Primer for exterior: recommendations on the choice and work with the material

The quality of the exterior finishing work is very important. Beautiful decoration makes the house elegant, neat and fresh. The paint, which is suitable in style and texture, gives the facade a first-class status and shine of novelty, creates a single ensemble with the surrounding landscape.

Such an impressive view of the wall should be preserved for many years. But how to do it right, because the structure of concrete is such that over time it becomes painted out and there is a detachment of the paint coating. Builders successfully solve this problem with primers for exterior work.

Under the influence of precipitation, temperature changes and other external factors in the structure of concrete destructive changes occur. The porous layer absorbs moisture, and expands when heated.These loads lead to cracking, peeling and crumbling of concrete. Under such operating conditions, the material needs a protective coating. Primers for facade work, applied to a porous concrete or stone foundation, perform the following functions:

• impregnating composition penetrates into all pores and microcracks, fills and seals them in the drying process, forming a single monolithic structure with the base, thereby strengthening the top layer, increasing frost resistance and increasing the service life of the walls;
• a film is formed on the surface, which prevents moisture absorption, but allows the house to breathe;
• filling the pores of the base can significantly reduce the consumption of finishing paint;
• white primer smoothes dark spots and areas of different shades, then the paintwork will fall smoothly and beautifully;

• the primer layer improves the adhesion of the base surface and paint, so the walls will have a fresh and neat appearance longer;
• as part of primers there are flame retardants, antiseptic additives that prevent the formation of mold spots and fungi;
• metal base compounds contain rust inhibitors;
• absolute environmental safety;
• reasonable price allows you to carry out protective work, even with the most budget repairs.

Any soil for outdoor work has all the necessary properties for long-term outdoor use. It is frost-resistant, weather-resistant, durable, vapor-permeable, hydrophobic.

The front primer for sale in canisters or plastic buckets of various sizes. In its composition there is a base in the form of a binder and various useful additives that give the solution the necessary properties. The shelf life of the mixture is 12 months.

When choosing a primer composition should take into account the compatibility of the applied material and the base. Manufacturers often produce paint and primer in the kit, together they work even better. Special compositions are made for different bases. For concrete and wood need to choose different mixtures. They differ in the type of binder.

• Acrylic primer with antiseptic additives in the composition is used for deep impregnation of concrete, creates a colorless matte coating, hardened and protected. At the same time vapor permeability of walls does not decrease and the color rendition of a paint and varnish covering improves.Acrylic impregnation diluted with water. Acrylic polymers consist of deep penetration primer for wooden, plasterboard, brick or mineral and foam concrete bases. This compound is not suitable for metal and smooth surfaces with low absorbency.
• Concrete Contact also refers to acrylic blends and contains sand, cement, and adhesion promoters. The coating as a result of application becomes rough and perfectly meshes with the finishing finish. Concrete contact is used for weakly absorbing surfaces. Normal temperature for operation is in the range of +5 to +30 degrees.

• Alkyd Primer made on the basis of synthetic polymers, as well as anti-corrosion and antiseptic additives. The properties of the composition allow it to be used for the treatment of wooden and metal bases. They can be primed not only for metal, but also for rust. This solution dries very quickly.
• Polyurethane primer It is very popular due to its versatility and ease of application. This two-component solution has a fairly high cost, but forms a durable coating with excellent adhesion and dries quickly.
• Latex penetrating primer suitable for work on concrete and plaster. Latex freezes with a film on the treated surface and reduces paint consumption, and also prevents the development of harmful microflora.

Consumption priming composition depends on the material, the degree of porosity of the base, indicators of absorption. A smoother and less absorbent surface will require less soil, and a porous one will absorb more.

On each package, the consumption rates for different materials are written in detail, but in more difficult conditions of real construction, consumption is always greater. On irregularities and difficult places it is better to go through the composition twice.

Acrylic universal primer for indoor and outdoor use, which is suitable for all types of mineral bases, has a consumption rate of 1 kg per 7-10 square meters. m when applied in a single layer. If you need to cover a wall of 50 m², the consumption rate is 5 kg, add 10%, we get 5.5 kg. This composition is sold packaged in plastic buckets of 5 and 10 kg, which means you need to buy 2 buckets of 5 kg.

The rapid development of the market of building technologies and materials allows customers to choose from a huge range of finishing products and compositions for pre-treatment of bases. Russian manufacturers successfully compete with well-known global brands.

A huge company with a world name MC-Bauchemi It has been operating since 1960, it has more than 40 factories around the world and is considered the recognized world leader in the field of protection of concrete surfaces and exterior building materials. It is represented in Russia by the brand. Plitonit. To improve the quality of its products, the company develops innovations and ready-made technical solutions for facade works.

Excellent adherence is received, for example, by an adhesive primer for the preparation of smooth and weakly absorbing bases - Plitonit primer "ConcreteContact". Its consumption is 250 g per m². It is easy to work with him: mix and apply, the drying time is 3 hours. Plitonit products are constantly being improved and renowned for their excellent performance.

Mark Cerecit known to every builder.In the assortment of the manufacturer there are mixtures with any necessary properties and for any materials. Cerecit complex solutions are very effective, for example, facade plaster and repair putty are ideally compatible with universal facade primer and antifungal agent. Glue-bonding mixtures and weather-resistant paints for outdoor use are also available. Such combined systems give an excellent and long-lasting result, for which buyers prefer Cerecit.

Company Dekart It has been producing construction chemicals since 1992, and during this time it has accumulated enormous scientific and practical potential, installed the most advanced equipment, uses only the highest quality European raw materials and conducts effective quality control. The products of this company is famous for its reliability and compatibility with other brands. For the convenience of customers created a unique online trading system.

In the range of manufactured their own brands can be noted materials "Expert". These are well-known finishing materials to Russians with an improved formula and from first-class raw materials. Due to the optimization of technological processes, Expert products are available for most budget repairs.

It is not difficult to finish the surface before finishing and it is quite possible to do it yourself. To work with a primer, you will need a roller, spray gun or brush, a wall cleaning brush, and a drill with a mixer nozzle for mixing. Wear gloves to protect your hands.

Before applying the primer must be thoroughly mixed and the base prepared. The wall must be cleaned of dirt, flaking pieces, dust, stains of other colors. For this perfect pressure water stream. Then the wall should dry.

Bucket with the composition to open. If according to the instructions required, dilute with water in the desired proportion, mix. It is possible to apply the primer in several ways: with a wide soft long-haired brush, roller or spray.

Carefully miss the mark of difficult places and the slightest irregularities. It is important to prevent the occurrence of drips and drops.

The drying time of the primer varies from 30 minutes to several hours, after which you can begin work on applying a finishing paintwork.During work, avoid contact with dust on the treated surface.

For metal painting, the base is also cleaned of old paint, oil, dirt and dust. A metal brush is used to remove rust, then a primer is applied, specifically designed to work on metal and protects against corrosion. You can cover the ground and rusty metal, then you need to take the composition with a rust converter. The wooden surfaces are primed using a similar technology, the composition should contain water repellents.

Learn more about how to choose a primer for outdoor work, you will learn from the following video.