If earlier heating radiators almost always had a standard shape and white color, then on the modern market there is a fairly wide variety of coloring compositions, with the help of which the elements of the heating system can be given any desired color, which will allow them to suitably fit into the interior of the room.
Preparing the surface of radiators for painting
Before proceeding with the choice of paint and its color, the surface of the radiators must be properly prepared to ensure the highest adhesion of the paint to the surface, which will ensure the durability of the applied coating. After all, the applied layer of paint will be exposed to high temperatures and sharp temperature changes. And if the surface is not prepared correctly, then any paintwork will very quickly begin to deteriorate and flake off.
The surface of the radiator must first be thoroughly cleaned of dust and dirt, eliminated the existing defects, and also, if possible, sanded (the surface of only cast-iron radiators should be sanded, and aluminum or steel models cannot be subjected to it, since the enamel layer on their surface has a small thickness ). After that, a layer of primer is applied to the surface.
Priming is a key stage in surface preparation, because it is she who will act as a base for applying paint. It is best to use an alkyd-based primer for this purpose. It is imperative to pay attention to the fact that the composition has anti-corrosion properties, because otherwise the paint will be quickly destroyed due to the formation of foci of rust. You should also pay attention to the fact that there are pigmented primers on the market, which play the role of a primer and a coloring composition, and which will significantly simplify and speed up your work.
Choosing paint for radiators
When choosing paint for radiators, you should pay attention to its properties, because the composition you have chosen will be exposed to aggressive conditions of use, and it must be resistant to their effects, otherwise it will not be able to serve for a sufficiently long period. When choosing, you should pay attention to factors such as its resistance to high temperatures and temperature extremes, moisture, as well as mechanical strength and resistance to mechanical shock.
Previously, oil paints were most often used for this purpose, but recently, due to the presence of a number of shortcomings, a worthy alternative has appeared. These are acrylic enamels based on organic solvents, alkyd-based enamels, as well as water-dispersible acrylic compounds. Each of the types has certain advantages and disadvantages, and each of them is well suited for solving the task at hand.
Alkyd enamels are characterized by high strength and resistance to high temperatures, as well as uniformity of the application layer. However, after applying such material, a persistent chemical smell remains in the room for several days. When the heating network is operating, it can increase.
Water-dispersion compositions are devoid of such a drawback as the pungent smell inherent in alkyd and acrylic enamels, because they are made on the basis of water and do not contain organic solvents, therefore they have practically no smell. However, when choosing them, you should pay attention to the fact that there is a special mark on their packaging indicating that they are suitable for painting radiators and heating pipes. This paint is easy to apply to the surface and dries quickly.
If we talk about solvent-based acrylic enamels, they give any surface a glossy shine and any desired color, and also keep them for several decades. However, they, like alkyd enamels, have a pungent chemical odor.
When, how and how to apply the paint
Remember that pipes can be painted only if the heating system is off and their temperature is at room temperature. Also, even before carrying out work, you need to protect the floor covering from possible traces of paint on it. To do this, you need to lay a layer of paper or old fabric under the radiator.
Direct paint application can be carried out either with a medium or small-sized soft bristle brush, or with a spray gun, because only with the help of such tools you can achieve high-quality staining of all, even hard-to-reach surfaces. As a rule, the coloring composition is applied in two thin layers, which allows to ensure perfect evenness and high strength of the paint layer.