Dry plaster gypsum mixture: features of use

Gusevsky Andrey Anatolyevich

Dry plaster mix

Dry gypsum plaster mix is ​​quite widely used in finishing works. It gives a perfectly flat plane.

Today we will consider dry gypsum plaster mixes and the rules for their preparation. After all, there are several ways to do this. In the video in this article, you can see the whole process clearly. An instruction on cooking options will also be given.

Main properties, features of use

Basically, dry stucco gypsum mixtures, the basis of which is gypsum, are used for interior decoration:

Attention: Dry plaster gypsum mix is ​​used for preliminary alignment of vertical and horizontal surfaces, just before applying decorative finish.

• Using the mixture, you can mask and close up a variety of surface defects. In addition, slopes or corners can also be formed.
• At the same time, it is very important that gypsum leveling mixtures can be used only in those rooms in which the moisture level is not more than sixty percent. If this is a large room, and there is a lot of moisture in it, then it is better to use hydrophobic finishes in this case.
• Plaster mixtures can be laid in a thick layer. This will not harm the durability of the finish. Therefore, with the help of such mixtures, it is possible to even out significant irregularities and small defects. Moreover, such plaster is often used not only in cases when it is necessary to eliminate the relief on certain surfaces. Also, it is often used to level walls with a heaped level.

Gypsum plasters have many advantages, but, nevertheless, I would like to note the following:

• Affordable cost, and it does not depend on the brand of the mixture;
• Stucco is universal in use;
• A huge variety of ways finish finish;
• The mixture adheres perfectly to almost any surface due to its high degree of adhesion;
• Allergens and toxins are completely excluded in this material, therefore it is absolutely safe;
• Preparing the solution is very simple, and application is convenient.

Attention: The disadvantages of this material include a low level of hydrophobicity, and, consequently, the inability to use plaster in the decoration of the facade.

Composition and preparation

Let's figure out what dry gypsum plaster and its packaging are made of. The main components of standard dry mixes are gypsum and lightweight fillers. Also in their composition they contain modifying additives.

It depends on them the quality of the material, the level of its adhesion and many other characteristics:

• All manufacturers use different compositions of components in the manufacture, but ready-made mixtures mainly have similar properties that meet certain standards and norms.
• To make dry mixes convenient to store and use, they are delivered in special packaging. Usually, gypsum finishing materials are packaged in specially designed kraft bags. One such bag weighs an average of fifteen or thirty kilograms. Most builders prefer this kind of packaging.
• Store the mixture in a dry room. It is very important that it is well ventilated. In order for the packing to retain its properties, microperfection is done.

Attention: In the case when the humidity of the warehouse exceeds the norm, the mixture becomes unusable, hardens. That is why, before buying factory plasters, check the quality of the purchased material.

• It is very important that the mixture can be stored for six to twelve months. After this, important material properties are lost. In this case, high quality finishes are not guaranteed.

Photo of gypsum mixture preparation

If you do not have a large amount of funds, but you need to finish a large room, then you can not spend money on its purchase, as you can prepare it yourself and in this case its price will not be high.

First way

Dry gypsum plaster is quietly sold in retail. But it is quite possible to do it yourself.

To prepare a high-quality and inexpensive mixture, adhere to the following proportions:

• Building plaster - 3 - 4 bags;
• Plaster mix, type ABS (Eco-gypsum or Rotband) - 1 bag;
• Fine sawdust wood - 1 bag.

There is nothing complicated in preparing the mixture:

• Those components that have been listed must be mixed in a dry state until a homogeneous mass is obtained. Then the mixture needs to be poured into bags made of polyethylene, can be in other containers, and stored here.
• Before using the mixture, it must be diluted with a small amount of water. Mix well with a special mixer.
• Factory plaster mixtures in their composition contain special additives that contribute to the regulation of the drying speed of the solution. Thanks to this, working with plaster becomes easier and more convenient.
• Sometimes it happens that a self-prepared solution sets too quickly. To prevent this from happening, add wallpaper glue to its composition.
• It is very important that not every wallpaper glue can be combined with gypsum. I would like to recommend CMC glue - one of the proven options.
• Slaked lime can be added to the composition of the plaster. Thereby. The material will become more ductile. Also, the lime that is used to create the solution has bactericidal properties. Due to this, mold will never appear on the walls.

Second way

To prepare a high-quality gypsum-chalk putty, you will need components such as a solution of wood glue (5%), determine the amount by the consistency of the glue; one kilogram of gypsum and three kilograms of chalk.

The manufacturing process of the mixture consists of three stages:

• The first stage is the grinding and mixing of each component until a homogeneous mass is obtained. You can use the capacity for this. A volume of ten liters is quite suitable. And you will also need a hammer drill and nozzles.
• First of all, crushed gypsum and chalk should be mixed. When you get a powder of homogeneous mass, you need to add glue and mix again. The mass should be obtained, without pronounced seals, lumps, light gray in color.
• I would like to note: the putty prepared exactly according to the recipe will dry quickly. Therefore, glue as a binding agent must be added to the dry mixture. It is better to do this before applying to the surface.

Caution: If the mixture is prepared according to this recipe, then it should be used at the finish leveling, and not with roughing. Putty will be applied conveniently and simply, if it is prepared correctly.

Third way

Thanks to this recipe, you can prepare a mixture that can finish the painted surface. Sometimes such dry gypsum plaster is quite useful during repairs.

• For this you need: one hundred grams of NF-1 driers, two kilograms of gypsum and one kilogram of drying oil.
• It is possible to apply this hard putty when finishing an oriented chipboard. To speed up the drying process, in this case, you can use a drier.
• In the process of preparing the mixture, chalk powder can be used instead of gypsum. The proportions are the same. Thus, the mixture will dry more slowly, moreover, it will be able to maintain its original properties.

Attention: I would like to give one piece of advice. When making plaster mortar, do not forget about personal safety equipment. Use gloves, goggles and a respirator.

Fourth way

By its consistency lime plaster It looks like regular plaster. The only difference is that it dries dry.

Caution: Because of this, a similar solution must be applied with a thin layer. It should be borne in mind that each of the subsequent layers must be applied only after the previous layer is completely dry.

• To apply the solution was convenient and simple, you need to add gypsum to the lime plaster. The result is a lime-gypsum composition. Its layer dries on average in five minutes. In addition, its distinctive feature is optimal adhesion.
• To get a lime-gypsum mortar, you need to use three parts of the lime mortar and one part of the gypsum powder.

How to prepare the composition:

• Gypsum must be placed in a container and add water in small portions. Mix well until you get a plaster dough. In the composition that will turn out, it is necessary to add a lime solution. And again, mix everything thoroughly.
• I would like to note that you need to mix thoroughly, but you do not need to mix for longer than one minute. Otherwise, the solution will lose strength. You can use the prepared solution immediately after preparation.

The cost of the factory mixture is relatively not expensive, but, despite this, the purchase of finishing materials has a significant impact on the cost of repairs. Significant savings can be made if you prepare dry gypsum plaster mixes yourself. If you look at the video provided in this article, you can find much more useful information.