Methods and means to remove old paint from heating batteries

Although it may seem difficult, removing old paint from heating batteries is a crucial step in maintaining the best possible function and aesthetics for your radiators. Paint layers can peel, chip, and crack with time, giving an ugly appearance and possibly preventing heat distribution. Fortunately, there are numerous techniques and resources at your disposal to assist you in completing this task successfully.

The use of chemical paint strippers is one of the most widely used methods for paint removal. These goods are meant to dissolve the paint so that it can be scraped off more easily. However, because chemical strippers can be abrasive and potentially dangerous, it is imperative to adhere to safety precautions when using them. Always use good ventilation when working, and put on safety gear like goggles and gloves.

For those who want to take a more eco-friendly approach, mechanical methods may be the best option. Paint can be physically removed with sanding and scraping tools, but they take more time and effort. You can expedite the process by using an electric sander, but take care not to scratch the heating battery’s surface. Different-sized and shaped scrapers come in handy as well for accessing difficult-to-reach places.

Another useful tool for removing paint is a heat gun. When intense heat is applied to a painted surface, the paint becomes softer and more easily removed with a scraper. Older, thicker paint layers are a good fit for this technique. But be aware that if you use the radiator carelessly, you run the risk of damaging its finish and inhaling fumes.

Whatever approach you select, getting ready is essential. Before starting, make sure the radiators are cool and the heating system is off. To keep mess and debris out of the area, cover it. You can successfully remove old paint from your heating batteries to give them a new look and a cleaner, more appealing appearance with the right tools and a little work.

Preparation for the removal of paint

Before beginning the repair, when the walls and floor have already been prepped, it is advised that the battery be cleaned. It is advised to cover any adjacent surfaces with paper or plastic wrap if the paint removal is done after the repair is finished. Chemicals, dust, and hot air will damage coatings if this isn’t done.

Paint removal requires the following equipment and tools:

  • metal spatula;
  • brush with wire bristles;
  • rags or unnecessary rags.

Counseling! To remove the paint there, it is more accurate to take the battery out and place it outside in the open air.

Regardless of the method used to remove the paintwork, you must consider your personal safety. Given that you will be handling a solvent, rubber or thick fabric gloves are required. We require respirators and safety glasses.

Turn off the heating system before removing the previous coat of paint. Applying chemical reagents to clean a hot radiator can be hazardous in addition to being ineffectual.

If the proper tools and techniques are used, removing old paint from heating batteries can be a simple task. Prior to selecting between chemical paint strippers, heat guns, or mechanical techniques like sanding and scraping, determine the kind and condition of the paint. For thick, stubborn layers, chemical strippers work well, but they need to be used with the right safety equipment and ventilation. Heat guns make paint easier to scrape off, but they should be handled carefully to prevent breaking metal or starting a fire. Although labor-intensive, mechanical methods provide precise control, which makes them perfect for areas that are delicate or detailed. Wearing safety gear and operating in an area with adequate ventilation are two ways you can always put safety first.

Ways to remove paint

Chemical version

Many different chemicals are available for purchase to remove old paint from surfaces.

Although chemists are produced in a variety of concentrations, all liquids can be conditionally classified into two categories:

  • aerosols;
  • Liquid compositions.

Liquid washing is advised for plate radiators. The radiator is used for 15 to 20 minutes at first. A metal brush is used to clean the remaining enamel after the coating starts to bubble. The enamel is removed using a spatula. Using a rag, the surface is completely cleaned at the conclusion.

Take note: Paint removal chemicals should not be stored in plastic containers. It is advised to use the glass container if you must pour the liquid out of the factory packaging. The container should be disposed of after the job is finished and it is no longer needed.

Chemical cleaning works best on radiators painted in one or two layers. Every layer on the metal must be removed individually if there are eight or ten of them. The outcome will require a significant amount of time and work.

For multi-layer coatings, it is advised to forgo chemical cleaning due to the risks associated with chemical handling.

Rubber intersection pads can be destroyed by the compositions, which is another aspect of washing work. Consequently, the radiator will continue. In light of the aforementioned, it is not recommended to apply a solvent to the joints.


Aerosols are a type of chemical paint remover. The most practical chemicals to use for cleaning cast-iron batteries are aerosol ones. Spray makes it possible to reach difficult-to-reach places.

Note: Clear the workspace of any plastic or rubber objects before applying the chemical composition to the metal. Paul needs an oilcloth to protect him.

Instructions for metal purification using aerosol:

  1. Spray aerosol on the surface. For processing the radiator (its external and outer part), one spray is enough.
  2. After about 15 to 30 minutes, the finishing layer will be covered with bubbles. The reaction rate depends on the air temperature.
  3. Remove the loose layer of paint from the battery. Cleaning batteries from old loose paint is easiest with a metal brush.

It is advised to repeat the cleaning after a while if the paint and varnishes were not removed during the first process.

Thermal method

The method involves using hot air from an industrial hair dryer to heat the enamel layer. The coating peels off the metal as a result of heating. To remove the worn-out coating, use a metal brush or spatula.

Nonetheless, using a hairdryer to remove multiple coats of paint is not the ideal solution. Using a soldering lamp in this situation is advised as it will swiftly bring the previous paint layer to a boil. Since hazardous materials will be released into the environment, the work should be done outside while wearing protective gear.

Mechanical method

This cleaning technique is the simplest to use, but it also requires a lot of time to complete. Eliminating paint residue from hard-to-reach areas, like battery ribs, is particularly challenging.

The process of mechanical cleaning involves using a metal tool (spatula, brush, electric drill, angular grinding machine) to remove an enamel layer. Another option is coarse-grained sandpaper.

It is advised to use specialized tools (like a drill wire brush) to clean the embossed surfaces of cast-iron batteries.

Prior to beginning mechanical cleaning, it is advised that you consider your personal safety. Dust and a great deal of tiny particles are separated while the coating is being cleaned. Put on protective goggles, gloves, and a respirator to keep yourself safe. It is best to leave the room’s windows open and to close all of the doors leading to nearby rooms.

Note: It is not advisable to apply chemical treatments to the surfaces right before the paintwork is mechanically removed.

Removal of powder colors

Removing the powder coating from the cast-iron battery is far more difficult than removing the old paint, even if the former is not too tough. It is obvious that the smooth polymer surface will hinder good paint adhesion.

There is only one appropriate way to solve the issue:

  1. Partial removal of the paintwork using coarse -grained sandpaper.
  2. Surface priming.

White spirit or any other solvent must be used to degrease the surface before removing a glossy coating. The next course of action is contingent upon the type of new coating. For instance, a bare metallic base can be painted with silicone or heat-resistant enamels; however, in order to guarantee adherence, an alkyd or acrylic paint job requires a well-prepared base.

Counseling! In any case, it is advised to prime the base because doing so will increase the coating’s operational life.

GF-021 is the most widely used primer brand. Prior to applying paints based on acrylates and alkyd resins, such soil is used. The most common color of GF-021 is reddish-brown, but this brand is also available in gray primer.

Method Means
Scraping Paint scraper or putty knife
Sanding Sandpaper or electric sander
Chemical Stripping Paint remover or solvent
Heat Gun Electric heat gun
Pressure Washing High-pressure washer

Heating batteries can be made to look and function much better by scraping off old paint. There are several approaches, each with pros and cons of their own. The best course of action will depend on the particulars of the case, such as the paint type and battery condition.

Sanding and scraping are examples of mechanical techniques that work well for small areas or light paint buildup. These methods can produce amazing results, but they also take time and physical work. Chemical paint removers may be more effective for larger areas or paint layers with more layers. They dissolve the paint, which facilitates removal with a cloth. To reduce health risks, it’s critical to use these chemicals in well-ventilated areas and in accordance with safety instructions.

Another option is to use heat guns, especially for old, tough paint. Heat causes the paint to soften, making it easier to scrape off. To avoid burns or damaging the heating battery, use caution when using this method. Sometimes the best course of action is to combine different techniques, such as applying heat or chemical treatments first, followed by mechanical cleanup.

Regardless of the approach you select, it is imperative that you adequately prepare and exercise caution. Throughout the process, take precautions, make sure there is enough ventilation, and exercise patience. You can give your heating batteries a new lease on life by carefully scraping off old paint, which will enhance both their appearance and performance.

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Maria Vlasova

Chemist-technologist, expert on paint and varnish materials. I will help you figure out the compositions of paints, their characteristics and choose the best option for your purposes.

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