Before applying plaster or paint on concrete walls, floors and ceilings, a primer of a special composition must be used. Such products are intended to enhance the adhesive properties of porous materials. They include various kinds of fillers that roughen surfaces. One of the best coatings of this type is concrete contact. The primer of this variety can be produced by different manufacturers, but it usually costs not too much.
Product Description
A concrete contact primer is made based on modified acrylic copolymers. Coarse sand is used as a filler in it . It is he who gives the surfaces a uniform roughness. In addition, the concrete contact primer penetrates deep into the material, thereby strengthening its upper layers. Also, the use of this variety allows you to reduce the consumption of finishing finishing material.
The concrete contact itself is colorless. However, manufacturers add pink dye to it during the manufacturing process. This is done for the convenience of the consumer. The fact is that when applied to the surface of the color composition, untreated spots are very clearly visible.
Concrete contact, a deep penetration primer, usually in finished form , is on sale. That is, you do not need to knead it. A brush or roller is usually used to apply it to walls, floors and ceilings. Some manufacturers produce concrete contact, which can be treated with a spray gun. The main advantages of concrete contact primers, in addition to low cost and good adhesive properties, include absolute environmental cleanliness and the ability to "breathe".
Where applicable
Concrete, brick, block surfaces - concrete contact primer can be used on any of them. Its use is also permissible on GCR and any other smooth finely porous materials. Use this adhesive composition for plaster, both regular and decorative, wallpaper, tile and other materials. Sometimes this tool is also used on rough walls and ceilings. This is done if they have difficult to remove oil stains - from drying oil, dyes, etc. It is enough to treat these places with a concrete contact, and they will become rough, and therefore, the finish will hold on to them very tightly. In most cases, the tool of this variety can be used both for indoor and outdoor work.
Cost
Prospectors is the most popular concrete contact in our country. The primer of this variety has earned good consumer reviews mainly due to its high quality and quite affordable cost. The price per kilogram of such a product usually ranges from 80-100 rubles. Also quite popular on the market is Luxorit Beton-Kontakt, manufactured by KrasCo. There is a primer from this manufacturer about 65-70 rubles per kilogram. If desired, in specialized stores you can find a cheaper primer of this variety. An ordinary, non-branded product costs about 30-50 rubles / kg.
Primer concrete contact: characteristics
In most cases, funds of this type can be used at temperatures from +5 g and air humidity not more than 80%. Their consumption is 200-300 gr. per square meter depending on the porosity of the surface. The layer of the applied primer dries within an hour - three. You can finish walls and ceilings clean after at least 12 hours. It is also impossible to delay this procedure. Apply plaster or wallpaper for at least 24 hours after the walls have been primed. Otherwise, dust will have time to settle on the surface, which will reduce the adhesive properties.
The absence of any odor is also what concrete contact is valued for. The primer of this variety, even indoors, can be applied to walls and floors without the use of personal protective equipment.
How to apply
Wall treatment with concrete contact primer is carried out according to conventional technology. Manufacturers do not recommend diluting the product before use with water or any other solvents. Before use, the concrete contact must be mixed thoroughly. The fact is that the heavy components that make up this primer, such as sand and cement, settle to the bottom during prolonged storage. Periodically mix the primer should be and when performing the work on the processing of walls or floors. Of course, all surfaces should be thoroughly cleaned of dirt before use. Also, stuck plaster and paint should be removed from them. The product is usually applied in one coat.
Thus, a concrete contact primer , the consumption of which is not too large, can be used for preliminary surface finishing of walls, floors and ceilings in most cases. This tool is inexpensive, the effect of its use, including in terms of saving the finish, can be more than significant.