With decorative plaster, it is easy and simple to create expressive and unique patterns on the surface of the walls. Admiring the spectacular facade, we can conclude that only specialists can perform such a task. However, it is not. The main role in creating original reliefs is played not by the skill of a specialist, but by the material he uses: decorative plaster.
Types of decorative plaster
It contains special substances: fillers.
It is they who help to create a beautiful drawing. No special and expensive tools are required for this. But you need to choose the right plaster mix and know the technology of its application.
The composition of decorative plaster mixes is different from the composition of the usual not only the presence of filler. If the material is intended for facade (external) work, it also includes additional components that provide an increased resistance of the facing surface to moisture, temperature extremes, and ultraviolet light.
Design effects that can be obtained using special decorative plastering techniques:
Old wall effect
Craquelure - decorative plaster with cracks
Texture of decorative plaster
Decorative plaster with mother-of-pearl silk effect
There are three types of decorative plasters:
They all have their own characteristics, both in terms of composition and application rules.
Mineral decorative plaster
The base of mineral plasters is natural ..
. Crumbs and dust of various valuable kinds of stone are used as a filler: granite, marble, onyx, malachite. Included are quartz sand of various grain sizes. Cement and gypsum act as a binder. Cement-based plasters are classified as facade.
Mixes with a gypsum binder are used exclusively for interior work.
Mineral decorative plaster "Bark beetle" 2 mm. Premium quality. For outdoor use
Mineral decorative plaster on an emulsion basis for outdoor and indoor use
All types of mineral plasters must be prepared to use by adding the dry mixture to water in the proportion indicated by the manufacturer.
Preparation of plaster.
Add dry components to a container with water
The ready-made mixture can be applied to the wall in several layers.The final stage of work is waxing or painting. The wax serves as a protective and decorative coating.
Application of facade plaster
Since all types of mineral plasters are diluted with water, they do not have a long "life" of the mix. Therefore, it is recommended that you prepare just enough mixture so that it can be worked out before it starts to solidify.
One of the advantages of mineral dry plasters is that they have a much lower price than ready-to-use acrylics.
Finishing the facade with textured plaster
Textured plasters are pasty mixtures that can be tinted in any color during the mixing process, or coated with paint after the finishing layer has been applied and hardened. This type of plaster is distinguished by its unsurpassed plasticity, which allows you to create real masterpieces on the walls.
Acrylic textured plaster
This effect is provided due to the natural fibers included in the mixture, which can be cotton, linen, wood ..
. Some manufacturers use ground brick as filler. With the help of mixtures of this type, you can create relief paintings, bas-reliefs and panels.
Decorative facade plaster
Popular "Venetian" plaster is not a separate type of decorative plasters, but belongs to the category of textured mixtures. It is called "Venetian" because of its special composition, which allows the use of a special application technique, which provides a spectacular wall pattern.
Plasters of this type are heterogeneous granular masses. Potassium silicate (silicate plasters), synthetic latex (latex plasters), cement-lime composition act as a binder. There are two types of structural renders:
Hence the classification of these mixtures: water-borne and solvent-borne. The main representatives of this type of finishing mixtures are "Bark beetle" and "Fur coat".
Bark beetle plaster
Bark beetle finishing
Decorative plaster coat
Precisely they are most often used in facade decoration. The reason is simple: these mixtures are easy to apply, form an attractive surface pattern, and have excellent wear resistance. In addition, they have one more advantage: a reasonable price.
For dilution of solvent-borne mixtures, White Spirit is predominantly used. It should be noted that it does not dissolve anything in the plaster mass.
He precisely dilutes it to the desired consistency. Therefore, experts call any liquid added to the finishing composition not "solvent", but "diluent".
Ceresit acrylic plaster
Pebbled plaster "Ceresit"
Acrylic plaster is the most popular among structural mixtures. Its distinctive feature is that it is ready for use immediately after purchase. These mixtures do not need to be diluted with water or solvent.
This fact is their undoubted advantage. In addition, acrylic plasters are significantly more elastic and durable.
They have higher adhesion (adhesion to the substrate) than mineral and solvent based structural ones. Acrylic can be applied to almost any surface: wood, brick, concrete, aluminum.
In sealed packaging, acrylic plasters retain their properties from 6 months to 1.
5 years. Some manufacturers produce mixtures with a shelf life of up to 2 years. Another advantage of acrylic compounds is that the walls treated with them can be painted.
"Small bark beetle", decorative acrylic plaster for exterior and interior use
Decorative plaster CT 760 Visage "Architectural concrete"
The only drawback of these mixtures is their lower vapor permeability than mineral ones. However, it is sufficient to use this material for the construction of a "wet" facade, which is also a heat insulator.
|Product type||Acrylic decorative plaster|
|Consumption (kg / m2)||0.7-2.0|
|Setting time at temperatures from + 20 ° C||5-8 hours|
|Operating temperature||+ 15 ° С|
|Full cure (days)||5|
|Application method||Spraying using a pneumatic spray gun with a nozzle diameter of 4.6 and 8 mm, structured rollers.| Decorative plaster
Mineral plasters must be prepared for use by diluting with water.
On average, up to 30% of the liquid is required. All manufacturers indicate the required proportions on the product packaging. Mineral mixtures are applied in two layers.
The use of any plaster compound requires careful surface preparation. The walls should be inspected for deep cracks, making sure that the bearing surface is strong enough and does not require major repairs.
Preparation of walls for plaster
The next stage of work is priming. To accomplish this task, deep penetration primers are used, intended for external finishing work.
Plastering of the facade starts from the corner of the building. The work is carried out in stages, gradually applying the mixture to areas of a small area. The first layer is base.
It is applied with a trowel so as to avoid overlaps and to obtain the most even surface possible. For leveling, you can use a wide-blade trowel or a rule.
Performing work on the facade plastering
The main work on decorating the facade occurs at the next stage of work: when applying the second layer.
Decorative plaster and facade decoration
Special textured rollers are used to apply decorative plasters. They differ from ordinary ones only in that they are equipped with rollers with a relief surface.
Roller for decorative plaster
Depending on the material of which the roller is composed, there are several types of rollers:
It is conditionally possible to divide all types of rollers into textured and structural. The latter have a more relief surface than the former. Textured ones are designed to create imitations like marble, natural stone, textiles.
Plasters "Bark beetle" and "Fur coat" are applied with textured rollers.
Structural rollers are designed to produce a pronounced relief pattern, consisting of a repeating rather complex pattern. Outwardly, it creates the effect of volumetric wallpaper. The decorating technique with these tools is more complex than with textured rollers.
Types of rollers
Working with structural ones requires utmost care and attention.
The rollers of these tools are usually made of wood or plastic. The use of such rollers requires compliance with several rules.
Structural plasters are used to obtain the "Marsiniada" texture.Using this technique, they create a stylish and effective pattern that is suitable for indoor and outdoor wall decoration.
According to the instructions, a structural mixture "Desan Versagel" is required for plastering. However, the surface pattern is obtained using a special technique, and not because of any peculiarities of the composition.
Therefore, any suitable structural plaster can be used to create the "Marsiniada" texture.
Instructions for applying plaster
Step 1. Open a container with wet plaster and mix thoroughly with a spatula.
Step 2. Using a stainless steel trowel or spatula, apply the mixture to the wall, trying to obtain an even layer up to 5 mm thick.
Step 3. Immediately after applying the plaster, cover it with a thick plastic wrap. Smooth all the waves with your hand so that the film adheres to the plaster mixture.
Step 4. Perform a series of movements with the palm, trying to dislodge part of the film without leaving a fingerprint.
Thus, a thin layer of plaster is displaced over the entire surface of the wall. Make sure that no air bubbles remain under the film.
Creating a texture
The film does not straighten evenly, but creates a chaotic texture
Step 5. They are waiting for the relative hardening of the plaster mixture (at least 12 hours).
Carefully remove the plastic wrap.
Remove the film
Step 7. After the walls are completely dry (after 24 hours), treat the surface fine sandpaper.
Step 8. Remove dust from the wall with a dry paint brush or cloth .
Step 9. Apply a layer of finishing primer with a brush or roller.
For better protection of the plastered surface, a coat of varnish or paint can be applied to the wall.
To accomplish this task, use any of the most convenient tools: spray gun, roller, paint brush.
Application of varnish
Important point: the varnish or paint is rubbed over the plaster with a soft foam sponge until dry. This allows you to fill in all the recesses of the relief pattern and gives the surface a finished look. While working with a sponge, it is periodically thoroughly washed with water and squeezed out. Several coats of varnish or paint can be applied.
In this way, the desired shade of the facade color is obtained.
The resulting texture
To obtain the "Coral" pattern, use structural plaster with a filler of fine or medium grain size.
Step 1 . Open the container with the composition and mix it thoroughly.
An even layer of plaster mix is applied to the wall. Use a stainless steel trowel, trowel or trowel.
Applying the first coat
Step 3. Smooth the applied coat with a spatula with a wide metal blade.
Take a spatula with a rectangular blade and gently press it against the wall surface. This is an important stage in the work, so you need to be extremely careful.
Creating a relief
To obtain a picture, observe the following technique:
Step 5 . After 15-20 minutes, the drawing is slightly smoothed with the same tool, leveling its relief.
After 24 hours, the wall is treated with fine-grain sandpaper.
Step 7. Apply a protective composition: finishing primer, varnish or paint.
Apply paint or varnish
Apply second coat
In this way, a beautiful embossed "Coral" pattern is obtained. The density of prints can be any.
But the most effective pattern is without overlapping prints.
Option for painting plaster
Posted By: Work Style |04, Nov 2020
Posted By: Work Style |08, Nov 2020
Posted By: Work Style |09, Nov 2020
Posted By: Work Style |09, Nov 2020
Posted By: Work Style |04, Nov 2020