Do I need to prime the walls before puttingty

Nuances in working with a primer

Cardboard may be torn or unevenly cut at the edges of the sheets. Drywall and self-tapping screws are made of different materials and putty adheres to them in different ways. Do I need to prime the fiberglass before puttingty?

The primer smoothes out these imperfections and allows you to align the joints in the best way.

The primer must be applied evenly over the entire surface. This will minimize drying time, ensure even adhesion and save material. Therefore, it is most convenient to use a colored primer mixture.

Many manufacturers add color to the mixture, which helps to understand where the primer has already been applied, and where it is not enough. There is no need to worry that the primer will show through other finishes as the color will discolor as it dries.

Thus, when answering the question whether it is necessary to prime drywall before puttingty, we can say unequivocally: it is necessary. Moreover, it is a must! The costs of priming material and the work of applying the primer are negligible compared to those that would have to be laid out if the putty starts to come off.

Indeed, in this case, the repair will have to be redone entirely.

Additional Information:

Acrylic primer, the price of which is 40 rubles. per 1 kg, offered for sale by the manufacturer Brozex. This composition is completely ready-to-use. On sale you can also find a primer "Bolars", for 10 kg of this composition the consumer will have to pay 520 rubles. This affordable acrylic primer is an agent for strengthening substrates with normal water absorption.

The primer fixes fragile, old and highly absorbent substrates. It can be applied before further use of adhesives, paints, putties and plasters.

• Simultaneously with the treatment with a water-dispersion composition, the surface is dedusted.
• The protective and adhesive properties of the mixture provide a decrease in the moisture-absorbing characteristics of the gypsum board, which prevents cracking of the putty layer during drying.
• The primer does not contain solvents, therefore it meets environmental standards.

With the help of processing, you can significantly increase and improve the adhesion of the drywall surface to paint, glue and putty. Also, you can reduce the timing of finishing work and even save a little on building materials, the price of which is constantly growing.

If you do not cover the foundation of the house with waterproofing, it will also not be washed off with water in the first 5 years, but problems may arise over time. It's the same with the trim. Moreover, solving emerging problems is much more problematic and costly than following generally accepted technology.

If you plan to paste over drywall with wallpaper, it is better to opt for a transparent composition - a colored one can shine through the wallpaper. There are types of primers that become colorless after drying. The color of the primer is needed so that the master can see the areas that have not yet been processed.

Drywall has become one of the most commonly used building materials. And there is nothing surprising in the fact that today many questions concern him. Traditionally, many questions arise around such a process as priming and plastering drywall walls.

Many professionals involved in finishing work are wondering whether it is necessary to prime drywall walls before puttingty. Do I need to putty the ceiling before painting with water-based paint? It is difficult to answer unequivocally.

However, most craftsmen are inclined to believe that the GKL primer before puttying is an obligatory finishing stage.

What is a primer?

Primer

Indeed, what is a primer (or primer) and what is it for? From the name it is clear that the soil is the basis on which the repair is “built”.

In essence, it is an emulsion composition (solution). It is applied to a surface - wall, floor, ceiling - filling the porous surface and ensuring its leveling - on the one hand, and increasing the adhesion of this surface with the subsequent coating layer - on the other.

In other words, using it, you pre-level the surface and guarantee the best "adhesion" to this surface of putty, paint, etc.

In addition, the range of modern primers also allows you to protect the surface from the appearance of further harmful microorganisms - fungus and mold.

Application of primers

Working with a primer is extremely simple. The main thing is to know what tools you need, the right choice of solution. Such work is within the power of any person. The workflow itself can be split into several periods.

Working with a primer is extremely simple.

Preparation of the primer composition

The preparation of the solution is always clearly spelled out in the instructions, mainly on the sealed packaging. This is followed by the following steps:

1. Shake, mix the solution, pour into any container convenient for work. Construction utensils can be as follows: enameled, wooden, plastic. Metal is subject to destruction (sometimes it is smeared, in several layers, with oil paint, each must dry).
2. We dilute the primer in accordance with the instructions.
3. We also transform dry mixtures in accordance with the rules.
4. We mix the solution thoroughly, you can do this with a construction mixer.

We mix the solution thoroughly, you can do this with a construction mixer.

To be more specific, we can single out primers for a specific purpose: lime, adhesive paint, universal. You can prepare them as follows:

• Calcareous. For ten liters of material: fatty lime dough (two and a half kg), table salt (fifty or one hundred g) or aluminum alum. Stir the dough in cold water (5 liters). Dissolve salt in a boiled hearth (2 liters). Then pour it into a container with dough. Remains - three liters of water, add. The next mandatory procedure is filtering through a sieve or other product (one to one mm);
• Adhesive painting. Ten liters of water: the so-called - aluminum alum (one hundred fifty g), forty percent household soap (two hundred g), hard animal glue (two hundred g), drying oil (twenty five to thirty g), chalk (two to three kg). Alum is added to three liters of boiled water, glue is in two liters of the same water. A soap solution is added to the glue (for two liters of boiling water - all the soap), mix, add drying oil. Then add alum, chalk, mix, allow to cool. They are filtering.

If a person loves experiments, you can cook it yourself, but it is better to buy soil from a well-known manufacturer.

If everything is done exactly, according to the instructions, a single mixture without lumps appears.

Surface preparation

Before work, you need to carefully prepare the walls:

• Surface paint. It all depends on the type of paint, for today it is mainly water-based. It can be removed with a simple spatula; it is better to moisten the walls with soapy liquid. The enamelled walls are removed with emery;
• Wallpaper. Removal takes place with a spatula, after wetting the wallpaper with water (or a soapy solution with wallpaper glue). Washable wallpaper is cut in free order. Then moisten with soapy liquid and remove. If not removed the first time, moisten the paper - and try to remove them again. You can also use a heated iron. It should be applied to the wall through a wet cloth. After removing the wallpaper, you should wash the wall and walk again with a spatula;
• Mold, mildew.To clean these microorganisms from the walls, specialized means are used. You can prepare the solution yourself, based on bleach;
• Checking the plaster. The main thing is that the cement surface does not have cracks and does not crumble. You can check its strength by light tapping. You can hear where there is emptiness in the walls;
• Drywall. It is advisable to putty before work;
• Cleansing from dirt, dust.

Before work, you need to carefully prepare the walls.

Surface application

A primer for walls under putty - the technological component is extremely simple:

1. Consider the air temperature. Better if +30 -5.
2. Working tools: roller, brush, tray, telescopic rod or pull-out product, stepladder, gloves, mask, overalls.
3. Follow the previous two steps: clean the walls, dilute the concentrate.
4. Add material to the tray.
5. Moisten a roller or brush in the solution. Apply primer to the wall, observe that the liquid does not spread. It is applied from bottom to top, in a thin layer.
6. Work carefully. There should be no dry areas. Remember to clean your work supplies.
7. Use the brush in places where it is difficult to roller.
8. After processing, you need to wait until it is completely dry.
9. Then apply a second coat.
10. This is the best way for all types of work: wallpapering, painting, etc.

All the work can be done using a specialized sprayer, it is used if the object is quite extensive.

All the work can be done using a specialized sprayer, it is used if the object is quite extensive.

How to reduce consumption

There are several working principles for saving primer:

• Dry the walls well. The solution lays down much more efficiently;
• Working with a brush also significantly saves the mixture;
• Impregnation of walls before working with soil also helps a lot;
• And most importantly, the correct calculations of the consumption. You need to add the length to the width of the wall. Then we multiply the existing amount by 2. This is the perimeter, we multiply it by the height of the room (how much is needed - about one hundred, two hundred ml per 1m2). Also, if the surface absorbs well, more product is needed.

Working with a brush also significantly saves the mixture.

If you have any doubts or questions about the organization of the upcoming work, then you can always familiarize yourself with the proposed information and properly organize all subsequent actions. The work is really simple and even a person who is not familiar with construction subtleties can do it.

Why do you need a primer before putty

Most experts point out that the putty can only be carried out after using the primer mixture. Priming is a mandatory process, although to the average person it may seem like a waste of money and effort. In order to get rid of all doubts, it is necessary to figure out exactly why the surface should be primed before the putty.

There are many primer options on the market today that can be applied before filler. The most popular and in demand are solutions that contain cementitious components. Due to this, it is possible to create roughness on a smooth base, which is the main criterion for reliable adhesion of materials. Otherwise, the deposited layers of material may begin to peel off and crumble within a few hours after the repair. As a result, you will have to do it all over again, buying expensive building materials.

Without preliminary priming, the wall surface will absorb most of the putty mixture into itself, which will lead to too much consumption.

Types of primers

Today the paint and varnish industry offers a wide range of mixtures to choose from for preparing surfaces for further coating.

The main ones are: alkyd, acrylic, polystyrene, phenol-based primers, adhesive, mineral, latex and others.

Alkyd is designed for processing wooden structures. Protects wood from rotting and various insects. A fashionable trend in construction is the creation of houses from wood material. If in the future the surface will be varnished, then it is necessary to prepare it by applying a primer.

A primer using shellac has been developed and introduced into production and sale.

It is a liquid mixture that penetrates firmly into the depths of the wood layer (smoothing the surface where there are knots) and makes it completely resistant to moisture penetration. Protects against the formation of fungal deposits.

Acrylic primer is used on almost all types of surfaces. It lays down on the surface in a very strong layer. Its peculiarity lies in the fact that it can handle metal structures, as well as surfaces that absorb moisture slowly. Waterproof substrates are best treated with mixtures that are compatible with them. Optimax primer is well suited to prepare the wall for wallpaper.

It will not only hide all surface defects, but also paint the wall white, which is important for thin wallpapers.

The adhesive mixture is intended for rough surfaces. It is convenient to lay tiles on them. The primer contains quartz sand. Suitable for substrates on which decorative plaster will be applied.

Primers are available such as glyphthalic perchlorovinyl chloride. They are intended for application to cement, brick and wood. Used for outdoor work. They have a very high toxicity.

Mixtures containing abrasive particles (quartz sand) are used to cover concrete, for example, "Betonokontakt". Concrete bases are tested for strength. All irregularities and depressions are covered with cement, and after drying, a primer is used for surface treatment. It can be used before applying the topcoat. The adhesion of the wall will increase significantly after processing with such a composition.

For rooms with high humidity, primers with antibacterial components are suitable.

Polystyrene is usually applied to external surfaces, since it is highly toxic and is not used for working inside.

Phenolic is applied to metal surfaces. To prevent the appearance of corrosion on metal surfaces, anti-corrosion compounds are used.

Universal and acrylic is used for drywall (gypsum plasterboard and gypsum plasterboard). This is a material that absorbs moisture very well and requires an obligatory primer, especially at the seams and joints. It is also necessary to carry out this stage of work before laying the tiles.

Gypsum plasterboard (GKL) and gypsum fiber (GVL) are a material containing a gypsum base, pasted over with flexible and smooth cardboard. Wall cladding is made with such sheets, they are fixed to ceilings, and various partition compositions are installed inside the premises.

The firm "Knauf", being a manufacturer of drywall, has developed and introduced into production a primer for its processing. Primer "Knauf" is universal and has high quality indicators.

Plasterboard structures began to be installed more in rooms with high humidity. This opportunity presented itself due to the fact that a new composition appeared in the production of paints and varnishes and primers. Surfaces treated with it do not lose their original characteristics and remain unchanged for many years.

Latex primers contain the sap of a rubber tree, so they are classified as natural ingredients. The surface they treat becomes resistant to wear, water and moisture. The composition is ideal for substrates that crumble quickly (loose and old).

Types of facade primers and their properties

Each variety has its own purpose. Therefore, it is recommended to read the instructions before starting work and even before purchasing. The documents always describe with which one or another primer composition for outdoor use is best combined when it gives the best result.

The composition of such varieties has become widespread:

• Anti-corrosive;
• Microbicidal;
• Acrylic;
• Alkyd;
• Deep penetration. The technical level of strength is higher compared to analogs;
• Covering;
• Regular.

Each variety has its own purpose.

Composition of primer mixtures

When buying deep penetration facade primers, one cannot do without studying the packaging with the information given on it. It contains not only instructions for use, but also a detailed description of the technical characteristics. This applies to consumption, other similar information.

Facade primers are divided into varieties, including by composition:

Two-component polyurethane. They are considered universal. They are combined with concrete and plaster, other surfaces of various types. They guarantee high adhesion and strengthening properties of the existing base. Even when applied to wet surfaces, they do not impair the protective properties. This is an important characteristic;

Alkyd, synthetic origin. These are enamels and paint-primers, which are used only for metal or wood. For ceramic tiles, such a base is recognized as the best;

Acrylic primers for plaster facades, with suitable polymers as a base. They are also considered universal formulations. Includes water-dispersible group and deep penetration. No toxic substances in the composition, with the ability to dry quickly. Dilution with water is required to achieve a suitable concentration. They differ in their low consumption per 1 square meter. Especially suitable if the base is brick;

Mineral. With a composition that includes gypsum or cement, lime. With a thick consistency that can smooth out any unevenness on the walls

It is important to take into account the combination with certain materials when selecting. Quartz sand also requires this.

Which one to choose?

Many mixes are versatile and can be applied to different surface materials. However, it is still advisable to take into account the characteristics of the base and select the most suitable composition, taking this factor into account.

For wood

Wood is a safe and durable building material. But if the structure is not properly processed, its service life will be short-lived. Priming will help extend the life of the material and improve the appearance of the final finish.

The wood must be primed before puttingty according to the following algorithm:

• Degreasing.
• Antiseptic treatment.
• Elimination of defects.
• Padding.

If the walls are wooden, it is better to choose an alkyd type of primer for the layer preceding the putty. It is highly durable, has good performance properties and is designed to work at negative air temperatures. The alkyd mixture also has disadvantages: prolonged drying, the need to use "White Spirit", a rather toxic substance.

For concrete walls

A primer may be required to create a quality concrete wall finish. Since concrete is prone to rapid deformation, being sensitive to negative external and internal factors, a primer selected taking into account the characteristics of the surface will help to achieve the following results:

• Uniformity of the applied layer and, as a result, obtaining smooth walls, ready for puttying.
• Protection against destructive external influences.
• Ensuring the strength of the coating and a long service life.
• Economical consumption of putty when creating the next layer.

The primer for concrete walls under the putty can be alkyd, polystyrene, polyvinyl acetate.

Drywall

The question of whether it is necessary to prime drywall walls before puttingty is quite controversial, since here it is necessary to take into account the quality of the surface itself. If the drywall is clean and smooth, this is not necessary. And if there are irregularities on the surface, and there are visible seams between the individual sheets, the use of a primer will still be a necessary step.

Priming technology

priming process

1. Preparing the surface: remove debris, dirt, greasy stains, remnants of the old layer; we check the temperature regime in the room being repaired (the ideal option is up to +10 degrees, usually the work is planned for the warm season in order to speed up the drying process).

1. Knead the primer and pour it into a container convenient for work. Concentrated mixtures, according to the proportions indicated on the package, are diluted to the desired consistency, dry ones - diluted with water.

Important: carefully read the purpose and recommendations of the manufacturer's plant for working with the primer. You should have a clean, homogeneous mixture without lumps.

1. The tool for working with the primer is chosen according to personal preference, usually a wide brush or roller. Do not forget about personal protective equipment: gloves and a mask, if necessary!
2. Apply the primer to the wall in an even layer, allowing slight overlaps and avoiding sagging.

Important: before applying a new layer, be sure to check if the old one has absorbed well. Re-prime only on dry surfaces.

This is especially important if you decide to paint the wall in the room.

Does the wall need to be primed after finishing putty? We confidently confirm this fact, the leveled layer, like the base layer, needs impregnation and strengthening.

This is especially important if you decide to paint the wall in the room .. After the work done, we apply a finishing layer of primer to the putty, which will finally fix the surface

Thanks to the attention to detail, the correct choice of primer and adhesion between coats, we have obtained a durable and strong layer.

After the work done, we apply a finishing layer of primer to the putty, which will finally fix the surface. Thanks to the attention to detail, the correct choice of primer and adhesion between coats, we have obtained a durable and strong layer.

Possible problems

The most common problems at work:

• Doesn't dry! The main thing is to work with the products in accordance with the instructions. In case of violation of the norms of temperature regime, atmospheric humidity, sometimes such problems occur. The poor quality of the material can only be suspected if all the rules are followed;
• Covering is diminished. This is the problem of applying the mortar in a thick layer. The top layer has dried and the result is a film coating. And it does not allow solvent vapors to escape. Always apply in a thin layer and wait for drying, and then add the second layer;
• The coating is cracking. Basically, this happens due to non-compliance with instructions or through uneven drying. One part of the territory warms up more, while the other does not. Here you also need to take into account the material on which the primer is applied;
• Solution dripping during operation is also a common problem. The viscosity and the cooking method are wrong here.

The main thing is to work with the products in accordance with the instructions.

Classification of mixtures

The classification of putty materials was carried out according to several criteria. The sequence of grouping is determined by the key factors and properties of the putty, which combine the mixtures into the following classes:

Oil and glue. If you need the cheapest mixture, the group is suitable. It is not known whether the prospects for oil solutions will continue, because they are already considered the past century. The main disadvantage is the appearance of yellow spots through the paint layer and wallpaper.

Gypsum cement. Materials are much more expensive. Designed for a full range of general finishing operations.In products of domestic production, most often, the composition contains more cement than gypsum. According to the cement and gypsum base for the masters, the main purpose of the powder was determined - having covered a layer of plaster with soil, you most likely putty with the composition of the wall for further wallpapering.

Water-dispersive. Also from the category of gypsum-cement, however, they are necessarily produced in a batch with an aqueous polymer emulsion, respectively, containers are buckets. The advantage is that you do not need to learn on the packaging what to do and in what proportion to dilute the putty - the product is already ready for use.