Despite the seeming simplicity, putting the wallpaper - a responsible event, from which the comforts may depend on the appearance of your housing. But only little to be able to glue wallpaper, you need to know how to correctly prepare the walls for them. Any material, whether it is a brick wall or drywall, has its own operational features. In this article we will tell you how to properly prepare walls under the sticking of wallpapers.
Preparation of walls in the new building
The main task of the preparatory stage is to create a flat, smooth and dry surface of the wall. Only then can be sure that the wallpaper will be glued properly. Gypsum putty as it is impossible to suit this goal, if we are talking about "bare" walls in just a built apartment.
Preparation of walls under wallpaper consists of several stages:
- Spray - layer should be 3-9 mm. The consistency of the spray should be similar to the thick sour cream. Its main task is to fill and align small roughness and irregularities.
- Primer - layer thickness not more than 6 mm.
- Covering - wall covering layers of plaster 2-4 mm thick. The main task is to create a thin film that does not give moisture from glue to penetrate deep into the wall.
- Grouting sandpaper - elimination of irregularities and creating a perfectly smooth and smooth surface.
How to remove old wallpaper
If you are going to glue new wallpapers, and on the walls still "bang" old, they need to get rid of them. Glue new wallpapers on top of older not recommended! This is non-hygienic, unprofessional and will lead to the fact that all the coating can very quickly come into disrepair.
You can remove old wallpaper in many ways, but it is better to prepare for what you have to use several of them at once. To do this, it is necessary to prepare the appropriate "Equipment":
- spatula (better narrow);
- soft sponge roller, sponge or sponver;
- water;
- means for soaping dishes, vinegar or special means to remove old wallpaper;
- steam generator or iron.
With bare hands
In the location of heating devices, such as batteries, wallpaper is easier than everything. They can be completely removed by bare hands without additional help. Try picking up the edge and pull it from the bottom-up. Perhaps your wallpaper was glued to not very high quality glue, and easily depart from the wall. Periodically help yourself with a spatula so as not to draw wallpaper with nails.
Water
If wallpaper is still glued to conscience, you will have to resort to the auxiliary methods. Wet a small piece of wallpapers with warm water with a sponge, roller or sponge. To enhance the effect, you can dilute vinegar or dishwashing liquid in water. If you breed vinegar, prepare for a specific smell.
So, moisten the wallpaper with water, wait a couple of minutes, picker the bottom edges and pull the bottom. Small pieces of wallpapers can be carefully removed with a rigid sponge for dishes or the same spatula.
Important: It is recommended to turn off the electrician in the house before the start of "water procedures" or take the power outlets to the moisture so that the moisture does not provoke a short circuit.
Useful advice: so that the water is faster and evenly impregnated with the wallpaper, carefully superpose them with a knife or walk along the surface with a needle roller, and then wet it.
Ferry
Human resourcefulness has no boundaries. So for easy removal of old wallpapers, a peculiar way was invented - you need to treat the wall with hot steam and easy to remove the wallpaper! To do this, you can use the steam generator or the usual iron. If you use the iron, swallow old wallpapers through a wet cloth or turn on the vertical evaporation function. In this way it is easy to remove the wallpaper from large walls.
Special compositions
Preparation of walls for pasting wallpaper will be much faster if used special compositions for removing old wallpaper. You can buy them in almost all building stores. Apply the composition is recommended in gloves with a sponge or roller. Feature of such substances in rapid penetration (much faster than water) and impregnation of old wallpaper.
Preparation of painted walls
It is much more complicated by the preparation of walls under the wallpaper if the surface is covered with old paint, especially on an oil basis. Then you have to clean the wall and remove the coverage that it will take much more time than getting rid of old wallpaper. Some people think that it is enough to sand the surface and make a serif on it for the "best" clutch of wallpaper wallpapers, however, such a solution will lead to the fact that new wallpapers can be discarded at any time.
Ways to remove old paint to prepare walls under the wallpaper:
- construction hairdryer - Quickly removes even the most resistant paints, but it can damage the integrity of the wall. Usually after such a cleaning, the wall must be thoroughly plastering. The principle of operation is very simple - a certain section of hot air is heated by a certain segment of the wall, after which the paint is removed by the spatula. It follows to work with a construction hairdryer only in the respirator, with an open window and good ventilation, since the heated paint sends toxic substances into the air.
- Grinder - the grinding machine in concrete or bollard with a metal-brushed metal is required. The main disadvantage - a lot of dust is formed during the cleaning process, so you need to open all the windows and lock the doors leading to neighboring rooms.
- A special washing for paint is a very toxic substance that literally disrupts even the forced layers of paint, turning them into a liquid substance that is easily considered a spatula. It is necessary to work with a washes in thick rubber gloves, protective glasses and in the respirator.
When the paint is removed, you can proceed to align the walls with putty. If the paint could not be removed completely, you can use the primer of beta contacts or to coat the wall with glue for vinyl wallpaper, which gives a strong clutch with the surface and forms a thick smooth layer. Thus, the wallpaper preparation is carried out under vinyl wallpaper and conventional wallpapers.
Spike curve walls
When nothing superfluous left on the wall, appreciate how smooth it is. In most cases, after removing the old finish, small pits, chips and scratchs from the spatula remain on the wall. If you shot old wallpapers and paint with your own hands, and for further work you plan to hire the masters, the cost of preparing walls to wallpaper will depend on the state and curvature of the wall.
Leveling the walls today is much easier than before. For this, special leveling mixtures and putty are sold. On how to put the walls, you can learn in the video clip below:
The putty is relevant only for not too curves of walls. If you are watching strong height differences, deepening and bugs, it makes sense to think about the overhaul of plasterboard or plaster on beacons. Further information on the alignment of the walls of the plaster can be found in the article " Wall alignment with do-it-yourself».
Preparation of walls under liquid wallpaper
Liquid wallpaper is a novelty in the world of finishing materials, which in the shortest possible time managed to gain popularity worldwide. We will not list all the advantages of this material, and we will tell about how the preparation of walls under liquid wallpaper is done. Despite the simplicity of application and obvious advantages, such wallpapers are very "capricious" in the pose of surface selection - they can be applied only on the perfectly smooth wall.
Another important nuance - liquid wallpaper can pull out of the concrete wall dirty divorces and stains, so the surface must be treated with special compositions. To this not happen, use several layers of primer. So you will get a smooth smooth wall and 100% protection against unpleasant surprises in the form of dark spots. The same applies to the preparation of walls under the wallpaper for painting, only in this case it is desirable to cover the wall paint on a water basis.
Concrete, spacious and brick walls
Preparation of concrete walls under wallpaper has its own characteristics. Concrete, brick and spacure strongly absorb water, so if we apply liquid wallpaper, they will stretch all the moisture and spoil the material. For this reason, such walls must be pre-treated with a plaster mixture, which protects the adhesive composition of the wallpaper and allow them to be secluded to the wall. Gypsum will score all the pores, aligns small chips and depressions. It is perfectly processed by sandpaper and is very easy to use.
After drying gypsum, it is recommended to cover the wall with primer and white water paint so that the color of liquid wallpaper is more saturated. Primer, if necessary, can be replaced with a mixture of facade paint and PVA glue in proportion 2: 1. Lastly, the firming soil is superimposed to increase the clutch of wallpaper with a wall.
More information about the putty of brick walls in the article " Technology Plastering Brick Walls».
Walls made of plasterboard
The technology of preparation of walls under wallpaper in this case is very simple. Plasterboard does not need alignment (except to smell the joints with a gypsum mixture) and requires minimum of preparatory actions. To thoroughly hide joints and improve the quality of the coating, it is recommended to sharpen the entire surface. The consumption of putty should be minimal - just a couple of millimeters. When it dries, cover the wall with water-free light paint, mixed with PVA glue in proportion 3: 1. Thus, you strengthen the putty layer and create the perfect foundation for applying liquid wallpaper.
Useful advice: Avoid the use of black screws when fixing drywall - they can spoil the appearance of wallpaper and provoke the appearance of rust. Fueling fastener from galvanized steel to avoid trouble.
Tree, plywood, mdf, fiberboard
The price of wallpaper preparation for wallpaper also depends on the material from which the walls are made. So the treatment of wooden surfaces includes also protection against moisture and deformation. For this, no less than three layers of primer are applied and covered with water paint walls. Then they apply a gypsum putty and crossed the facade paint with PVA glue in the proportion of 3: 1
In this video, the preparation of walls under the wallpaper and proper breeding of liquid wallpaper:
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