Quite often, novice home masters wonder about how and how to plasterboard drywall. Start with the fact that GCR is also called dry plaster.
Why GCR is called plaster
Firstly, with the help of sheets of this material it is possible to align walls and ceilings, as well as to close up plane defects. Secondly, the installation of gypsum plaster is not associated with wet work. Thirdly, after installing the sheets, the wall becomes flat and smooth, which allows you to almost immediately begin finishing work. Some believe that it is not necessary to bring drywall to perfect smoothness. However, the opinions of experts in this matter were divided.
Do I need to plaster
If you also wondered whether plasterboard is plastering, then you should deal with this in more detail. Some argue that plastering sheets is not required - this is a vain undertaking and takes a lot of time and effort. Other masters argue that the process of applying plaster is necessary when the wall was subjected to stress and lost its original appearance.
In general, gypsum plasterboard can only be plastered when it has moisture resistance qualities. The composition should be applied in several passes, in thin layers, each of which is coated with a primer. To do this, use a deep penetration composition designed for gypsum-containing materials.
Summary
Understanding whether gypsum plasterboard needs to be plastered is a thankless task. Some believe that a thin layer of putty will be enough, while others argue that plastering the surface is necessary. If you want to achieve the perfect result, then you should carry out similar preparations, the features of which will be discussed below.
Additional recommendations on the drywall preparation process before applying the plaster
If you are thinking about how to plaster drywall for wallpaper, you should also know about the features of surface preparation. Due to the fact that GCR is most often mounted using screws, recesses and irregularities remain on its surface. Sometimes drywall is bent during installation, and sometimes a needle roller is used to create curved structures. After such an impact, a huge number of recesses remain on the canvases. All these shortcomings before wallpapering is important to eliminate.
The need to use a primer is due to the fact that it is important to increase adhesion between drywall and subsequent finishing layers. A primer must be applied to every centimeter of the skin. For this, a foam roller or a wide brush is usually used. It is not worth wetting the sheet too much, because otherwise it may become deformed.
After you have dealt with the question of whether plasterboard can be stuccoed, putty should be applied, which will hide the joints between sheets and recessed screws. A serpentine tape is applied on top of the putty layer. Where the sheets converge at an angle that can be external or internal, align the blemishes with perforated aluminum profiles that overlap the putty-covered corners.
The excess mixture should be disposed of by smoothing the surface of the profile. As soon as the drywall has dried after applying the putty, it should be primed again in the manner described above. Thus prepared surface can be used not only for wallpapering, but also for pasty mixtures or dry stone chips from minerals of different colors.
Advice
If you plan to prepare gypsum plasterboard before gluing the wallpaper using plastering, then the composition will help smooth out problem areas, such as potholes or dents. It is necessary to do this in several approaches, each previous layer should be given time to dry.
If you have to close up small potholes and dents, then the surface at the first stage is covered with a primer, and then a putty layer is applied, a little later - a layer of plaster. It must be remembered that the putty should not exceed 3 mm in thickness. If potholes have a more impressive depth, then plaster is indispensable.
Before plastering gypsum plasterboard, you should familiarize yourself with technology that does not recommend hiding frame mounting errors with a thick layer of plaster. This will save the surface from marriage, but over time, the sheets will not be able to hold the applied layer of plaster. This will cause their deformation and cracking, as well as peeling of the plaster layer. If you have identified quite large curvatures, then the sheets are best replaced with high-quality material.
Recommendations for applying plaster
If you wondered how to plaster drywall, you should know that the material is applied to the surface with a thin layer, and the base is primed first. If we are talking about granular coatings, then these can be pasty mixtures of factory production, which are already ready for use.
The application of the compositions is carried out by a spray or trowel, the thickness of the layer will depend on the diameter of the grains. The first parameter should exceed the fractionation by 1.5-2 times. Dry colored stone crumb is sprayed onto a surface that is pre-lubricated with adhesive.
Instructions for applying plaster
If you also belong to home masters, who faced the question of how to plaster drywall, then you should know about the features of such work. Once the installation of the sheets has been completed, their surface must be cleaned of settled dust. An industrial vacuum cleaner copes with this task perfectly. If this is not available, then you can use the tools at hand. A rag acts as them, which is preliminarily wetted with water a little.
At the next stage, puttying of joints, seams and irregularities is carried out. Once this layer dries, the treated area must be covered with a leveling layer. Using a primer suitable for drywall surfaces, it is necessary to treat the base with it. It is recommended to choose a primer for moisture-resistant drywall for these manipulations. Only after that you can start applying decorative plaster.
These works should be carried out at moderate humidity and temperature ranging from +5 to +35 ° C. The master should use a respirator or gauze dressing, as well as rubber gloves. After completion of work, the tool is washed, and the remains of the finishing material should be tightly closed and left in storage in a dry room. Sometimes plaster is used to restore a damaged layer.
Plastering the ceiling before wallpapering
If you have a question about how to plaster drywall, which is installed on the ceiling, it is important to familiarize yourself with the technology. For the reason that you will have to spend quite a lot of time under the ceiling, and applying the compositions cannot be called a convenient process, you should purchase a roller with an extension for the handle. With its help it will be possible to work at a height of up to 4 m.
Plasterboard plasterboard with your own hands in the ceiling area, having typed the mixture with a spatula from the container. The composition should be shifted to the trowel, and then firmly press the tool to the plane at an acute angle with respect to the surface. Plaster will be better if you use this method, abandoning the spray. A dense layer can only be achieved using a powerful compressor. It is important that the movements are smooth, the direction can be any, the main requirement in this case is that the composition is applied in a thin layer.
If necessary, then use a trowel to repeat the surface. The next batch of plaster is applied without a gap, close to the first portion. The smaller the portions, the less smears should be, in the end this will achieve a better effect. As soon as the first layer is dry, you can proceed to the formation of a finishing layer. It is necessary to carry out these works with a trowel, there should be more strokes with an overlap if you want to get a darker area of the coating. Instead, trowels sometimes use other tools like textured rollers.
Conclusion
Plasterboard plastering is necessary in the case when it is required to hide the installation defects and depressions from the fasteners, as well as the joints between the sheets. It should be remembered that the plaster is applied only after priming and puttying the surface. Once all the layers have dried, you can proceed to the final alignment before pasting the wallpaper. It is important to close the outer corners, which will also be finished with wallpaper.
The solution on the corners is superimposed in a minimum amount. It is important that it is only enough on the plane of the corner. The perforated profile is then applied to the corner and leveled using a building level. If you notice that the corner is sunken, then the drywall construction was not completely assembled. Correct the situation by putting more putty under the metal.