layer is thick or there are hard-to-reach spots on the surface, it is more effective to use a thick composition. Density can be achieved by mixing soda with oatmeal in water. The waiting time after applying the solution to the tree is about 1-2 hours.

Bleaching powder

Bleach can be used both as a stand-alone paint remover and as a supplement to a remover. In the latter case, chlorine acts as a bleach.The fact is that after removing the paint, rotting or fungal damage will be found. In such cases, stains are inevitable, which will help bleach bleach.

The paint is removed as follows:

1. We dilute bleach in a container with water.
2. Apply the chemical to the surface using a stiff brush or steel wool.
3. As the chlorine evaporates, the wood will gradually dry out.

Note! Work with bleach only in good air circulation and using personal protective equipment

Other cleaning methods

When choosing a paint removal method, consider the principle of “remove like like”:

1. Water-based paints can be removed with warm water, a stiff brush and rags.
2. Oil-based coatings (paints based on fir or linseed oil) can be softened with turpentine. However, if the layer is thick, this will not be so easy. Oil-based paintwork is the most difficult to remove.
3. Enamel paints begin to flake off after surface treatment with acetone or other solvent.