How to quickly remove paint from a concrete wall?

Painting the walls is a rational and cheap way to update the look of the room. The paint is easy to wash off dirt, well withstands sunlight, prevents the appearance of fungus on the concrete wall and does not let moisture through. But due to the fact that it is strongly absorbed into the material being painted, it is not so easy to remove part of the coating in need of repair.

It is necessary to familiarize yourself with the methods of removing the paint coating in advance.

Handwork

Painting during the repair does not touch only when the cladding walls plasterboard sheets or similar material. Decorating an unprepared surface with wallpaper or ceramic tile will fail. The material will quickly move away with the paint from the concrete walls., which will lead to the alteration of all repairs and to an extra cost of time and money.

One of the ways is manual, it is rather laborious and noisy, it requires the use of a spatula, a hammer or a hatchet. But the result of such work can please, the walls acquire a flat and clean surface. With such work it is better to use a ground tool, it will even facilitate the work.

With a hatchet or a pointed side of the hammer, they cut through shallow serifs at a short distance from each other. It is necessary to knock gently, so as not to hook on the wall. Thus, it is likely that part of the finish will disappear by itself, and the remaining coating can be scraped off with a spatula. If this does not happen, then continue the above steps.

The layer damaged as a result of the previous stage of work is soaked with water. Can for a better effect, make a solution with salt or wallpaper glue and apply it with a roller on the surface. It is necessary to wait for the solution to absorb and start the softening of the concrete. It will take about five hours..

When the paint starts to peel off, it can be removed. An unnecessary finish is picked up with a spatula or similar device and is separated from the concrete surface.It is easily removed in various size layers. The liberated walls are cleaned with hard sponges or sandpaper with a large grain. Then it is well dried, and only then it is primed and starts the finishing work..

If the tool is well sharpened, then you can do without soaking the finish. It will be easier to simply cut off the old coating from concrete if the finishing was made in several layers. But this option will get longer and time consuming.

It is possible to speed up the process a little, if you choose a tool with rounded corners, this shape of the tip comes under the finish layer more easily.

Using power tools

Among the construction tools you can choose to remove the paint the following devices:

  • Perforator. If you use a perforator, then remove the coating from the surface of the concrete will be much faster. It is necessary to choose the widest nozzle in the form of a scraper to speed up the process and carry out the work, holding the tool with an inclination of 90 °.

The angle can be made a little smaller, but it is not recommended to increase it.

Before this, it is necessary to adjust the perforation power by selecting a mode in which the wall itself will not be damaged.Now you can safely knock down the old coating. Strong tool noise is a disadvantage of this method.

  • Bulgarian or grinding machine. Another device that can help in this work is the Bulgarian. With it, you can remove even very absorbed paint coating. The brush disc will not only remove paint, but at the same time level and prepare the surface for further work.

But this option can be used in a well-ventilated area due to the large amount of dust raised by the instrument. And even in such rooms it is necessary to take breaks, wet the floor and spray water to settle the dust. You can use a grinder instead of a grinder, it is less noisy, but more dangerous.

The work of the power tool has to be supplemented with a manual version, since such devices will not be able to remove the paint in hard to reach places. In these areas used spatula. If the surface after cleaning was not as smooth as you would like, then it's okay, you can fix everything with a primer.

  • Drill. To tear off the paint using a drill, you must have at least one of the following nozzles available:
    • A nozzle consisting of three chains stuck to the stem, which is inserted into the drill. The advantages of this device: the paint is removed in small areas, does not raise dust, does not damage the base. The disadvantage is that the nozzle wears out quickly.
    • Brush Disc Nozzle raises a lot of dust, but the result of her work is very effective.
    • Crown nozzle Great for concrete foundations. It does not form much dust. The work takes a lot of time and effort, but the result of high quality covers this drawback.
  • Construction dryer. This is the most silent option. This device not only creates little noise, but also gives an effective result. Such a device is very functional and not very expensive. But in order to remove any paint from a solid surface, it will take not so much time, so it is inexpedient to acquire the device especially for this. You can take it from someone for temporary use.

This unit needs to heat up the painted area. The paintwork is heated to such an extent that it begins to melt and swell, as a result, it exfoliates from the substrate.After this procedure, the swollen coating is removed with a spatula; it is removed in rather large parts. This allows you to perform work in the shortest possible time.

  • Preheat the paintwork even with a blowtorch. Actions during the cleaning are similar to the work of a hair dryer, but here it is necessary to prevent the fire from burning. Some use the iron, the action takes place through the baking foil.

The appliance is turned on at maximum power and left to full. A sheet of foil is glued to painted concrete and the wall is ironed through it. After removing the foil, clean the softened layer with a tool (with an ax or spatula).

Chemical method

Now in any hardware store there is a variety of special paint removers on offer. By applying one of them, you can quickly and silently repair. Be sure to purchase protective gear with these products to prevent burns and poisoning.

Working with chemicals is simple:

  • Not sparing the drug, the roller should be applied to the required area. It is necessary to do this once, the second time the same area is not recommended to coat.Before that, it is good to cover the floor and baseboard with unnecessary materials (newspapers or film). It is necessary to work carefully, without splashing the solution.
  • The paint will quickly limp and be easily removed. Removed coating stiff brush.
  • In uncleaned places, repeat the procedure.
  • Cleaned surface should be thoroughly washed with water, you can with detergents.

Due to the toxicity of the drugs, it is impossible to work indoors. This can lead to sad consequences.

You can also use a homemade tool. You will need:

  • quicklime;
  • soda ash;
  • water.

    This mixture is brought to a dense homogeneous state. Paste coat the painted concrete surface. In half a day paint residues scraped from the plane.

    Acrylic based finishes are removed with liquid soap with the addition of hydrogen peroxide or ethyl alcohol. Chlorine solution will corrode latex base.

    You can remove the paint with liquid glass.: it is applied with a thin layer on a wall of concrete, after it is necessary to allow the substance to dry. Spatula rip off the glass with paint.

    If the coloring was made no more than three years ago with a water-based substance, then wallpaper glue can be used to get rid of it.Old unused paper products are glued to the surface and after drying they are torn off along with the paint.

    There are many options for removing paint from concrete walls. However, they are simple, cheap and do not require much time. But for some of them a certain skill is needed. And the most important thing is to adhere to safety instructions. No need to sacrifice your health for a beautiful repair.

    Security measures

    Since in such works there are factors that can harm health, then you need to apply some precautions:

    • Use rubber or construction gloves for any of the above work methods.
    • When using sharp objects (hatchet, spatulas), care should be taken to avoid cuts.
    • Use respirators and goggles when working in dusty environments and using chemical agents to protect your eyes and nasopharynx from burns, and to avoid poisoning.
    • All repairs should be carried out in a well-ventilated area and make breathing space in the open air, with dizziness, stop working.
    • You must handle fire with extreme caution to prevent unwanted effects. Do not use a blowtorch near flammable objects, do not leave a working tool unattended.
    • The use of electric tools can be found in the documents attached to them. If they are available, then follow the basic rules of precaution, such as observing the accuracy of the rotating parts of the devices, preventing the ingress of moisture on them.
    • Repair in a convenient form of clothing. It should be spacious, but unduly not hang, especially in the area of ​​the sleeves.
    • Do not experiment with chemicals; use proven methods or recommendations from reliable sources.

    Oil or other paint is not difficult to remove, if you follow the proven advice.

    One way to remove paint from a concrete wall is in the next video.

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