How much should the primer dry?

Each specialist can say that all the walls in the house should be covered with a primer, no matter what kind of work you plan to do in the future: glue non-woven wallpaper or cover the walls with water-based paint.

An additional layer between the decorative coating and the wall itself is needed so that this coating does not lose its qualities for a long time.

Thanks to him, the durability of the coating increases.The primer tends to penetrate into small cracks, filling them in a similar way, and glue together loose debris or dust particles. Thanks to the property of soaking the wall, the primer creates a uniform surface.

The following are the main benefits of primer compositions:

• the formation of a strong foundation before the start of finishing works;
• concealment of faded areas of walls and stains;
• paints and other coatings look more brilliant;
• after a coat of primer, you can paint the surface with a light color, even if it was initially dark;
• on the dirt surface the smell of paint is not felt so strongly.

But, in order to obtain additional properties, it is better to choose a primer separately for each material. So you can achieve protection from moisture or ultraviolet radiation, to avoid corrosion and mold.

In the modern world, the most versatile primer is acrylic. It can handle any surface: from metal and wood to concrete and plastered walls. This primer will cope well with the task.

Any tree, especially coniferous, usually emits resin.This material needs careful treatment, it must be coated with a primer in order to preserve the decorative layer. In addition, there are some types of primer that can protect the breed from rotting or insect pests.

Surfaces made of metal must be treated with a primer. So you can significantly reduce the rate of occurrence of corrosion. However, to completely avoid it will not succeed. For non-ferrous metals, paint and other decorative coatings are not required, they almost do not corrode, but they still need to be primed to adhere the coating and the surface to each other.

A special type of primer is available on the building materials market, endowed with a corrosion conversion function. This composition is applied directly on top of rust, then, after coating with paint, it can be used further.

Although the primer is almost not visible on the surface, the benefits of it are still there: the adhesion to the wall will increase, and consumables will be spent in smaller quantities.In this case, the primer will help save the amount of glue.

There are different types of primer.

A more detailed list is as follows:

• Alcohol primer or linseed oil is perfect for working on a wooden base. In order to shorten its drying time, it is possible to heat up the area in need of treatment in advance.
• Acrylic primer can increase the strength of even the weakest base, it is a universal compound of deep penetration.

• In order to work with a base of metal, you can use an alkyd or oil primer. It is also suitable for wood. A similar primer can be applied over rust due to its anti-corrosion properties.
• For the purpose of processing the ceiling and walls in an ordinary room, concrete contact is best suited.
• In order to increase adhesion, use contact primer. In the composition there is quartz sand. This primer fills small cracks well due to deep penetration into the walls.

There are other mixtures that are used only by specialists. These options are not common among the common resident.

Below are some examples:

• Silicone solution. They are covered with concrete or lime walls. This type of primer hardens within 5 hours.

• Polyurethane composition used in workshops and other similar premises, the walls of which are characterized by poor absorbability.

• Pigmented primer - a special solution that allows to achieve a neutral color of the surface so that it does not shine through the wallpaper.

The period of complete drying of the primer depends on various conditions. The following are the main factors that influence the drying of the mixture:

• Temperature and humidity. The approximate drying period is 4 hours, with a moisture level of 65% and temperatures above 25 degrees. If the weather is good without precipitation, then to speed up the process, you can open the windows, because the drying rate depends on the level of moisture in the room.
• Layer thickness Primed composition must be applied to the walls. ceiling or floor is very thin layer. If the plane is not perfectly smooth, then the surface should be treated in several layers. However, the drying process will take longer.

• Type of primer and its structure. The period of time for which it dries directly depends on the type of primer. The acrylic-based primer dries within 4 hours, and the contact primer and rapid penetration mixture dries for about 24 hours. There are quick-drying primers, they are based on water, and the drying time is up to 2 hours. An oil-based primer will take more than a day to dry.
• Type of foundation.
• The porosity of the material.

• Alkyd polymer it is used to fill small cracks, thanks to it, the putty or paint will not depart layers, which significantly increases the strength of the surface. Such a primer composition creates a semi-gloss film, on top of which paint can be applied. It can be used for metal and wood work.

However, the alkyd polymer is poorly absorbed, so it can not be used under plaster bases or plaster.It perfectly copes with wooden surfaces, without breaking structure of fibers. The most demanded manufacturers: Tikkurila, Alpina, Sadolin and Otex. Drying time is about 24 hours.

In order not to incur unnecessary costs and not to lose the characteristics, you need to choose the right tool. Remember that not all types of primer are suitable for working indoors. Suitable flow is determined by the type of coating.

Each type of primer has its own characteristics, on which depends the drying time:

• The composition of acrylic soil includes a large number of components: from dyes and binding resins to antiseptic additives (for example, chalk or a biocide). The amount of each of the substances is variable. This affects how dense the solution will be. Acrylic primer is well impregnated and penetrates into small gaps, thereby achieving good adhesion for concrete bases, as well as plaster, brick, plywood and wood.

Often such products are used when working in the bathroom and kitchen.This mixture is characterized by the absence of smell and a short drying time not exceeding 4 hours. The main manufacturers are Knauf and Ceresit. For work on non-smooth foundations, use the manufacturer’s Olympic tools, which are distinguished by their versatility.

• Perforated composition is undesirable to use indoors due to its toxic components. Blend well with metal, it can be used on any surface. In the composition there are additives that do not allow corrosion, they also protect the surface from destruction. The substance can fight with rust stains, the thickness of which is not more than 100 micrometers.

Among the components of this type of primer there are a large number of impurities that accelerate drying. The average freezing time at a temperature of 20 degrees is 1 hour. The highest quality and versatile is considered to be the company Cersanit, APP and Artelit.

• For all types of surfaces that are in the open air, for example, loggias and verandahs, phenol solution is best suited. He creates a special film that is not susceptible to the effects of temperature changes and dampness.The amount of additives affects the drying time of the primer on the floor. If the priming process is carried out in the warm season, the drying time will be about 8 hours. The best manufacturers of the solution: Ruslyuks, Glims Production, Pufas and Dufa.

• If you want to enhance the color of the paint, then you should use a synthetic-based polyvinyl acetate primer. Particular efficiency is noted during work with drywall, because the primer is endowed with the function of smoothing the pile. This mixture is suitable for any systems. Drying time is 30 minutes. Top marks are: Knauf, Unis and Optiroc.

The following are tips from professionals to help you get the most from your job:

• In the open air and in damp areas need to use special formulations. The bases that you have processed will not lose their vapor permeability.
• In order to increase adhesion to the surface, it is necessary to remove stains and other contaminants.
• To check readiness, you need to attach the plastic film with scotch tape. If there is no condensation on the material, you can begin to begin the finishing work. In other cases, it is better to wait about 24 hours.It may take up to 10-15 days to absorb some species.
• Drying time is always marked on the packaging. But this is an average value, therefore it is necessary to add another 60 minutes to this figure. When priming a second time, time is added. If the room is very warm, then the composition will dry quickly enough.

On how to properly primed the walls, you will learn from the following video.