Concrete contact primer: what it is, scope of application and application technology

A specialty product called concrete contact primer is used to improve coatings’ adherence to concrete surfaces. The rough, textured surface produced by this primer makes it easier for materials to adhere to the naturally smooth and non-porous concrete, such as paint, plaster, or tiles. Your finishes’ longevity and durability can be greatly increased by using concrete contact primer.

The concrete contact primer has a wide range of applications. It is frequently utilized in construction projects, both commercial and residential. This primer is a must for prepping concrete walls, floors, and ceilings, whether you’re remodeling a house or working on a major construction job. It comes in especially handy when you have to cover an old concrete surface with a fresh layer of material.

Although applying concrete contact primer is a simple procedure, it does call for some preparation and basic understanding. The concrete surface must first be thoroughly cleaned and clear of any debris, oil, or dust. To ensure an even coat, the primer is then applied with a brush, roller, or sprayer. The surface will be prepared for the subsequent layer of material once it has had time to dry, giving a solid bond that lowers the possibility of peeling or cracking.

To sum up, anybody working with concrete surfaces can benefit greatly from the use of concrete contact primer. Because of its capacity to increase adhesion, it’s a crucial step in a lot of building and remodeling projects, guaranteeing the stability and durability of your finishes. Gaining an understanding of its uses and advantages can help you produce better work.

What is concrete contact

Betonokontakt is a deep penetration primer mixture that is suitable for all applications and has a higher adhesion ability.

• Portland cement;
• fine-grained quartz sand with a grain diameter of 300 to 600 microns;
• acrylic dispersion;
• chemical modifiers.

Acryl dispersion sticks to surfaces with consistency. The strength and hardness of the primer layer that is applied are the result of Portland cement. The primed surface is roughened by quartz sand. The purpose of the primer mixture determines the size of the sand grains: larger grains are used as a primer beneath putty, while smaller grains are used for finishing.

The treated surface gains vapor permeability, resistance to chemicals and mechanical shock, hygroscopicity, frost resistance, and other properties thanks to modifiers.

An essential preparatory product for improving the adhesion between smooth, non-porous surfaces and subsequent layers of paint or plaster is concrete contact primer. It functions by producing a grippy, rough surface that makes materials stick better and forms a stronger, longer-lasting bond. This primer is particularly helpful when applying finishing coats to surfaces such as concrete, tiles, or old paint during renovations and new construction. The primer is applied simply by cleaning the surface, using a brush or roller to apply it evenly, and then waiting for it to completely dry before starting any additional work.

What is concrete contact for

Two varieties of concrete contact exist. While the second is thought to be universal and can be used for both indoor and outdoor work, the first is used for interior decoration. Betonokontakt works well for priming surfaces composed of any substance.

• concrete;
• brick;
• metal;
• glass;
• ceramic tiles;
• wood;
• plasterboard;
• painted surfaces, etc..

As an illustration, consider a glass tree, metal tiles, etc. Concrete contact treatment causes the base to become rough. After drying, the final layer that was applied to it adheres firmly and doesn’t crumble or break. This works with gypsum plaster as well as cement or lime-cement.

Concrete contact has an advantage over other primer combinations in that it can be used without the previous finishing coat having to be removed. Just enough primer is needed to transform the old finish into a gooey, rough mass that will adhere firmly to the fresh finishing layer.

Properties of concrete contact

For every variety, concrete contact has the same characteristics. The technical specifications for the primer mixture are governed by GOST 28196, which all manufacturers are required to follow.

The Betonokontakt primer emits no harmful fumes and has a strong odor, making it an environmentally friendly product. When working with it, personal protective equipment is not required.

Every kind of concrete contact has the ability to keep water out. Alkaline and other harsh effects cannot harm it. Because the surfaces treated with it have the ability to "breathe," mold and fungi cannot grow on them.

The manufacturers claim that concrete contact offers trustworthy material adhesion for 80 years following application, and the applied primer layer only starts to degrade beyond this time.

How to work with a primer: application features

How to prepare the surface

Betonokontakt should not be applied to surfaces that are dusty or greasy. To prevent short circuits, de-energize the electrical wiring before applying the mixture. After that, the base needs to be completely cleaned of all dust and debris and allowed to dry completely.

Bitumen streaks, greasy stains, and glue residue must all be removed from the surface during cleaning. Old finishing that is peeling off the base needs to be scraped off and cleaned.

Once the cleaned base has dried, betonokontakt needs to be applied. You might have to clean it again if you put off starting work because it might get dusty again. However, you shouldn’t rush the primer layer application because betonokontakt cannot be used on a cleaned surface if the humidity level is higher than 2.5%.

How to apply betonokontakt

The temperature should be kept between +5 and +35 °C when working with concrete contact, per the usage instructions. Haze in the air shouldn’t be more than 60%. Ready-to-use concrete contact is sold in sealed packaging.

For manual application, all that is needed to guarantee uniform distribution in the quartz sand composition is to open the packaging cover and thoroughly mix the contents. To prevent the sand grains in it from sinking to the bottom of the container, this process needs to be repeated on a regular basis when priming surfaces.

Use a foam roller or brush for application. You can use the spray gun to expedite work and use less material. In this instance, though, the mixture needs to be further diluted—50 ml of water should be added for every kilogram of concrete contact.

Concrete contact is applied in one layer, sometimes in two. Many manufacturers add a special pink or white dyeing pigment to it so that processed areas are easier to see.

Film concrete concrete consumption

The porosity of the surface being treated and the diameter of the sand grains that make up the surface determine how much concrete contact is consumed:

1. Consumption rate for painted surfaces, metal, glass, ceramic tiles and other fine-porous materials is about 150 g / m².
2. Processing concrete slabs, clinker bricks and other medium-porous surfaces with concrete contact will require a consumption of 300-350 g of primer per 1 m².
3. For concrete and brick surfaces with high porosity, the consumption per 1 m2 exceeds 500 g.

Experts advise using less expensive primers to pre-treat highly porous surfaces in order to minimize the need for pricey concrete contact.

The concrete contact layer that has been applied takes two to three hours to dry. Following this time frame, you can continue polishing the surfaces you treated with it.

A versatile and indispensable tool for anyone working with concrete surfaces is concrete contact primer. It guarantees a solid and long-lasting bond by improving the adherence of fresh layers to older ones. In construction and renovation projects where old concrete surfaces need to be updated or covered with new materials, this primer is especially helpful.

It’s easy to use concrete contact primer. To begin, give the surface a thorough cleaning to get rid of any grease, dust, or dirt. Using a brush, roller, or spray, evenly apply the primer, then let it dry as directed by the manufacturer. In order to get the best results and prolong the life of the concrete work, this step is essential.

All things considered, using concrete contact primer is a dependable way to save time and raise the caliber of your work. The results of your work can be greatly improved by comprehending and applying this primer, regardless of whether you are a professional builder or a do-it-yourself enthusiast. You can guarantee a smooth, long-lasting finish on all of your concrete surfaces by using the appropriate application techniques.

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