- April 26, 2024
Although gypsum plasterboard and spatulas are often confused with each other, it is worth bearing in mind that in reality we are dealing with different products. What is worth knowing about them?
Spatulas
Gypsum putties, also commonly known as putties, are most often used topically to fill larger cavities and to level the surface. They are often referred to in terms such as "base" and "start", which does not surprise us when we consider that they allow us to lead out planes of ceilings and walls. They are used on walls and ceilings, and their layer can be up to six millimetres, but you should take into account that they are harder than the smooth and less graceful when sanding.
Smooth
Gypsum plaster is produced on the basis of gypsum binders, it can be both natural and synthetic gypsum. Their characteristic feature is their relatively fine grain size, and their layer is usually about 2 millimetres thick. They are used to compensate for unevenness which is a consequence of previous work and to smooth the surface.
Acrylic smoothness and its specificity
Even before we decide to use the finish coat, we should make sure that the substrate is cleaned not only of dust and dust, but also of paint residues. What is important is that it is first applied to the ceiling, and only then is it ensured that it appears on the walls, starting from the window side. A trowel is used to apply the finish coat and must be pressed against the substrate. As a rule, it is necessary to apply not one but two layers of the finish coat. The first one is thicker, and before applying the next one it is necessary to wait for it to dry and then sand and primer it. The second layer is to be used for final alignment. Grinding is done in circular motions. It is best suited for paper and abrasive mesh. The market also offers us a dust-free finish, characterized by the fact that they can be processed wet, when mixed with water. The key to this is to fine-tune the finish coat, because when the lumps appear on the surface, unevenness will be present.
Overview of the star types
Plasterboard is the most popular on the market, but it is not the only available solution. We can also speak about high popularity in the context of the cement, cement-lime, limestone, acrylic and polymer coatings. In the case of a plasterboard we deal with a dry mixture. Its main adhesive is building plaster, although sometimes it is replaced by anhydrite. It is possible to use it after mixing it with a sufficient amount of water. It can be easily applied and smoothed, as it is soft both in machining and sanding.
Application of gypsum boards
Cement and cement-lime smoothing are made with the use of white cement and calcium, which makes their surface similar to that of gypsum smoothness. The dry mixture must be mixed with water and the smoothness itself is particularly suitable for external walls. Such genocide is less popular. This is mainly because they have a much harder surface and therefore also make sanding more challenging. If the area is to be large, both time and effort are required. However, it works well in rooms with increased humidity, such as bathrooms, and in places where walls are at risk of damage. Even less frequently, limestone is used, but it can be found in rooms with increased sanitary requirements, such as storerooms. Such a smooth surface is resistant to both mould and biological contamination.
Application of polymeric smoothing
Polymer matrices are sold both as ready-to-use mass and as dry mixtures prepared for dilution with water. They are characterized by flexibility, good adhesion to the substrate and the possibility of applying thin layers. They are most often used to improve the quality of already made plasterboards, although they are often used to smooth the surface of plasterboards.
