Do I need to primed drywall before shpatlevkoy? Features of processing gypsum cardboard, sealing joints

Before you start decorating plasterboard structures, be it arches or cabinets, you need to decide whether you need to primed the drywall before the putty. Typically, the preparation of walls for drywall almost does not require the solution of such complex issues, but the preparation of the sheets themselves for finishing finish can cause a lot of discussions among specialists. Disputes about whether there is a need to be primed before puttying, gluing wallpaper or painting, arise at least at least.

Do I need to dry the plasterboard?

When it comes to the question of whether a primer is needed for drywall before subsequent plastering, a lot of disputes arise. Some argue that it is necessary to prime only the fastening screws and seams, others have the belief that it is worth treating the entire surface. There is a statement that you can do without even applying a primer.

As practice shows, the best result can be achieved if you process the drywall throughout the area. There are several reasons for this. First, the primer is able to improve the adhesion of materials, reducing the consumption of glue, if you are going to paste wallpaper. Secondly, when you decide to paste new wallpaper, the primer will ensure easy removal of the old coating. Otherwise it will be difficult to separate the wallpaper, and sometimes they go along with the drywall, you have to change not only the finish, but also the sheets of the GKL. If you plan to paint drywall, then using a primer you can exclude the absorption of paint, it will be applied evenly and eliminate the formation of streaks and stains.

Selection of the composition for gypsum board priming

If you decide that priming drywall sheets is still necessary, you should go to the choice of mixture. There are several points to which you should pay attention. The firm-manufacturer is important. It is not recommended to succumb to temptation and acquire an unknown soil, the quality of which may be better. Pay attention to the manufacturer's recommendations. In the instructions you can find out the purpose of the soil. Those mixtures that are designed for outdoor work, are not always suitable for manipulation inside the premises, because the composition may contain harmful to human health substances. However, when deciding whether a drywall is to be primed before the putty, you can find mixtures among a huge range of products that are universal and suitable for all types of work.

The primer can be clipped in pink or blue, you should not abandon its purchase. Manufacturers paint compounds for ease of use, so that the master can see the untreated areas. The color of the primer will not affect the shade of the finish coat, because after drying the mixture becomes colorless. It is important to remember when choosing a primer, which is too cheap, compared to other products, may seem of inadequate quality.

Features of processing drywall primer

Now you know whether you need to primed drywall before the putty. Once you have selected the composition, you can start work. It is more convenient to do this with a roller on a long handle, and for hard-to-reach corners a brush is suitable. You will need a special tray with a ribbed surface, where the mixture is poured, the master should use protective glasses, which are worn even before work starts. If a floor covering has already been laid, for example, a laminate or a parquet board, then the surface should be covered with a polyethylene film before starting priming.

Primer for gypsum cardboard is applied to the entire area of the wall, do not exclude even the smallest areas. It is advisable to do this in two layers, each of which must dry well. If priming is applied to the finishing filler, do not do this until the surface is ground. Otherwise, it will not be possible to sand the surface. Finish the finish only after the primer has dried, the complete drying period is usually specified in the instructions.

Seam processing: preparation

When it is necessary to seal the seams, it is necessary to prepare the surface of the plasterboard. The master needs to make sure that the docking points are tightly attached to the frame. Each screw must be screwed into the surface to a depth of 1 mm, the cardboard should not be damaged. Further, the base is cleaned of dust and dirt, because the quality of seaming and the durability of the structure will depend on it.

Puttying gypsum board joints involves preparing the sheets themselves, or rather the end parts. Some experts believe that they need to be cut at an angle, which increases the strength of the seam and makes it convenient to seal. Others recommend to exclude this process, as it is believed that the narrowing of the edges is done by the manufacturer, and this is quite enough.

Preparation of the mixture

The sealing of joints in the next stage involves the preparation of putty. The bucket should be poured a certain amount of dry composition, pour it with water using a construction mixer and stir to a homogeneous mass. There should not be lumps in it. The mass should not flow off the spatula.

Preparation of tools

Before starting work, it is important to prepare tools, among them:

• Finished putty;
• putty knife;
• Wide brush;
• primer;
• A serpent.

You should make sure that there are no burrs on the seams, if necessary, you need to get rid of them using a wide brush. The seams are smeared with a protective primer, leaving it to dry completely, at the next stage it is possible to start sealing. On the spatula is recruited a little mixture, which must be added to the joints, smeared along. On the seam is superimposed a sickle and is spread with a spatula. The tape should be drowned in mass. To grind, you can proceed only after the surface dries. Polish the seams with a trowel or sandpaper. The surface should be flat, the seams are primed with a primer once more and left to dry.

The cost of the primer

Primer acrylic, whose price is 40 rubles. For 1 kg, is offered for sale by the manufacturer Brozex. This compound is completely ready for 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 acrylic primer, the price of which is acceptable, is a means to strengthen the bases of 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.

How to choose drywall

If you are thinking about the question of which drywall is better, you should initially understand its varieties, on sale you can meet:

• GCR;
• GCLO;
• GKLV;
• GKLVO.

The first variety is a traditional drywall, which is used for finishing office and utility rooms. The humidity and operating temperature of the drywall do not exceed the permissible standards. Humidity of air for the use of a wall made of such material should not exceed 70%. The second type of gypsum board is a fire-resistant material that has an increased resistance to fire. As for the GKLV, it is a moisture-resistant gypsum board that has antifungal components. The latter species is considered moisture resistant and fire resistant, combines the properties of the above materials.

Pasting wallpaper on gypsum board

In order to paste wallpaper on gypsum board, you should prepare the surface, primetovat it and seal the seams. Initially, it is necessary to put vertical marks on the wall that correspond to the width of the roll. The layout will determine the total amount of material. It is recommended to coat the adhesive with a roller. First it is applied to the inner surface of the wallpaper, then the wall is rolled. Stick wallpaper on gypsum cardboard better by using the help of another person. It is recommended to glue the sheet from the top down, leveling it from the center line to the edges.

Conclusion

When deciding whether a drywall should be primed before the putty, it's worth paying attention to the financial question. For the reason that the cost of the primer is not so high, and its consumption is small, the acquisition will not significantly affect the cost of repairs.