Previously, the ability to paint metal surfaces with water-dispersion paint seemed unrealistic. After all, iron – the most popular metal – oxidized in the presence of water in a fairly short time, and here is paint based on it. As a rule, such paints are not used for such purposes..
In these cases, special coatings are used that create good protection, with good adhesion to metal and with anti-corrosion properties..
Scientists were far from immediately able to solve these problems. At the moment, European countries have advanced in this regard to such an extent that water-based paints are used in industries such as shipbuilding and automotive. But now we will not go into these areas, but consider the possibility of using such paints in construction.
Perhaps it is worth starting from the roof, as from the most difficult moment.
By the material used, roofs can be divided into three groups.
The first will contain black iron, the second will contain galvanized iron, and the third will contain non-ferrous metals such as copper, aluminum with its alloys, etc..
Due to the high cost, and therefore the rarity, we will not consider the third group.
But the first and second are more affordable, although the price for them is higher than for the same slate.
As you know, black iron must be covered with paint. As a rule, alkyd and oil paints are used in Russia..
Those who like the painting process can continue to use them. For those who do not have such a predilection, we can recommend acrylic water-dispersion enamels for roofs with an anti-corrosion effect. Such paint costs a little more than alkyd or oil paint, but it will last much longer on the surface. As a result of temperature fluctuations, the metal undergoes strong deformations, therefore it should be noted that the acrylic coating is not only durable, but also does not lose its elasticity.
But with alkyd or oil paints, elasticity is a problem. Not only is it less than that of acrylics, it also decreases over time, and as a result, it completely exfoliates from the metal surface.
Painting a galvanized roof is an ambiguous task. Galvanizing will perfectly protect the iron for 10-15 years, but after that it is imperative to paint the roof. Of course, it is better to cover even a freshly galvanized roof with a layer of paint, as a result of which it will last longer and the roof will look more attractive. Galvanized iron enters into less chemical reactions than ordinary black, so you need to choose a special material with even greater elasticity and adhesion than in the case of black iron.
Alkyd and oil paints are completely unsuitable for galvanized surfaces, because they serve on such surfaces for no more than one season, but special acrylic enamel will adhere perfectly to it for many years.
In order to get a cheap analogue of metal tiles, you can corrugate an iron sheet in a special way, and then paint it with anti-corrosion acrylic enamel.
One organization, using this advice, successfully sells such corrugated sheets, thereby competing with imported counterparts..
During the creation of water-dispersion paints, we could not even imagine how rich the range of their use would be. For example, they have no equal when painting all kinds of fire and explosive objects. Any solvent-based paints burn well, and the vapors emitted by them are generally explosive. When painting an ordinary object, it is not so scary, but when it comes to premises such as a gas storage or oil storage, it becomes scary. From any, even a tiny spark, and not something from a cigarette butt, the object, along with the painters, will simply fly into the air. In this respect, water-dispersible materials are completely safe..
There is an excellent experience in painting such metal structures and structures as garages, gates, hangars, fences, as well as railway cars and trucks.
A little rust doesn’t hurt here. With the help of anti-corrosion additives, not only the limitation of the spread of rust is achieved, but also the modification of the existing.
If the rust has managed to spread over a large area of the metal product, then after using a special anti-corrosion acrylic primer that converts rust, painting can be carried out. And all this – with maximum convenience, quickly and without smell.
If you decide to paint something metallic, you will not need a cotton-gauze bandage or a gas mask, because you will not feel any discomfort when using acrylic water-dispersion materials.