How To Choose The Right Primer For Walls And Ceilings, Methods Of Application

2023 Author: Philip Bishop | [email protected]. Last modified: 2023-08-25 07:54

• Types of modern primer
• All about acrylic compounds
• Application methods: when and how to do it
• Ceiling preparation
• Preparing the walls
• How and with what the walls are primed for painting
• How and with what the walls are primed for plaster

The use of primer mixtures during repairs is quite justified, because any finishing material must be very strong and reliable on the base. For this, a primer is used, and this article will help you which one to choose for walls and a stream.

Types of modern primer

Modern manufacturers offer a huge number of primers. It is not always easy to choose the necessary types of primers for concrete, plaster, putty. For this purpose, you must first of all know the varieties.

Depending on the field of application, the types of primers for walls and ceilings are divided into the following groups:

1. Alkyd: used only for wooden surfaces and metal structures;
2. Acrylic: have universal properties, respectively, suitable for different surfaces. Compounds from this group penetrate 1 cm deep. This property allows the use of acrylic primers for deep impregnation of the base;
3. Aluminum: only used for wood. With their help, the wood is completely isolated from moisture, thereby minimizing the occurrence of such unpleasant phenomena as mold or mildew;
4. Polyvinyl acetate: used only when using paint of a special composition for priming concrete, wood, metal, plaster;
5. Shellac: helps to prevent the resin from emitting wood, and is therefore used as a primer for ceilings and walls;
6. Epoxy: Suitable for deep impregnation of metal and concrete surfaces. Their main advantage is protection against corrosion and sufficient strong adhesion.

Based on the classification presented above, before choosing a primer for walls, it is necessary to determine the material of the surface to be primed and only then purchase the mixture.

When choosing a primer, pay attention to the manufacturer, price and specifications. The deeper the level of soil penetration into the base, the better it is for any purpose.

All about acrylic compounds

The most common primer you can choose in different cases is acrylic. It is versatile and makes the final finish high quality and durable. In turn, the types of acrylic primers also have their own classification and, depending on the conditions of use and the purpose of the primer, are divided into:

1. Universal: used on all surfaces and in all conditions. This primer is equally well suited for both indoor and outdoor finishing work. If you do not know how to choose a primer for wallpaper, what to use for subsequent tiling or just painting, take a universal one. The solution of this mixture is slightly cloudy, almost colorless. A special place in a wide range of universal acrylic primers is occupied by a very popular primer paint today. Its use helps to solve several problems at the same time: to reliably bond the surfaces, get rid of the possible appearance of mold and fungal bacteria, apply a layer of paint. The composition is white and the surface is not only primed, but also painted.

Tip: You can buy primer paint at any store. You can achieve the desired color by adding a dye to the primer. For example, after priming, the wall will be painted blue. Add blue dye and the first coat is ready.

2. Deep penetration formulations have all the characteristic qualities of acrylic primers. However, this type of primer penetrates much deeper into the surface to be treated, smoothes it, thereby adhering the base more strongly.

The absorption length reaches 1 cm. In the question of which deep penetration primer to choose or the usual universal one, the first group should be given priority. The smoothing effect makes the surface perfectly flat, as fine particles, sand and dust stick together. This is a great option for priming walls for wallpaper, plaster and even tiles.

3. Adhesive: there is a quartz impurity in the composition, which makes the surface a little rough, which, in turn, glues heavy finishing materials much stronger. This is a good way out when you don't know how to prime the walls in front of the plaster.

Application methods: when and how to do it

The method of applying the primer is not fundamentally different from the methods of applying other finishing materials. The surface is cleaned, smoothed, sanded and degreased if necessary. The question of how many times the walls or ceiling need to be primed requires an individual approach, but at least twice.

For application, such tools are used as:

1. Roller.
2. Brush.
3. Pulverizer.

In each case, the tool is selected individually. For example, it is better to apply a primer on a brick surface with a brush, but on a flat ceiling or drywall - with a roller. The pulverizer is used less often, since it is not easy to clean the entire room afterwards.

Ceiling preparation

Starting to repair the ceiling on your own, you need to study the information on how to properly prime the ceiling. Indeed, despite the seeming simplicity of work, there are certain rules:

1. Having determined how to prime the ceiling, try to do it evenly. Incorrect distribution, after painting it will be immediately visible. The place where the primer is applied thicker will be darker than the entire surface.
2. Before priming the ceiling before painting, select the direction of application of the bonding material. With one layer of primer, this is done along the room, perpendicular to the wall with the window. In a two-layer application, the first layer runs parallel to the wall with the window, the second - perpendicular to it.

Preparing the walls

It is necessary to prime the walls in any case. Another question is the best way to prime the walls, but more on that later. Before priming, the surface requires mandatory preparation: it is necessary to remove the old coating, smooth out irregularities, putty the cracks, remove dust and dirt.

In work, you should adhere to technology, and not whip everything up. The first coat of primer must be dry and only then can a second coat be applied. It is necessary to distribute evenly. Particular attention should be focused on the moment when you need to prime the walls under heavy wallpaper. In such cases, wallpaper glue cannot be used as a primer (as many advise).

Of course, one can argue, why do you need to prime the walls if they will be glued anyway? First of all, the wallpaper will hold on tightly, it will not bubble up when glued. And in the future, no filth in the form of mold or mildew will appear on such walls.

How and with what the walls are primed for painting

The priming of the walls is mandatory, and the question of how to prime the walls before painting can be safely asserted - a universal primer. It has all the necessary properties and is suitable for different situations.

Very often you have to decide whether you need to prime before painting? Some people think no: the primer mixture, drying out, leaves stripes that stand out clearly after painting. And dust and dirt can be removed with a vacuum cleaner. Others, on the contrary, argue that this must be done. Here you will have to decide on your own. If you want a practical repair - prime, if you dream to save money - do not prime.

Often the walls are made of plasterboard, as it is an affordable and practical material. Usually it is perfectly flat and, accordingly, many are interested in whether it is necessary to prime drywall? Yes, sure, because the priming process not only evens out the walls, but also serves as an excellent factor in adhesion of the base to the finish.

In this case, they use a universal primer, performing the work in the following sequence:

1. Primed for the first time;
2. Putty;
3. Re-primed.

Only after complete drying, they start painting the surface.

Advice: when working with a primer, the temperature in the room should be within 5-20 degrees Celsius, humidity up to 75% and no drafts.

How and with what the walls are primed for plaster

Plaster is used on brick, concrete or aerated concrete surfaces. They, as a rule, have high friability and absorbency and the question of whether it is necessary to prime before plastering is beyond doubt. Select a deep penetration primer in these cases. It not only adheres perfectly, but also has antiseptic properties.

It is necessary to prime in several layers before plastering. Better to use a brush or roller. Each layer dries for about an hour and at this time it is necessary to protect the walls from dust and dirt. The temperature indicators of this type of primer are the same as the universal one. The main thing is to carefully read the instructions and follow them.

Exactly the same requirements are imposed when the question arises whether it is necessary to primer before puttingty. Everything is the same, even more, because not a single finishing material will hold on to a clean layer of putty.

Thus, summing up all of the above, the most important thing should be noted: it is imperative to prime the surfaces, this must be done in accordance with the rules, choosing which primer to prime the ceiling or walls.

The video will tell you in more detail how to properly prime the walls.

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Video: