If you decide to stick wallpaper indoors in an apartment or house, then you must first prime the walls, which is required to level them, as well as improve the quality of adhesion of materials. First you need to figure out which primer is best suited for these works.
Need to use a primer
White wallpaper primer is applied to isolate dust particles and reduce the absorbency of walls. Among other things, the wallpaper will be easier to stick, the adhesion and strength of the material will be increased. The base will acquire the qualities of wear resistance and water resistance, and the base will be protected. If you pre-primed the walls, they will acquire antibacterial qualities. Indeed, among the ingredients of the primer composition there are additives that prevent the occurrence and reproduction of harmful fungi and bacteria.
Expert advice
If you notice that mold has appeared on the walls, then they should definitely be treated with an antibacterial primer. It does not matter whether you plan to stick wallpaper orpaint the walls.
Primer varieties
If you need a white primer for wallpaper, then you should familiarize yourself with the range of similar products. The composition may be dry or liquid. In the first case, water will need to be added to the ingredients of the mixture, using the manufacturer's instructions. If you are not afraid to overpay, then you can purchase a liquid primer, the price of which differs from the above. After purchase, the mixture is completely ready for use, this composition is homogeneous, and among its ingredients there may be universal fillers. On sale you can find an acrylic primer, which contains acrylic polymers and is versatile. Can be used as a rough coat:
- drywall;
- concrete;
- asbestos cement;
- wood;
- paint;
- plaster.
Acrylic primer can be applied with a roller or brush. If you will use an acrylic white primer for wallpaper, then it can be diluted with water, however, the liquid should not exceed 10% of the total volume. Such a need may arise when the composition thickens. After application, acrylic primer will dry for 2 hours, it is almost odorless, which is excellent for small areas. If you still have not decided which primer to choose for wallpaper, then this option will be very good, but it does not protect metal elements from corrosion. If such a need exists, then it is bestprefer alkyd composition for metal. Among other things, acrylic primer can be used as a self-protective coating.
Application of alkyd primer
Alkyd white wallpaper primer can be applied on surfaces with metallic elements. Such a composition converts rust on the surface and protects the substrate from further distribution of corrosion. Alkyd compound can be applied to the surface from:
- wood;
- Fibreboard;
- chipboard;
- glass.
If we are talking about a wooden surface, then the alkyd primer will be able to protect the wall from the appearance of mold and putrefactive formations. Under the wallpaper, you need to choose an alkyd primer based on chromates. After application, you will need to leave the surface for approximately 10-15 hours.
Glyphthalic, phenolic or waterproof primer
Considering the types of primers, you may prefer glyptal, which is applied to surfaces made of different metals. After application, the product dries quickly within a day, and it can be used to process walls in dry rooms. Phenolic primer is used as an anti-corrosion coating, which is durable. Application can be carried out on metal or wood surfaces. Drying time is 12 hours. Sometimes there is a need for a waterproofing primer, such a composition is indispensable for surfaces in saunas, bathrooms or other rooms, the conditions of which are characterized by high humidity.
Special and universal primers
For sale today there are different types of primers, among them you can find special ones that differ in their ability to absorb deeper. This mixture is suitable for a porous and loose base, which can be well strengthened with a special composition. For non-woven wallpaper, a universal primer is suitable, which can be applied to the base surface of small or medium porosity. This composition masks spots on the surface and evens out the colors of the wall. Application of this primer can be carried out on different types of bases, among them: plasterboard surfaces and walls primed at the preparatory stage.
Choose a primer for liquid wallpaper
The primer for liquid wallpaper should be chosen carefully by you. For example, using an acrylic mixture, you can increase the moisture resistance of the surface and improve its appearance. A deep penetration primer is also suitable, which is in the pores and holds them together by impregnation. After application, the walls gain strength, and also begin to consume a small amount of water. You can purchase a primer "Betonkontakt", which differs in that it is intended for working with dense areas. After applying the layer, a rough surface can be obtained, which will have the qualities of high adhesion with wallpaper. The primer for liquid wallpaper is applied using the same method as the composition used as a preparation beforesticking ordinary wallpaper.
Characteristics and consumption of Knauf primer
If you like Knauf brand products, then you can pick up the Tiefengrund primer, which is distinguished by its ability to penetrate deeply and strengthen the surface. This composition is intended to strengthen the walls and reduce their absorbency. At the next stage, putties, paints, tiles or wallpaper can be glued. Due to its high penetrating power, the mixture is well suited even for finely porous materials. Primer "Knauf" can be used for both outdoor and indoor use. For a 10-liter bucket you will have to pay 590 rubles. The working temperature varies from +5 to +30 ° C, and among the ingredients of the material contains cement, as well as gypsum plaster. Approximately 0.07-0.1 kg of composition will be required per square meter of surface. 3 hours after application, the primer will dry completely. Among the advantages of the mixture, it is worth highlighting the possibility of using it for very hygroscopic bases, this should include Knauf sheets. In addition, the Knauf primer is completely safe for human he alth.
Design Features
It is necessary to use a primer according to the technology, which involves the use of a roller or a wide brush. The white primer should be applied in such a way that no unpainted areas remain on the wall. After the composition dries, you can start wallpapering.
When working, it is recommended to use soft rollers withlong handles, as well as tables and chairs for supporting a person. A ladder is best for this. Applying a primer to the walls with it will be much easier.
