Priming the walls before wallpapering is necessary to improve adhesion, that is, good adhesion of the surface to the canvas. Otherwise, the wallpaper will soon fall behind the walls. A primer for walls for wallpaper is presented in specialized stores in a fairly wide range, so you should approach the choice of material responsibly, based on the characteristics of a particular room. For surface treatment before wallpapering, you can use both universal compositions and highly specialized products.
At present, the opinion is that prime the walls before wallpapering is optional, is erroneous. Real masters confidently assert that surface treatment with a special composition cleans and strengthens it, making it resistant to pollution. As a result, the surface pasted over with wallpaper looks better - smoother and more accurate, and the work itself is easier and simpler. Moreover, applying a primer is a simple job that even a beginner can handle with their own hands. So, why do you need to prime the walls before pasting?
- To clean the treated area from building dust;
- Blockage of small cracks and pores in the walls, which facilitates the work of pasting them with wallpaper with your own hands;
- Significant reduction in the consumption of the adhesive composition;
- The adhesion of the adhesive to the surface is improved;
- Some types of primers contain additives that help protect against moisture, preventing mold and mildew from developing;
- Plastered surfaces do not crumble after applying the primer;
- The walls under the primer "breathe", which provides an optimal indoor climate.
It is the treatment of the walls with a primer before each stage of repair work that ultimately guarantees their high quality. Priming is a simple process and does not require the call of professional craftsmen. Even an inexperienced person is able to apply a special composition to the walls with his own hands before gluing the wallpaper. Another question is which primer to choose for specific purposes?
How to choose a primer for walls under wallpaper?
A variety of types of soil compositions that are commercially available today allow you to choose the most optimal one, based on the specific type of surface and type of wallpaper. What primer options are available?
- Alkyd mixtures are used to treat wooden surfaces. They provide excellent adhesion of the wall to the wallpaper. After applying this type of mixture, it is necessary to withstand twelve hours until it is completely drying out.
- Glyptal primer is used for metal and wood. Its drying time is twenty-four hours.
- Acrylic primer, most often white, is considered a universal tool for treating surfaces from a wide variety of materials. However, it cannot be used for metal walls. Such mixtures dry quickly - up to five hours and are completely odorless. After application, you can glue any kind of wallpaper.
The primer under the wallpaper can be both liquid and dry. Liquid mixtures are a ready-made version of the cultivating soil, but they are far from always better than dry ones. The latter must be diluted with water before use. This method, used before wallpapering, will save money, since dry mixes have a lower cost compared to ready-to-use ones.
When buying a primer, one should take into account such an important indicator as material consumption. Here, the initial state of the surface and its total area are taken into account, because in some cases, before wallpapering, the walls will have to be treated more than once.
You can apply a primer brush or foam, velor roller, carefully painting over all areas. Particular attention should be paid to the walls, where additional work was carried out to strengthen them. They, as a rule, are painted over separately, and only then all surfaces of the finished room are treated. Before proceeding with wallpapering, it is necessary to allow time for the composition to dry, as stated in the instructions. Most often, soil mixtures are produced in white.
How to prepare the walls for applying a primer?
Only after careful preparation of the surfaces, you can proceed to the final stage of their repair - priming and wallpapering. For this you need:
- Completely remove existing old coating - paint, lime or wallpaper.
- Remove all protruding nails, screws, protrusions, etc.
- If necessary, you need to putty separate areas, perform plastering by calling the master or doing the work yourself.
Advice
- With your own hands, walls for wallpapering can be treated with diluted PVA glue. This will significantly save money on the purchase of expensive funds.
- Before pasting plastered surfaces, it is better to apply a deep penetration primer on them. You can also find highly specialized compositions for chalky coatings on sale.
- Before priming walls with fungus or mold, they are treated by special meanspreventing the development of pathogenic microorganisms. These products disinfect and provide further surface protection.
- A drill using a nozzle - a mixer will help to make a high-quality mixture with your own hands when diluting a dry powder with water. Thorough mixing will eliminate lumps and make the primer homogeneous.
- Allow the first coat to dry completely before applying the second primer coat. The time for this is selected depending on the type of primer, which can be read in the instructions. Wallpaper can be glued only after the second layer has completely dried.
Thus, choosing a primer and treating surfaces with it with your own hands will not be difficult even for an inexperienced person in the repair business. It will become much easier to glue wallpaper, and the quality of finishing work will remain at the highest level, no matter what composition is chosen.
