The design of wall surfaces with wallpaper or paint coatings makes the highest demands in terms of the condition of the original coatings. Not only the requirements for the reliability and cleanliness of the base must be observed, but also the clear geometry of the entire working site must be maintained. The technology of finishing drywall for wallpaper can be called optimal in terms of achieving these preparation tasks. Another thing is that the quality of its implementation will depend on many factors, including not only the skills of the performer, but also the chosen method of editing.
Features of drywall as a finishing material
Gypsum board sheets are a light natural material for interior surface cladding, thanks to which you can effortlessly level the base for further laying of a decorative coating. In this case, we are talking about wallpapering, the structure of which is sensitive to the slightest flaws.surfaces. Initially, for such purposes, it is recommended to purchase large-format plasterboard panels with the expectation of a minimum number of joints. Installation is carried out by glue or frame method - the main thing is to provide a flat surface with minimal drops and slopes.
Theoretically, the finishing of plasterboard walls for wallpaper can be omitted if high levels of alignment have been achieved and technological gaps with mounting holes are completely hidden. But for greater reliability and preservation of insulating functions, experts still advise making a base coat of finishing materials with a primer and putty. The presence of an intermediate layer will eliminate the risks of the negative influence of cold bridges and increase the structural strength of the decorative design.
Sealing joints between sheets
This is the final touch after the installation of drywall and the first step in preparing the lined walls for wallpapering. Its essence lies in the point sealing of the remaining joints between the drywall sheets and the fastening holes, if the material frame installation technique was chosen. This finish is distinguished by an emphasis on structural function. The material for filling the recesses should fit into the structure of the panels as organically as possible, while maintaining its technical qualities.
The best choice of material for such a drywall finish for wallpaper will be a gypsum putty mixture, which, after hardening, can be easily corrected with a finely abrasive grinding tool. In the process of sealingthe composition must penetrate the entire depth of the seam and into the recesses left from the mounting hole. At the same time, if large panels were installed in order to completely level problematic surfaces, then it is advisable to putty the joint gaps using a reinforcing mesh to ensure the greatest mechanical resistance of the coating.
Finish drywall corners
Special attention is paid to the corners of the structure as the areas most exposed to external influences. They should be reinforced with special profiles in combination with the same gypsum putty. Moreover, you can choose from several options for profile fittings:
- Steel galvanized corners. The strongest and most durable option, but it also requires an appropriate base for mounting. Suitable if thick panels are used with an appropriate layer of putty.
- Aluminum corners. Lightweight, stainless and generally easy to install products that are easy to mount with your own hands. Finishing plasterboard under wallpaper with aluminum inserts holds its shape well, but also requires careful surface sealing with a thick layer of putty with a pre-primer.
- Plastic corners. Lightweight version of the corner profile with low requirements for external embedding. This solution is suitable if further application of paints and varnishes is planned.
How to choose the material for finishing drywall under the wallpaper?
As in the case of joint sealing material,it is desirable to focus on compositions of gypsum filler. It should be an environmentally friendly product, although mixtures with polymer additives should not be completely excluded. Nevertheless, the coating is used not only to create an even layer, but also to maintain a number of protective and insulating functions. The size of the particle fraction should be small - about 0.15 mm. As for the volume, it depends on the planned thickness of the layers. So, if it is planned to finish drywall for wallpaper in a wooden house, then the coating should reach a thickness of 3-4 mm. Accordingly, the consumption will be about 2-3 kg per 1 m2. In the case of ordinary concrete walls, when finishing, you can limit yourself to a thickness of 1 mm - then the consumption will fit into 0.8-1 kg per 1 m22.
Preparing for finishing events
Even when laying a thick layer using high-strength putty compositions, preparatory procedures should first be performed. First of all, the reliability of the drywall fastening is checked - all flimsy and weak areas must be adjusted and, if necessary, updated, since such repairs will not be possible after finishing. Further, the entire surface of the coating and especially the edges are cleaned from dirt, dust and lagging fibers. For this, a light grinding abrasive is used, but without a radical intrusion into the structure of the sheets.
Before finishing the drywall under the wallpaper, it is important to eliminate the slightest traces of dust, so it will not be superfluous to clean and industrialvacuum cleaner. After completion of all preparatory work, the surfaces are dried.
Primer surface
Applying a base coat, the purpose of which is to eliminate the recesses and irregularities left after sealing the seams and mounting holes. Also in the list of tasks of the primer is the function of adhesion - that is, the adhesion of putty to the surface of the panels. As for specific compositions for priming drywall for wallpaper and painting, vapor-permeable and quick-drying mixtures based on polymer dispersion are best suited for this.
These coatings are applied after dilution with water (ratio 1:1) with a brush, brush or roller in the thinnest layer. Quick-drying formulations require an exposure of about 3-4 hours. This interval must be strictly observed and proceed to the next step without delay until the new layer is covered with fine dust.
Putty instructions
Solid laying of gypsum putty is carried out using a wide spatula with a handle. The first layer should correct the structure of the primer, after which the final layer is applied directly. It should be leveled with a rule, smoothing out irregularities and other defects. The instructions for finishing drywall under wallpaper also note that in order to achieve a high-quality leveling effect, the surface must be processed with a grinding tool after hardening. If work is carried out in a room with high humidity, then a waterproofing film is also included in the interlayer structure of the putty.
Conclusion
The use of drywall as a structural base for the subsequent laying of decorative materials justifies itself for various reasons. For example, this technology makes it possible to achieve a combination of leveling and surface cleaning effects, which is especially important in the presence of problematic walls with defects and deviations in the base structure. But the key role in terms of the final result, of course, will be played by the finishing of drywall for wallpaper with its positive technical and operational characteristics.
Problems with choosing the right composition today will not arise, as leading manufacturers of mortars offer extensive families of primers and putties specifically for gypsum-based panels. It remains only to correctly lay the composition on the prepared structural base, taking into account the individual requirements for a particular decorative coating.
