Carrying out finishing work in the apartment, it is advisable to imagine how to choose a primer of deep penetration to avoid annoying gaps and make repairs qualitatively.
Why do I need a surface primer
When carrying out repairs in the apartment veryIt is important to choose the right quality materials, suitable for technical characteristics and successfully complement each other. It is especially important to give due attention to the choice of a primer mixture intended for pre-treatment of surfaces. By the term "primer" it is customary to understand a special adhesive mass of a liquid homogeneous texture consisting of a certain proportion of binding components and polymers. Its quality will depend on the stability of the finish coat, the level of its adhesion to the base, the appearance in the future of cracks, delaminations and the need for repeated repairs.
How to choose a deep penetration primer
The qualities of the priming mixture will differ inDepending on the requirements for the quality of the material and operating conditions. To choose the primer correctly, it is necessary to take into account the condition of the surface to be treated. There are several main types of primers, which differ depending on the binder that is included in their composition. Proper use of primers will achieve the desired result, without expending on its achievement of excessive labor resources and financial resources, save up to 30% of the cost of finishing materials during repair work.
- Alkyd primer. Such primers are optimal for primaryApplication on wood. Due to this type of primer, the surface of the wood becomes more susceptible to the application of the finishing coatings, and the bond area is increased - this is due to a certain chemical reaction that occurs in the upper layers of the wood under the action of a reagent, which uses zinc phosphate or chromate. Such a primer is also suitable for the treatment of metal surfaces, since it has good anti-corrosion properties. Alkyd primers achieve their optimum characteristics after 12-14 hours after application, then the surface can be covered with a finishing finish. However, it is impossible to apply alkyd primers to walls covered with plaster or finished with gypsum boards, and their use is substantially limited.
- Acrylic primer. This fairly large group of finishingMaterials intended for primary or finish coating of any surfaces. Acrylic primers are almost universal: they can be applied to fresh, old plaster, gypsum boards, wood-fiber boards, concrete, wood, metal surfaces. Important advantages of acrylic primers include absence of unpleasant odor, ecological safety and fast drying time of the applied material. Finish coating on such a primer can be applied after 2-5 hours after application - the exact time will depend on the air temperature, humidity and the quality of the substrate. Nevertheless, the use of acrylic primers is not always possible - in conditions of high humidity, temperature drops, they are unable to provide a reliable adhesion of the paint to the substrate, so additional materials may be required to protect it. This is especially true when applying primer to metal surfaces - under these conditions they quickly undergo corrosion.
- Perchlorovinyl Primer. To protect metals best suitedModern priming materials based on perchlorovinyl - they perfectly withstand the temperature reduction, quickly dry out and for a long time you can do without cosmetic repair. With all their advantages, these primers are quite toxic, they can not be used in living quarters, and when working with these materials, certain safety measures should be followed.
Other types of primer for interior work and non-residential premises
Similar qualitative characteristicsPossess polystyrene, polyvinyl acetate and phenolic primers - they are optimal for the treatment of plaster, wooden and metal surfaces in non-residential premises and on the street. When used indoors, special care should be taken, work should be carried out with active ventilation, using personal protective equipment. In dry interior areas, glyptal primers can be used. They dry up after 22-24 hours, for a long time provide a reliable grip of the base with the finish coat and serve as a guarantee of high-quality finishing.