How to prepare the surface for decorative plaster?

Decorating the walls is a painstaking work, consisting of many stages. The first and most important of them is the preparation of walls for decorative plaster, which determines the appearance of further decor.
Why do you need to prepare walls for decorative plaster
Preparation for decorative plaster is a rather painstaking process, but really necessary. Since decorative mixes are quite expensive, it is best that the surfaces to which they have been applied look perfect. Otherwise, minor flaws will increase the consumption of plaster, significantly hitting the budget.
In addition, the walls must be perfectly flat and clean, since the decorative finish is applied in a thin layer. If you skip the primer and the putty process, then soon the decor will move away from the wall and crumble.
Preparing walls for decorative Venetian plaster: what you need to know
To ensure the best application of the Venetian plaster to the surface of the wall and to prolong its life, it is necessary to make a thorough preparation beforehand.
You need to follow these basic steps:
1. Cleaning: removal of dirt, whitewash and obsolete paint layers;
2. Leveling: sanding the surface, leveling the wall and filling irregularities;
3. Processing: covering the walls with soil, creating texture on the surface.
To apply decorative Venetian plaster, the surface must be perfectly clean, even, without defects. You may need to repeat the above steps two or even three times. Otherwise, the wow effect after application will not be provided. Let's take a closer look at each of the stages.
Preparing walls for decorative plaster: the main steps
In the process of renovating premises, it is necessary to follow a clear work algorithm in order to prepare surfaces for decoration and obtain a unique appearance as a result.
Stripping
Before applying the plaster to the surface, it is necessary to remove the previous coating from it in advance. The wall should be completely clean, dry and free of dust, which will make it easier to spot irregularities on it. Their elimination will allow avoiding the outflow of heat and the penetration of moisture into the layers of the plaster, as a result of which it will not crumble and crack.
If dark spots from fungus or mold were detected, they must be treated with special agents (antiseptics and biocides) and the affected areas must be cleaned.
Important! The walls are washed with clean water without the addition of detergents. Otherwise, the level of adhesion between the wall and the material will be significantly reduced.