Two-level plasterboard ceilings - what is this and what is it made of?
An ordinary suspended ceiling is simply a sheet of plasterboard fixed horizontally on the lower surface of the floor. For the installation, various profiles are usually used, as well as fasteners by which the elements forming the frame are not only rigidly fixed to the ceiling, but also perpendicular to each other. Is this enough to get a perfectly flat surface? Undoubtedly. Is it possible to call such a ceiling a design decision? Hardly.
To create a unique style of the room, you need not only quality wall and floor finishing, but also a well-designed interior, but at the least, two-level gypsum board ceilings, that is, made in steps. And if to them still to add the lighting elements located by ledges on the erected construction, the room will receive exactly that unique style, which so many masters seek, without any special, however, success.
Properties of the structure can be given different, even such as water resistance, despite the fact that the material is made on the basis of gypsum. The fact is that before there was only one kind of drywall, but it was still when this material was just beginning to be developed. Today, you can name at least 4 types: the same, ordinary, then, moisture resistant, then fireproof and, finally, universal sheets, combining resistance to fire and moisture at the same time.
These materials differ in color: ordinary plasterboard - gray with a blue inscription on the back plane, water resistant - green with a blue inscription, fireproof - gray with a red inscription, and a universal one - green with a red marking. As you can see, everything is simple, it's enough to carefully examine the sheets of material and take exactly what you need.
What is the frame of the suspended ceiling formed from?
As already mentioned, drywall is attached to special metal profiles, while they are completely hidden under the cover sheets, only the screws are visible from the outside, and even then only until they are covered with putty. However, what is included in the structure of the framework, what elements does it collect?
Forming types are only two - they are guides made in the form of the letter P, which are necessary for laying the ends of the ceiling profile in them, which has a C-shape and, in fact, exactly constitutes the structure of the frame. The guides have holes with a diameter of 8 millimeters for fixing the profile to the wall, but the framing elements do not need holes in the holes, but more on this later.
Very important details for composing several levels of the ceiling. For the most part, elements are used to connect profiles perpendicular to each other, two-level and one-level. The first are needed to go to a different level of the ceiling, and the second - as a crosshair for four profiles that converge at right angles in one plane.
Very often one-sided elements for connection at right angles at different levels are in demand, as well as rotary fasteners of the same kind that can be used for mounting vertical plasterboard plates. To fix the frame on the base, in addition to profile guides, anchor suspensions are used that can withstand up to 25 kilograms, the step between them directly depends on the severity of the structure.
As a rule, 1 square meter of suspended ceiling weighs about 13 kilograms.
How are multi-level ceilings made of plasterboard?
First of all, let's define that there are two-level ceilings, and there is such a thing as a two-level skeleton. It's not the same thing. In the first case, we get a difference between the levels of the layout of drywall sheets, and in the second we come across the designation of the method of fixing the bearing profile to the main one. Actually, we will need both, the first, as a result, and the second, as a means of achieving it.
So, we need: a string shackle device that will allow us to perform an accurate base marking, a construction knife, a roughing plane, a hacksaw, a drill( better combined with a screwdriver) with a milling cutter, a grinding device, a puttying tank and putty knives. Well, and, of course, drywall sheets, as well as profiles and fasteners, along with screws self-tapping, piercing and drilling.
First we measure the ceiling and design the ceiling, which we want to see in the end. We make markings on the ceiling, where the main profiles and guides should pass, and also determine the location of the anchor suspensions. The load-bearing profiles are mounted in steps of 50 centimeters when stacking sheets across and in 40 centimeters increments when the sheets are placed along the profiles of .If the base is concrete, the pendants are mounted with dowels, or anchors, if the surface is wooden, enough screws will be enough. For dowels, holes are drilled with a perforated drill.
When the suspensions are fixed, we install profiles, constantly using a level of at least 1.2 meters in length, or a laser device of the same purpose. The framework can be single-level or, as we have already said, two-level. In the first case crosshairs are used for perpendicular connection of profiles in one plane, and in the second we need two-level fasteners. The profiles are fixed with self-tapping screws, which easily pass through a thin metal.
Guides are installed around the perimeter of the room to fix both the main and load profiles. When the first level of the carcass is assembled, to it, but not to the plasterboard, we begin to attach the second-level frame, giving it the shape that was planned. To get arcuate curves of the profile, we make the notches on it, turning by 90 degrees, so that it really becomes a C-shaped one. We can assemble multi-level ceilings from plasterboard with any number of ledges.
When the entire frame is completely assembled, we fasten the facing sheets to it, but it is not necessary to drill them in advance, but it is desirable to topple and make holes in a timely manner. After sawing, the edges of the sheets are processed by a roughing plane, we drill the holes for the blades with a drill bit for the drill.
We do not heat the screws during installation, but do not leave the speakers either. The joint of the sheets should fall exactly on the center of the profile, so that the screws enter at its edges, at a sufficient distance from the seam. After the installation is pasted to the joints serpian and shpaklyuem.
