How long the primer dries - note the time
Before talking about how much the primer dries, it is necessary to focus on its consumption. As a rule, one liter of liquid solution is enough for 12-15 m2 of the area of the surface to be coated. Today there is a wide choice of primers: acrylic, contact, oil and others. Each of them differs in the constituent components, which determine the drying time of the solution.
Immediately before the work, inspect the primer pack - usually manufacturers indicate the expected time for complete drying.
Specialists say that the drying process of contact, oil or deep penetration primers can be delayed. When carrying out repairs, you need to be prepared for the fact that after applying such a solution on the surface you will have to take a forced break for about a day.
The layer of acrylic composition, on the contrary, can only dry for 8-10 hours. In any case, it is necessary to take into account a large number of nuances affecting the drying time of the primer.
What determines the drying time of the primer?
First of all, the drying time of the solution depends on the surface on which it is applied. If it is too dry and porous, then the risk is high that the primer simply absorbs into it. In this case, you need to do the work not only for a second time, but also quite quickly. The reason is that after drying the primer on the wall surface a thin protective film forms which does not absorb liquids, therefore it is problematic to apply a second layer of the solution.
The drying speed of the primer is directly influenced by the air temperature in the room and the humidity level. So, the lower the temperature and the higher the humidity, the more time it takes to completely dry the applied layer of the solution. However, too high a temperature is unacceptable.
Specialists note that its optimum value should be 15-25˚C.As for the humidity of the air, it is possible to achieve the required level by carefully ventilating the room. Of course, the thickness of the applied mortar layer also matters: the longer it is, the longer the primer will dry.
Primer quick-drying - features of use
When performing repair work, in particular, priming of surfaces, it is worth considering the fact that in each case it is necessary to select the composition that will meet all the requirements to the maximum and suitable for subsequent application of a substance,.
So, as a reliable basis for various enamels, it is recommended to use a quick-drying primer. Depending on many factors, its drying time at a temperature of 20 ° C can be less than 6 hours.
Acceleration of the drying process is due to the inclusion of special modifiers in the primer.
It is ideal for metal surfaces, forming a reliable protective anti-corrosion film. Such a metal primer is resistant to temperature changes in the range from -45˚C to +60˚C, and can be applied even at -10˚C.For this, as with a conventional solution, a sprayer, brush or roller is used. The surface to be coated must first be treated, cleaned and degreased with a solvent.
Thus, it is necessary to start repair with a minimum amount of knowledge, which includes information not only about the technology of primer application, but also about the time of its drying.