Mix waterproofing Ceresit CR 65: technical specifications

Small construction sites and large retail chains offer the consumer a huge selection of mixtures for various purposes. The leading position in popularity is occupied by the products of the famous German concern Henkel, which is produced under the Ceresit brand. On the shelves of construction stores you can see various adhesives of this brand, leveling mixtures, primers, grouts for ceramic tiles and many other products.

We will focus on the waterproofing composition produced by this manufacturer under the label Ceresit CR-65. In this article we will find out what characteristics this product is endowed with, what properties are inherent in it, how to use it correctly, where the mixture (waterproofing) CR-65 can be used.

Application area

Judging by customer reviews, the Ceresit mixture is designed for waterproofing work on non-deformable concrete substrates. The composition can be applied to any surface (ceiling, walls, floor) in order to create a waterproof coating. At the same time, it can be used both indoors and outdoors. The main task of such insulation is to prevent the occurrence of dampness and moisture penetration into buildings. Customer reviews say that the waterproofing mixture Ceresit CR-65 is most often used:

1. For waterproofing concrete and brick surfaces.
2. Application of a protective layer inside and outside the basement and underground rooms.
3. Creation of waterproofing in rooms with a high level of humidity: kitchens, toilets, industrial premises.
4. For waterproofing monolithic pools, bathtubs, water storage tanks.
5. As a protective layer to prevent the destruction of underground tunnels and hydraulic structures from water and frost.
6. To protect the foundation of buildings.

Basic properties

The dry mix (waterproofing) consists of Portland cement, a polymer with mineral additives and various modifiers. The product is sold in the form of a dry composition, packed in 25 kg bags. Judging by consumer reviews, in the hardened state, the coating has the following properties:

• excellent vapor permeability;
• resistance to low temperatures;
• environmental friendliness;
• water resistant
• strength;
• lack of shrinkage;
• hydrophobicity;
• resistant to salt and alkaline effects.

The liquid composition perfectly penetrates the cracks, depressions and pores of the surface, due to which a reliable coating is formed, which prevents the penetration of even the smallest particles of water.

Waterproofing mixture Ceresit CR-65: technical specifications

Now consider the technical characteristics of this product. Information from the manufacturer on the product packaging indicates the following:

1. To prepare the working composition for 25 kg of dry mixture, you need 6.5-7 liters of liquid. If the application of the mass will be carried out using a spatula, the amount of water should be reduced to 5.5 liters.
2. The prepared mixture is suitable for use within the first two hours.
3. Perform work on the application of the waterproofing layer should be at a temperature of +5 to +30 degrees.
4. Humidity in the room at the time of surface treatment should be no more than 60%.
5. The adhesion of the composition to the surface is 1.0 MPa.
6. The compressive strength in two days is 10.0 MPa, and after 28 days - 15.0 MPa.
7. The hardened composition calmly tolerates more than 100 freezing cycles.
8. Treated surfaces can be used at temperatures from -50 to +70 degrees.

Three days after applying the composition, you can begin the installation of ceramic tiles. The ability to withstand hydraulic loads, the coating acquires 5 days after application.

Before you go to the store for a purchase, each master will want to understand how cost-effective the waterproofing mixture Ceresit CR-65 is. Material consumption in these calculations plays a very large role. The manufacturer informs us that for processing each square of the surface we need from 3 to 8 kg of dry mix. This indicator varies from the thickness of the protective layer and the number of treatments.

Preparation of the base for processing

Before you start applying the finished solution, you must thoroughly prepare the surface. It should be sufficiently dense, even and strong. Before processing, it is cleaned of various contaminants and dedusted. Falling plaster, paint and all kinds of delaminations must be removed. All cracks and depressions are embroidered and coated with special compounds.

A cleaned and even base is spilled abundantly with water, preventing its accumulation and formation of sagging. After that, you can apply the mixture. Waterproofing products of this brand can be used together with Ceresit CO-81 water repellent, which improves the performance of the first material several times.

How to prepare a working solution?

In order to prevent mistakes during operation, you need to know how to prepare Ceresit waterproofing mixture correctly. Feedback from consumers and the manufacturer suggests that a strictly measured amount of water with a temperature of +15 to +25 degrees should be taken to knead the solution. Both components are combined and mixed with a low-speed mixer until the lumps disappear. After the first kneading, the mixture is left for 5 minutes, after which it is re-kneaded.

Application of the mixture

Those who have not yet encountered this product are probably interested in how difficult the liquid waterproofing mixture is in operation (Ceresit CR-65/25). Customer reviews suggest that there is nothing difficult in this process. Anyone can do a similar job. In addition, consumers mention the quality of this material. Judging by their reviews, he will last a long time without causing trouble.

Waterproofing "Ceresite" is applied in at least 2 layers. During the first pass, a mackerel is used. All subsequent layers are applied with a spatula or brush in cross directions to the frozen (but not dry) first layer. As a result, the entire treated surface should have a coating of the same thickness. You can start using the coating after 5 days.