Wallpapering is the most popular type of wall decoration. It is easy and quick to glue wallpapers, this process is relatively simple and does not require any special skills or high qualifications of the master, but this coating makes quite high demands on the surface quality.
Often the surface of the wall has to be pre-leveled with the help of plasterboard cladding, and only then the wallpaper should be glued. Before you glue the wallpaper on drywall, it is necessary to properly prepare its surface. It is very important to follow the order of operations outlined below.
Drywall preparation for pasting wallpaper is carried out in stages. Each of the listed items must be performed without fail.
The application of the primer layer contributes to a better adhesion of the putty to the drywall surface, and also protects the latter from the development of mold and mildew. The most commonly used acrylic primer, although some masters prefer other types. Primer is sold both in finished form and in the form of compositions, of which the working mixture must be prepared by yourself. In the latter case, it is very important to strictly follow the instructions and recipes offered by the manufacturer. Primer drywall under the wallpaper is performed using a conventional brush, while the mixture is distributed over the entire surface of the wall as evenly as possible. When the entire wall is processed, you should pause, waiting for it to dry completely. The time it takes for the primer to dry is indicated on the packaging.
Serpyanka is polyester tape or glass fiber tape with adhesive applied on its surface. Outwardly, it looks like an ordinary medical bandage. Serpyanka should be glued as closely as possible to the joints between the sheets, avoiding the appearance of airbags. If serpyanka poorly glued, you can add a small amount of PVA glue.
After gluing the serpyanka into the seam, put the required amount of putty, which is then leveled. Thus, the joint becomes invisible, merging with the overall surface of the wall. Having smoothed the layer of putty, after drying it, it should be rubbed with a sheet of emery paper with fine-grained coating.
Even if the wall seems perfectly flat and smooth, before you glue the wallpaper to the drywall, you need to pierce it. Sticking wallpaper on a drywall without putty can lead to the fact that the entire wall will have to be repainted. After all, sooner or later the time of new repair will come, when the wallpaper will need to be removed from the wall. If they are glued directly onto the drywall, then they will surely “grab” the cardboard covering of the sheet. At the same time, damage to the gypsum core itself is not excluded. In addition, on light wallpaper, after drying, seams between drywall sheets may appear. Thus, the appearance of the walls will be hopelessly ruined and all the work will have to be redone.
Mixture for putty on the basis of cement or gypsum can be prepared by yourself (the composition and method of preparation are given in reference books and on the Internet), and can be purchased in finished form. Two types of putty are sold in stores: starting and finishing. The first allows you to quickly and accurately level the surface of the wall, the second - as is clear from the name - serves for the final finish, gives the surface a special smoothness and removes minor defects. The solution is prepared in a sufficiently capacious container with the addition of water. For a high-quality homogeneous mixture, it is better to use a construction mixer.
Drywall putty for wallpaper is done with three spatulas. One - the smallest - serves to collect the putty from the tank, the other two (40 and 60 cm long) - for applying and leveling the solution. The master makes long and smooth circular strokes, holding the tool at an angle of 45 degrees. The layer of putty must be uniform, its thickness is from 1 to 2 mm. After applying and smoothing the next portion with a small spatula, remove the residual solution from the large one and repeat the operation from the beginning. Upon completion of wall finishing with a starting putty, it will be useful to prime the surface again. Do not worry about small defects, such as pronounced strips of putty solution. They will be eliminated during the next stage.
After drying, putty must be sanded with emery cloth. First, grout with coarse-grained paper, then fine-grained. This work requires great care and special attention; it should be done carefully and without haste.Careless movement can lead to the formation of chips, so that the work on the putty of the wall will have to start anew. Keep in mind that grinding putty is accompanied by the formation of a large amount of fine and very caustic dust. Therefore, before starting work, care should be taken to protect your eyes and respiratory tract with personal protective equipment.
Grinding of the puttied wall surface. Photo - bellaidea. es
Before you glue the wallpaper onto the drywall, you need to apply a primer to the layer of putty. To the surface treated with primer wallpaper stick better and do not lag behind after drying. At the same time, the primer layer does not allow the substrate to absorb the glue too actively. Experts recommend applying a primer coating in two layers. In this case, the second layer is applied only after the first one has completely dried.
First of all, before sticking wallpaper on the wall, apply vertical marks corresponding to the width of the roll. This marking helps to determine the total number of rolls, as well as facilitates the gluing of wallpaper cuts. If a pattern is applied to the surface of the wallpaper, the adjacent sheets must match each other, otherwise vertical joints between the canvases will be noticeable.
Drawing horizontal marks on the walls. Photo - diynetwork. com
Particular attention should be paid to the instructions for the preparation of glue. Usually it is indicated on the packaging of the composition. In most cases, the process of glue preparation does not cause any difficulties, however, it is very important to properly observe the ratio of the amount of powder base and water. People often ask: "Is it possible to glue wallpaper on drywall immediately after glue preparation?" No, you should not rush in this case. The finished solution should stand for some time until the reaction is complete.
Wallpaper paste is best applied with a roller. First, glue is applied to the inner surface of the wallpaper, and then rolled into the wall in the place where the sheet will be glued. Now the canvas can be pasted. It’s almost impossible to do this work alone, so get an assistant before starting work. The sheet must be glued from top to bottom, leveling it from the center line to the edges. When the sheet is completely glued to the wall, it must be carefully smoothed out with a cloth, removing the folds and air bubbles under it. Sheets need to glue without overlap, only butt. Particularly attentive and careful should be in the corners of the room. The canvas of the wallpaper is first glued in the corner (starting from the top), and only then on the adjacent wall.
Like any aqueous solution, wallpaper glue is able to conduct electricity. Electric shock when wallpapering is not so rare. Therefore, before starting work, be sure to de-energize the room.