How to choose the right primer for different surfaces

Primingmixtures in the repair is sufficiently justified, because any finishing material must be kept on the ground very firmly and reliably. To do this, a primer is used, and this article will help you to choose which one to wall and flow.

Types of modern primer

Modern manufacturers offer a huge number of primer mixes. Choose the necessary types of primers for concrete, plaster, putty is not always easy. For this purpose it is necessary, above all, to know the varieties. You can not use one kind of primer for both paint and wallpaper.

Depending on the application, the types of primers for walls and ceilings are divided into the following groups:

1. Alkyd: only for wooden surfaces and metal structures;
2. Acrylic: have universal properties, respectively, suitable for different surfaces. Primers from this group penetrate deeper by 1 cm. This property allows the use of acrylic primers for deep impregnation of the substrate;
3. Aluminum: used only for wood. With their help, the wood is completely isolated from the ingress of moisture, thereby minimizing the occurrence of such unpleasant phenomena as mold or fungus;
4. Polyvinyl acetate: they are used only when using a special paint for priming concrete, wood, metal, plaster;
5. Silicate: this kind of treated decorative plaster and silicone bricks;
6. Shellac: helps prevent wood tar release, respectively, is used as a type of primer for the ceiling and walls;
7. Epoxy: applicable as a deep impregnation of surfaces of metal and concrete. Their main advantage is corrosion protection and sufficient strong adhesion.

Based on the above classification, before choosing a primer for walls, it is necessary to determine the material of the surface to be primed and only then to acquire the mixture.

Tip: When choosing a primer, pay attention to the manufacturer, price and specifications. The deeper the penetration level of the ground in the base, the better it is for any purpose.

All about the acrylic primer

The most common primer which one can be chosen in different cases is acrylic. It is universal and makes the final finish qualitative and durable. In turn, the types of acrylic primers also have their own classification and, depending on the application conditions and the purpose of priming, are divided into:

1. Universal: they are used on all surfaces and under any conditions. This primer is equally suitable for both indoor and outdoor finishing work. If you do not know how to choose a primer for wallpaper, what to use for subsequent finishing with tiles or simply painting, take a universal one. The solution of this mixture is slightly unclear, almost colorless. A special place in a wide range of universal acrylic primers is a very popular primer-paint today. Its use helps to solve several problems simultaneously: secure the surfaces, relieve the possible appearance of mold and fungal bacteria, apply a coat of paint. The composition of the white color and the surface is not only primed, but also colored.

Advice: you can buy a primer-paint in any store. You can achieve the desired color by adding dye to the primer. For example, after priming, the wall is to be painted blue. Add the blue dye and the first coat of paint is ready.

2. Types of deep penetration primers have all the characteristic qualities of acrylic primers. However, primers of this type penetrate deeper into the surface to be treated, smooth it, thereby tightening the base.

Absorption length reaches 1 cm. In the question of choosing a primer of deep penetration or the usual universal, the primacy should be given to the first group. The anti-aliasing effect makes the surface perfectly smooth, since there is a glueing of small particles, sand and dust. This is an excellent option, as primed wall for wallpaper, plaster and even tiles.

3. Adhesive: in the composition there is a quartz admixture, which makes the surface slightly rough, which, in turn, binds heavier finishing materials much stronger. This is a good way out when you do not know what to primer the walls before plastering.

Ways to apply a primer: when and how to do it

The method of applying a primer does not fundamentally differ from the methods of applying other finishing materials. The surface is cleaned, cleaned, sanded and degreased if necessary. To the question of how many times it is necessary to primed walls or ceiling, an individual approach is required, but at least two times.

For application, tools such as:

1. Roller;
2. Brush;

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In each case, the tool is selected individually. For example, it is better to apply a primer to a brick surface with a brush, but on a flat ceiling or plasterboard - with a roller. The bulldozer is used less often, since after it it is not easy to wash the entire room.

Priming the ceiling

Beginning the repair of the ceiling on its own, you need to learn information about how to properly primed ceiling. After all, despite the seeming simplicity of work, there are certain rules:

1. Having determined what to primer the ceiling, try to do it evenly. Incorrect distribution, after painting will be immediately visible. The place where the primer is applied thicker will be darker than the entire surface;
2. Before priming the ceiling before painting, select the direction of application of the fastening material. With one layer of primer it is done along the room, perpendicular to the wall with the window. In two-layer application, the first layer runs parallel to the wall with the window, the second layer - perpendicular to it.

Wall priming

Wall priming is necessary in any case. Another question is, the better the priming of the walls, but more about this later. Before the priming, the surface requires compulsory preparation: it is necessary to remove the old coating, to clean the irregularities, to fill the cracks, to remove dust and dirt.

The work should adhere to the technology, and do not do everything in a hurry. The first coat of primer must be dried and only then you can apply a second coat. It must be distributed evenly. Particular attention should be focused on the moment when you need to primed the walls under heavy wallpaper. In such cases, you can not use wallpaper paste( as many advise) as a primer.

Of course, you can argue, why do you need to primed the walls, if they are still glued? First of all, the wallpaper will hold tight, do not go with bubbles when sticking. And in the future on such walls there will be no dirty stuff in the form of mold or fungus.

As well as primed walls for painting

Priming of walls is mandatory, and the question of what to primer the walls before painting, you can safely say - universal primer. It has all the necessary properties and is suitable for different situations.

Very often it is necessary to decide whether to primer before painting? Some consider it is not: the primer mix, when dry, leaves the strips, which are clearly distinguished after painting. And the dust and dirt can be cleaned with a vacuum cleaner. Others, on the contrary, say that it is necessary to do this. It's up to you to decide on your own. Want a practical repair - primed, dream to save - do not primed.

Often the walls are made of plasterboard, as this is an affordable and practical material. Usually it is perfectly smooth and, accordingly, many are interested in whether it is necessary to primer drywall? Yes, it is necessary, because the priming process not only level the walls, but also serves as an excellent factor in the adhesion of the base to the finish.

Use in this case, again a universal primer, performing the work in the following sequence:

1. Priming for the first time;
2. Shpaklyuyut;
3. Primed again.

Only after complete drying, proceed to surface painting.

Advice: when working with primer, the temperature in the room should be within 5-20 degrees of heat, air humidity up to 75% and no drafts.

As well as primed walls for plastering

Plaster is used on brick, concrete or foam concrete surfaces. They tend to have high looseness and absorbency and the question of whether to be primed before plastering, does not cause doubts. Choose in these cases a primer of deep penetration. It not only perfectly bonds, but also has antiseptic properties.

Priming in front of the plaster should be in several layers. Use a better brush or roller. Dry each layer for about an hour and at this time it is necessary to protect the walls from getting on them dust and dirt. The temperature characteristics of this type of primer are the same as the universal one. The main thing is to carefully read the instruction and follow it.

Precisely the same requirements are made when the question arises, whether it is necessary to be primed before the putty. All the same, even more, because in a clean layer of putty will not hold any finishing material.

Thus, summing up all of the above, it is necessary to note the most important: to ground the surface must be done, it should be done in accordance with the rules, choosing what primer to primer the ceiling or walls.

On how to properly ground the wall the video will tell in more detail.