Is it possible to paint a car body without first priming? Primer Is it possible to do without a primer?

To ensure that the newly painted surface does not swell and peel over time, and that the tiles do not fall off in the near future, it is best to use appropriate primers. The most simple examples primers are used to coat wooden surfaces and walls before painting, as well as red lead, used for metal processing. Currently on the market there are special primers and primer paints intended for processing various types painted surfaces. Primers penetrate relatively deeply into the base and most often form matte surface, which provides enough good adhesion followed by coating.

When purchasing a primer, be sure to read the product instructions. Modern market offers a fairly wide variety of this group of materials depending on their intended purpose. Primers can be universal (for various surfaces), special ones (for wood, galvanized surfaces, concrete or plaster), as well as anti-fungal, anti-corrosion, etc.

Very great importance It has preliminary preparation surfaces for painting, including cleaning from dirt and dust, removing fragile and old paint, and, if necessary, also cleaning from traces of rust, degreasing, filling cracks and irregularities, as well as grinding. Typically, preparatory work takes up almost three-quarters of the total time. Of course, it is possible to apply paint to a surface without using appropriate primers, but in some cases such savings can be quite expensive.

Anti-corrosion primers are used to prevent metal from rusting. At home anti-corrosion primers are used in cases where a pipe in the bathroom has rusted, or the garage has begun to rust.

Action and cases of application antiseptic primer compositions become clear from their very name. Primers of this type prevent the development of fungi and bacteria in the treated surfaces. The effect of this type of primer is very simple: it promotes good adhesion of the paint to the surface and at the same time protects it from various “infections”.

Impregnating (deep-penetrating) primers perform a strengthening function and in most cases are used for relatively weak plasters, when processing sheets of drywall before gluing ceramic tiles, as well as for impregnating wood before applying the main coating. Impregnating primers reduce the absorbency of the base, which allows you to significantly reduce the consumption of the base coating material, and also promotes uniform application paint and varnish material. Such primers are partly hydrophobic, that is, they protect the treated base from moisture penetration.

Primers are also divided into those intended for interior or exterior use.

Depending on the quality of the surface, both alkyd primers and water-borne acrylic primers can be used.

Alkyd primers saturates the base quite well and also provides the required adhesion for topcoat paint. Alkyd primers are one of the best primers under paint for untreated wood.

Acrylic primers , as well as , are applicable to almost all types of surfaces (fresh and old plaster, wood, concrete, cement, fiberboard or chipboard). Acrylic primers have very attractive consumer qualities - they have virtually no pungent odor and dry in 2-4 hours, and are diluted with plain water. The only thing is that it is not recommended to use water-soluble primers to protect ferrous metals, since they do not prevent corrosion processes and over time, rust spots may appear on steel surfaces.

Facade primers are primarily hydrophobic materials. They prevent moisture from penetrating into the base (for example, brick, concrete or plaster) and are also very vapor permeable.

For wood surfaces located outside the house, it is recommended to use deeply penetrating antiseptic compounds . It is especially necessary to impregnate the joints and cuts of wood surfaces with them, since wood absorbs moisture well through open fibers.

In some cases, the paint itself can also perform the primer function. diluted with an appropriate solvent. However, using it in this capacity is not entirely economical.

Polyurethane and epoxy primers Usually they are polyurethane and epoxy paints diluted with a specially prepared solvent. In such cases, each manufacturer has its own own recipe preparation of primer compositions.

Shellac primer , is primarily intended for processing on wooden surfaces knots on which resin protrudes. It can also be used as translucent insulation paintwork stains of soot and rust on any absorbent surfaces.

The main purpose primers for metal – This is protection against premature corrosion. It should be noted that for different metals

One of necessary conditions For quality repairs is . Any surface must first be prepared for the upcoming finishing work.

Is it possible to do without a primer?

The answer to the question is completely clear. Regardless of material base surface it is necessary to create conditions so that subsequent coatings are firmly attached to it. It is for this purpose that a primer is used before puttying, which penetrates the base and can significantly improve the quality of the subsequent finishing.

If you intend to carry out a truly decent repair of walls and ceilings, then they must be primed, otherwise you will have to repeat the repair work in the foreseeable future. The primer allows you to:

• remove dust from the surface, which will later allow the plaster to lay down in an even layer;
• strengthen and strengthen it so that cracks, stains, and stains do not appear on the walls in the future;
• protect the walls of the room in which the renovation is taking place from subsequent penetration of moisture into them.

How to prepare walls for priming

First of all, you need to remove wallpaper, paint or whitewash from the walls. For this purpose, use the following technologies:

1. Washable wallpaper is very difficult to remove due to the waterproof film, so first deform it outer layer using a wire brush or needle roller. Wet the surface with water and wait until it is absorbed, after which the wallpaper will be easy to remove from the wall.
2. Vinyl wallpaper, due to its structure, will not cause problems. Once wetted, their panels can be easily removed.
3. Paper wallpaper is the least durable, so it is not easy to remove. For this purpose, you can use special liquids or a steam generator, but if associated costs you can’t afford it, use the time-tested method. Perforate the wallpaper, moisten it with water using a sponge, let it soak in and peel off the wallpaper with a spatula. In addition, for steaming problem areas You can use a steam iron.

• Removing whitewash dry will cause you a lot of trouble. If whitewash is applied thin layer, it is easy to remove with a scraper after sprinkling with water. Thick layers are removed in parts with periodic wetting.

Instead of water, you can use a paste or solution containing 5 tsp. soda, 2 tbsp. l. pre-crushed laundry soap and 10 l. warm water.

• To remove old paint, use one of the following methods:

1. mechanical (with a spatula);
2. thermal (pre-heating the paint with a torch or iron);
3. chemical (using special solutions, after application of which the paint can be easily removed with sandpaper).

We calculate expenses

If you do not want difficulties to arise during the work, which will no longer be possible to get rid of, calculate the cost of materials in advance. Please note that material costs and time spent on priming, puttying and plastering procedures take up to 1/3 of the total costs.

Try to consider the following:

• square;
• surface type;
• features of the selected material (the rate of its consumption is indicated on the packaging);
• the need to leave a small reserve.

How to choose a primer material

The next step will be the selection of soil. Modern technologies offer the consumer a variety of reliable and high-quality primers, allowing you to find exactly the product that is best suited for your purposes. Primers are of the following types:

• Acrylic.

They are universal, so they are used on most different surfaces. Their advantages include the complete absence unpleasant odor, ability to work on extremely porous surfaces and drying speed. But it must be taken into account that this type is not suitable for working on ferrous metals; over time, rusty spots will appear on the primer.

• Alkyd.

When thinking about what to prime, pay attention to alkyd primers, which are divided into 2 subtypes: phosphate or zinc chromate. The first type is distinguished by its anti-corrosion properties, and the second - by its versatility, although it will not be appropriate when applied to plaster. They dry much more slowly than acrylic ones; drying requires at least 15 hours (at a temperature of at least + 25°).

Priming the surface of a clean wall

• Gyphthalic.

They are suitable for application as the first layer on metal surfaces. For completely dry they need at least 24 hours (temperature should be room temperature).

• Perchlorovinyl.

With all the advantages in the form of quick drying (1 hour) and versatility, perchlorovinyl primers should be applied only to external surfaces residential premises, they contain toxic components.

• Polyvinyl chloride.

This type is used for external works and is suitable for metal and concrete surfaces.

• Polyvinyl acetate.

Drying completely in half an hour, they still have limited area use - only under the appropriate paint.

• Polystyrene.

Due to the fact that these types of primers consist exclusively of toxic solvents, they cannot be used for interior spaces.

Choosing the wrong mixture for a primer with your own hands can lead to the fact that the costs required for repairs will significantly increase. Moreover, application in interior spaces primers intended for other purposes pose a serious risk to health, so carefully study the characteristics of the type of coating you are interested in.

What nuances need to be taken into account

To take full advantage beneficial features primers, take into account all the nuances of the process. If you are planning to do it yourself, follow these rules:

• the surface of the walls being treated should be as clean as possible;
• when hit primer mixture on another surface or clothing, wash it off immediately with a wet cloth;
• avoid drips during priming;
• there is no point in diluting the entire primer at once;
• It is better to carry out work wearing safety glasses, a hat and gloves;
• After finishing the primer, immediately rinse the bucket, brush, and measure.

What mistakes to avoid

If you want to do without a primer or save too much on the product, then the walls will not be able to preserve good condition during for long years. You will get a defective surface from which plaster and putty will most likely fall off. It’s worth asking a professional about the need for priming, and he will tell you that you can’t skimp on this type of work.

If you are not sure how to properly prime walls before puttying, do not try to replace materials with water-based paint; it has completely different properties, both technological and chemical. This paint does not contain a sufficient amount of binders and additives. Because of this, both it and polymer dispersions create extremely weak, unstable films, rich in dry components, which, for obvious reasons, strongly absorb water. In your future work, even using the most expensive materials. Therefore, do not try to save money, buy quality material, adhere to the consumption rates and proportions indicated on the packaging.

Priming technique

Work technology

Before puttying requires the following tools:

1. sponge;
2. bucket;
3. respirator;
4. pallet;
5. roller

Remove absolutely all loose particles from the walls. Clean the surface from dust, get rid of stains, make sure there is no mold or mildew on the wall. Please pay attention Special attention this stage, otherwise there is a risk that the fungus will later spread to much large areas. Any bleaching agent that contains chlorine should be applied to surfaces affected by fungus, after diluting it with water (1:3). Be sure to wear a respirator, goggles, and rubber gloves to avoid contact with the spores. You can also purchase special remedy, which allows you to get rid of mold and fungi; in addition, some types of primer perform a similar function.

When the wall dries after antifungal treatment, you can move on to the primer itself. Apply a layer of primer to the surface, mixing it thoroughly. In most cases, one procedure is enough, but the application instructions state that loose walls that absorb liquids well require several layers. primer, if necessary, wait 2-3 hours for the first coat to dry before applying the second. Take your time further work and let the primer dry. Do not forget that if the top layer is dry, moisture may remain inside.

When the primer is completely dry, you can proceed to puttying the surface. Remember that it will be almost impossible to wash off the dried primer, so cover all furniture, if any, in the room.

In order for any coating to last as well as possible for a long time, the walls need a preliminary primer. Only if it is carried out will you receive high quality further finishing, this procedure will improve the adhesion of materials and relieve the walls from later accumulation of moisture in them. The putty will also last longer without crumbling or cracking. Those who decide to do without this procedure will notice that the repair will soon require updating, and will no longer neglect the primer.

Interior decoration in premises is very important, since with its help the very same individual style. After all, many modern materials, have more durable properties. Accordingly, the repair process becomes efficient and easy. Not a single repair can now be done without a primer as an important component.

On construction market presented a large number of a wide variety of primers, from various manufacturers. Depending on the type of surface, the appropriate primer is used, the price will naturally also depend on this. According to their properties, primers are divided into: universal, deep penetration and for interior work. An important fact is what components the solution consists of. Although most manufacturers produce environmentally friendly soils, it is worth paying attention to their components.

More high price, does not always mean the best effect. For example, finishing materials based on acrylic are the most affordable and are not inferior in quality to other products. That is why it is in demand and acrylic primer, as the most suitable for most types of work.

Deep penetration primer, penetrating deep into the surface being primed, improves adhesion and strengthens the base. This primer is used for porous or loose structure of bases.

Being the basis for high-quality puttying, the primer for walls should be selected for each specific case. In our store, we offer a wide selection of primer solutions for various types works You can always consult online and order required amount from the store manager.

Perhaps the most universal material in construction we can safely call soil. It is used in preparatory work before painting, puttying, wallpapering and, moreover, on different surfaces: plaster, metal, wood and others. And indeed, when various works both inside and outside. It promotes a more durable connection of the surface itself with paint and varnish and other finishing materials, and also prevents corrosion and various peelings from the surface being treated. Therefore in repair work oh, we can’t do without a primer.

Perhaps you have started renovations in your apartment or house. It is clear that there is a lot of work to be done:, etc. Which ones exactly? finishing works Do I need to use primer? Why is it important to do this processing? In this article we will look at these issues, finding out when to prime the walls or ceiling.

Before painting the walls

It must be said that it is not always appropriate to use wallpaper when decorating rooms. Sometimes the most effective and, moreover, inexpensive method It may well be the painting of the walls. At first glance, this conversion method is not so complicated. As a rule, there are no particular difficulties when performing this work. But there are still nuances that are worth learning about. For example, should walls be primed before painting? It is necessary, but before priming the wall, it is mandatory to use unsuitable plaster or paint.

Be sure to remove grease stains with a washcloth soaked in an alkaline solution. You should not leave dark spots of mold on the wall. Remove it with a special cleaning solution or a stiff brush. Now you can prime.

Primer cannot be applied to a freshly plastered wall. This can be done after 4 weeks. After priming, the walls should pass for a day and only then can they be painted.

The primer must be stirred well, and, if necessary, add a special product recommended by the manufacturer. Typically the primer is applied in one layer. But it also happens that it is necessary, according to the recommendations indicated on the can, to apply several layers. When walls are primed in more than one layer, this indicates that the surface of the wall has absorbency in its structure or in the room high humidity and you need to create an appropriate waterproof barrier (acrylic primer varnishes have this property).

The next layer must be applied after the previous one has completely dried.

The primer is applied either to the plaster or to an already painted surface, and it does not matter what kind of paint it was: water-based, acrylic, alkyd, oil-based or another. IN in this case The primer is a binder for particles of paint or plaster, which will invariably make the base on which we will apply paint more uniform. It is worth noting that this also contributes to greater savings in the finishing agent, since the absorbent properties of the surface being painted are significantly reduced.

Before plastering the walls

Considering the properties of the primer to bind paint (or other materials) to the surface, it is quite logical to conclude that priming before puttying is not only necessary, but also important. If this is not done, then over time all the putty on the wall may crack or peel off and crumble.

If there are several layers of putty, then after each layer is applied and the putty material dries, it is necessary to prime the surface, and even after applying the finishing layer of putty, you need to let it dry, then sand it and then coat it with a primer.

Please follow the advice of professionals, as well as the recommendations from this article, and then you can avoid wasting money, time and effort. So is it necessary to prime the walls when applying any finishing material to them? Answer: it is necessary.

Video

Is it necessary to prime the walls before puttying? You will get the answer by watching this video:

Watch the video about the original way priming the walls.

From the author: Thank you for visiting our repair and construction portal, dear reader. Relatively recently, I had to face one seemingly simple but pressing construction question: how to prime walls? The fact is that I had an approximate answer to this question, therefore, I knew how to do everything correctly, but one colleague began to convince me that in my specific case You can do without this procedure.

I knew that before painting or wallpapering the walls need to be primed. But many owners of apartments in which such a wonderful process as renovation is taking place are seriously wondering: is it possible to do without a primer before painting?

In fact, neglecting primer is neglecting the rules of finishing - in principle. But first things first. Now we will find out why the priming procedure is so important when performing repair and finishing work.

Why do you need a primer?

When performing major repairs in an apartment or private house, as a rule, you cannot do without gypsum boards (plasterboard sheets). They build from them dropped ceilings, erect walls, in addition, they also level the surface of curved walls. In houses built Soviet period this question is especially relevant.

We will not consider the alignment procedure now - there are separate articles for this on our website.

Now we will present several arguments in defense of priming walls, or more precisely, we will determine why priming is such an important procedure that cannot be avoided.

To get rid of mold, there are special antiseptics, which must be immediately applied if necessary. Primer helps finishing materials interact properly with the surface. Simply put, it promotes the correct application of putty and paint.

It is also necessary to prime the walls if you intend to bring them to perfect condition. Of course, no one here is talking about some kind of similarity mirror surface, but the walls for wallpapering must be perfectly smooth and clean, without the slightest roughness. This is a fact that, unfortunately, builders sometimes neglect during renovation work.

In addition, you are unlikely to like it if some kind of light appears through your new light wallpaper. dark spots, which cannot be removed except by redoing the finishing. Well, primer helps turn your walls into a perfect canvas. After it, you can do literally whatever you want with the walls, without fear that something might go wrong.

I think everything is clear with this question. But what about walls that are finished with plasterboard? After all plasterboard sheets and so perfectly even. After all, you can putty the joints, and then calmly proceed to wallpapering or painting.

Not really. As for painting, it’s clear: if you want the paint to interact perfectly with work surface(by the way, for painting walls and ceilings in an apartment/house/office […] I recommend using water-based paint), then a layer of primer must be applied to this very surface.