Puttying plasterboard ceilings for painting: secrets of the masters
Puttying a plasterboard ceiling for painting is a mandatory stage of finishing work before finishing. You can do them yourself with a set of spatulas, serpyanka and other materials. First, the surface is cleaned and primed, after which it is applied to the joints, screw heads, and then to the main part. A step-by-step description of the actions is presented in this article.
The content of the article
Selection of mixture and materials
Before you figure out how to putty a plasterboard ceiling for painting, you should choose the right composition, as well as find the required tools and available materials. The choice of mixture is important, since not each of them is suitable for all rooms and premises. All compositions are divided into 2 types:
- dry;
- liquid.
It is quite clear that for finishing drywall sheets it is better to choose dry putty, because it does not collapse under the influence of temperature changes and moisture, and also preserves the material itself.
Also, when studying how to putty a plasterboard ceiling, it is worth studying the composition of the raw materials. Based on this criterion, mixtures are classified into 3 types:
- gypsum based;
- with the addition of organic polymers;
- cement base.
You can work with drywall of any composition, but you need to take into account the characteristics of the room. If it is too humid there (kitchen, bath), it is recommended to use cement or universal putty. They are not destroyed by water.But if you have to work in an ordinary living room, for example, in a living room or bedroom, you can consider a gypsum mixture, which is more affordable and of quite high quality.
It’s not difficult to figure out how to putty plasterboard on the ceiling if you prepare a set of tools and materials in advance:
- brush (to brush off dust);
- fine-grained sandpaper;
- knife with a sharp blade;
- set of spatulas;
- sandpaper grater;
- the putty itself;
- primer composition;
- drill with mixer (type of attachment);
- Serpyanka
Preparatory work
The instructions on how to putty a plasterboard ceiling for painting first of all recommend preparing the ceiling surface. The work is carried out in 2 stages, associated with cleaning and priming. The main actions are:
- First you need to carefully inspect the surface in good lighting. If there are protruding screws or other fasteners, screw the caps flush with the ceiling, but not recessed into the sheet.
- Dust the surface with a stiff bristle brush - a plasterboard ceiling before painting must first be thoroughly cleaned.
- Prepare a small volume of mixture to cover all the seams and holes left by the screw.
- The seams are covered with serpyanka. You can also use paper tape, and you need to press it well so that the plasterboard ceiling putty for painting completely covers the object.
- After finishing the seams, apply the compound to every second layer using the widest spatula.
- Once the mixture has dried, you can begin another important finishing process - priming. The prepared solution is applied with a roller; it should be wide enough. You can also use a brush as a substitute. It is better to work with joints, as well as the surface of screw heads, with a small brush.
Main works
Now it’s time to figure out how to putty plasterboard on the ceiling for painting. To do this, first prepare a solution:
- A small volume of water is poured into the bucket - within a third.
- Gradually add the mixture and stir with a mixer attached to a drill.
- When the solution takes on the consistency of thick sour cream, stop kneading and let stand for 5 minutes.
- Then beat again with a mixer and begin the main work.
Regardless of what you use to putty on a plasterboard ceiling for painting, the solution should be prepared only in small volumes in order to immediately use it for finishing. The main stages are:
- Take a wide spatula and use a smaller tool to place the mixture on it.
- Apply the tool to the ceiling surface at an acute angle of 20 degrees and apply the composition crosswise so that there are no traces of the strip.
- Next, the ceiling is allowed to dry and inspected with a flashlight. If there are depressions, fill them with liquid putty.
Joint finishing
It is clear how to prepare a plasterboard ceiling for painting - to do this you need to prepare the surface, prime it, then mix the solution and distribute it evenly. However, the work does not end there, because the corners also need to be finished. Despite the fact that their area is much smaller, processing will be more difficult. The reason is that the corners meet at right angles to the wall, i.e. these are 2 surfaces.
Therefore, instructions on how to putty a plasterboard ceiling consist of the following steps:
- Take 2 spatulas for work - with a wide and narrow blade. They walk along one corner. The composition is applied at an acute angle, but pressing hard is not recommended.
- Wait until the surface is completely dry.
- Process the second side of the corner in a similar way.
At the very end, finishing is carried out, for which it is better to use the appropriate putty. The layer should be very thin - literally 12 m and no more. The ceiling is allowed to dry for 1-2 days, after which you can begin painting.