Oil primer - characteristics and features of use
Professional experts recommend that the surface of ceilings must be primed and walls before painting them or gluing wallpaper sheets. To people who are far from the field of renovation and finishing work, it may seem that the priming process is not the most important procedure.
But experienced master finishers say that priming the surface is an extremely important stage in the implementation of repair work, and such a procedure should by no means be neglected.
In fact, there are several types of primer compositions, and one of the most widely used is the oil-based primer, ready to use. The main properties, purpose and varieties of such a primer will be discussed later in the article.
So that the finishing finishing material adheres firmly to the surface of the ceiling and walls when repairing internal work, the base must be covered with a primer before painting or wallpapering. Due to priming, the finish will be durable, will not crack and fall off, and the wallpaper will not come off and peel off. The high technical characteristics of the primer make it possible for it to greatly increase the adhesion rate of the plaster, putty mixture with finishing materials for finishing, and therefore the ceiling and walls will retain an attractive appearance for a long time, will remain the same as after repair. There are many primers in hardware stores and on the market, and it is usually very easy for a person to get confused, because it may not be clear which one is better to choose from.
Well are oily primers? This is an alkyd-type mixture, which is based on synthetic oil resins, and also contains linseed oil and grated paint, due to which such components can be matched to the color of the primer composition.
If the composition is supplied in the form of an aerosol or spray, there must be a solvent in the can. And if the solution is in a metal can, then there will be no various solvents in the composition, it should be applied either with a brush or roller. To protect yourself from purchasing a counterfeit, and still poor-quality product, you should buy a solution that has a quality certificate. Such a mixture will have the best technical characteristics, and the oil primer certificate is a document confirming that the products will comply with GOST and the requirements of other regulatory documents.
Below are all the technical specifications of the oily primer.
Typically, these types of wall treatment products have a matte color, due to which they are considered universal, and because they can be tinted. Typically, oil-based primers have a flow rate of 0.05 to 0. 1 kg per square meter, and this parameter will depend on what type of surface the mixture will be applied to, and what absorbency the substrate has. The thickness of one layer of the oil primer is less than 0.
Under standard conditions of use, the primer layer will dry completely after about 1 day. After this time, you can start applying the next layer. Before applying a layer of oil primer, the manufacturer is advised to thoroughly stir the mixture.
Excellent properties of the oil-type primer composition give it the following advantages:
Two types of oil and acrylic primers are sold in hardware stores:
- Universal primers have the best technical characteristics, due to which these types of mixtures can use for processing brick and concrete bases, but they cannot be used for priming any type of metal, as well as for wood.
Universal primers are suitable for protecting the surface of ceilings and walls, before wallpapering or painting.
- Primer paints are used for coating wood and metals. Moreover, these oil-type agents effectively protect the surface and enhance the degree of adhesion, and they also have antifungal characteristics. Usually they are produced in white, and therefore the primed surface looks like painted.
Consider a specific priming mixture.
To process cement, concrete and other mineral bases, before the start of painting or before the adhesive type of coating, a primer oil composition of vac i v is used. This mixture reduces the absorbency of the base, and thereby reduces the consumption of paints and varnishes. moreover, the funds will create a higher quality finish and increase its service life.
Such a primer composition dries out rather quickly, and practically does not have an unpleasant odor. As a rule, an oily primer composition Vak has a consumption (assuming one-coat application) from 0.
07 to 0.1 kg per square meter. At a temperature of +20 degrees and a humidity level of no more than 65%, it dries out in 1 hour. The primer should be applied at a temperature of at least +8 degrees. Before applying, the mixture must be stirred, the surface can be treated with a brush, roller or spray.
In the composition of the product there are no substances harmful or toxic to humans, water is used as a diluent, and not a solvent, and therefore such an oil composition for priming will be fireproof. The product should be stored in hermetically sealed factory containers, in the temperature range of + 5 ... + 30 degrees, no more than 1 year.
If the primer gets on the skin or eyes when applied, then immediately rinse them with plenty of running water.
The primer composition must necessarily correspond in composition to the paint and varnish material that will be applied over the primer composition. In the store, you should purchase a suitable type of primer, as well as such tools:
- A container-cuvette, which has a ribbed place for wringing. Such a container will be used for pouring a primer.
- Roller and brush, for surface treatment.
- There are no stepladders, you should purchase a telescopic handle.
Before you start priming surfaces with an oil primer (ceiling, walls, any other products and structures), you should remove dust, dirt, remnants of old materials for finishing, stains fat and other types of pollution. If you plan to prime the metal, then it should be cleaned of rust. The ready-made primer should be poured into a cuvette, put a brush or roller into the mixture, and run it several times over the ribbed surface to remove excess composition, and then apply the mixture to the surface. It is advisable to prime with two coats, but before applying the second coat, make sure that the first primer is completely simple.
The drying time will depend on the humidity and temperature in the room. Even beginners will be able to cope with priming, there is nothing terrible or difficult.
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