Dry plaster, which is also called drywall, is used in the process of finishing the premises. It is a cheap and indispensable material for leveling the ceiling, walls and even the floor. In this article we will talk about this unique finishing material, what it is - dry plaster, from which it is made, where it is applied, as well as the advantages and disadvantages of dry plaster.
What is dry plaster
Dry plaster is a sheet of building plaster, lined with cardboard on both sides. Therefore, it is also called gypsum plasterboard.
This modern building material is not suitable for exterior decoration of buildings, but indoors it is simply irreplaceable. Using plasterboard (dry plaster), you can perfectly level the curved ceiling, walls and floor, for the purpose of their subsequent finishing. The sheets of dry plaster, as a rule, have such sizes: length from 2,5 to 3 m, width 1,2 and 1,3 m, and thickness 12 mm.
That is, drywall is a sheet of a rather large format, so with their help you can very quickly perform internal finishing work. In the end, it turns out quite inexpensive and high-quality.
About what it is - dry plaster, and how it is made. small video.
Facing with dry plaster
Dry plaster sheet is fastened in many ways, the choice of which depends on the type of surface intended for decoration. So, to the concrete, brick or stone surface, the sheets of dry plaster are fixed with special mastics, and to the wooden one they are simply beaten by conventional tolevye nails with a wide bonnet.
If you decide to trim the concrete ceiling with dry plaster, then at first nail the dowels (concrete nails) to it with a frame made of wooden racks or boards prepared beforehand for repair. Here the important role is played by how competently the dimensions of the future framework are calculated, so that at the places where the plasterboard sheets are joined, the width of the carcass racks would be at least seven and a half centimeters.
To the ceiling surface, vertical slats or boards should be nailed with a length of at least seven centimeters. But, since it is a question of concrete, it is not so easy to pierce it with nails - it is necessary to drill. So, drill a hole for nails of the desired diameter beforehand with a drill and insert wooden, or better, plastic plugs (chopiki) into them, and then drive the nails into them at a distance no more than half a meter from each other. If the concrete slab is too hard for a conventional drill (carrier), then it may be necessary to use a special professional drill with a perforator. However, it should be borne in mind that dry sheet plaster should be nailed to the frame not closely (not the joint into the joint), but in such a way that there will be free space between the sheets (approximately four millimeters) for subsequent finishing of the joints.
Thus, in order to improve the thermal insulation of the room, between the sheets of dry plaster and the ceiling, we leave a free space about two and a half centimeters wide.
However, nailing drywall to the ceiling, especially to the concrete, as we saw, is quite troublesome. This requires time, skills, special skills and the availability of tools for repair. The easiest way to glue a sheet dry plaster to the ceiling with a mastic, which can be purchased at any construction store. It has a consistency of dough, and in its composition there is both a building plaster and a 2% solution of special bone glue (it is required for the building plaster not to harden at the time of application).
During the application of the sheet dry plaster to the ceiling, the mastic is spread with a spatula on the sheets of gypsum board in the form of small tubercles in the center, at a distance of forty centimeters from each other, and at the edges are applied in continuous bands. After applying the sheet with the mastic applied to it on the ceiling, it is carefully pressed and slightly knocked in those places where the mastic is applied so that it is flattened and the sheet is laid flat and dense. Then, after all the sheets of dry plaster are attached to the ceiling, they are given time to gain a foothold, and fill the seams between the sheets with a gypsum test, and then shpaklyuyut.
Thus, gluing sheets of gypsum board directly to the ceiling (or in exactly the same way, to the walls), you can win free centimeters in the room. And it happens so necessary in the apartments of a small area.
Sheets of plasterboard, or dry plaster, after attaching them to the place intended for them, are painted with any paint, and the walls can be pasted with any wallpaper. Before pasting, in order to prevent the appearance of rust on the nail heads, they should be painted with either lacquer (alcohol) or any nitro-enamel.
If you have a plasterboard ceiling, then you can also cover it with wallpaper, like walls. However, it is best to paint the ceiling in several layers with ordinary glue or oil paint, or simply whitewash with water-emulsion (but not lime, because it does not adhere well to plasterboard).
On how to glue sheets of drywall to the surface of the walls, we give here a small video.
Advantages and disadvantages of dry plaster
Of the advantages of dry plaster, you can, first of all, call a low thermal conductivity and high soundproof qualities. It is also important that gypsum board is a fire-resistant material, at least it is much more resistant to fire than ordinary plaster. Dry plaster is a non-toxic, environmentally friendly finishing material that does not have a sharp odor, which is suitable for finishing even children's rooms and bedrooms. Dry plaster is a breathable material for finishing. Which is important for an apartment or a house.
Drywall is able to successfully control the level of moisture in the room. If the moisture content in the room is increased, it will immediately absorb it, and if lowered, it will allocate. Another advantage of dry plaster is that it allows you to perform finishing works quickly, efficiently and inexpensively, and also without any problems and additional costs, to lay between the drywall sheets and walls those communication cables in which only it is necessary.
The lack of dry plaster is its instability to moisture and dampness. Therefore, it can not be used for exterior finishing, and when it is installed, no wet finishing mixes are used. With prolonged exposure of moisture to it, it is stratified and swollen - the cardboard lags behind the gypsum base, coming into complete disrepair. Therefore, you should take care of this in advance, for example, by painting a dry plaster with oil paint based on casein glue. However, do not be too hasty with this, because according to the rules, painting of drywall with any colors, and gluing it with wallpaper is done not earlier than three days after the end of the cladding.
Be sure to monitor the level of humidity in the room where you made the finishing work with dry plaster. Then you will forget for a long time what repairs are and will enjoy a neat and cozy home.
We hope that this short article was useful for you in the sense that you learned something new for yourself about what it is - dry plaster, where it is applied, and also about the advantages and disadvantages of this modern finishing material. Next, we suggest that you look at a small video clip showing the issues we have examined clearly.
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