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August 12, 2017 18:06

Primer for walls under the wallpaper

To effectively wallpaper looked securely kept on the wall, two conditions are necessary - the maximum smoothness of the surface and its high adhesion with the finishing material.So, before you take on a sticker wallpaper, it is necessary to carry out preparatory work, which usually consists of five stages: choice of material, cleaning the walls of the old coating, surface treatment with special antiseptic compounds, and then conduct the repair of the detected defects, bringing to perfect smoothness putty and ground handling.

Primer for walls under the wallpaper

Primer for walls under the wallpaper

Primer for walls under the wallpaper is based on different materials.Therefore, in order not to be mistaken with the choice of composition, you need to pre-acquainted with their characteristics.

What is priming?

Article Contents

  • 1 What is priming?
  • 2 For what primer is needed?
  • 3 main types of primers
  • 4 How different species primer work?
    • 4.1 Acrylic Primer
    • 4.2 Latex Primer
    • 4.3 alkyd primer
    • 4.4 universal primer
    • 4.5 Priming wallpaper paste
  • 5 How to properly prepare the walls for wallpaper
    • 5.1 Removing old wallpaper
    • 5.2 first layer
    • primer 5.3 putting in order the surface of the walls
    • 5.4 priming prepared surfaces before pasting wallpaper
    • 5.5 Video: tips on proper selection and application of primerunder the wallpaper

primer or, as is sometimes referred to as the composition - a primer, in fact, is an auxiliary material, but that it provides a successful finishing work, including wallpapering.

Most often, primers are sold ready to use liquid form

Most often, primers are sold in ready to use liquid form

composition is a homogeneous liquid or slurry was odorless.It can be transparent or have a particular shade (most often - milk) produced in the finished or requiring dilution with water, concentrated form.After soaking and drying the composition forms a transparent film on the surface.The primer composition may include organic resins and adhesives, film-forming components manufactured on different bases - silicate, acrylic, silicone, latex, and other copolymers.In addition, the solution is usually complemented by a variety of additives and excipients that enhance the efficiency of material and easier to work with him.Found in sales and a primer in the form of a dry powder.

Usually a primer is packed in plastic buckets or bottles.The packaging manufacturer is required to post information about the following parameters:

  • proportions and method of breeding stock;
  • solution flow rate per 1 sq.m .;
  • method of applying the material on the surface;
  • terms of drying the applied solution;
  • warranty expiration date;
  • production date.
Basic information about the composition and characteristics of its application shall be made on the packaging label

Basic information about the composition and characteristics of its application shall be made on the packaging label

primer should have the following properties:

  • Large depth of penetration into the surface.
  • The ability to increase the adhesion of materials.
  • The properties of strengthening the surface structure of the material.
  • antiseptic qualities - the ability to make the surface resistance to the emergence and development of various forms of microflora - mold, mildew, etc.
  • a fairly short period of complete absorption and drying.

When selecting a primer is necessary to consider the conditions of application, affecting the processing efficiency:

  • treated surface material - plaster, plasterboard, wood, brick or concrete, etc.
  • room humidity, wherein the primer is applied;
  • view of a decorative finish, under which the processing is performed wall surface primer - liquid or ordinary wallpaper;
  • Density wallpaper selected for stickers.

For what primer is needed?

Due to its specific properties primer solution is able to cause the surface of the walls in order to create a solid foundation for the application of adhesive:

  • Deep penetration primer in the structural composition of the wall material facilitates filling of micropores and cracks, holds the remains of dust, thereby reinforcing the surface.
  • Antiseptic additives disinfected wall material and make it resistant to the biologically aggressive environment.
На такие стены обои наклеивать нельзя! Поверхность нужно "пролечить" и предохранить от дальнейшего развития микрофлоры антисептической грунтовкой

At such wall wallpaper paste can not be!The surface of the need to "treat" and prevent the further development of microflora antiseptic primer

  • Primer provides excellent adhesion of wallpaper paste to the wall and finishing materials, preventing peeling wallpaper webs in the corners and joints.
  • formed on the surface of the film does not actively absorbed in her wallpaper adhesive, which significantly reduces its consumption.
  • Primer significant levels tone walls, which is very important when gluing light wallpaper.
  • solution is able to disguise small flaws on the surface and make it smooth, which simplifies and accelerates the wallpapering paintings.
  • After the primer coating surface remains "breathable", ie able to pass my own - it is extremely important to create a favorable microclimate in the apartment.

The main types of primers

All existing primer can be divided into three categories - solubility, the material on which they are made, as well as intended.Style

solubility separated primer:

  • primers based on organic solvents manufactured alkyd resins (Phenol), polyurethane and latex.
  • Water-soluble primer of deep penetration.These include acrylic, latex, silicone and silicate compounds.
  • Mineral materials produced based on lime, gypsum and cement.

primer type Purpose material for application to surface drying time (h)
Alkyd metal, concrete, reinforced concrete and wooden surfaces 10 ÷ 14
Acrylic Plaster, wood, particleboard, fiberboard, brick. 2 ÷ 4
Polyurethane absorbent and non-absorbent, including very dusty 24
Silicon concrete, plaster, lime-sand 4 ÷ 5
Latex plaster, plaster, brick, wood, concrete or concrete and other porous surfaces. 1 ÷ 2
Silicate lime, concrete, mineral and others. Do not apply on gypsum-containing base. 24
Mineral Plaster, concrete, brick. 24

quality training walls will be provided, if all materials are made by the same manufacturer for it.They are having a good compatibility, will give a good outcome together.

Classification by purpose primer mixtures:

  • universal water-based;
  • specialty - anti-corrosion and anti-bacterial;
  • deep penetration - up to 10 ÷ 15 mm;
  • antifungal;
  • isolation;
  • betonokontakt.

To cover the walls under the wallpaper pasting them most often used the following primers, sold as a finished product or requiring dilution as:

  • universal;
  • latex;
  • acrylic;
  • alkyd;
  • wallpaper glues.

Choice primer composition consistency

primer can also be divided into a covering or depth, that is, its properties remain on the surface of the wall, creating a film and leveling defects, or to penetrate deep into the structure and strengthen it.So you should understand that what is better for consistency to choose primer - this property will directly depend on how it will work.

primers produced in a liquid and transparent thick white solution.Each has a specific purpose, their advantages and disadvantages.

  • deep penetration Liquid solutions are designed to strengthen the outer layer of the walls and dust binding.Some of these primers are composed of special substances that can extinguish the alkali.
Liquid formulations typically penetrate deeply into the surface

Liquid formulations typically penetrate deep into the surface

The positive qualities of liquid primers include their affordable price and the ability to penetrate into the structure of the walls is 25% deeper than it can make the thick.

negative qualities such solution is its transparency, the possible heterogeneity of the application, as applied without overlapping layers difficult.The resulting surface will have a matte and glossy areas, which means that they will be slightly different adhesive power.

  • thick coats with white color, are intended not only to strengthen the surface of the wall and tie the dust - they are able to close the small flaws in the walls, creating a smooth surface.Some of these primers also incorporate antiseptic and extinguishing alkali additives.
Thicker coats create on the surface of a thin film coating

Thicker primer creates on the surface of a thin film coating

Positive properties of thick primer can be called their ability to fill the micropores of the surface with the formation of a white substrate for a decorative finish.In addition, the composition can align the heterogeneity of the porous surface, bringing it to perfect smoothness.

Negative moments in applying thick coats can be attributed only to its significantly lower penetration compared to liquid.

From the above it can be concluded that, whatever the composition of the primer or bought, it is better to choose a dense option, since it creates ideal conditions for wallpapering paintings.

Skilled craftsmen often use both options - the first layer of primer is applied to the liquid deep penetration, and the second - a thick, which leads up to the ideal surface.

How do the different types of primer?

To make the right choice, you need to know how to operate different types of primers when applied to the surface of the walls.

Acrylic Primer

This type of soil is made using polymeric binders of styrene-arilatnoy dispersion.Acrylic Primer is well suited for the preparation of internal surfaces for painting and decorating.The material does not give sharp unpleasant odor, dries quickly and is suitable for application to any type of wallpaper.

Acrylic primer

Acrylic Primer

Thus such a primer helps relief works and gives the walls required for further finishing quality:

  • Reduced hygroscopic surface.
  • prevent new cracks.
  • increases the life of the decorative coating.
  • film formed by the ground, capable of protecting the surface against mechanical damage (this is especially important for gypsum board), as well as to make it resistant to temperature changes.
  • significantly reduced consumption of adhesive.

concentrated composition is very easy and is diluted with water without loss of its properties.

acrylic primer, depending on their physical properties can be divided into five types:

  • With effect deep penetration into the walls of the structure - it is usually applied to the "weak" and porous surfaces.
  • Bonding, reinforcing the decorative material adhesion to the substrate.
Acrylic primer is able to strengthen the well wall surface

Acrylic primer is able to strengthen the well wall surface

  • Universal composition used for any type of surface and gives it a high water resistance.It is used for interior work.
  • Impregnating primer that can align the loose surface or smooth on their small flaws.
  • special solution designed for a specific type of material.

acrylic primer is typically applied in one ÷ two layers, depending on the surface condition by using a paint roller.Hard to reach places such as corners and the area around the radiators are processed with a soft brush with synthetic bristles.

surface drying occurs within two ÷ four hours after application of the composition, and then you can move on to the walls of wallpaper pasting.

The advantage of this type of soil can be called its versatility, since it is suitable for processing all the quality of surfaces, even dilapidated.

If you plan to glue wallpaper to the wall, lined with plasterboard, the primer is applied twice - before covering her putty puttied and already on the surface.This method of pre-treatment with the walls will not allow future removal of wallpaper, when the time comes to replace them, remove them with a cardboard layer of plasterboard, thus preserving the surface intact.

from the wall, treated acrylic primer, old wallpaper easily go away after treatment with warm water or a special tool, without damaging the layer of putty.

consumption acrylic primer may vary - it depends on the component composition, construction material of walls, surface finish, porosity, etc.The average flow rate of 150 to 250 grams per square meter.

Latex Primer

Latex - a natural ingredient derived from the sap of the rubber tree.He has the necessary qualities for finishing materials as water resistance, flexibility, strength, good opposition to tension and compression.

natural material - is quite expensive, and today in the building materials used synthetic substance that has the properties of natural rubber latex.It is also used in the manufacture of latex primer.This type of primer is usually an opaque liquid substance which upon drying on the surface creates a thin film of the wall, the wall provides good adhesion with decorative materials.

Latex primer

Latex Primer

latex primer evenly rests on the surface and dries quickly, but has a low adhesive capacity as compared with acrylic material.The primer is used to strengthen the loose and crumbling of walls - drywall or old plaster, and helps improve their waterproof qualities.

Latex primer - a great solution for loose surfaces

latex primer - a great solution for loose surfaces

latex primer fits well on wood and wood-fiber plates, all kinds of concrete and natural stone and is perfect for wet areas as it creates the conditions for confrontation damp surfaces.

Consumption of this material is on average 350 ÷ 500 grams per square meter.

alkyd primer

alkyd type primer has the properties of the paint to form on the surfaces of various types of film.Such a composition perfectly rests on wooden and concrete surfaces, filling the upper layer structure of the material pores.This prevents the wood swelling and moisture penetration into the concrete wall.

Alkyd primers make surfaces water-resistant and resistant to mildew or fungus colonies.Often, this kind of material is used as the base for the second layer of latex or acrylic primer or paint on acrylic base.

Alkyd compositions do not have the qualities of deep penetration into the material of the walls, but perfectly prepare the surface for further processing.