It is known that the main stage preceding the application of paint is coating the base with a special solution, which provides better and longer service life of the paint.
Today, there is the possibility of priming walls directly over old paint, for which special primer solutions are used. Let us further consider their main features, as well as the principles of application and a list of the best manufacturers of the material.
Cover functions
What role does the primer play on old paint in construction? First of all, its role is to ensure good adhesion to the surface, so that the paint applied on top of it does not deform and, moreover, does not peel off prematurely.
As a result of treating the wall with a primer, the coating becomes more resistant to the influence of negative factors in the form of fungus and other bacteria, as well as water, under the influence of which various spots can form on the surface. Moreover, thanks to this procedure, the surfacebecomes stronger.
Construction specialists also note that pre-priming reduces the consumption of coloring material.
Basic composition
Speaking about the primer on old paint, it should be noted the composition of this type of material. It contains components such as oils, glue, bitumen, as well as components that accelerate the drying process of the material. Moreover, coloring pigments are also often included in the structure of the material, which may not be present in most products.
The main components of a primer on old paint also include substances whose main action is to form a film on the surface.
Specialists in the field of construction quite often recommend giving preference to materials created on an acrylic basis. According to them, it is they who have high adhesive qualities. Moreover, their use is possible on different types of surfaces, which is also a significant advantage of the tool compared to the others.
How to properly prime the surface
When applying compositions of this type to the surface, it is very important to observe certain measures. So, first of all, it should be noted that the composition in question should be applied exclusively on a flat surface on which the paint has not undergone a peeling process. Moreover, it should be applied in only one layer. It should also be noted that the previous coat of paint must also be applied tosurface pre-treated with a primer.
Specialists in the field of construction recommend working with primer materials only at positive temperature indicators. Only in this way will the expected effect be obtained. Under the same conditions, it is recommended to store the product.
How to choose a primer for putty
Can I primer over old paint? Of course. Moreover, it is excellent for smoothing the surface before applying putty, but in this situation, care must be taken to improve the adhesive qualities, since the primer usually lays evenly on old paint.
In order to prepare the surface for the subsequent application of putty, it is necessary to give preference to a building material with a high content of quartz. After applying it to the wall, a slightly rough layer is formed, due to which the adhesion performance will improve significantly.
Top Producers
The modern building materials market offers a large selection of primers for old paint. According to reviews of some of them, a number of sales flagships can be distinguished, which you should pay attention to when choosing a product of this group.
The list of the best primers of the type in question includes:
- VD-AK-0301 (VGT);
- "Optilux";
- Neomid;
- "Optimax".
Let's consider each of the listed means in more detail.
VD-AK-0301
A building material with this name is recommended to be used before the subsequent application of water-dispersion and acrylic paint on the surface treated by it. Its main advantage is that it does not require pre-cleaning of the surface before applying the product.
Speaking about the consumption rate of the product, I must say that it is quite acceptable - about 200 ml per 1 sq. m. Separate advantages can also be identified in the process of storing the material - it can withstand up to five procedures of freezing and subsequent thawing.
Masters in the field of construction note that the primer on the old VGT paint dries quite quickly - from 2 hours to a day, depending on the air temperature in the room. Also, its composition boasts high resistance to low temperatures - the material can be kept for about a month at -40 ° C.
Optilux
Among the best primers is the composition from the manufacturer "Optilux". In reviews of this product, such qualities are often noted as cost-effectiveness (about 100 ml per 1 sq. M), resistance to low temperatures (up to -40 ° C), as well as a wide selection of base materials on which the product can be applied. Practice shows that the considered version of the building product is excellent for covering concrete, as well as bases pre-painted with varnish and paint. Often, a primer on old Optilux paint is used before application.wallpaper.
The composition of the material under consideration is based on components such as polymers, various pigments, as well as a water-acrylic dispersion. Specialists in the field of construction often note that it is precisely this composition that makes it possible to improve adhesive performance in a special way.
Neomid
Primer on old paint Neomid is a very popular material that is used for high-quality treatment of previously painted surfaces before applying a new coat of paints made on the basis of water emulsions, as well as aqueous solvents.
The popularity of the Neomid primer is due to the fact that the composition of this product is distinguished by its versatility in use, as well as ease of application and quick drying. This product contains a large number of additives, the main purpose of which is to provide maximum technical characteristics of the building material, as well as to give the product high adhesive properties.
Construction specialists quite often note that it is necessary to apply a primer only in two layers, and before applying the second, you must wait for the first to dry completely.
Optimax
What primer can be applied over old paint? Masters in the field of construction often draw the attention of the consumer to the product "Optimax", which, according to them, has a number of advantages.
The soil in question is created exclusively on an acrylic basis. Often in its composition there are coloring pigments that give it a special color. The structure of the building material also contains components that improve its adhesive performance.
Among the significant advantages of the material is the cost-effectiveness of its consumption when used for its intended purpose - per 1 sq. m of the base requires about 100-200 ml of the product. What's more, each applied layer dries fairly quickly - about an hour.
The manufacturer notes that a positive result from the use of the product is achieved regardless of whether a primer was applied to the sanded or unsanded surface.
During storage, the product in question is able to endure up to five cycles of freezing and thawing, without losing its former properties and positive qualities.
Price of materials
Speaking about the cost of the considered type of building material, it should be noted that it directly depends on the quality of the product and its main components. Practice shows that the price of a primer of the type in question can vary from 200 to 850 rubles per pack. When choosing this product, experts recommend giving preference to the one that is in the middle price range - about 350-400 rubles.
