Characteristics and application of Ceresit CT-17 primer

The need to use a primer

Using the above mixture, you can significantly compact foundations that are crumbling. And after the primer dries, their strength will be increased, but at the same time air circulation will remain. This is especially important when laying waterproofing and vapor barriers indoors. The mentioned brand of primer composition is available in two varieties:

• summer;
• winter

If you still don’t know whether this composition is worth purchasing, it is recommended that you take a closer look at the reviews about it. From them you can find out whether the technical characteristics correspond to the declared ones. This will be discussed below.

Reviews on the technical characteristics of the Ceresit CT 17 brand primer

Having become more familiar with the soil described above, you will be able to understand that it is a yellowish solution created on a water basis. The mixture is transparent and has the appearance of an emulsion. The composition includes synthetic resins and drying oil, as well as alkyd resins. Consumers like that the primer has no pigment that could mix with the paint coat.

This primer can be stored for a year, so consumers are not advised to purchase it for future use. At the buyer's choice, the manufacturer provides packaging according to:

• 2 l;
• 5 l;
• 10 l.

In order to determine the required amount of composition, you need to pay attention to the standards that will be given below. Ceresit CT 17 should not freeze, so it should be stored in heated rooms. Otherwise, according to consumers, the mixture may lose its properties. The primer does not bubble when applied, which is especially true when leveling mixtures need to be applied to the surface.

The composition, according to users, is able to withstand high temperatures, so it can be used in conjunction with a “warm floor” system. This reduces the likelihood of cracks in the coating. Ceresit CT 17, according to consumers, is environmentally friendly, the mixture is not toxic. It can be used as a substance that binds dust during the treatment of cement walls, stone surfaces and cement floors. The primer has excellent penetrating ability and therefore has an excellent degree of adhesion.

Primer properties

The priming agent “Ceresit ST 17” is very popular among builders. It is considered universal and is used for different types of work. The characteristics of the material are such that it is deeply absorbed into the surfaces being treated, strengthens them and binds particles of dust and contaminants. The base on which the soil has been applied will subsequently absorb less moisture, but the ability to pass air does not decrease.

Other material properties:

• improves the service life of adhesives for tiles and wallpaper;
• can reduce paint consumption by 1 sq. m;
• helps to apply the plaster in a thin, smooth layer, while the latter does not crack from drying out.

The primer contains components that add shine, which is not the case with all similar products. This helps ensure the finished surface has a 'shine' and is easily visible even when completely dry. The composition also contains alkyd, ebonite resins, drying oil, water-dispersed polymers and a number of other components. The use of primer, according to the instructions, is permissible indoors and outdoors.

The product has all the necessary certificates of conformity and is environmentally safe. For use in cold weather, it is better to buy primer with the “Winter” brand. Both types of Ceresit ST 17 primer are available as a concentrate in packages of 2, 5, 10 liters, the price for 1 liter is about 80 rubles, for 10 liters - 480 rubles.

Feedback on features of use

Ceresit CT 17 should be applied after thorough initial surface preparation. As home craftsmen recommend, it is necessary to remove debris and dust from the foundations. Unevenness and cracks should be covered with appropriate means. The primer can strengthen the surface, but if there are chips and areas that are prone to collapse, they must be removed. Application of primer, as consumers advise, should be done using the following tools:

• brushes;
• brushes;
• rollers.

The start of work should be accompanied by testing the surface for absorption ability. If it is high enough, then the coating should be applied in 2 layers. The first stage involves a passage using an aqueous emulsion solution. Drying will take 4 to 6 hours, then the next stage is carried out. The fixing layer is applied undiluted.

The above-mentioned drying period, according to consumers, is relevant if the humidity and temperature in the room are normal. The Ceresit CT 17 primer must be washed off the tools after work. For this you need to use water. Otherwise, the working surfaces of the tools will become unusable, and their reuse will be impossible. PPE will be additional precautions. You need to protect exposed skin with gloves, a respirator and protective clothing.

Surface preparation

Treating the surface of the walls with Ceresit ST 17 primer will help strengthen them. If the old coating does not hold up well, it must be removed. The walls are all tapped, thus revealing loose areas of plaster, which are removed. The resulting pits and large cracks are filled with putty. During the preparation process, you need to pay attention to the following actions:

• remove visible traces of cement, plaster and other painting materials;
• clean all types of coatings, with the exception of water-based and acrylic-based paints;
• dry the walls well - at least 2 weeks after covering with plaster, at least a day after puttying;
• prevent contamination of untreated areas using paper adhesive tape;
• remove significant areas of mold, oil stains, etc.

Attention! Before using the Ceresit primer, just shake well. If necessary, the “winter” solution is defrosted in a warm room.

Feedback on consumption

The Ceresit CT 17 primer, according to consumers, can be used in different volumes, which depend on the absorbency of the wall. Typically, according to consumers, about 200 ml of the composition is needed per 1 m2. If work is carried out to reduce water absorption, then the flow rate should be increased. This, according to buyers, allows you to fill the channels and pores inside the concrete.

Feedback on area of ​​use

The above-described water-dispersion mixture has deep penetration properties. It significantly reduces the absorbent properties of the surface and does not help reduce the vapor permeability of the base. Due to the fact that the composition is painted yellow, the master can easily distinguish a surface that has already been primed from one that has not yet been treated.

The mixture can be used for interior and exterior work. Ceresit CT 17, the consumption of which was mentioned above, is used to treat substrates before applying floor and plaster mixtures, as well as tile adhesives. The primer can be used to treat substrates that have high absorbency, among them the following should also be highlighted:

• cement-sand plaster;
• lime plaster;
• gypsum plaster;
• screed;
• lightweight and cellular concrete;
• brickwork;
• anhydrite screed;
• natural stone;
• fibreboards and particle boards.

The composition, according to consumers, has excellent penetrating ability, it prevents drying out of thin-layer leveling mixtures, increases the spreadability of floor coverings and helps improve the adhesion characteristics of materials to the base.

Protective functions of the primer

Construction work on surface cladding is almost always recommended to be done using primers. The aqueous dispersion base of such materials gives the coating protective properties:

1. Preventing the destruction of the foundation, strengthening it. The base will not be subject to deformation if this brand of soil is used.
2. Providing strength to joints of different materials, improving their adhesion. When using primer, no rejection of materials is observed - they will not peel off.
3. Protection against mold and fungi. The product allows you not only to strengthen the walls, but also to prevent them from being damaged by the activity of various microorganisms. The primer provides powerful antiseptic and fungicidal protection.
4. Reduces the possibility of contamination and dust deposition. The shine of the surface after applying the solution literally repels dust and dirt.

Additional feedback on technical characteristics

The water-dispersed primer Ceresit CT 17 has a density of 1 kg/dm3. Application temperature varies from +5 to +35 °C. For a single application, consumption can vary from 0.1 to 0.2 l/m2. The final value will depend on the absorbency of the base. According to users, drying time can take as little as 3 hours. After the surface is dry, consumers are advised to check it for absorbency and repeat the application if necessary.

Before starting work, consumers are advised to protect windows and doors with plastic film; only then can you begin applying the mixture. The primer is supplied ready-made; before starting manipulations, buyers advise only to stir it thoroughly. A roller or brush with long bristles should be used for the work; this will ensure a uniform layer. Most often, these tools are used in tandem.

Applying primer

The product is applied with a roller or a wide brush or brush. In narrow places, use a small brush. If necessary, compressor application is acceptable. Application tips are:

• prevent the appearance of drips and puddles;
• do not exceed consumption rates;
• after finishing work, wait 4-6 hours, on porous surfaces - a day for complete drying;
• Wash the tools thoroughly with water after finishing work.

To check the quality of the coating, a spot of glue is dripped onto the primed wall. If it dries unevenly and is absorbed quickly, another coat of primer is required. In any case, porous materials are primed 2-3 times, and for the first layer, Ceresit ST 17 is diluted in half with water.

Consumption rates

Recommended consumption rates per 1 sq. m – 0.1-0.2 liters. Typically, about 150 ml is spent per meter of area; with a porous and old surface, a little more than 200 ml may be needed.

Why choose Ceresit primer?

Ceresit CT 17 deep penetration primer is designed for highly absorbent substrates. After the primer layer has dried, you can begin applying the final decorative coating. The composition is excellent for interior finishing work. This preparation allows for better coverage if you plan to use paint for decorative work. Its consumption will be reduced, which will save money. The primer can be used to finish walls and floors. The adhesion of the finishing coating will be increased.