Gypsum putty - application, characteristics

Gypsum putty - application, characteristics The best gypsum putties - varieties and composition

Gypsum putty for professional craftsmen is used for repair work on ceilings and walls more often than others, because it has all the necessary properties and reliably helps to repair flaws, ideally levels the surface. There are various types of gypsum-type putty, there is also a special application technology.

Gypsum-type plaster is understood as a dry or even ready-made (pasty) mixture, based on gypsum. Usually, for the production of more expensive products, white gypsum is used, for those that are cheaper - yellow.

Also materials include modifying additives of various water-soluble polymers, as well as mineral fillers.

General information

Features and purpose of gypsum putty

In the role of the latter, quartz white sand or mineral flour and other components are used ... The polymers will provide protection against premature drying, cracking and shedding. The size of the fraction of different additives determines the characteristics of the product and the type of application.

The smaller the fraction, the thinner the finished layer will be when applied on the treated substrate. Usually, the most weightless and lightest putties are made on the basis of finely ground marble flour (the size of the particles is 1/10 of a millimeter). Good tools make it possible to wipe the surface to a shine, make it extremely smooth, while using very little material.

Area of ​​use

With a large amount of products, only walls and ceilings can be treated indoors. Only mixed materials (with latex or acrylic) can withstand the action of negative environmental factors, and therefore they are used even outside the house.

Typically, such compositions level the walls for further decoration - for painting and gluing wallpaper.

Due to its excellent adhesion, the putty can be used for:

When applying the gypsum product, any surface will become even and smooth in appearance and touch. From such a mixture, you can make stucco, panels, interior decorations. But here it is important to remember that it is incompatible with chipboard, stones and bricks. OSB slabs can be processed with such a tool, but only after preliminary preparation and thorough priming.

It is still impossible to use such a mixture for a bathroom, sauna, pool, because the finish will begin to absorb moisture and quickly lose strength.

Advantages and disadvantages

What material should be used for leveling and how the gypsum mixture will favorably differ among similar means - we will consider further. Comparing polymer acrylic putty with gypsum putty, you can find a lot in common.

Both of them:

  • Designed for sealing seams, cracks, effectively leveling difficult surfaces.
  • Easy to apply and excellent leveling.

  • Have a white color and elastic texture.

Still, there is a difference. Gypsum material, unlike polymer material, is vapor-permeable. It does not violate the microclimate of the room, does not provoke the formation of fungal colonies, and latex and acrylic are less air permeable, more resistant to moisture, and therefore they are often recommended for outdoor use, that is, facade work. Certain polymer products contain artificial ingredients, but gypsum is almost 100% natural.

Consider the advantages of gypsum-based putty:

  • Favorable cost and economy of consumption per square meter.
  • Environmentally friendly, and not yet toxic.
  • Can be applied to various surfaces, excellent compatibility with other second coat putties (even cement based).
  • High adhesive properties.
  • No cracking, delamination, peeling, shrinkage after drying for a long time.

  • Ease of putty and further sanding.
  • The strength of the finished layer.
  • Nice appearance.

Please note that the material has few shortcomings, but they are still there. The product should be diluted correctly, since otherwise there is a risk of lumps and damage to the entire mass.

The ready-made solution should not be applied for a long time, so that it does not harden, it will not be necessary to dilute the product again. Drying time of dry mix is ​​usually no more than 1 year, while polymer putties are stored for several years.

Another huge disadvantage is the high degree of hygroscopicity. Use the material in damp rooms with regular temperature drops. It is better to use plaster on plaster in the bedroom, living room, office and other rooms with low and normal humidity levels.

Details

Varieties, characteristics and composition

According to accepted norms, all putties are divided into finishing , starting and universal. They differ in properties and characteristics and properties, size and fillers. But in the composition of any product there is gypsum and polymer-type additives, due to which the putty dries quickly, and the treated surface turns out to be smooth and durable. Often these substances can be called gypsum polymers, and they give the coating:

  • Elasticity.
  • Plasticity.

  • Flexural strength.
  • Cracking resistance.

Usually, the products are produced in packages of 5 or 50 kg, and less often there are buckets and cans with a ready-made mass (diluted water) of 5-10-20 liters. Many putties are white, but there are grayish ones, and the most expensive are snow-white ones. The characteristics of the funds differ depending on their type and manufacturer.

Average values ​​of materials are as follows:

  • The operating temperature range is from +6 to +31 degrees.
  • Basic layer thickness without the use of reinforcing mesh or tape 1 cm.
  • Correct dilution - 1 measure of water is used for 2 measures of dry powder.
  • The setting time is 1 hour.
  • Complete drying time is 5 hours or more.

  • Duration of final strength is 1 week.
  • Consumption ranges from 1 to 1.4 kg per square meter.

How long the solution dries, its consumption and other technical characteristics should be specified on the package.

Overview of types

Starting putty

If we talk about gypsum starting putty, then this material is referred to as plaster mixes.

Its main purpose will be leveling the ceiling and walls, sealing large flaws, eliminating large level differences, and also fixing devices for socket boxes. As a rule, this composition can be used to level and smooth the plaster, and in new houses it is used as the first layer or after priming. To save money, you can buy the base mix in gray, because it is cheaper. The product should be applied not in a thick layer, but in case of significant differences - use reinforcing coatings. Without the latter, the layer of dried material will simply fall off.

The largest pits, flaws, it is better to completely close up cement plaster.

Finishing putty

This composition helps to form a smooth surface for finishing types of finishes. Typically, such compositions are applied in 1 layer, forming a white smooth coating. It can be pasted over with wallpaper, painted, even in light colors. In appearance, the finish coat differs from the starter in excellent smoothness (due to the fact that there are no large particles) and whiteness.

Universal composition

There are also universal means (start-finishes) that have unique properties. They can be applied in a thick layer with a minimum particle size. The area of ​​application is wide - sealing joints on drywall sheets, eliminating cracks and deformations, and even leveling the bases. Such products have a white tint and do not require the application of a finishing putty.

Process

Preparatory step and application

Before using the plaster material, it is important to familiarize yourself with the sequence of actions and carefully observe the rules for preparing the solution and base.

Preliminary work

All coatings to which the putty will be applied must be clean. Dust, dirt and stains should be removed. A vacuum cleaner should be used to clean cracks and depressions, which will make it possible to quickly remove even the smallest particles. Then apply a deep penetration primer - it improves the adhesion of the putty to the base.

Preparation of the composition

The instructions always describe the process of making a construction mixture, if it is sold in dry form.

The tools, as well as the mixing container, must be clean. The algorithm is as follows:

  • Gypsum putty - application, characteristics Pour the required amount of water into the dishes.
  • Add powder in small portions (it is best to sprinkle by hand as it will be evenly distributed over the water)
  • As the powder exceeds the water level, wait 2 minutes to soak the mixture.
  • Allow mass manually, but preferably with a construction mixer or drills with attachments (at low speeds).
  • If the mass has a liquid consistency, there is no need to rush to add a new portion of the powder - after a couple of minutes the mass will begin to thicken.

It is not worth preparing a lot of solution right away, and its shelf life is limited, because the mass will begin to freeze and deteriorate.

Application

So, to apply gypsum plaster on the walls, several spatulas of different sizes are required. With a small one, take the mass and place it on a large spatula. Then, with smooth and even movements, paint on walls or ceilings. In this case, the tool should be held at an angle of 55-60 degrees to the surface, and press evenly on the base.

Note that each layer should not be 0.5-0 thick. 8 cm for the starter layer. Directions of movement on the surface of the walls - from bottom to top, on the ceiling towards yourself. If necessary, use a reinforcing mesh.

If the layer is more than 1.5 cm, it is better to use galvanized tape, which is important to fasten with dowels. The applied strokes are leveled with further movements of the spatula.

After the first layer hardens, make the second, and so on until a flat surface is obtained. The final layer is created.

After the final hardening of the putty, it should be sanded with sandpaper, which is attached to the bar. After that, the ceiling or walls can be primed and finished.

The best brands

For craftsmen, the quality factor will be the name of the manufacturer of the putty. An excellent product is one that meets the declared properties and makes it possible to smooth out any surfaces without much effort.

It is interesting that there are both solid brands on the market and goods from young companies of domestic and import production.

It is important to buy a product that has not expired, made in accordance with GOST or other standards - this will increase the likelihood of getting high-quality putty.

Popular gypsum products will be:

  1. Knauf - it has lines of high quality products, and here we include Kniflot for drywall seams, Fugen for internal works, finish for milestone grounds. The line also includes the Rtband Finish tool. But "Satengips" is suitable even for outdoor work.
  2. Volma Arctic is a finishing white putty, has an increased degree of adhesion to all substrates, and it dries out in full only for 5.

    5 hours.

  3. Econcilk РG35 W is a non-shrinking putty, which can be used to process any cracks and seams, and also used for leveling.
  4. Basite - suitable for sealing joints, seams, large and medium-sized cracks, but only for internal work, and it is also resistant to cracking.
  5. Forman 21 is a finishing compound for rooms with medium to low humidity. A minimum amount of dilution water is required.

  6. Bergauf is a range of non-shrinkage putties with increased crack resistance.
  7. Perfect Ecostrat is a gypsum-polymer filler for leveling, excellent sanding and high hiding power.
  8. Runit is a multipurpose interior putty, fine dispersion, it can be easily sanded and smoothed.
  9. EKK200 Chemical - used for leveling with a thin layer of cement, concrete, gypsum, foam concrete bases. It is used only in a dry room, and it is also recognized as very plastic and highly durable.

  10. Eunice's Glare is a basic universal putty that hardens in 2.5 hours and does not shrink.

These are far from all means, but definitely some of the best.

( 1 grade, average 1 of 5 )

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