The most optimal and inexpensive way to finish the walls is painting. However, the paint is necessary on the prepared surface. And it is necessary to make it high quality, since after staining all flaws and irregularities will be visible. The question of how to sharpen the walls under painting, let's try to disassemble in this article.
Content
Varieties of spacure
The putty is two main species:
- for internal works,
- for external work.
It is unacceptable to apply putty for external work inside the building, as toxins are distinguished that are dangerous to human health. The putty for internal works is also not suitable for external work, as it is easy to destroy under the influence of moisture and temperature drop.
According to the components allocate:
1. Cement putty - used when putting the facade or in rooms with high moisture.
2. Gypsum putty - has a beautiful white color, used as the final stage of wall decoration. Not suitable for rooms with high humidity.
3. Polymer putty, which has subspecies:
- acrylic putty - is distinguished by universality. Scope of use: internal, exterior decoration, as both starting and finishing putty,
- latex putty - applied to interior decoration. It has elasticity and ease of work.
According to the stages of work when finishing the walls, the putty is divided into:
- starting putty, which leveled all the irregularities of the walls. Has a rough foundation due to the sand content,
- finish putty, which is used at the final stage of finishing. Has a grain structure that provides perfectly smooth surface,
- universal putty - suitable for both the initial and final stages of work.
Tools for putting the walls under painting:
- spatula 60 * 80, 20 * 25,
- kapron mesh, cell size 0.2 cm,
- sandpaper or grinding bar,
- abrasive grid 60,80, 120,
- bubble level
- capacity for breeding putty,
- metal lighthouses
- construction mixer,
- roller, tassel.
Materials for the preparation of walls under painting:
- finishing putty,
- starting putty,
- primer,
- water,
- cement mortar.
Work on wall leveling
The first stage of work is the alignment of the walls. To do this, remove all existing coatings from the walls. Using emery paper or grinding timber grinding surface. Level check evenness. The maximum difference should be 0.5 cm. After that, the wall is stuffed and waiting for complete drying.
If with the help of grinding it was not possible to remove the irregularities of the walls, there are two options:
- trim wall plasterboard,
- full shuttering walls.
When the difference is more than 5 mm, we make the installation of beacons and align the wall using isogene or cement mortar. To hide coarse surface defects, it is sometimes applied by a layer of about 3-5 cm. Before this starting putty is mixed with well-sieved sand. The ratio of 1: 1.
When the wall alignment work is made using a roller or brush, apply a layer of primer on the walls. This will help get rid of fungi and microorganisms, and putty will be more reliable to the wall. Drying time of primer 4-5 hours.
How to prepare a shpayl mixture:
1. Prepare a bucket with water and putty.
2. Read the instructions, the proportions of water and dry mixture are indicated.
3. Divide a small amount of spacion mixture, as the putty is frozen very quickly, and it will be more difficult to work. The optimal time of using putty is 30-40 minutes.
4. Be sure to spill putty in the bucket, and then fill with water.
5. We stir the mixture with a mixer and leave for 5-10 minutes, for swelling.
6. Mix again 3-4 minutes.
7. We do so three or four times.
8. The mass should be without lumps and have an elastic structure.
Starting putty is always sold in a dry form, but the finish is not necessary to breed with water. Since there are many types of long-playing finish putty, which is sold already in the finished form. Such a putty is more convenient and does not freeze when working.
Application of starting putty on the walls
To apply starting putty, we use two spatulas. Large weaving putty on the walls, and small - distribute putty on the surface of a large spatula. Equally distribute the putty for more convenient application.
When applying putty from left to right, the upper part of the spatula is the right than the lower one. Keep the spatula at an angle of 45-6 o °.
It is better to apply starting putty into several layers, waiting for the complete drying of the previous layer. The optimal layer for applying a starting putty 3-4 mm.
To prevent the appearance of cracks in the wall, use a kapron network, with a cell size of 0.2-0.5 cm. Apply a layer of putty on the wall and attach a mesh to it, then apply a second layer on the grid and distribute the spacure over the surface. The thickness of the layers is 1-2 mm.
Experienced painters replace the grid with fiberglass or glass windows that are sold complete with special glue. After finishing with glass windows, painting is possible, but in this case it will take 2-3 times more paint than after finishing the finishing putty.
Using emery paper, a large fraction is spinning the surface. Small graininess on the surface, after applying the starting putty - this is the norm, because such a putty is smaller than the finish.
Finish spacure - features of application
The next stage of finishing is the finishing putty on the walls. The layer of applying the finish putty is much thinner than the starting. Before applying, read the instruction, there must be the maximum layer of application of the finishing putty.
The finishing putty of the walls under painting is applied in several stages, and after complete drying of the surface is polished by an abrasive grid, a grain of 60 or 80. When grinding, do not overdo it in order not to combat the entire layer of putty. Using the level, check the evenness of the walls.
How to check the walls on irregularities
After completion of putty work, you must make sure that the walls are fully prepared for painting. Since all small irregularities and roughness will be visible when painting.
Take a desktop lamp or spotlight, tilt to the wall at a slam angle, if the small defects are visible, it is worth getting rid of them with a grinding machine or a manual bar.
The primer is the final stage of the preparation of walls to painting.
In the completion of putty works, after drying the last layer of putty, you need to get rid of small pieces of putty and dust. To do this, use a dry rag or vacuum cleaner. Before the painting wall is treated with primer.
Technology of preparation of a plasterboard wall under painting
The process of applying putty on a plasterboard wall is much easier. To do this, make a number of actions:
1. Apply primer over the entire surface of plasterboard walls. In no case cannot use alkyd primers, since the gypsumocatron is deformed. Grinding layer thickness 0.02 mm.
2. Prepare the wall. Inspect the plasterboard jacks and how the screws are screwed.
3. Pun a special fiberglass mesh on the joints of drywall sheets so that the seams are in the middle of the tape.
4. Speed \u200b\u200bjoint. To do this, prepare two spatula 12-15 and 30-35 cm.
5. Next to cover screws. It is necessary to do it crucifably to hide all the grooves and heads of the screws.
6. Alignment of the corners. Prompt one side of the angle, and after drying - another.
7. After drying all the joints and the corners, attach metal corners on window or doorways.
8. Put the entire surface. Using a small spatula, press the putty into the opening of the profile. A wide spatula will help to crush the putty on the surface.
9. For applying putty on the arch, use a special plastic corner. Secure the corner of the stapler.
10. Since this corner is thicker than usual aluminum, putty is applied twice.
11. After drying, stabbing all irregularities.
12. The next stage is the application of the finish putty. Apply putty should be very thin layer, with a wide spatula.
13. After drying the finish putty - a stingy wall.
Tips for putting out walls under painting under painting:
- never apply the finishing layer of putty until the starting start is completely
- approximate calculation of putty occurs in this way: by 1 m² about 1200 g of dry putty,
- when choosing a primer, focus on deep penetrating species that are resistant to temperature drops,
- fort consumption for 1 m² about 80-100 g,
- the maximum thickness of the layer should not exceed 4 mm,
- to apply putty on internal angles, use a rule and a wide spatula,
- the durability and strength of the walls depend on the quality of the putty
- when preparing a spacion mixture, focus on the consistency of thick sour cream. Since a very liquid mixture crashes from a spatula, and too thick mixture hard to work,
- excellent qualities are distinguished by putty: Ceresit, Triora, Polimin, Saten, Knauf,
- when breeding dry putty, use the respirator,
- apply a putty different directions: horizontally, vertically and diagonally,
- never try to breed with water thickened putty. Thus, the quality of the surface of the surface is spoiled,
- for large surfaces, use a large spatula, and a smaller spatula is suitable for corners or hard-to-reach places,
- it is best to choose a spatula made of stainless steel,
- a variant of using an expander pistol for applying a spike mixture is possible. In this case, to smooth putty, use a rubber spatula,
- at the end of the work, we immediately wash the tool, as it will be hard to do it,
- the first three days after completion, protect the room from moisture, hypothermia or too high temperatures.
If the process of applying putty seems very difficult, it is better to trust the professionals. After all, with improper preparation of walls to painting, you will have to redo everything first, and this is a double consumption of materials, money and time. For the putty of walls under painting prices are different, it all depends on the area and quality of the walls. One square meter of putty under painting on a concrete wall costs about $ 8, on plasterboard - $ 6.
