The process of painting a heating radiator is often accompanied by the question of whether it is possible to paint the radiator with acrylic paint. Is it possible to paint hot batteries? What paint and varnish product is better to choose for a heating radiator?
Painting the heat exchanger is often an essential part of a renovation, although it can simply be a design move to bring a pop of color into the home. They are also tinted as the current top painted layer wears out, or they are simply painted with patterns on top of the existing one. Regardless of the type and volume of work, it is better to approach the choice of means responsibly.
The importance of preparation
As in any serious matter related to repairs, the main attention should first be paid to proper preparation for this process. Otherwise, the result may turn out much worse than expected.
Timing
The preparatory procedures last even longer than the painting itself.
The first thing to remember is that all work on painting radiators should be carried out after the end of the heating season. Otherwise, it will be very difficult to achieve excellent results.
If this is not possible, then you need to at least turn off the hot water. You can contact the housing office specialists for help. When the batteries have cooled down noticeably, it's time to start working.
Cleaning
Before applying paint, all surfaces should be cleaned of dust and accumulated grease.
Radiators are no exception. To remove dust, you can:
- Use dry cleaning. To do this, you need a hand-held vacuum cleaner or a regular brush/rag/sponge.
- Use wet cleaning with water and a sponge.
Fat accumulated on the battery must also be cleaned. To get rid of it, just use regular dishwashing detergent and a sponge. After the battery has been washed, you need to leave it to dry.
Removing peeling paint
There are several ways to clean a radiator from paint that has peeled off and peeled off over time.
Brush
It is quite possible to remove old paint using a metal scraper. But this is a very labor-intensive process and will take a long time. Of course, if there is no alternative, this method will be quite useful.
Bulgarian
A grinder with a special attachment (in the form of a metal brush) will greatly simplify and speed up the process of cleaning the old layer.
Expert opinion
Grebnev Vadim Savelievich
Heating system installer
When using an angle grinder, you need to control the operation at high speeds. It is very easy to damage the surface of the radiator along with the paint layer.
Removing all coating is not optional. It will be enough to get rid of the cracked areas.
Chemicals
Using special chemical compounds, it is very easy to wash off the old paint from the radiator.
There are several types of such solvents:
- Gels and pastes. Such compositions must be applied directly to the battery using a brush (with natural bristles). Then you need to leave them on the radiator for the required time. For different media it may
vary from a few minutes to several hours. To make the effect even better, you can cover the battery with the chemical composition with a polyethylene film. When the paint softens, all you need to do is remove it from the battery using a spatula or brush. - Sprays and aerosols . Such substances are very convenient to apply to the battery, even to the most inaccessible areas. After a few minutes to an hour, they begin to actively act and soften the paint. After that, you can simply remove it with a brush.
Working with chemical compounds is not safe. Due to fumes, procedures must be carried out in a ventilated area. During work, it is imperative to use goggles and gloves, and, if possible, a protective respirator. Before use, it is a good idea to make sure that the metal from which the radiator is made will not react with the chemical composition, otherwise the surface of the battery may be damaged.
Padding
Once the old paint has been successfully removed from the surface, the radiator should be primed well. This process is used to remove minor imperfections, scratches and cracks. It is better to treat batteries made of steel or copper with sandpaper, and cast iron with a regular metal brush. Then the battery needs to be degreased again and proceed to the primer itself.
The composition for the primer must combine the following characteristics:
- Designed for metal surfaces.
- Protect from rust.
- Be compatible with paint.
Is it possible to paint hot heating pipes in an apartment using a non-professional tool?
A spray gun or other special tool is not required for this, so any untrained person can cope with this task. The main thing is to have a clear understanding of the technology and choose exactly the option that is suitable in a particular case. After all, today there are many materials from which pipes are made - copper, ferrous metal, metal-plastic, polypropylene, etc.
Let’s immediately single out two categories (iron and polymer) so as not to describe the same thing several times, since the technologies for painting pipes made of ferrous metal and copper are identical. The same applies to polypropylene and metal-plastic. But in any case, you need to use only special paint for hot pipes.
Painting
The painting process is actually not particularly difficult. But buying the first paint that comes to hand will still not be enough. There are special requirements for paint coating for batteries
Expert opinion
Grebnev Vadim Savelievich
Heating system installer
There are special compounds on sale that are designed specifically for coating radiators. But if for some reason they could not be found and purchased, you should pay special attention to the contents of the label.
The paint requirements are as follows:
- Heat resistance. It must withstand temperatures up to 100°C.
- Adhesion. The paint must adhere and not peel off when the temperature changes.
- Long lasting color fastness.
- Anti-corrosion. Such components provide protection to the radiator housing.
- No harmful ingredients.
Correct priming of heating devices
Between removing the old paint and actually painting the radiator, a number of additional steps must be performed.
Firstly, the surface requires careful cleaning with sandpaper. This allows you to eliminate minor flaws, cracks and scratches. It is recommended to treat old cast iron batteries with a wire brush.
Secondly, it is necessary to degrease and prime the radiator surface. When choosing a primer, it is important to pay attention to its compatibility with the paint that will be used to paint heating appliances. In addition, priming should be done with a composition designed for working with metal.
Battery paints
There are several types of paints suitable for radiators.
Serebryanka
This coloring composition is a mixture of aluminum powder and varnish. The paint can be applied over the primer and over the old coating. But the composition smells sharp and unpleasant. Therefore, it is imperative to ventilate the room.
You can buy silverware ready-made, or you can make it yourself. To do this, mix aluminum powder and varnish in a ratio of 2 to 5. It is important to know that aluminum powder is explosive. Therefore, you should not resort to this method in homes with small children or flammable structures.
Acrylic
Acrylic paints have some advantages:
They do not smell and do not contain harmful substances, so they are completely safe for use.- Dries quickly. At temperatures of 18-25 degrees, the coating dries within half an hour.
- They are resistant to various external influences and are water-repellent.
- Resistant to high temperatures and temperature changes.
- Retains a decent appearance for 7 years.
Alkyd
These paints also have advantages:
- They have excellent heat resistance and are suitable for painting radiators.
- More durable than acrylic.
- Contains anti-corrosion substances.
- They fit perfectly.
As for their disadvantages:
- Since their base is not aqueous, the solvent has a very unpleasant, pungent odor that can last for a whole day.
- Compared to acrylics they dry quite slowly.
- You can use such compositions only in ventilated areas so that the smell does not create problems.
- They do not retain the original color for too long.
Silicate
These paints are great for high temperatures. In addition, when choosing such a paint, the battery does not need to be primed first. They hold firm and fit perfectly on the surface. A noticeable drawback of such paints is a strong, unpleasant odor.
Hammer
This unusual type of paint got its name because when processed, the surface turns out to be rough. They perfectly mask imperfections in the surface of batteries. They can be safely chosen by owners of old Soviet cast iron batteries.
Useful tips
Even without special skills, anyone can beautifully paint a heating radiator if they take into account the recommendations and some rules. There are some simple tips from experts:
- there should be no drips on the painted surface - to do this, you need to apply the paint in as thin a layer as possible, making smooth movements;
- It is more convenient to paint the back surface of the battery with a curved brush or toothbrush;
- When cleaning the device using a chemical method, you must adhere to the rules of personal protection;
- upon completion of painting work using any paint, the room should be ventilated, but it is better to use odorless paints;
- hidden heating elements and pipes do not need to be painted, this will ensure better heat transfer;
- Before purchasing paints and varnishes, you need to carefully study their characteristics.
There is no need to worry about whether heating radiators can be painted while they are hot. Modern materials can withstand fairly high temperatures without losing their properties. If you follow all the rules for preparing and painting the radiator, you can achieve the feeling of purchasing a new battery.
How you can paint hot radiators and what kind of paint to do it with - everyone decides for themselves. To the question of whether it is possible to paint batteries with acrylic paint, you can confidently answer in the affirmative.
Painting process
Step by step guide to dyeing batteries:
- Turn off the heating and ventilate the room . It's worth waiting until it gets cold to prevent the paint from dripping. You should also make sure that the room is well ventilated. If you need to open several windows when the heating is turned off, then such a temporary cooling is still better than possible health problems associated with toxic paint composition.
- Clean the area around the radiator . It's best to use a vacuum cleaner to remove dust, hair, and anything that might stick to the paint. Then put any covering on the floor that you have at hand to prevent drops and splashes of paint.
- Apply (or spray) paint, ensuring that the layer is even . First of all, you need to paint the batteries inside, and then move on to the outside. Sections should be painted from top to bottom, otherwise the paint will fall on the already painted parts. If possible, it is better to avoid “overloading” the brush. If there is too much paint on the brush, it will cause drips and clumps.
- Wait , if necessary, apply another layer.
You must wait until the paint has completely dried. It is possible that the radiator may need another coat of paint once dry, but this is entirely dependent on the application process, the paint and the radiator. Most often, two coats are required for even painting. Moreover, two thin layers are better than one thick one. The second coat of paint is applied only after the previous one has completely dried.
The drying time of the paint is always indicated on the label.
Aluminum batteries
Unfortunately, it is almost impossible to paint batteries made of aluminum or bimetal at home yourself. Such products are painted in factories using a special powder dye. It is applied using special equipment, and it is impossible to repeat this procedure at home.
Expert opinion
Grebnev Vadim Savelievich
Heating system installer
Photo printing can be used to restore the aesthetic qualities of aluminum batteries. The photographic image is attached to the outside of the batteries. It tolerates high temperatures and extremes very well.
Questions and answers
Is it possible to add color to the paint if you are not satisfied with the originally acquired shade?
It is possible, but the color must match the characteristics of the type of paint.
Is it possible to paint heating pipes?
Yes, but also not with ordinary paint, but with special heat-resistant paint.
Is it necessary to turn off the heating when painting?
On hot surfaces, the unpleasant odor of some paints noticeably intensifies. Therefore, it is better not to carry out such repair work during the heating season.
Do I have to remove the batteries when spray painting a wall?
It is not necessary to remove it, but it is advisable. Because spraying will damage the appearance of the adjacent wall.
Why can't you use regular everyday paint?
Batteries constantly heat up and cool down, which weakens the paint.
