How to remove old paint from wood. Have you decided to update the wooden surface? Basic ways to remove old paint from wood

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

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

Chemical way to remove paint

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

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

The chemical method is suitable for cleaning most surfaces:

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

The method of removing paint by mechanical action

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

To clean concrete, stone, plastered walls from water-based paints use surface grinders with coarse 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 as a final step. preparatory work. The advantage of the manual method is the ability to remove any paintwork.

Faded and cracked paint wooden frame, doors, log cabins and on any other cleaned wooden surface that is present in the house, carries a certain charm of antiquity and comfort. But time and weather no one canceled, and the coating begins to crumble to the ground in pieces. It's time to go to the construction market for a new composition and update appearance old tree. But first, the old paint must be removed without damaging the wood. How to remove old paint from a tree, and tells the material of this article.

Before picking up a building hair dryer, a brush with a chemical washer and reading about how to remove old paint from a wooden surface, you need to know about the type of wood with which you will work. Some types of wood require more care than others. For a good result on any tree, you should follow the technology - use the right tools to remove decorative coatings.

It would not be superfluous to find out about the age of the wood, its operating conditions, climatic indicators, as well as other factors that have or previously had an impact on the painted wood.

Wood can last more than a dozen years only with proper, permanent care. In some cases, wood exposed from the old paint layer will require treatment with protective agents, otherwise the new coating will not last very long.

Instrument preparation

Prepare your tools ahead of time. To remove you will need:

• spatula or scraper;
• industrial hair dryer with temperature control;
• drill or drill with interchangeable nozzles;
• grinder or grinder;
• chemical washer;
• a rag to wipe off excess paint;
• respirator, gloves and goggles.

What can be processed?

Which products can be subjected to the paint removal procedure, see below:

• internal and external wooden fittings;
• exterior and interior doors and door frames;
• wooden stair railings;
• window frames and window sills;
• wooden floor boards;
• parquet;
• wooden plinths.

Methods for removing paint and varnish coatings

All efforts to remove the old coating from wooden surfaces come down to four main approaches. How to remove paint from window frames, doors, carved elements, how to wash off and wipe off acrylic paint in one of the selected ways, you can find out below:

• Removing old paint from wood surfaces is much easier with this method. The coating, which has already cracked and easily flies off, is scraped off with a spatula or a special metal scraper. Areas that are not so easy to remove manually are finished using power tools. Mechanically, you can easily remove old paint from doors, windows, window sills and other surfaces suitable for processing.
  
• Sandblasting with fine abrasive. A stream of air and fine-grained sand (or soda) crushes and knocks off pieces of the coating from the treated area of ​​\u200b\u200bthe tree. It is not the most used known way. It requires professional and expensive equipment, because such work is performed only by specialists. This is the most expensive, but at the same time fast way removing old paint. With the right grain size of the abrasive and the pressure of the air jet, the tree does not receive any damage.
  
• Thermal way. The paint is heating up industrial hair dryer and becomes very soft, after which without special work removed with a spatula. If the temperature is too high, the structure of the tree can be damaged. Wood different breeds has its own thermal limits. This effective method removal for almost any, even the oldest paint. Even a person with no experience can remove old paint from a wooden surface with a hairdryer. The molten coating is easily pryed off and removed with a spatula.
  
• Chemical way. A layer of a chemical reagent is applied to the paint, which reacts and dissolves it. Chemical solvents weaken the bond of the paint molecules, and it easily lags behind the wooden surface. Many call this method the most effective. Reagents must be selected for different types of wood individually.
  

How to remove old paint from window frames using this method? With improvised tools, you can quickly remove old paint from a tree and to the very foundation. Remove loose coating with a scraper or spatula. The movements should be strong and sharp enough, but you need to remember that the sharp corners of the spatula can leave marks on the surface of the wood.

Kohler does not require moisturizing or other preparation and is removed immediately. Thus, you can quickly remove old paint from a wooden door and other flat wooden surface. simple tools, which are in almost every pantry or garage.

Further, in those places where the paint holds stronger, an electric tool is used. The door from the old paint, which was applied in more than one layer, is quickly cleaned by grinding. This can also be used to clean wooden windows.

The abrasive paper should not be coarser than number 100, otherwise it will damage the wood.

With smooth movements, the remnants are cleaned from the tree. If the layer is thin enough, then you can not clean the paint with power tools. The grinder is suitable for flat wooden doors without threaded elements.

Nozzles on a drill in the form of metal brushes should be taken only in last resort if there is nothing else at hand and the work needs to be done urgently. Coarse wire will scratch the wood and it is likely that it will need to be primed and sanded before painting, which will entail additional time and cost.

It is better to test any method of removing paint first on a piece of painted wood that is unnecessary or hidden from observation, and then you can take it for the entire main volume.

On the video: removing old paint from a wooden window frame.

Application of sandblasting

Removing paint from a wood surface is easy if you use sandblasting. The jet of air from the compressor mixes with fine solid particles, and then breaks the old paint into dust.

This method will be especially effective if the coating layer is quite thick and you need to remove it quickly enough.

Too coarse abrasive particles will start to break the tree, so often the abrasive is taken smaller. It could be river sand or baking soda. For removing old paint from wood that is not very thick layer, sandblasting is suitable not only because of the speed of work. Removing a thin layer will be beneficial from an economic point of view.

With this method of removal, it is very important to choose correct settings supply of abrasive powder and compressor pressure. Then the coating will fly off instantly, and the tree will remain unharmed.

This method is effective, but it is not economical: processing the entire house can get a tidy sum. A person who has little experience in such work can damage the wood. Therefore, you need to read in advance the reviews about the work of the company that provides this kind of service. Removal of paint in this way occurs gently, without much physical effort.

heat treatment

Old paint is heated with a building hair dryer to such a state until it becomes soft, pliable. Softened paint must be scraped off with a spatula. The operation is repeated until the layer of old paint is completely removed. Temperature, warm-up time will directly depend on the thickness of the layer, as well as the composition of the old coating. This method can be called the fastest of the most effective methods that are available in living conditions. It is not necessary to buy a hair dryer, it can be rented.

The point of thermal stripping is not to burn or completely melt the paint. It should lose molecular cohesion, but retain sufficient viscosity for ease of removal.

The painted surface must be heated constantly, evenly, because the color sets quickly and then hardens again. Remove the old paint completely, along with the old primer - while the wood will remain in the same form as it was before the first painting.

Damage to a painted wood surface with a hair dryer is unlikely, and it is almost impossible to provoke a fire. Such cases are extremely rare. This can happen if the wood is impregnated with some kind of combustible compound (for example, gasoline or kerosene is spilled on the floor). Therefore, if you choose how to remove old paint and save the tree, then a hair dryer is perfect for such requests.

Chemical method

If you do not know how and how to clean the window of old paint, then chemical method, according to many builders, the most effective method to get rid of the old coating. The surface is covered with a layer of solvent using a brush, roller or from an aerosol can.

After a while, the coating swells, begins to bubble, wrinkle. This means that a chemical reaction has begun. Remove the coating according to the instructions on the back of the paint remover. Dissolved paint is easy to clean, it is washed off or removed with a spatula.

Almost all types of coatings lend themselves to chemical solvents. Washers do not cause any harm to wood. A tree cleaned with chemistry can immediately be prepared for painting or varnishing.

Things will go faster if there are cracks on the surface. The washer will quickly fill them, and the reaction will start from both sides at once, which will significantly speed up the whole work. But even for paint without visible defects, chemistry is used successfully.

If the wooden surface is indoors, then good ventilation must be ensured. Be sure to use protective equipment. Chemical paint removers are toxic and can cause irritation, burns, and poisoning.

Some older paints contain lead, which can form toxic volatile compounds when the paint is chemically removed. It is recommended to use funds personal protection respiratory tract.

Homemade chemical washer

How to remove old paint from window frames? If there are no solvents on hand, then removing paint from wood carried out using a proprietary tool. For this, a chemical paint remover is made from caustic soda. The recipe is below.

You will need:

• water - 4.5 l;
• slaked lime - 0.9 kg;
• soda ash - 1 kg;
• chalk (preferably) - 1 kg.

Soda dissolves in water and is heated to 60 degrees. Lime is gradually poured into the solution, followed by chalk, if any. Ready solution immediately ready to go. According to reviews, it is quite effective, it will wash off the average layer of coating from the tree so that it is completely cleaned. Now you know how to wash off the old coating, how to clean the door and any wooden surface.

How to properly remove old paint (2 videos)

Application of different methods (30 photos)

One of the first thoughts that arises when looking at a layer of paint that needs to be removed is: “Yes, it will be the easiest to peel it off!”. And now the hands are already reaching for a grinder or a drill with grinding nozzles. We recommend not to rush and analyze the situation, because mechanical removal is not that inefficient, but it is not suitable for all products.

• Can the product be taken outside? There will be an incredible amount of dust and flying off pieces of the coating, and if you start removing paint indoors, then you will have to start a major cleaning later. Plus, you will have to work in a respirator and glasses, which is also not very convenient.
• Is there a thick layer of paint on the product? Previous generations did not stand on ceremony with oil paint: they were tired of color - just cover the old layer with a new one. It turns out that on some Soviet doors a layer cake of 4-5 layers of oil paint has accumulated, each of which is much thicker than a layer acrylic paint which we are currently using. At mechanical removal With such a layer, you will score more than one skin without achieving the desired result, and this is not only insulting, but also quite expensive.
• Is the product stationary? Removing polish from chair legs grinder- the idea is not bad, but to clean it this way window frame or skirting boards that you are not going to beat off the wall, not very much - because of the risk of the sanding disc hitting the wall or window.
• Is the surface of the product flat? If the product has depressions or protrusions, then mechanical way will not the best choice removing paint, as it will still remain in the joints and recesses.

It turns out that you can remove the paint by grinding if its layer is not thick and the surface is even, otherwise the effort spent on removing the coating will not be worth the result that you get.

Sometimes for thin layers it is enough to rub the coating with a brush on metal and sand it with sandpaper with a medium abrasive. If the surface area is small, then it is The best way remove paint without special tools and substances.

Chemical method

Quite quickly and easily, chemical washes, which are sold in construction stores. Only they, of course, do not wash off the paint, but rather soften it, so you still have to work with a spatula. Typically, such a product is applied to the product with a brush or roller, left, depending on the type of product and instructions - usually for 20-40 minutes, and then the softened layer is pryed off and scraped off with a spatula. If the first time it was possible to get rid of only part of the paint, then the procedure is repeated, but the smallest residues can be cleaned with sandpaper.

It is important, when buying such a wash, to check with the seller or make sure for yourself that it is suitable for your type of material and paint. You can save yourself the hassle of looking for a specific washer for your type of paint by purchasing universal remedy. Also, think in advance about whether you can leave the room for the duration of the wash and then ventilate it well or take the product outside. If yes, then you can take a regular solvent-based paint remover, if not, then it is better to give preference to more modern expensive odorless gel washes. That's just the absence of smell does not mean that they are not toxic: with any wash it is necessary to work with gloves, and the room must be ventilated.

According to the experience of builders, we can say that cheap washes Russian production do not do well with old oil paint if it is applied in several layers. With more expensive foreign counterparts, this problem does not arise.

If you have, then you can not spend money on special washes at all: add a little water to it, dissolve soda, and then mix with ground oatmeal to get a paste. Apply the paste to the product, wait about an hour until bubbles form, remove the paint with a spatula, and then degrease the surface. Gloves and ventilation are also relevant for this method.

Do not use plastic container and tools when working with a wash, as they can deteriorate from exposure to chemistry. Also, do not use washes if plastic is located close to the wooden product.

thermal method

The latter method is considered preferable for removing paint from wood, since it can be done quickly, easily, inexpensively and without harm to the product itself. It consists in heating the paint to a temperature at which it begins to correct and release gas. This will cause it to bubble, and it will be easy for you to peel off the old layer by prying these bubbles with a spatula. But what is the best way to do it?

Heating with an open flame, such as a burner, is not only dangerous, but will also have questionable results. Yes, the paint will start bubbling, but fire can lead to drying out of the wood, burnt spots on the product, or poor-quality subsequent painting due to resins released during the treatment with a burner.

It is better to use a hair dryer, but not a household one, but a construction one. Its heating is hundreds of times stronger, and the paint begins to lag behind the wood literally before our eyes: just have time to pry it with a spatula. Of course, it’s scary for an inexperienced person to work with such a hair dryer: if you accidentally point a stream of hot air at yourself, the case will 100% end in a hospital. But subject to all security measures, this method beats all the others! If you have a person willing to lend you a blow dryer for a day.

Strong heating, as well as chemical processing, are not allowed if the product has plastic parts that cannot be dismantled. Also, do not heat the wall with a hair dryer in areas where the wiring passes, as this can lead to damage to it.

Or maybe not remove the old layer at all?

Yes, it is often necessary to remove the old layer of paint, especially when the paint has begun to crack and peel off or when the surface has become very uneven and bumpy due to the multi-layering. But you don't have to go through the long and complicated process of stripping paint by choosing a new coat on top of the old one.

The surface will have to be prepared: the oil paint must be sanded, removing the bumps, then washed with an alkaline solution, such as soap, primed with an alkyd or synthetic primer, and then apply a new layer. If after grinding the surface is still not leveled, the product can be puttied before priming.

If you want a translucent effect with a translucent wood texture, then the paint will have to be removed, even if painting a new layer on top of it is quite possible.

You will need some skill in removing paint from wood, but once you figure it out once, you can easily repeat the procedure if necessary. How exactly you will remove the coating is up to you, but, you see, now you have plenty to choose from.

During the repair, each of us faced the problem of removing old paint. This is a particularly laborious process when we are talking about removing paint from wooden surfaces, because wood has the ability to absorb any liquids, including paint. The process of removing paint from wood is called decamping. What are the methods of decamping?

mechanical way

Of course, you can make an effort and clean the wooden surface by scraping off the old paint with a spatula or a wire brush. If it is a flat surface, then this process will not cause any special difficulties. And if it is necessary to remove the paintwork from decorative surfaces: carved furniture, twisted trim, etc., this will be a very laborious process. Lots of hard-to-reach places, recesses will not allow you to clean the surface qualitatively. In addition, a sharp spatula can damage the tree or injure yourself.

Heat exposure

Another method that is often used at home to remove paint from wood is to heat the surface. household hair dryer and removing the swollen paint with a spatula. The method may not be bad for cases where you need to clean a small area of ​​old paint, and if it's the whole walls in the house or the floor. Can you imagine how much effort it will take?

homemade solution

You can use a solution of caustic soda. This method is suitable for all surfaces, but requires special care, because. this solution is chemical composition. Therefore, it is necessary to protect the face and hands from contact with the skin. After application, the paint begins to bubble and is easily removed with a spatula. Do not forget to wipe the surface cleaned of old paint with a degreasing compound or water.

Chemicals

The easiest and best way to remove a particularly multi-layer paint is to buy a chemical agent for this purpose in the store, choosing it for a specific type of paint applied to a wooden surface. Chemicals are acids and alkalis, the use of which requires special care and application protective equipment skin (rubber gloves), respiratory tract (have a sharp specific smell) and eyes (goggles). For domestic purposes, solvents containing acetone are usually used.

Recently, effective and universal washes have appeared that are the safest in their application. An example of such a tool is Docker S5, a tool from Docker Chemical that allows you to remove paintwork without damage and blackening of the surface.

Wood paint remover DOCKER Wood fast action (5-12 min.). Effectively removes paint coatings ( water-dispersion paints, oil paints, enamels PF-115, PF-133, PF-266, GF-021, etc.) from wooden surfaces. Deep penetration wash. gel solution. A special additive allows you to save the structure of the tree without damaging the surface of the wood. Without smell.

ABOUT one of the most "sore" issues that arise during cosmetic and overhauls- how and with what to remove or remove old paint. The task is not easy, because when creating new types of paints, their manufacture, the task of the developers is exactly the opposite - how to make the paint more stable and durable. However, there are ways to clean old paint from surfaces, and we will talk about many of them below.

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Video version of the article

Let's start with removal, removal from various surfaces coatings from oil (alkyd) paints. There are three ways in which this problem is solved: thermal, mechanical and chemical, as well as their various combinations. The most common of these methods is thermal, with partial application mechanical cleaning.

Thermal method of removing old paint (by heating)

This process is carried out as follows: the old paintwork is heated to a softening temperature and in this state it is scraped off with a steel spatula. The coating is heated using a blowtorch, gas burner or industrial hair dryer.

The thermal method is simple, effective, but has its drawbacks and limitations. For example - it will not be possible to remove paint from plastic, since most plastics begin to deform already at two hundred degrees Celsius. In addition, the use of devices that create a jet of hot fire is not always safe. Indoors, another factor comes into play, limiting the use thermal method, - release of toxic substances from paints when heated.

A big disadvantage of the thermal method of cleaning old paint is also the fact that it can be used to clean far from any surface, even heat-resistant. It is not very effective when cleaning massive metal surfaces.

If the question arises of how to remove old paint from wood, then heating is indispensable, especially when wooden product covered with paint long time, layer by layer. When heated, such a thick layer bubbles and is easily peeled off, leaving a clean surface suitable for new painting without any additional preparation.

The technology for applying thermal cleaning of paint is simple: with one hand they hold a heating device, directing a flame or hot air to the surface, moving the jet as the paint softens, and with the other hand, along the way, they clean off the softened paint with a spatula. The skill of working simultaneously with both hands is developed literally in ten to fifteen minutes.

There are also attachments made of metal chains, often homemade, for removing paint with a drill - this method is crude, but often convenient.

In addition to these tools, there are more specialized devices - surface grinders and cleaning mills. The latter are effective in removing paint from plastered, stone, concrete and other similar surfaces, but are unsuitable for metal.

Surface grinders for cleaning oil compositions are ineffective, because sandpaper quickly becomes unusable, clogged with paint, but sometimes, especially if high-quality processing of small areas is necessary, they are not replaceable. In addition, they are well removed most water-based compositions.

The technology for cleaning old paint with a power tool is even simpler than with the thermal method: the working part of the tool is pressed against the surface to be treated and, as the desired degree of cleaning is reached, it gradually moves.

Another tool that will help in removing old paint is a perforator. With the help of a wide nozzle-shovel, often homemade, you can remove old paint from concrete foundations, knocking it down with a perforator. Flaw this method The fact is that along with the paint, the base itself can be damaged, so this method is more suitable for removing paints from durable concrete. Together with paint, putty and plaster are well removed in this way, with → .

Sandblasting method of removing, removing old paint

Another common method of mechanical cleaning of old paint is sandblasting. The principle of sandblasting is that a jet of air or water is directed to the surface to be cleaned under high pressure, into which abrasive particles are added (most often ordinary sand). Sand grains hitting high speed on the surface, it is perfectly cleaned not only from paint, but also from rust, from various kinds of other persistent contaminants.

The disadvantages of the sandblasting method include the relatively high cost of equipment and the need for certain skills to maintain the fixtures and produce the work itself.