Plastering walls for painting using technology

Plastering is an essential step in achieving a smooth, even finish on walls before painting. In addition to improving the appearance of your walls, a well-done plastering job makes sure that the paint adheres correctly, giving your finish a longer lifespan.

This post will guide you through the process of plastering walls especially for painting, utilizing tried-and-true methods that produce polished outcomes. These tricks and techniques will help you finish wall finishing correctly, regardless of your level of experience.

Your walls can become the ideal canvas, ready for a new coat of paint, if you follow the correct procedure and pay close attention to detail. Let’s begin by discussing the fundamentals of plastering before painting.

Performing work according to the rules

Walls are plastered and painted using the required materials on a surface that has been properly prepared. Here, you must choose the appropriate putty right away. It may apply to internal or external surfaces.

For external Plastering of walls for painting of this type is made mainly on the basis of cement. It perfectly tolerates temperature changes and is resistant to high humidity.
For internal Here the fraction is finer and therefore the plane will be smoother. But it will peel off at high humidity.

What is needed for this

You should have construction goats or, in dire circumstances, a stepladder for ease of work. You can safely smooth out the required tool on the job site if you have standard scaffolding. Furthermore, this is mandated by safety regulations.

Puttying tasks can be completed on your own, but to do so you will need:

  1. A container for mixing the solution, with a capacity of 15-25 liters.
  2. A construction mixer or an electric drill with an attachment.
  3. A set of spatulas of various sizes.
  4. Construction roller and paint brush.
  5. Devices for grinding putty surfaces.

Caution: Cover the floor with old wallpaper or polyethylene film before beginning any such work. If the flooring is uneven, you can dispense with it.

Which putty is better to use

On the construction market, there are numerous varieties of dry mixes from different manufacturers, both well-known and lesser-known. However, preference ought to be given to reputable producers or tried-and-true putty varieties that have already been put to use.

Putty comes in a variety of forms, and each has unique qualities. There are three types of putties: polymer, cement, and gypsum. Every variety has benefits and drawbacks of its own.

The following are some benefits of gypsum putty:

  • Ecological purity.
  • Such putty does not shrink.
  • Dries quickly.
  • Has good heat and sound insulation properties.
  • Fireproof.
  • Plastic.
  • Possibility of application in layers up to 6 cm.
  • Afraid of high humidity.
  • Sets quickly.
  • A bit expensive.
  • Possibility of application to any surface.
  • Not afraid of humidity.
  • Does not lose its properties under any conditions.
  • Low cost.

In addition to its benefits, cement putty has certain drawbacks.

  • Surfaces can shrink.
  • Relatively low elasticity.

Polymer putties offer the following benefits:

  • Surfaces are highly durable.
  • Does not shrink.
  • Retains its properties under various temperature conditions.
  • Quite elastic.
  • Compatible with all types of building surfaces.

The price, which is fairly expensive, is another drawback.

Note: It is preferable to use putty with a polymer base if you intend to paint the walls. They can offer a superior painting base in addition to being more workable and adaptable.

Calculation of the required amount of putty

Instructions indicating the ideal material consumption per square meter are included in every package.

You can determine how much material is needed based on this:

  1. Calculate the total area of ​​the walls by multiplying the length by the height.
  2. The area of ​​the window and door openings is subtracted from the value of the obtained calculations.
  3. Next, you should multiply the obtained result by the optimal consumption.

It should be mentioned immediately that because of the current curvature of the walls, the results will not be precise and cost-effective. Generally speaking, the computations can be raised by at least 30% or even higher. Basically, you have to be ready to purchase extra putty material whenever necessary.

Preparing surfaces for putty

Now let’s get straight to painting walls with plaster. First things first: get the plane ready. This will be essential for both a smooth surface and longevity.

  • First of all, the old coating is removed, which can consist of tiles, wallpaper, paint or old plaster if it does not hold well. There should be no dust, dirt or greasy stains on the surface.
  • If there is old but strong plaster on the wall, then you can apply a layer of starting putty on top, having previously primed the surface. A layer of starting putty will level the surface and smooth out some irregularities, and also remove defects.
  • Before applying the putty, you need to pay attention to the evenness of the internal and external corners.
  • Internal corners are leveled with an angle spatula. To do this, a starting putty about 5 cm wide is applied to both walls that form the corner and leveled with an angle spatula.
  • External corners are also subject to adjustment or installation of metal corners. This is very important in places of heavy traffic, although such an operation is usually performed on all external corners. This makes it possible to obtain high-quality external corners.
  • All existing small and large cracks or cavities should be repaired before applying putty. This applies to the grooves in which the electrical wiring is laid out, as well as the recesses left by old sockets, switches and distribution boxes.
  • Outwardly, it is possible that one layer of starting putty will not be enough – this is shown by practice. Then it is better to apply the second layer after the first one has dried well. The evenness of the surface is checked using a flat rail or rule.
  • After carrying out the preparatory work, you can begin to apply the finishing layer of putty. Usually, two such layers are applied, which guarantees the quality of the surface, especially since the surface is being prepared for painting.
  • After the finishing layer has completely dried, the surface is sanded (see. How to sand walls after puttying and how to do it correctly). It should be noted that the sanding must be of very high quality.

How to level walls for painting

You may also think about an alternative method for efficiently leveling the walls.

  • For this, drywall is used, and it is mounted on the wall with a frameless way. This makes it possible to save living space and improve the sound and heat-insulating characteristics of housing.
  • In the sheets of drywall, it is better to do all the technological holes for sockets, switches, etc.D.
  • Then you need to prepare the adhesive mixture. You can use glue for tiles cm11. It is poured into the dish and stirred with the addition of water.
  • Glue is applied to the entire surface of the sheet and then leaned against the wall. The sheets are glued so that there is a gap between the floor and the ceiling, about 2 cm wide.
  • Since the sheets are even, the wall should also be even. Considering the fact that the wall is not even, the sheet will not stick to the wall with its entire surface, and since the glue was applied to the entire surface, the sheet will acquire the necessary rigidity after drying.
  • If there are doubts about the strength, you can drill holes and additionally fix the sheets to the wall using dowels and screws.

Puttying walls with cracks

There may be significant flaws in older walls that need to be fixed. They can be puttied completely, without any selection, using a beginning putty like satengips to achieve this.

A special spatula or other sharp object should be used to enlarge and deepen any existing cracks in order to achieve a better coating.

  • This allows the putty to better adhere to the surface. But before applying satengips, the surface must be covered with 1 or 2 layers of deep-penetrating primer, after which it should dry well. After this, you can begin puttying work.
  • After applying the putty, the surface is left until the putty layer is completely dry.
  • Satengips or alabast mixtures settled quickly enough, so you need to take into account this feature of these solutions and do not knead a lot of putty at once.

How to putty walls: stages of work

Primers are applied to the prepared surface. You can prime hard-to-reach areas with a paintbrush, or you can use a roller to speed up the process. However, you should wait for the primer to dry.

  • The dry putty mixture is mixed, with the addition of water, until the consistency of thick sour cream (see. How to dilute putty when doing repairs yourself). For high-quality mixing, you can use a construction mixer or a drill with an attachment. Properly prepared putty sticks to the spatula, and too liquid will flow down. If the putty is too thick, it will be difficult to work with, and it sets much faster.
  • First, apply the starting putty. To do this, take a large spatula and apply the putty to it using a smaller spatula. The spatula is held at an angle of 25-30 degrees to the surface and with one diagonal movement, the putty is distributed evenly over the surface. Each subsequent layer is applied with the overlap of the previous one, somewhere for 50 mm. This makes it possible to get a surface without bugs and differences. The starting putty grasps quickly enough, so you need to knead it in small portions so that lumps of the captured putty do not have time to appear in it. If small flaws are observed in the process of applying starting putty, then it should not be paid much attention to this, since they will close the finish layer.
  • Even corners, both internal and external, put up very carefully. Particular attention should be paid to the internal corners, as a rule, perforated corners are established that serve as beacons simultaneously, therefore, there are, as a rule, problems with the processing of external corners. To process the internal angles, it is advisable to use an angular spatula, but, at the same time, it should be remembered that straight angles are very rare.
  • After the starting putty is completely dried, you should proceed to applying the finish layer. The application technology is the same, but the putty layer should not exceed 1.5-2 mm. Therefore, applying the finishing layer is a thinner and more responsible technological operation.
  • Each subsequent layer is applied after the previous one has completely dried, but you should not overdry the layers, since you will have to prime, otherwise the putty may not take properly. 4 hours are enough for the first layer to dry and you can apply the next one.
  • But before sanding, it is desirable that the last layer dries for at least 12 hours, and in some cases longer. It all depends on the ambient temperature.
  • Sanding is done manually, if the areas are small, or mechanically. The quality of sanding may depend on the purpose of the surface. If the surface is intended for wallpaper, then special quality is not needed, but if for painting, then you will have to work hard. Although, on the other hand, if the wallpaper is thin, it is desirable that the quality of the grinding is good. For sanding under wallpaper, you can use paper with grain P80-P120, and for painting – P120 to P150. As you can see, the difference is significant.

Step Description
Surface Preparation Clean the walls, remove old coatings, and repair any cracks or holes.
Primer Application Apply a primer to ensure better adhesion of the plaster.
Mixing Plaster Prepare the plaster mix according to the manufacturer"s instructions.
Applying Plaster Spread the plaster evenly on the wall using a trowel, starting from the bottom.
Smoothing Use a float to smooth the plaster surface and remove any excess.
Drying Allow the plaster to dry completely before painting.
Sanding Lightly sand the surface for a smooth finish, ready for painting.

Plastering your walls to create a level and smooth surface is an essential part of getting them ready for paint. Plastering correctly not only improves the finished look, but it also guarantees that your paint will adhere well and last longer.

A faultless finish that’s ready for painting can be achieved by using the proper techniques and paying close attention to every step, from surface preparation to the last sanding. It is important to let the plaster completely dry before painting it, as this will stop any future peeling or cracking.

Gaining an understanding of the fundamentals of plastering will help you produce high-quality results whether you’re working with professionals or taking on a DIY project. Your walls will be perfectly primed for a fresh coat of paint with patience and care, giving your room a whole new look and feel.

Plastering walls correctly and with the appropriate techniques is crucial to getting a smooth, long-lasting surface ready for painting. In order to ensure an impeccable painted finish, a layer of plaster is applied during this process to smooth out any imperfections. You can produce a polished look that improves the overall appearance of any space by following the right procedures and using the right tools.

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Veronica Gerasimova

Interior designer, author of books on the design of residential premises. I will help you make your home not only functional, but also beautiful.

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