Preparing walls for wallpaper is levelingand surface treatment of walls. Plaster is used for leveling, and primer is used for treatment. If we talk about repairs, that is, replacing old wallpaper with new ones, then the preparation technology in this case will be slightly different from the preparation at the construction stage.
Scheme of cleaning a wall from old coating.
Repair or construction
When renovating, old wallpaper must be removed.Any takes this process into account. It is absolutely necessary, without this stage all further work loses its meaning. New wallpaper needs an even and smooth surface, it is impossible to achieve this without removing the old ones.
Wall priming scheme.After this, it is necessary to assess the quality of the plaster and tap the plaster layer. If you hear a sound indicating that there is a void under the plaster, then it should be removed in this place. If there are many such places, then it is easier to re-plaster the room completely. If it is decided to leave the old plaster layer, then it is necessary to check how even the corners are, if necessary, all planes must be leveled and achieve the most correct geometry of the room. Check the condition of the slopes on the windows, the position of the switches and sockets, the condition of the electrical wiring. If everything is fine or if so-called cosmetic repairs are planned, then you can prepare the room for wallpapering over the old plaster. But much more often the plaster layer has to be removed. Therefore, first about the plaster. Return to the table of contents</a>
Primary wall preparation
Scheme of filling seams.If we are talking about the construction stage, the first thing that the preparation technology provides for is plastering. Before starting to prepare concrete walls, it is necessary to decide on the electrical wiring, the position of switches and sockets, as well as all other wires (Internet, telephone, etc.). Then beacons are installed on the wall, which set the thickness of the plaster layer and allow you to correct irregularities. The corners are reinforced with plaster corners. After this, both concrete and brick walls are processed in the same way, they are covered with acrylic deep penetration primers, which significantly increase adhesion. Primers come from different manufacturers, may differ in composition, but they have the same principle of action - strengthening the surface and improving adhesion. It is convenient to apply the primer to concrete walls with a paint roller, and coat the corners with a wide brush. The primer is applied in two layers, each layer of primer must be dried, and then, after complete drying, you can proceed directly to plastering.
Methods of puttying. Necessary tools:
- putty knife;
- trowel (trowel);
- trowel angular;
- plaster bucket;
- rule;
- a container for mixing the solution;
- mixer-nozzle for a drill;
- grater and semifinished;
- grinding abrasive mesh;
- Grater with clamps for mesh.
There are two types of plaster mixes -cement-based and gypsum-based. Cement-based mixtures are used when a thick plaster layer is required, to fill large defects in concrete walls and for other types of rough leveling.
Options for cleaning old wall finishes.If the planes are very crooked and there is a need to cover the plaster several times, it must be reinforced with a special plaster mesh. Gypsum plaster is used for final leveling, it has a much shorter hardening time, so it is applied in a thin layer and often does not even require subsequent puttying. The application technology is quite simple: the mixture must be mixed according to the instructions, then transferred to the wall using a plastering bucket, leveled with a rule along the installed beacons and finally leveled with trowels and floats. If the defects are significant, then plastering must be done several times, covering each layer with a primer and waiting for drying. The final preparation of concrete walls is carried out with finishing polymer putties. They are applied with a spatula, leveled with floats and then cleaned with grinding abrasive meshes. The cleaning work is very dusty, so it is worth stocking up on medical masks or a respirator. Return to the table of contents</a>
Final preparation of walls for wallpaper
After you have finally cleared everythingplanes, a lot of dust has accumulated on them. To prepare the walls for wallpaper, it must be removed. A vacuum cleaner will help here best, but it should be taken into account that gypsum dust is very fine, and after such work, the filters in the vacuum cleaner will have to be changed. If there is no vacuum cleaner, then the walls just need to be washed with water. Then prime the walls again, let them dry, and you can start gluing the wallpaper.
