Work With Primers

Treatment of walls with a primer for plastering

When decorating walls or repairing them, several rules must be followed to create a durable and even surface. Before plastering it is necessary to cover the walls with a primer. The main objective of this material is to extend the life of the structure. The primer used for plastering is a liquid suspension that does not have color and odor.

  • Primer Properties
  • Primer Types
  • Priming Method and Work Process

After applying the mortar to the work surface, it dries to form a protective film. It helps improve the interaction of the plaster with the wall and give the structure additional strength. In addition, the penetrating ability of the primer allows the solution to fill the pores, increasing adhesion and anti-corrosion properties.

Therefore, the priming of walls for plastering is an advantageous and correct solution for finishing the structure.

Primer properties

The film formed by the primer is waterproof. This avoids the ingress of moisture into concrete and other materials. In addition, the chemical composition of the solution helps to avoid the occurrence of mold and rot on the structure. This feature is the antibacterial properties of the substance.

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Elements that are part of the primer applied under the plaster, increase the glossy effect of the surface, which allows you to hide defects. The application of several layers of primer enhances the properties of the solution.

The higher the quality of the substance used, the more reliable the treatment will be. However, it is not necessary to mix solutions of different manufacturers, since the compositions may differ and not be suitable for each other. As a result, the entire surface to be treated may begin to peel off or be irradiated.

Kinds of

primers Before buying, you need to understand the types of solutions and their application. A certain kind of primer used for plaster is suitable for each material. The main are:

  1. Alkyd primer. Serves as the main element, leveling the untreated wooden surface. Before finishing the wooden structures it is recommended to use an alkyd solution. It dries quickly, preventing wood from soaking up moisture. A polystyrene suspension can serve as a substitute, but it contains harmful chemical elements that strongly influence the human body.
  2. Zinc primers. These are ordinary ground solutions, in which zinc is added before use. They are great for metal structures. You can create such a suspension yourself by adding zinc oxide to a conventional solution. A special feature is the excellent protection of the structure from corrosion. A glyphthalic solution can serve as a substitute. True, its drawback is a long hardening.
  3. Perchlorovinyl composition. Used for processing concrete and brick. Such a solution dries very quickly. However, it can not be used when living in a people's room. This is due to caustic components that are part of the suspension.
  4. Emulsion and acrylic mixture. The most popular type of primer. They are suitable for application to any material. The absence of an odor and the speed of hardening are the main advantages of such solutions. They can be applied to the surface without removing the old plaster layers before use. The composition penetrates deeply and strengthens the old coating.

Priming method and process of operation

Regardless of what kind of material and mortar are used in the finish, several features of applying a primer to the surface need to be considered. Compositions can have different aggregate states.

Manufacturers produce concentrated, dry or ready-to-use solutions. The first two types should be diluted before use. This requires taking into account the recommendations of the manufacturer and correctly correlate the proportions.

It is very important to dilute the amount of the mixture taking into account the time of work. Quick-drying solutions may lose their properties if applied after a specified time. Therefore, divide the amount of the substance into portions, taking into account the speed of applying it to the surface of the structure.

Before cleaning, carefully clean the old walls. Treat all greasy traces with a solvent. When exposed to paint, the solution leaves noticeable stains. They are especially visible in light, because they have a glossy gloss.

Before priming, it is necessary to thoroughly clean the walls.

Therefore, before starting work, close all areas on which the paint is applied. In the case of applying a primer to plasterboard walls, it is recommended to attach a special mesh material to the joints. The solution is very corrosive, use gloves when working.

During application, it is required to withstand a certain temperature of the mixture. Depending on the manufacturer, it can be different. However, almost always it is necessary that the temperature does not fall below +5 degrees Celsius.

First of all, apply the solution to easily accessible areas, so as not to waste time during which the mixture can solidify. Application is carried out in any convenient way, brush, roller, etc. The number of layers is indicated by the manufacturer on the package. Note that the second layer is always applied until the first layer dries completely.

When priming the exterior walls, please note that the work should be carried out on a dry surface, without direct sunlight. The rest of the process is no different from the interior finish.

Primer can be applied with a brush or roller.

Plastering or painting takes place one day after priming. If you do work earlier, you can break the characteristics of the material and its protective properties. Do not apply a direct coat of paint over the primer, if you hold a finger on it, there is dirt. In such cases, first always apply a layer of plaster and after the wall is painted.

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