Varnish for plaster and artificial stone

Varnish for plaster and artificial stone Varnish for artificial stone from plaster

Gypsum is a material of natural , even of plant origin. It is often used nowadays for finishing gypsum tiles, and this is a wonderful interior decoration. Gypsum mixes are often used in the arts, medicine and construction. But such a mineral must be reliably protected, because it is quite fragile and quickly begins to deteriorate. Using a varnish for plaster.

Which helps to strengthen and protect the material, while also creating a beautiful finish that looks like a natural stone. We suggest considering a plaster varnish.

Gypsum decorative stone is made by many manufacturing plants, and it can even be created at home using dry powders. Usually an aqueous gypsum mixture is made, which is poured into molds, in which it solidifies.

As a result, beautiful figurines, plates or other products are obtained that can be used to decorate premises.

They can be given any color by adding the required pigment or paint. To enhance the strength of gypsum products, special modifiers are added, as well as sand.

General information

The use of plaster

The gypsum stone has a beautiful shape, and it also looks a lot like a brick or artificial tiles, and also looks great when cladding a doorway and walls. Moreover, it can be used in combination with tiles, plaster, wood, photo wallpaper, as well as plain wallpaper. Gypsum stones are used either as a fragmentary or complete decoration of premises.

The stone is used for facing fireplaces, emphasizing the base of the columns. Gypsum stucco molding is sold in hardware stores, and they also sell moldings from such material, used to decorate walls and ceilings. You can make beautiful garden figurines, figurines, and various sculptures from gypsum powder.


Various building mixtures are made on the basis of gypsum, and for both internal and external types of work. Dry gypsum is added to many putty compounds, adhesives and plasters as an excellent binder.

Such material is added to the majority in many building and finishing materials, because it will have the following advantages:

  • Varnish for plaster and artificial stone Outward beauty.
  • A light weight that will be combined with a high degree of strength.
  • Provides excellent noise and heat insulation.
  • They can be used to make beautiful, unique products to decorate the exterior and interior.
  • Environmentally friendly and safe material for human health.

  • Mold and fungal colonies will not settle on it.
  • It is a vapor-permeable material that breathes.
  • Very simple processing and can be applied to all kinds of surfaces.
  • Plaster products can be easily reshaped by means of affordable and uncommon tools.

How to apply varnish?


Applying Plaster Varnish


Most people paint plaster products because they are sold in the usual grayish white color. Due to the coloring, the moisture absorption values ​​of the gypsum will decrease. In addition to the paint and varnish material, you can use a special varnish composition in order to cover the stone of artificial origin. Many people believe that plaster lacquer coating would be a suitable method for original decoration of stones. Plaster stone varnish is used as a coating, approximately 5-10 days after the tile is laid.

During this time period, the adhesive composition usually dries out completely. Varnish for gypsum decorative stone is available in different types, and it can also have different characteristics and compositions. Most types of varnish composition for gypsum are affordable, absolutely safe for human health, and they also enable the gypsum to be breathable without clogging such material. The use of varnish significantly reduces the rate of destruction of gypsum, makes the surface stronger, and also the product becomes more original and beautiful.

Shellac varnish composition

This type is usually used when creating decoupage, as well as finishing works.

This varnish is made on the basis of alcohol, and it is considered an excellent option for coating a gypsum base. Shellac is suitable for use on all types of modern paints, and it looks great when coated with metallic. This solution will create a thin layer of polish that looks very nice. It is used not only for plaster, but also for processing wood furniture. Shellac can be both transparent and colored, and therefore it can be used without first using a paint and varnish composition.

Some types of tinted varnishes are used to process stone, giving it an aging effect. Most specialists mix shellac and rosin, 1 to 1. This type of impregnation for gypsum will create a beautiful layer of protection on the surface, which completely eliminates the appearance of stains. Using such a varnish for gypsum, a simple stone will take on the appearance of marble.

Acrylic varnishes

This type of varnish has an acrylic base, with the addition of water, modifiers, special resins.

The composition of the acrylic type is not very thick, it is similar in consistency to cream, it is used for external and internal work. Acrylic based gypsum varnish is used as a topcoat because it will create a high strength layer that is water repellent. Special additives in such a varnish composition protect tiles and stone from burnout and aggressive exposure to ultraviolet rays.

In the store you can buy matt, glossy and semi-matt varnish for covering plaster.A glossy look will give a beautiful gloss, but it strongly reflects light rays, and this nuance should be taken into account when painting.

Acrylic-based matt varnish makes the product solid, and it looks expensive and impressive. After drying, acrylic varnish will become transparent and will keep the stone protected and beautiful for a long time. you can use acrylic varnish for gypsum stone indoors, because acrylic-type compounds are safe for human health, they are easy and simple to apply, and they also dry out quickly.

Oil compositions

For application on stones and other gypsum products, oil types of varnishes can be used. It is made from artificial resins and special additives of plant origin, has an oily texture.

After drying, a protective layer appears, which will keep the surface from negative effects, as well as various damaging factors. Make a matte and glossy oil varnish for plaster processing and should be diluted with a special solvent. To make such a varnish composition with a certain shade, you can buy a special tint material that gives a stone or tile a beautiful, unusual shade. It is important to take into account that the oily varnish composition will darken slightly after drying.

Yacht varnishes

Neither acrylic gypsum varnish nor others can compare with yacht varnish.

This type is also perfect for stone of artificial origin made of gypsum. The composition has an oil base and a high strength index, and it should be applied in a thin layer, because drips are very difficult to eliminate. The product dries out in less than 24 hours, and the drying time will depend on the air temperature inside the room.

Rules for applying varnish

Thanks to the varnishing process, the performance and beauty of the plaster can be greatly improved. Everyone will decide for himself what kind of varnish should be used to cover decorative gypsum stones, since each product has its own shine, shade, color and other characteristics.

Here is a list of the main recommendations and rules that should be followed when varnishing to obtain the best result:

  1. Before applying the varnish composition , plaster figures and other elements should be well dried. If you use enamel, glue, paint or other coatings, they must be completely dry.
  2. Any plaster objects, including figurines, figurines, and others, should be kept at a temperature of about +20 degrees for 24 hours. If this is not done, then the varnish coating can quickly lose its performance characteristics.
  3. If you plan to varnish rough products, first you should sand them, for example, with sandpaper.

    The sanding process is desirable before the tile is glued to the wall surface, otherwise sanding can be difficult.

  4. If impregnations are additionally applied, you should carefully read the instructions that come with a particular product. Certain types of impregnations are applied before varnishing, and the rest after varnish. There are also those impregnations that simply cannot be combined with the varnishing process.

The use of lacquer glitters will reduce the natural effect, but make the products more festive.

If the room is decorated in natural and natural colors, styles, then it is advisable to buy matte varnishing solutions.

Preparation of plaster bases

The preparatory stage is quite simple - all kinds of dirt and dust should be removed from the products. When cleaning, do not moisten the surface, as this material quickly absorbs moisture. At the end of cleansing, impregnation should be applied, for example, to increase moisture resistance or impart antiseptic properties to the material. The impregnation should dry out perfectly, and then it is allowed to varnish.

Tool set

The choice of tools should be based on the method used to apply the plaster tile varnish. For varnishing, you can use a roller, brush, foam rubber, as well as a small-sized spray gun. It should be applied to small-sized figures and hard-to-reach places, then a small-sized brush can be used. For sanding the surface after applying varnish to the plaster, you should prepare a machine for sanding, or the simplest sandpaper.

After sanding, you will need a vacuum cleaner to remove dust and dirt.

In addition, prepare:

  • Varnish for plaster and artificial stone Degreaser such as thinner, alcohol or acetone.
  • A few rags.
  • Impregnation compound if necessary.

Simple brushes made of natural materials, as well as fleecy rollers for varnishing plaster products, will not work. When using them, the consumption of the composition will be very large, in addition, many drips will appear on the base.

It is difficult to work with a brush, and when applied, streaks and smudges appear, even with experienced craftsmen. But you definitely can't do without a brush if you want to cover uneven and even torn parts of the cladding.

The best method, compared to a brush or roller, is to use a spray method. The spray gun or airbrush makes it possible to varnish everything with an even layer, the plaster base will become monochromatic. Only at the expense of a spray gun can you make smooth transitions from light to dark parts.

Moreover, holding the airbrush at different distances from the surface can achieve different varnishing effects. There is no need to use an expensive spray gun, even an inexpensive device does an excellent job of varnishing surfaces, but its compressor should be of fairly high quality.