Nozzle for removing old paint. Effective methods for removing old paint from walls

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

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

From metal surfaces

For roughing work on metal, whether it is removing a layer old paint or rust removal, craftsmen use brushes. They look like a brush made of twisted or untwisted metal wire inserted into a metal glass, or a disk made of the same wire.

You can hear complaints from craftsmen who have used wire brushes for scraping metal that small pieces of wire fly off the nozzle and get stuck into clothing.

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

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

This grinding wheel is available in 2 versions: for a drill and for an angle grinder. Distinctive feature It differs from other types of nozzles for removing paint from metal in that it does not clog and does not cause damage to the metal in the form of scratches. It also successfully removes welding spatter, rust, various sealants and anti-corrosion coatings.

Clean and Strip wheels have good wear resistance and can be used until completely worn out.

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

For rough surface treatment, nozzles with large size grains For finishing work, it is necessary to select a grinding wheel with fine sandpaper. Although this sanding disc wears out quickly and becomes clogged with residues removed paint, it can be restored quite simply. You can understand how this is done from this video.

From the walls

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

In addition to removing paint from walls, using an angle grinder you can remove a layer old plaster, primers or putties

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

In addition to roughing work, this attachment is also used for leveling surfaces, removing various sagging on the wall, removing plaster, putty, etc.

Grinding discs

This category of disks is intended for rough metal work. The sharpening disc can be used for cleaning welds, chamfering cut metal parts, as well as for sharpening tools (drills, chisels, etc.) if there is no sharpening machine nearby.

It is worth knowing that when installing such a disk, the speed on the grinder must be set to the minimum or not exceeding the values indicated on the abrasive wheel.

As a rule, sharpening discs are more often used on small grinders, since they are more convenient to use for stripping metal.

A sharpening wheel can be distinguished from a cutting wheel by its thickness (at least 5 mm) and by the presence of a recess in the center for more convenient use of the disk plane for sharpening the tool.

Tsugunov Anton Valerievich

Reading time: 5 minutes

Preparing the walls for finishing is an important stage in the renovation of a room. Only thorough cleaning of the entire surface of the walls from old wallpaper, paint, tiles, plaster or whitewash will subsequently allow high-quality Finishing work. And although this is a labor-intensive and messy process, it cannot be avoided. Regardless of which finishing option is chosen, the walls must be cleaned to the ground. The only exception is plasterboard sheathing.

Cleaning the walls of old wallpaper

To work you will need:

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

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

The waterproof layer of non-woven or washable wallpaper will not allow water to soften it so easily, so you need to break its integrity by making cuts and notches, and then moisten it generously with water using a sponge. After the glue dissolves, the wallpaper comes off the walls easily.

When removed, vinyl wallpaper does not tear into pieces, but comes off the wall in entire strips. If there is a piece left on the wall paper base, it can be easily removed by moistening it with water and lifting it with a spatula.

Liquid wallpaper can be removed using a spatula, after pre-treating it with water and adding a primer. If removing the wallpaper manually is difficult, you will need Sander with an abrasive attachment.

How to remove paint from walls

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

grinder with nozzle;
spatulas, chisels, scrapers;
hammer drill or electric drill with an attachment;
paint thinners;
axe;
construction hair dryer.

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

Mechanical

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

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

Chemical

Thermal

This method is simple, but toxic, like a chemical one. The essence of it is to heat the surface with a construction hairdryer until the paint begins to bubble, and remove it with a scraper.

Important points:

To make it easier to remove water-based paint from concrete, you need to moisten the surface with an iodine solution (10 ml of iodine per 1 liter of water).
You need to remove acrylic paint by first spraying the wall with water mixed with alcohol or acetone.
Oil, water-based and acrylic paint successfully removed by all three methods.

Getting rid of old whitewash

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

Dry method of whitewash removal

You will need:

respirator;
Sander.

A lot of dust during work is a significant disadvantage of this method. All furniture must be removed from the room or packed in protective film. The advantage is that the sanding machine will quickly clean the walls of whitewash without damaging them.

Wet method

Tools needed to remove whitewash:

putty knife;
bucket with water;
sponge;
brush.

In this case old whitewash you will need to wash it out by generously wetting the walls with water using a sponge. The whitewash that has become pliable is removed with a spatula, and the remaining areas are treated with a brush and washed off with water to the base.

Beating off old plaster with a spatula or hammer. If it doesn’t come off well, use a grinder, a hammer drill, or a special machine with abrasive discs. Before this, the wall should be moistened with water to reduce dust.

A paint scraper for removing paint is one of the most ancient tools for dealing with old layers. paint and varnish materials. And despite the presence of many modern methods cleaning the surface from paint, it doesn’t hurt to have a scraper in the workshop!

A construction scraper is an affordable way to clean a surface!

Modern paints and varnishes are able to stay on the surface for years without fading or peeling. However, to achieve such a result, it is necessary to comply with all technological process! Removing old layers of paint and varnish from the surface is one of its main conditions. Many amateurs or non-professional builders believe that it is enough to remove the peeling paint, but in fact, you need to remove the entire layer to the base.

A spatula scraper can cope with this task, but to remove the paint you will have to make Herculean efforts and devote a lot of time to it. Okay, if the amount of work is really small, but when it comes to a wall painted according to all the rules, after an hour of work you will simply give up and you will be ready to neglect all the requirements just to complete the work as quickly as possible. So, should you buy special equipment? In the case of home renovations that you decide to do on your own, this will be unwise, but there is always a way out! In addition to the scraper, you can get other tools for removing paint. For simplicity, we divide them into three groups: thermal, mechanical and chemical.

Not with just a scraper - we melt the paint!

A hairdryer will help you remove old layers of paint. Just not the one we use to dry our hair, but a construction one. Externally, by the way, it is practically no different from its “cosmetic twin”, but the output temperature is much higher, to the point that the heated material can ignite! Speaking about the thermal method, we are talking about heating the paint with a hairdryer - when high temperature even the oldest three-layer coating will become softer and can be easily removed with a scraper. Some hair dryers even come with a spatula attachment that attaches to the nozzle to heat and immediately remove paint in one stroke.

How convenient this can be depends largely on the paint itself - if it is flammable, then you risk constantly having to deal with flare-ups. In this regard, it is easier to work with a regular heat gun, since there is much more control. The paint should be removed as soon as it becomes soft - overheating and charring can only complicate your work. There are compounds that cannot be heat treated - no matter how you heat them, they will not become softer, and you can damage the material under the paint.

Therefore, if it is possible to test such a unit on a specific surface, be sure to do so. This method gives the best results when removing old layers from wooden products, since metal ones dissipate heat and the paint warms up worse. It is best to use a wooden scraper for wooden products, since you can seriously scratch the product with a metal one.. The width of such a tool should be identical to the width of the heated spot. Also remember that you need to scrape along the grain of the wood.

The method is mechanical - you couldn’t even dream of a scraper!

Lots of dust, noise and excellent result cleaning - this is how we can briefly describe the mechanical methods of removing old layers of paint. And for this you don’t have to buy expensive tools - you can easily get by with what you already have. For example, buy special sanding flap attachments for an angle grinder or a chain attachment for a drill. The operator must keep electric drill parallel to the wall so that the rotating chain knocks off the paint. This method is becoming increasingly popular because when removing paint, much less dust is created than when processing with a grinder or grinder. In addition, you can make such a nozzle yourself.

It should be taken into account that during operation the links wear out quite quickly and fly off, so for several walls you need to stock up on two or three such attachments at once.

It is quite difficult to process the junctions between walls and floors using mechanical methods, especially if the floor has already been repaired, so cleaning the walls needs to be planned earlier. In such cases, a scraper will come in handy. Do not forget about safety measures - pieces of paint will not harm your hands, but fragments can injure your eyes. When removing layers with a grinder, remember about the dangers of dust, especially if the renovation is taking place in a house where the walls have not been stripped of old paint for 40 years. The fact is that the building standards of that time were not too restrictive on the content of lead, the doses of which in paintwork materials were overestimated several times. By inhaling this dust, you risk serious poisoning! Moreover, all household members will breathe the settled microparticles.

Therefore, if you decide to carry out major renovation, it is better to send everyone at home to relatives, at least until you finish the most dusty work. And to protect yourself, wet the surface before processing so that the moisture inhibits the formation of dust. After completing the work, clean the room, not just with a wet cloth, but with a phosphate-containing cleaning product, for example, dishwashing liquid. One part product to three parts water will be enough to neutralize lead. True, after this you will also have to wash away traces of detergent.

Chemistry versus chemistry – apply, wait, clean up!

Essentially, each colorful composition is created from different chemical reagents. As they say, they knock out a wedge with a wedge - they use it to remove layers of old paint. chemicals, which are applied over it and soften the layers without damaging the surface under the paint! Externally, the action of the washes resembles the action of a hairdryer - Oil paint starts to bubble and peel without the risk of overheating the surface. For the drug to begin to act, it is enough to apply it with a brush or brush to the desired places and wait the time specified in the instructions.

Peeled paint is removed with a regular scraper, however, the product does not always penetrate so deeply as to “lift” all the layers, so sometimes you have to clean the surface in stages. It should also be remembered that on hot surfaces, the removers will evaporate quickly, resulting in a “smeared” effect. In addition, although such compositions are designed for a large number of paints and varnishes, not all paintwork materials from the past begin to react with removers. On the Internet you can find many recipes for homemade removers, which, in addition to various fillers, contain caustic soda.

It is worth noting that this is a strong alkali, which can cause severe burns if it comes into contact with the skin, so if you set out to prepare the wash yourself, be very careful. One of the most simple recipes consists of mixing five kilograms of sifted chalk and the same amount of lime paste, which are diluted to make the putty thick with a 20% caustic soda solution. This paste is applied to the surface with a spatula and, depending on the thickness of the layer, wait half an hour or an hour until it becomes soft enough to be removed with a spatula.

However, based on the experience of ordinary people, this method does not work as well as we would like - caustic soda does not take on too thick layers of old paint. And if you keep the paste longer, it may simply dry out. Therefore, the scope of application of such a wash is quite limited. In addition, after removing the paint layer, the surface must be thoroughly washed with water and a solution of acetic acid to neutralize the alkali - there are too many unnecessary movements compared to mechanical or thermal methods.

Technical hair dryer as a means of cleaning paint

So, the first thing that was tried in this direction was technical hair dryer. I have an inexpensive hair dryer from MAKITA model HG5012K 230V. Industrial hair dryers differ mainly in their heating level.

This is what a technical hair dryer looks like. very similar to the regular one you use to dry your hair, but don't do it :)

This cleaning method turned out to be very time-consuming and labor-intensive. In addition, you cannot remove old putty with a hairdryer. If you need to remove paint from an entire wall measuring, for example, 4 squares, then this operation using a technical hair dryer becomes really difficult. After several attempts, I gave up on this idea and realized that using a technical hair dryer to remove paint can only be done in small volumes on areas within a few square centimeters. I tried various attachments but it did not bring any tangible results.

Hair dryer attachments that were included.

Using a hand scraper to clean paint

Another affordable option- this is the use of a hand scraper, but it is not always possible to scrape off antique, no joke, fifty-year-old paint with oil putty. We managed to scrape off some of the paint, a very small area, with a scraper. After a couple of hours of picking, it became clear that this was also not an effective method for removing old paint. A scraper can effectively remove lime and even putty, but cleaning hardened Soviet paint becomes simply torture.

The green scraper with replaceable blades sucks. The one with wooden handle turned out to be much better. This scraper removed the putty from the ceiling in one of the rooms, but not the paint.

Angle grinder or grinder as a tool for cleaning paint

Those who have an angle grinder, or as it is called an angle grinder, can try to remove the paint using various attachments and grinding the required surface.

Here is a brush cut from hard steel wires. At 10 thousand revolutions it begins to spark and scatter fragments of hot metal.

When using such a nozzle, everything flies around. Don't try to take one that's too big - you'll break the grinder. If you have already decided, then it is better to take a nozzle with a small diameter. This way you will protect yourself and the grinder will not be pulled out of your hands. As a result, the attachment turned out to be ineffective for me, or I don’t know how to use this brush.

A special grinding wheel equipped with 80-grit sandpaper. When used, it heats up to the point of catching fire, but it removes paint efficiently.

The only thing: when buying such a circle, pay attention to the graininess of the sandpaper. I don’t recommend taking less than 40, it will wash quickly and clean slowly. Personally, I didn’t find such wheels with P40 grit, so I tried what I had. Another negative point is a lot of dust. Prepare a respirator and safety glasses.

Another type of abrasive. The nozzle has a rough surface to which they are attached with Velcro. round shape sanding sheets.

The sheets are erased quickly, and after one, as you can see, the nozzle is erased. You won’t notice in time that the circle has worn off, it’s the attachment itself that goes into battle :) It’s unlikely that you’ll be able to quickly sand off the paint with such a device. If you buy abrasive sheets for it or just sandpaper, then buy the maximum thickness.

The wall was sanded, but it turned out to be difficult to remove the paint with such a thing. In some places it is clear that the abrasive has penetrated to the concrete.

And this is my combat angle grinder Metabo. It’s very helpful when cutting grooves in walls for wiring, cutting metal, and in life in general.

Using a drill or hammer drill to remove paint from walls.

If you have a powerful drill, you can try paint remover attachments designed for drills.

An attachment for a drill on which sheets of abrasive material are attached. Fixation occurs due to Velcro. To be honest, this is complete nonsense and in reality such an attachment turns out to be useless. Don't ever buy this one.

You can try this brush. The removal process turns out to be quite effective and high quality. The surface cleans well, but don't think you can clean even a quarter of a square meter in an hour with this brush. Suitable for those who have a lot of time.

Owners of rotary hammers are luckier than their neighbors. Thanks to a special attachment in the form of a spatula, you can quite successfully remove a layer of old paint along with a layer of putty and plaster and concrete :). A square meter per hour is quite realistic. I think the neighbors hated me because I hammered for 2 hours on Saturday.

The attachments were immediately purchased after purchasing the hammer drill. Such gadgets are inexpensive, 100-200 rubles each.

I tormented my neighbors with this attachment and tested their patience, but no one seemed to come running to complain. Everyone was understanding.

I note that after using the hammer drill the wall becomes very unflattering, but the paint is completely removed, and then you can plaster it again and putty.

Grooves for sockets and switches were previously made on the wall. As a result, the wall completely turned into a terrible concrete mess. In one of the following posts I will show how I plastered it.

Alternative ways to remove old paint

And now about alternative ways cleaning walls from old paint. I found videos of another “Kulibin” on YouTube. A man made an attachment for a hammer drill in the form of chains. With the help of such a nozzle, he knocks off paint and, judging by its appearance, it turns out quite effectively. See for yourself:

By the way, this paint was purchased and tested.

IN next video You can see other types of removing old paint.

And this is a milling machine.

That's all. Good luck with the repair.

Ways to clean bathroom walls from paint, practical guide. Analysis of the situation, methods, recommendations for choosing tools, description of the technology for removing paint coating.

The task of cleaning bathroom walls from paint is not as simple as it might seem at first glance. For those who are doing this for the first time, the wrong approach to solving this task turns cleaning the wall surface into an extremely time-consuming and ineffective process. Dismantling work, contrary to popular belief, also requires certain skills, special training and considerable effort.

At home, there are two ways to remove paint from bathroom walls: chemical and mechanical. The chemical method consists of using special construction removers, which sufficient quantity produced both foreign and domestic producers. Such removers do an excellent job on metal substrates, are good on wood, but show rather mediocre results on wall materials.

Removers for removing paint from bathroom walls are not widely used in everyday life. However, you shouldn’t completely discount it this method cleaning. It can help you out in restricted areas where use hand tools difficult. The composition is applied to the surface using a brush. After a few minutes, the paint will begin to turn into a jelly-like state. To remove it, a regular spatula is enough. It doesn't require much effort. If you are dealing with a wall that is painted in several layers, the procedure will need to be repeated several times.

Mechanical cleaning of walls - theory and practice

For mechanical cleaning To remove paint from bathroom walls, use primitive hand tools or power tools. It makes sense to use a primitive hand tool if the paint coating is in poor condition, which is manifested by the presence of swelling, cracks or peeling. In this case, they will help you:

axe;
scraper for removing decorative coatings;
cycle;
plane blade;
any available tool with a wide sharp edge.

Of the listed tools, a scraper is the least suitable, as it removes paint thin layer and gets dull quickly. You can easily purchase a scraper for removing decorative coatings at a hardware store; it is inexpensive.

In addition to the condition of the paint coating, an important parameter when choosing a tool is the presence, thickness and condition of the putty underneath. A layer of unprimed gypsum putty can be relatively easily removed from the wall along with the paint. If before painting the wall was well primed, and the putty layer was completely saturated with soil, then effective application primitive hand tools will most likely become impossible.

The worst case scenario is when the paint is applied to concrete base or well executed cement-sand plaster, where the putty layer is minimal. It is very difficult to clean such a surface. In this case, you should not even think about using primitive tools. This is a huge effort with minimal results. Arm yourself with power tools.

Removing paint using a drill

To remove a layer of paint from a wall, you can use the following power tools:

drill;
perforator;
angle grinder (grinder);
construction hairdryer

In order to remove paint from the bathroom walls using a drill, you will need a device that was invented by folk craftsmen and came into use relatively recently. Official name this device does not have. It is a metal rod, at the end of which, at an equal angular distance, three chains of several links are attached. The other end of the rod is fixed in the drill chuck.

By installing the device and turning on the drill, you will unwind the chains, thereby bringing the device into working condition. The result will be something similar to a propeller, but with flexible blades. These “blades” are working part tool. A series of strong and consistent blows will knock the paint off the wall. A minimum of muscular effort and a completely acceptable result. The device has been tested, found to be quite effective and adopted by master builders.

Be careful! During operation, the chain links fray. If you do not remove the worn link in time, it will come off during operation. Be sure to protect your face. Anything that can break must be removed from the premises or protected. You cannot remove a link from just one chain. The number of links on all chains must be the same, otherwise the balance will be disrupted and it will become impossible to operate the tool.

Removing paint from a wall with a drill with a guarantee

If the condition of the painted surface described above is in the worst case, the chain attachment may not be effective for removing the paint layer. In this case, you need to use another option. Brick bit for drilling through holes large diameter will cope with any task. It is important to dose the effort correctly. The crown must clean upper layer, but do not go too deep so that you can guide the drill along the surface.

Naturally than larger diameter crowns, the faster you will clean the wall surface. Due to the high speed of rotation and the very principle of operation of the bit, be prepared for the formation of dust. Protect your eyes and respiratory system. This method is effective, quite fast and shows a good final result.

Cleaning walls with a hammer drill

The hammer drill offers three ways to remove paint from bathroom walls. In the most difficult situation, as in the case of a drill, a bit for brick or concrete will help you. The operating principle is the same. If you do not have a crown, you can use a spatula, which is included in the standard hammer drill kit.

Hold the hammer drill at right angles to the wall. Measure the effort and speed of the battle. The blows should be strong but shallow so that you can move the tool. Don't be discouraged if it doesn't work out at first. The main thing here is to “catch the wave”, show persistence and very soon you will acquire the necessary skill. A hammer drill will easily break a layer of petrified putty or multiple layers of paint. This method is practiced big number masters

The third method of using a hammer drill is again offered to us by folk craftsmen. You can look for a special spatula. It is shorter, wider and sharper than the standard blade included in the kit. With it, the hammer drill is held at an acute angle to the wall. Thus, the coating is not broken, but cleaned off. The method is effective, but not very common due to the fact that the previous two methods fully solve the problem of removing paint from any wall. But to know about this alternative will not be superfluous.

Grinder - effective cleaning of walls from paint

Corner Grinder or Bulgarian – very effective tool to remove a layer of paint from a bathroom wall. To do this, you need to use a segmented disk for working on stone, concrete, and porcelain stoneware. Different grinding discs will not be effective. Flap discs for grinding quickly become clogged with dust, discs based on sandpaper Enough for literally a couple of minutes of work.

Hold the grinder at an acute angle to the surface and make movements from top to bottom. Unfortunately, this method has a huge drawback. You have to pay for efficiency and there will be a lot of dust. You will have to work in a gas mask. But if you are prepared for a lot of dust, then clean the wall quickly and without much effort.

Professionals use diamond blade in the shape of a bowl. This allows you to use the entire working surface of the disk. One square meter The walls are cleaned in just a few minutes in perfect quality. To do this, you need an angle grinder with a dust removal function and a construction vacuum cleaner.

Alternative Methods

There is no need to explain how to use a hair dryer. With its help, you can remove paint from bathroom walls quite easily. The method is not fast, but simple and effective. The only catch is that the hair dryer is a specific tool and is practically not found in the arsenal of home tools.

Another method that professionals use is a gas burner. With its help, I heat a surface area and easily clean it with a regular spatula. This method is also not always available to those who do the repairs themselves, but if you have access to a gas burner and a partner, you can clean the surface quite easily. Remember that you are dealing with an open flame, so gas burner must be handled with extreme caution.