What is the metal profile called? Profile for drywall. Sizes and types. Selection advice. Features of the structure of PN
modern building does not do without drywall. Cheapness, durability, ease of installation brought it to the same level with the most common materials. But the use of drywall requires a certain level of knowledge about the installation and the materials used in this area of construction.
Peculiarities
Drywall allows you to create a wide variety of designs. Figured walls, arches, niches, dropped ceilings and much more can be designed thanks to this material. For example, when creating a partition in a room, drywall has many advantages - relatively low weight, lower installation and material costs compared to brick or gypsum blocks make it almost indispensable. Also, drywall, with proper installation and operation, is not inferior in strength to many materials.
There are alternative ways to install drywall, such as, for example, gluing to walls. But the most common is the fastening of the GKL to the profile structure. It is from the profile that all kinds of designs are formed - from the simplest to the complex, which are more reminiscent of a work of art.
Hardware stores offer a large assortment profiles. Each element is designed only for a specific function in the framework. If they are not used for their intended purpose, then the whole structure will not be strong and durable. Knowing the features and dimensions of metal profiles allows you to create projects and drawings for the design of an apartment or any other room in advance.
Purpose
The main stage in the creation of a drywall construction is the construction of a frame. Based on what exactly is being installed (arch, partition, and so on), certain requirements are imposed on the frame. For example, for suspended ceilings the profile frame must withstand heavy weight loads. When mounting the partition, the frame must be resistant to deflection.
Before you build a frame, you need to decide on the type of planned structure. If this is a curly structure, then profiles designed for bends are used. Here it is also necessary to take into account how resistant the structure should be to accidental impacts or large weight loads during external influences. The location of arches and ceilings is inaccessible during the normal movement of people around the room. In the frame of such products, there is no need for additional strength of the profile assembly. In contrast to these products, a curved wall must withstand accidental overloads.
To meet specific design requirements, different forms profiles. Considering the purpose of the product, the material is selected. Reliability, durability and functionality of interior parts are highly dependent on correct selection profile for its intended purpose. An important role is played by the selection of fasteners and connecting elements. They, like profiles, have their purpose. Connecting elements profile structures cannot be neglected. This will affect the stability and evenness of the surface. Additional structural details, as well as a profile, have a strictly defined purpose.
Each type of self-tapping screws performs its role in the design. Attention should also be paid to this. The use of self-tapping screws for other purposes can lead to fragility of the structure and even to a danger to human life, since the mounted product may fall. In the selection of screws and other fasteners, their length plays a role. For example, the use of self-tapping screws longer than the required length will cause unnecessary costs. Self-tapping screws with a shorter length will affect the strength of the frame and its stability.
Types and sizes
In the manufacture of the profile, a cold-rolled sheet of metal is used. From above it is treated with zinc. Such production makes the metal profile reliable and durable. The galvanized surface protects against corrosion, which allows the profile to for a long time be in operation.
Designing a frame for a drywall product is not a very difficult task. The design contains perpendicularly directed parts located in a horizontal or wall vertical plane. These elements are called bearing and rack. In addition, there are guides and starting parts of the structure, which are located perpendicular to the carriers. Choice suitable material is also an easy task. This helps to familiarize yourself with all its possible types.
The rack profile is in the greatest demand. In the marking adopted by Knauf, they are referred to as "CD". Profile "Giprok" is marked "PP". The dimensions of these elements are chosen so that there is almost no waste during their use. In addition, their size allows you to optimally spend space on the elements being constructed. This profile can be from 2.5 to 4 m long. Width - 60 mm. The ledge of the shelves is 2.7-2.8 cm.
The guide profile "UD" or "PPN" is designed for fastening the load-bearing parts of the frame. During the collection of suspended ceilings or wall cladding, guides are mounted around the entire perimeter. It is more convenient when they are perforated with holes. Due to the fact that during installation they drill through the profile, this process will be easier. They are made 3 m long. Metal thickness - 0.55 mm, height - 2.8 cm, width - 2.7 cm.
Profiles "UW" or "PN" refer to guides and are used for mounting partitions. Their purpose is to make it possible to make a different thickness of the partition if necessary. These elements are produced in different widths. Dimensions: length - from 2 to 4 m, ledge of shelves - from 3.4 to 4 cm, width - 4.2, 5, 6.5, 7.5, 10, 12.5, 15 cm.
Profiles "CW" or "PS" are used for partitions as rack-mounted when forming piers. Their width should match the starting one. In profile good quality there are holes for the possibility of laying communications. Giprok produces this element with a stiffener, which creates a curved edge. Length - from 3 to 4 m, the ledge of the shelves - 5 cm for Knauf, 4 cm for Giprok.
The arched profile is made curved. The surface may have different curves. When performing surfaces of a specific shape, it is precisely such flexible types of profile that are used. In places of bends and curvature of the plane, the installation of frames is carried out by these elements. If necessary, they can be replaced with other profiles. At the same time, cuts are made at small intervals. Such a replacement complicates the installation process and can only be an exception in unforeseen circumstances.
In addition to profiles, other parts are used when mounting the frame. Components and accessories for plasterboard products are very diverse. But there are much fewer of them for free sale, since the assembly of the structure can be carried out using a small amount from the entire range, the rest of the parts remain unclaimed.
A two-level connector for a CD profile is used to connect two profiles at different levels. The need to use this element is determined by the perpendicularity of the profiles. Such connectors are sold flat, but before installation they must be bent with the letter P.
A single-level connector for a CD profile, or “crabs” is a fastening that is necessary when profiles are installed at the same level. As in the case described before, the profiles are set perpendicular to each other. Fastening them with self-tapping screws is necessary only if the load per square meter is more than 20 kg. For a smaller load, it will be enough for a self-tapping screw on both sides.
A direct suspension for a CD profile is used for the manufacture of a plasterboard ceiling. It is attached directly to the bearing surface. As well as a two-level connector, the suspension is sold straight, and during installation it is necessary to form the letter "P". The standard length of the suspension is 12.5 cm. Suspensions are also produced in other lengths - from 7.5 to 30 cm. The suspension is designed to hold a mass of up to 40 kg.
Anchor suspension is also called a suspension with traction. It is used in the same way as the straight one to attach the CD profile to the bearing surface of the ceiling. The production of such a suspension is due to the fact that the suspended ceiling can be much lower than the length of the suspensions provided. When assembling, the anchor hanger is installed inside the profile, then the thrust is drawn into the hole made in the spring. The rod has a length of 25, 50 and 100 cm. The weight that such a mount can withstand is 25 kg.
An extension for a CD profile, in other words, a longitudinal connector, is necessary if the length of the profile is less than the required one and it must be increased by connecting an additional profile. The connector is inserted at the end of the profile, taking into account that its protrusions must be directed in the same way as the protrusions of the profile. After the junction of the two profiles at the location, in order to stiffen the connection, a self-tapping screw is screwed on each side.
Corner connector for CD-profile is intended for connection of profiles located in T-shape in one plane. Completely replaces the crab connector. Also, to assemble the frame and attach drywall to it, various types self-tapping screws.
Self-tapping screw TN 25 for metal, which are necessary when attaching drywall to a profile structure. They come in different lengths with a small thread pitch. Self-tapping screws of the TN 25 type (length 25 mm) are used, and in cases where several sheets are attached, self-tapping screws 35-40 mm long are used. If for some reason drywall is attached to a tree, self-tapping screws with a large thread pitch are used. They are called wood screws. For one layer of drywall, parts with a length of 35 mm are taken.
Self-tapping screws LB 9, 11, 16 and LN 9, 11, 16 - drilling, which are used when attaching the profile to the connectors. The numbers in the marking indicate the length of the screw in millimeters. The smallest length of these screws is 9 mm. But they have disadvantages when installing drywall products. For example, a short length is inconvenient when twisting. The high cap prevents the drywall from being tightly connected to the profile.
Self-tapping screws with a press washer are more practical when attaching profiles to each other and with additional elements. Such self-tapping screws are used on all surfaces. There are, like the previous ones, piercing and drilling type. They have a wide range of lengths - 9-100 mm, if necessary, even longer lengths can be purchased. The most popular self-tapping screws are 16 and 14 mm. They are used in almost all structures made of drywall and profiles.
Self-tapping screws with plastic dowels are used when mounting UW or UD type profiles on walls. Nylon dowels are optimal when using such fasteners.
Anchor wedge is used for attaching hangers to load-bearing structure for achievement High Quality connections. Such fastening has a very long service life, is not subject to drying out over time, and is resistant to corrosion. When mounting a false ceiling, saving on these elements is not advisable, since strength and reliability are the conditions necessary for any fastening. Instead, you can use a ceiling dowel.
The dowel-nail is used when fastening the profile structure to the bearing surface, such as brickwork, concrete wall or blocks. Pick up such mounts with heads in the form of fungi. A diameter of 6 mm and a length of 40-60 mm are sufficient. If necessary, when the structure needs a stronger connection to the bearing surface, use a larger diameter or length. The convenience lies in the fact that they are clogged with a hammer, there is no need to screw them in.
It is best to start work by purchasing a wide variety of types of fasteners. This will allow you to connect all possible elements that are used in the work. When faced with non-standard situations, for example, a void in the supporting structure or additional fastening to other parts of the structure, it is often necessary to resort to the most unexpected methods, supplementing existing fastening schemes. This helps the presence of self-tapping screws or anchors of greater or lesser length. Also, when using any rods or extension elements instead of hangers, it is easier and more reliable to use anchors and their analogues.
How to calculate the required amount?
GKL installation is carried out in two ways:
- fastening to the mounted frame;
- gluing to the bearing surface with adhesive solutions.
The first method is the most common, despite the large financial costs and usable area. The reason for this is that the voids remaining behind the drywall allow you to place what they are trying to remove from view (sewerage, water pipes, electrical wiring and the like). But the main task before starting work in this case is to calculate the required amount of material.
The calculation of the guide profile comes down to dividing the entire perimeter, where it will be located, by the length. Then this number is rounded up so that there is a margin.
In this calculation, two recommendations should be followed:
- The calculation is based on the size of the room, trying to choose such a length of the profile guides in order to minimize the length of the trimmings.
- Calculate the amount and add 7-20% of the total material. Such an increase makes it possible to compensate for small trimmings that would have to be fixed in separate pieces instead of the whole.
The calculation of the bearing profile is the most complex of all calculations in drywall construction. In this calculation, it is necessary to take into account the design of the frame in full. For ceilings, the profile is calculated from the ratio X \u003d (A / W + 1) * (B / 3) * K. carrier profile for the wall cladding frame, it is calculated using the following formula: X \u003d (R / W + 4) * K. If the 3-meter height of the wall is exceeded, this formula is converted into a different form: X \u003d ((R: W + 4) * H / 3) + P * K.
The letters in these formulas stand for:
- X - the number of profiles 3 m long;
- A is the length of the plane (m);
- B is the width of the plane (m);
- P is the perimeter (m);
- H - wall height (m);
- TO - correction factor(for area 10 square meters and less corresponds to 1.275; for an area from 10 to 20 square meters has a coefficient of 1.175; more than 20 square meters, the area has a coefficient of 1.075);
- Ш - the step through which the supporting profiles are installed, it is equal to 0.4 or 0.6 m and depends on how much the structure will be subjected to the pressure of the drywall weight. For a sheet laid in one layer, it has a step of 0.6 m. Two layers have a profile step of 0.4 m. The design, in which moisture-resistant drywall is used, has a step of 0.4 m.
The number of suspensions is calculated with a simple action, based on the number of carrier profiles. Here they take into account the fact that they are located on the profile at a distance of 0.6 m. If the length of the profile is not divided by 0.6 m, then the number of hangers is reduced in order to place it evenly over the entire plane and length of the profile. The approximate number of hangers is calculated based on the total length of all profiles. By the same principle, a suspension is attached every 0.6 m.
To do this, you need to take into account certain points:
- The calculation must be based on the fact that the standard dimensions of drywall sheets are 1.2 by 2.5 m or 1.2 by 3 m.
- Before finishing the room, it is best to make a sketch by which to determine the required surface area of drywall. It is also necessary to distribute drywall sheets along it in such a way as to optimally use the material and reduce the amount of waste.
- For finishing surfaces that are complex shapes, it is calculated total area all planes and bends, taking into account the recesses and protrusions. 10-15% is added to this area. Then it is divided by the area of one sheet of the selected size and rounded up to a whole number.
The calculation of the required number of fasteners is the simplest task, which is carried out from the already calculated material. The number of self-tapping screws for fixing drywall is calculated based on the fact that about 100 pieces go to each sheet. "Crabs" are required for 1 piece for each connection of metal structure profiles. Screws with dowels are calculated from the fact that 1 piece is needed for every 0.4 m for the guide profile, and 2 pieces for one hanger are required for attaching hangers to the supporting structure.
In conclusion, it can be added to the calculation that the purchase of materials should be done with a margin. This is due to the fact that during installation, damage to materials or loss of self-tapping screws is possible. There may be small errors or unaccounted moments in the calculations. The goods purchased in the store may have an imperceptible deviation from the quality presented. For example, drywall may have cracks that are not visible under the sheet of paper. Some of the self-tapping screws may be bent, which will make it impossible to screw them in with a screwdriver. Self-tapping screws can come across with blunt ends or with a missing slot in the head. These and many other nuances can cause a lack of material and, as a result, time-consuming installation of the structure.
How to install?
For the installation of drywall construction will require the following tools: screwdriver, drill, building level, fasteners (dowel-nails, self-tapping screws), scissors for metal and profile cutting, tape measure, screwdriver, knife for cutting drywall sheets. At facing works loss of usable area must be taken into account. Therefore, it is necessary to design, for example, wall sheathing as close as possible to the bearing surface. This rule is used in all possible cases when working with drywall. Begin work with markings on the walls adjacent to the place of sheathing. Make markup, resorting to the help of the level.
The installation of the profile is very simple. According to the markup where the carrier profile will be attached, guides are mounted. Next, the suspensions are attached along the line of the planned installation of the profile previously drawn on the wall or on the ceiling. When performing this operation on the crate, the profile step cannot be neglected. Otherwise, the place of joining of drywall sheets will not be located on the profile area, which is a gross violation of the installation technology.
The distance between the suspensions varies from 0.5 to 1 meter. It depends on the desired strength of the structure. If this is provided for by the project, then after assembly, engineering communications, thermal insulation and sound insulation are laid in the profile structures and the box.
When installing drywall assembled frame use a screwdriver, thanks to which all the work will go faster and easier. The cladding process is nothing more than leveling the wall. Therefore, it is necessary to carry out a sufficiently tight fixation of the GKL on the profile. Much attention should be paid to the edges of the GKL cut, which must be made as even as possible. In those places where the cut sheets are joined, it is necessary to make a chamfer, the angle of which is 45 degrees. When puttying, the chamfer makes it possible to make the joints invisible. Drywall is fixed with self-tapping screws at a distance of 20 to 25 cm. Where windows or doors are installed, a profile is placed along the opening. This makes it easy to fix drywall. It is advisable not to use wooden beam How auxiliary element, as it can damage drywall when it dries.
For the construction of arches, use curved drywall or make it yourself from a straight sheet. An even sheet can be soaked, creating a moist environment for a while, and put it on a template, according to which the bend is repeated. Another option for bending sheets is to make cuts on the facing paper. In this case, take into account the radius along which the drywall will go. The steeper the bend, the more slots are needed on the sheet.
These recommendations are sufficient for the construction of plasterboard structures of any shape and complexity. When creating a project, it is important to think carefully about the shape and dimensions of the desired product and calculate the required material as accurately as possible.
When performing the installation of GKL for the first time, do not neglect the technology. It is necessary to strictly observe the distance between the profiles, especially when many whole sheets are mounted. It must always be remembered that deviation from straight lines when mounting the frame will lead to a convexity or concavity. Great attention should be paid to the strength of fastening. Floor slabs have voids, so anchors are used for strong fastening. Foam concrete walls are not able to hold fasteners. Such connections should be avoided or additional measures should be taken to ensure the strength of the hangers.
For fixing any interior details, special types of fasteners are used. This allows you to securely attach to drywall Appliances or other items like Wall lights, TVs, hangers, mirrors and so on. In no case can you fasten them to drywall with self-tapping screws. This will not give a reliable connection, except if the self-tapping screw passes into the profile through the sheet.
You can also pay attention to the fact that suspensions do not always satisfy the required deflection stiffness. In this case, additional structures are used. It could be suspension reinforcements own production or the purchase of any additional parts from the assortment of the store. Self-mounting can be made from a carrier profile or guide. It all depends on your ingenuity.
It must be remembered that at the joints, drywall must be on the carrier profile. If this is neglected, then little effort sheets can move relative to each other, which will cause a crack in the finishing putty. In those places where greater deflection strength is required, additional profiles are installed. Alternatively, you can use a double layer of drywall or moisture-resistant drywall, which has greater strength compared to the ceiling.
In order to use the minimum usable area of the room, place the sheets closer to the bearing surface. You can resort to a strobe device at the profile attachment points. This option is possible, but has disadvantages, such as the need more time installation and more required effort from specialists. As a rule, in these cases they resort to adhesive compositions, which will not cause the voiced disadvantages.
It should be noted that drywall is sensitive to the humidity of the room in which it is stored. To avoid bending the sheets, they must be laid on a flat floor and stored only in this position.
In damp and damp rooms, when installing drywall, remember that it must be well protected from moisture. So, for example, in the bathroom, drywall protects tile. In this case Special attention care must be taken to ensure that water does not enter the space between the bearing surface and the drywall. When performing finishing work on drywall, it is necessary to prime the entire surface well. This will promote good adhesion of the putty and increase moisture resistance. When puttying, you should also not neglect laying a construction mesh on the seams, or in other words, sickles. This will give greater strength to the puttied joints.
When installing drywall on a profile, it is necessary to check for protrusions or protruding parts. This can cause drywall to break. It is not recommended to use drywall in places where the temperature often changes (street, loggias, balconies, and so on).
The bearing guide profile does not have to be cut completely in those places where an angle is needed. In order to form it, it is enough to cut the edges of the profile to an angle and bend to the desired shape. It also helps in the formation of a stable angle, if you fasten the trimmed edges of the profile together with self-tapping screws. If the profile needs to be bent at an angle of less than 90 degrees, and the edges of the profile do not allow this, their excess parts are trimmed.
IN complex structures if high accuracy of drywall corners is required, sheet milling technology is used. For this, a shaped milling cutter is used. With the help of such a tool, you can cut grooves of any shape and holes (oval, circle, rhombus, and so on). Using shaped cutters, not only the installation of drywall itself is accelerated, but also puttying work. Milling technology requires large financial costs for equipment, but is very beneficial for large volumes of work.
For convenience, when installing drywall, it is better to use a magnetized screwdriver head, since the screwdriver takes different positions and the self-tapping screw falls without support. In some situations, it is impossible to hold the screw with the other hand. In some cases, drywall products are attached close to the wall, so it is not possible to fix the sheet. In order to solve the given problem, profile frame assembled without fastening on the bearing surface. Then drywall is attached to it and later assembled on the bearing surface where its location was planned.
If the wiring passes through the voids of the drywall and exits on top of the sheet, then it must be fixed on it. This will avoid many difficulties after the assembly of the entire product due to the wire falling back into the cavity of the plasterboard structure. Drywall sheets for sale different thickness. 9.5 mm sheets intended for ceiling cladding are highly discouraged for use on partitions. If you overestimate the length between the profiles on the ceiling, downward deflection of 9.5 mm sheets may occur.
Drywall has poor sound insulation, so if you want to make it reinforced under the guides, before attaching the bearing surfaces, put a damper tape.
To create structures from gypsum boards that imply “dry” leveling of the surface, as well as performing a camouflage function for communications and wiring, a frame cladding system is used. The basis of the frame can be wooden blocks of suitable thickness, but it is much more advisable to use metal profiles for attaching drywall.
What is this article about
What is a metal profile
Frame profiles are thin metal products that are made from cold rolled galvanized sheet, aluminum or plastic.
Usually they have a T-, G- or U-shape with cavities. There are profiles for drywall:
- corner;
- flat;
- In the form of a channel.
They are used as load-bearing elements for gypsum boards for:
- Creation of level ceilings;
- strengthening drywall edges;
- the formation of the "skeleton" of curvilinear structures, arches;
- installation of partitions;
- sheathing of walls, ceilings with significant differences on the surface;
- internal wall or ceiling insulation, soundproofing
The quality of all types of drywall profiles is established by GOST and TU standards.
A huge number of companies are engaged in the production of long lengths, in particular such well-known ones as Knauf and Giprok.
There are many types of metal profiles, in which it is very important to understand and be able to choose them correctly, otherwise, when installing “from anything”, an uneven, fragile surface is obtained, or, on the contrary, it is inappropriately rigid and excessively expensive.
Main types of profiles
Products are classified into the following types:
- Guides or starting;
- Ceiling rack;
- Rack wall/partition;
- Reinforced;
- arched;
- Beacon;
- Corner - protective and plaster;
- Guides.
Guides
Guides are types of drywall profiles that form a frame frame around the perimeter. They are attached directly to the base coat and serve as a fixing base for rack-mounted wall and ceiling lengths. Can be made from steel or aluminium.
Starting ceiling guides for drywall - PPN or in the European UD marking. CD profiles for drywall are inserted into their grooves. They have smooth backs and a profiled shelf. Can be with factory holes for fasteners.
The main parameters of the yud profile:
- Length - 3 m
- Shelf width - 27 mm
- Length of each back - 28 mm
- Thickness - 0.4-0.55 mm
UW (PN) - wall, partition guides for drywall. Their purpose is to support CW. UW, available in a wide range of sizes:.
- 50×40 mm
- 75×40 mm - used as a jumper in frames
- 100×40 mm
The backs often have holes for 8 mm dowels.
Length - 2.75m, 3m, 4m, 4.5m and 6m
SE profile for drywall, sometimes also used to create multi-level ceiling structures.
Ceiling rack
Ceiling - used for the manufacture of horizontal parts of the ceiling frames. Each end shelf has 3 stiffening ribs. Mounted on hangers different type and enter the UD grooves, to which they are fixed, after leveling with the help of suspension threads.
Marked as CD.
Standard size sd - width 6 cm, back height - 2.5 cm. Running length - 3 - 4 m, but they also come in 2.75 m and 4.5 m. Steel thickness - 0.4-0.55 mm.
Rack wall/partition
Rack carriers - this is the name of the channels, the upper edge of which has C-shape. They are mounted in the GKL subsystem, as racks, the main "skeletal" elements of a vertical or jumper type, and also serve as a cavity area for laying heat and sound insulating materials, laying communications. European marking CW, Russian - PS.
The PS is fixed along the length after 40-60 cm to the U-shaped suspensions with the help of self-tapping screws and to the guides - with dowels.
Standard dimensions of the rack profile for drywall:
- Shelf length - 5 cm
- Back width - 50 mm, 65 mm, 75 mm, 100 mm
- Total length - 2.75 m, 3.5 m, 3 m, 4 m, 4.5 m, 6 m
But at the same time, the actual dimensions of the backrest may differ from those indicated by 1.5-2 mm.
As a rule, the racks have three longitudinal ditch sections along the entire length - the one in the middle is located at the junction of the GKL sheets, on both sides of it - indicate self-tapping centering.
Reinforced
Reinforced - UA, are used as racks of door frame systems, as well as in the formation of a skeleton for significant load-bearing loads, so the technical characteristics of the profile for reinforced type drywall allow fixing with dowels, things with significant weight - shelves, cabinets, canisters, TVs, etc. Further. They have a significant thickness - 2 mm, increased resistance to corrosion.
The main dimensions of the reinforced profile for drywall:
- Length - 3 meters, 4 meters, 6 meters
- Shelf height - 4 cm
- Backrest width - 5 cm, 7.5 cm, 10 cm
corner
Corner - PU, mounted on the corner parts of structures and are divided into:
- protective, 3 meters long and sections - 25 × 25, 31 × 31 with a thickness of 0.4 mm and 31 × 31 with a thickness of 0.5 mm
- plaster corner profiles for drywall with mesh, plastic, 3 meters long and 35×35
Corner elements simultaneously perform a protective role and facilitate plastering, due to the perforated coating, as well as mesh, as in the second version.
Beacon
Beacon profiles - PM, types of profiles for drywall, used as a level guide when plastering surfaces. They are made of galvanized metal - steel or plastic, have high anti-corrosion properties. The length of the PM is 3 meters, their standard sections are 22 × 6, 23 × 10, and also 62 × 6.6.
This element is almost indispensable in places where perfectly smooth plastering of GKL is required.
Arched
Arched profiles for drywall - flexible galvanized elements made of PP 60×27. Their sphere is the creation of curvilinear elements, arches, columns and so on. They can have a concave shape (with a length of 3 meters, a bend radius of 0.5 m) or a convex shape (with a length of 6 meters, a bend radius of 1 m).
Instead of them, ordinary PPs are often taken, supplying them with cutting, using scissors for metal, along the entire length to facilitate bending. However, it is better for beginners to start with specialized elements.
From what was said earlier, it is clear that for each part of the frame, there are different types of drywall profiles, which also have a wide size range. But which profile to choose from, it would seem, completely identical in size and purpose?
- By coverage. The most popular channels are galvanized. If you look at what the coating consists of in the manufacturer's technical data sheet or product extract, you will notice that some of them are even less than 30% zinc, although a truly high-quality profile contains up to 99% of this substance.
- Painted. Painted long lengths in construction are very popular. It would seem that paint helps to enhance protection. metal product, but it is worth taking a closer look at what it is actually intended for. Perhaps it was applied to mask defects. A poor-quality coating will usually peel off during installation.
- By thickness. The metal thickness for a standard design can be 0.5 mm. However, for frames that require greater base strength, it is recommended to choose large parameters. To do this, initially determine what function the frame will perform and how much payload it involves.
- By perforation. Perforated knurling is often performed by unscrupulous manufacturers, only to make it difficult to visually determine the thickness of the profile.
- By hardness. In high-quality, durable products, stiffeners are located along the entire length.
If the channel bends when compressed in the hand, it is better to take a stiffer one.
Knowing how to choose the right frame components is half the success in creating a reliable, durable structure.
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Types of drywall profiles and methods for their installation
Greetings, comrades! Today we have to find out what drywall profiles are, for what purposes they can be used and how they are mounted. In addition, we will analyze a couple of basic structures that are the basis of almost all types of interior decoration premises with the help of GKL.
Why profile
As you know, for the installation of frames and battens under the GKL, not only galvanized profiles are used, but also. Which material is better?
The answer is quite clear: profile. Arguments at your service:
- Galvanized steel lasts indefinitely regardless of atmospheric humidity. Of all the negative impacts, the steel profile is only afraid of corrosion, from which it is reliably protected by a zinc coating layer;
- Galvanization is not afraid of insect attacks, which in some 10-15 years are quite capable of destroying or rendering the wooden frame unusable;
- The geometry and dimensions of the steel frame elements are unchanged, while the bar will lengthen and warp with each seasonal increase in humidity. Changing the shape of the frame will predictably cause cracks between the skins or even right along them.
GKL, however, can be mounted on even wooden walls without crates, thereby reducing the misuse of the usable area of the room. It is also used for leveling walls from mineral materials on glue beacons. In this case, the sheet is glued onto a spot-applied gypsum adhesive or any leveling gypsum mixture.
Announce the entire list
Titles
What types of profiles can be found on sale?
For the assembly of frames and crates, only 4 of their types are used:
However, if desired, two more varieties can be found in hardware stores:
- Arched (flexible). It is able to bend in an arc with a small radius, forming vaults of arches or bends in the edges of multi-level ceilings;
- Angular. A perforated galvanized corner is laid under the putty to reinforce the outer corners of walls, door and window openings.
The corner profile is made not only from galvanization, but also from PVC. Plastic reinforcing corners are often supplied with a reinforcing mesh.
In the future, we will turn our attention, first of all, to those types of drywall profiles that are used to assemble rigid frames and battens - CW, UW, CD and UD.
Functionality
How do the types of drywall profile and their application compare? To answer this question, it is enough to reread the titles.
- rack used for mounting vertical racks when assembling wall frames and. It can also be used as jumpers between racks, reinforcing the rigidity of the frame;
The main element of the wall frame with niches is the UD rack.
- guide mounted on permanent structures (floor, adjacent walls and ceiling). The edges of the racks are inserted into it;
- Ceiling and ceiling guide are used in a similar way when installing a false ceiling batten. With the same success, they can be used to level walls with large (over 50 mm) blockages, bends and drops.
Racks have sufficient rigidity to withstand bending loads, but the ceiling profile, due to the low height of the side walls, needs additional fixation. For this purpose, suspensions are used - straight and adjustable.
With insufficient length of the ears, two straight hangers can be connected in series, thereby increasing the maximum distance from the main structure to the cladding.
Dimensions
What are profile sizes?
First, let's get acquainted with the standard sections of the main varieties:
- All ceiling profiles for drywall have the same wall size - 60 and 27 millimeters;
- Ceiling guides are compatible with them - 27 and 28 mm, respectively;
- Rack-mounted have side walls 50 mm high, but the width (bottom wall) can be 50, 75 or 100 mm;
The wider the post, the greater its rigidity in relation to the bending load.
- The height of the side walls of the UW guides is 40 mm, the width of the guide corresponds to the width of the uprights - 50, 75 or 100 mm.
With length, everything is somewhat more complicated. Theoretically, according to the assurances of the manufacturers, all varieties are produced with a length of 2.5 to 6 meters inclusive.
In practice, the range of products in stores is much smaller:
- For guides and ceiling guide profiles, the standard length is 3 meters;
- For rack and ceiling - 3 and 4 meters.
If the maximum length of the ceiling profile is insufficient for your purposes (that is, less than the length of the room or the height of the wall to be leveled), so-called straight connectors are used to splice products of shorter length. In addition to them, on sale you can find cross connectors - "crabs".
Price
How much do galvanized elements of crates and frames cost? I will give the current prices (November 2016) for the Leroy Merlin chain of stores.
The actual cost depends not only on the section and length of the profile, but also on the thickness of the metal from which it is made. Galvanized products with a thickness of 0.55 - 0.6 mm are indicated in the company's price list with the words "premium" or "strong" and cost the buyer about one and a half times more than "economy" class profiles (0.4 mm).
Installation
So, we have studied the classification of profiles and their purpose. It's time to move from theory to practice.
General rules
Here are a number of installation rules common to all types of frames and crates:
- Can be used to cut galvanized metal scissors only. Abrasive cutting with a grinder with a circle for metal is highly undesirable. The fact is that heating the cut area leads to the burnout of the anti-corrosion zinc coating, and the edge of the frame element remains defenseless against rust;
- Guides, guide ceiling profiles and suspensions are attached to brick, stone and concrete surfaces dowel-screws. The size of the fastener depends on the strength of the surface: for heavy concrete a size of 40x4 mm is enough, and for loose aerated concrete or shell rock it is better to increase it to 80x8;
- When fastening the guides, the wall, ceiling or floor is drilled with a puncher directly through the profile pressed against them. Then a dowel-screw is inserted into the drilled hole and twisted with a screwdriver. Such a mounting scheme will save you from the problem of matching the holes in the profile and the capital structure;
- The step between the attachment points of the guides should be about half a meter;
- Suspensions along the profile on the ceiling are mounted in increments of 60 cm, and on the wall, where the suspension experiences a minimum load - 80;
- For attaching rails to wet rooms It is strictly forbidden to use wooden chopsticks. In an atmosphere with periodic fluctuations in humidity, they quickly dry out and fall out of the holes;
- To connect the profiles to each other or with suspensions, self-tapping screws for metal 9 mm long are used. Self-tapping screws are screwed in only with a screwdriver: it is almost impossible to connect two profiles with your own hands, using a screwdriver;
In the photo - a corded screwdriver, which I use to assemble drywall structures.
- The standard step between racks or crate elements is 60 centimeters: this is exactly half the width of the drywall sheet. The step is measured not between the edges, but between the axes of the frame elements. In this case, the seam between adjacent sheets will fall exactly in the middle of the profile;
- If the structure during operation will experience significant loads (for example, when it comes to a wall in a narrow hallway), the step between the profiles can be reduced to 40 or even 30 cm. The main thing is that the width of the plasterboard remains a multiple of this step;
Reinforcement of the partition frame can be achieved without increasing the thickness or reducing the pitch of the posts - by inserting a bar with a section of 50x50 into each of them or by connecting the posts in pairs (by inserting one CW into another or simply fixing them next to each other).
- For sound insulation, a damper tape is placed under the guides. It dampens acoustic vibrations, preventing their transmission from the plasterboard to the capital structures of the building;
- Door and window blocks(including metal-plastic ones) are attached to the side profiles and horizontal lintels with self-tapping screws 16-32 mm long (depending on the thickness of the box), screwed through the profile. As a seal and to strengthen the connection, it is worthwhile to first apply a strip of mounting foam to the outer surface of the block.
Suspended ceiling, wall alignment
How to mount profiles under drywall when assembling a single-level suspended ceiling?
Step-by-step instructions - at your service:
- After marking the horizontal line of the ceiling, fix the UD guide along it. You can safely use additional segments of any length, the main thing is that at the junctions with the ceiling CD, the guide is securely fixed;
- Mark the lines along which the ceiling profiles will be mounted, and fix the hangers along these lines;
- Cut (or connect) the ceiling CDs to length and insert them into the guides;
- By aligning each CD with long rule, pull suspensions to its side walls;
- Bend the ears of the hangers towards the ceiling.
If you are assembling a crate to level the wall, all the steps are completely identical to those described above, adjusted for the vertical orientation of the frame.
Partition
How to assemble a partition frame?
In general, this is done like this:
- Using a plumb line, mark the axis of the partition on the ceiling, floor and adjacent walls;
- Fasten guides along this line;
- Mark the position of the racks on the ceiling and on the floor, using the same plumb line;
The markings should remain visible even after the frame is sheathed with drywall. It will help you secure the sheets to the uprights hidden by the sheathing.
- Cut the racks to length and line them up with marks;
- Fasten each upright to the rails on both sides.
A special case is the assembly of a soundproof partition. In this case, we need to decouple the wall cladding on both sides acoustically. The goal is achieved by assembling two independent frames at a small (within a centimeter) distance from each other.
Conclusion
So, we got acquainted with the varieties of galvanized profile under the GKL and with the technique of their installation. As always, the reader can find additional material in the video in this article. I look forward to your comments. Good luck, comrades!
The popularity that drywall has gained in last years, due not only to its high performance.
Simple installation, the basis of which is light and reliable metallic profile- that's what attracts buyers who decide to renovate the premises.
The unification of profile structures is the main factor that made working with drywall accessible not only to professionals, but to home craftsmen. The types of drywall profiles offered on the market are few. This makes it easy to understand the purpose of each element before starting work.
Three types of profiles are based on plasterboard structures of various shapes and sizes:
- planar;
- Wall;
- Arched.
The first type is used for sheathing individual planes (walls, ceilings). Wall profile has increased rigidity. It is used as a supporting frame interior partitions sheathed with GKL. The purpose of the arched profile is clear from its name.
Profiles for ceiling and wall cladding
Considering, it is necessary to dwell in more detail on the structural elements, without which its installation is impossible.
When creating wall and ceiling structures, two types of galvanized steel profiles are used - UD and CD. You will not be able to build a curved surface without an arched profile. All listed profile elements have standard cross-sectional dimensions. The differences between them are only in the length and thickness of the metal used.
UD - guide profile for drywall. It is designed to create an mounting plane and is placed along the contour of the future false ceiling or wall cladding. The carrier profile CD is inserted into it. It forms the frame of the crate to which drywall is attached.
The width of the UD profile is 28mm and the height is 27mm. The length is presented in two versions: 3 and 4 meters. The wall thickness depends on the manufacturer and can be between 0.4 and 0.6 mm.
When deciding which profile is needed for drywall, first of all pay attention to the thickness of the metal. Elements made of thin steel (0.4 mm) can only be used for wall cladding. Thick metal (0.5-0.6 mm) will securely hold the suspended ceiling system.
CD - bearing planar profile. It is used to form the frame and takes on the bulk of the load. This structural element is responsible for the spatial rigidity of the frame and serves as the basis for fixing drywall.
CD profile width - 60 mm, height 27 mm. The standard length is offered by manufacturers in two sizes: 3000 and 4000 mm.
A flat profile is good for everyone, except for one moment: it is impossible to create a basis for sheathing an arched opening from it or curved surface. The manufacturers solved this problem very simply: they took a standard CD carrier profile and made curly cuts and holes in it. This is how an arched profile turned out, the dimensions of which completely coincide with the width and height of the carrier.
Mounting dimensions of the profile for arched drywall: width 62 mm, height 27 mm with a length of 3 or 4 meters. You can bend this profile not only inward, but also outward. In this case, the bending radius should not be less than 50 cm.
Some companies, such as Knauf, offer a ready-made curved convex or concave arched profile designed for domed structures and curved ceilings. This is a regular CD profile molded on the factory equipment.
Partition profiles
They are marked with symbols UW (guide), CW (carrier or rack). Compared to planar profiles, these elements have a greater width and height.
Their main size range is as follows:
- Carrier CW -50/50mm, 75/50mm, 100/50mm, 125/50mm, 150/50mm;
- Guide UW - 50/40 mm, 75/40 mm, 100/40 mm, 125/40 mm, 150/40.
Variations in the length of the supporting rack profile 2.6 - 4.0 meters. The standard guide length is 4000 mm. In terms of cross-sectional shape, partition profiles differ markedly from planar profiles. Two longitudinal ribs are rolled back on them, which increase the rigidity of the wall, and an H-shaped cutout is made in the rack to pass cable lines.
UW drywall guide profiles are used to set the mounting plane of the wall and install the supporting profiles. They are mounted around the entire perimeter of the partition (on the walls, on the floor and ceiling).
The rack profile CW is used to form the frame. It is most often installed in increments of 40 cm so that the seams of the drywall sheets fall on its surface.
Another area of application for reinforced CW and UW profiles is where the highest possible spatial rigidity is required from the frame. Here, their functions remain the same: creating a guide plane (UW) and a carrier batten (CW).
Briefly about the installation of profiles
As we have already said, the guide profile for drywall serves as a "baseline" that determines the plane of the sheathed surface. It is attached to the walls and ceiling with dowels and screws.
To assemble the assembly from the guide and carrier profiles, two methods are used:
- Self-tapping screws ("fleas");
- Mechanical cutter.
The latter method of interconnecting profiles speeds up the assembly process, eliminating manipulations with a screwdriver. However, it has one drawback: it is quite difficult to disassemble such a connection (an analogue of a riveted one) if necessary.
For fastening the carrier profile to a wall or ceiling, straight plate or pin (sliding) hangers are used.
To connect the supporting profiles in the perpendicular direction, single-level or two-level "crabs" are used - rectangular stamped plates.
Estimated prices
Prices for a metal profile for drywall installation vary significantly depending on the size and thickness of the metal. We will consider market offers according to standard characteristics.
Guide profile UD (length 3 meters, metal thickness 0.5 mm) can be purchased for 60-90 rubles. The carrier profile CD of the same length and thickness is sold for 80-130 rubles.
The average prices for a UW (PN) wall guide profile 3 meters long look like this:
- 50x40x0.4 mm - from 60 to 70 rubles;
- 75x40x0.4 mm - 80-90 rubles;
- 100x40x04 mm - 90-110 rubles;
A profile with a thickness of 0.6 mm is more expensive on average by 25-30%.
Estimated cost of rack CW (SP) profile (3 meters):
- 50x50x0.4 mm - 80-90 rubles;
- 75x50x0.4 mm - 100-110 rubles;
- 100x50x0.4 mm - 120-130 rubles.
To create a durable and reliable drywall construction, special profiles are used to ensure the highest quality fastening of drywall sheets. Simply put, profiles are truly the basis of the entire drywall construction. What are the types of profile for drywall? According to experts, such profiles are divided into two large varieties - partition and ceiling. Today we will get acquainted with the varieties of these fasteners, find out their characteristics, and also consider application options in the form of step-by-step instructions. But first things first.
Key varieties of drywall profiles
So, according to their purpose, all profiles can be of two types:
- rack-mount;
- guides.
And the representative of each of the groups must perform its specific function. The marking of the elements described in the article is made using the Knauf technology, they are all made in standard sizes:
- UD - these are ceiling guides;
- CW - rack-mount partition products;
- UW - partition guides;
- CD - ceiling rack.
Figure 1. 1 - UD; 2 - CD; 3 - CW; 4-UW
Note! If you correctly connect elements of different types to each other, then you can get various plasterboard structures, among which different boxes, partitions, false ceilings and so on.
The dimensions and cross-section of these elements are also different.
Variety number 1. Rack ceiling profiles
Many people know the non-susceptibility of suspended plasterboard ceilings to mechanical stress. But at the same time, the profiles must be not only light, but also strong in order to hold the entire structure together with the plasterboard (otherwise, all this may collapse on the heads of the residents). The rigidity of the frame is largely provided by the ribs of the CD-profiles.
These types of profiles are rightfully considered the most popular. In most cases, they are used for finishing / construction work. In view of standard sizes there is almost no waste after working with these elements. It is easy to guess that the main load of the entire structure falls on these profiles. Thanks to them, the reliability and rigidity of the frame, as well as the quality of fixation of drywall sheets, are ensured. The thickness of such profiles is different, but thin products are less reliable, which is obvious, and need large numbers fasteners for installation (we will talk about these elements in more detail later).
As for the length of CD-profiles, it can be from 270 to 450 centimeters. But in reality, elements 300 and 400 centimeters long with a section of 6x2.7 centimeters are usually used.
Variety number 2. Guide ceiling profiles
Such profiles are used to create ceilings, walls and various boxes for the purpose of strengthening. Products are installed along the perimeter of walls / ceilings, rack-mount profiles are also inserted into them.
From the guide ceiling elements, a kind of basis is formed for the plane, which will subsequently be sheathed drywall sheets. The length can be 300 or 400 centimeters, while the cross section is 2.8x2.7 centimeters. All elements are thick enough (thin ceilings are not used), which ensures reliability. The best option and for the construction of wall frames.
Note! If you want, then profiles for you can be made according to custom order. In any case, high-quality galvanized steel is used in the manufacture, which increases the resistance of elements to impact. environment, temperature fluctuations, etc.
Variety number 3. Partition profiles for drywall
We continue to consider the types of profile for drywall. So, if we talk about partition products, then, according to experts, there are several varieties of them, and their use, accordingly, depends on the future thickness of the GKL structure. So, UW-profiles (in accordance with the same marking of the Knauf company) are used in partitions as guides. Their length varies between 200-400 centimeters, and their width can be 4-15 centimeters.
There are also rack products (or, in other words, CW profiles) that are made with notches that facilitate cable management. They are used in plasterboard partition structures and are the supporting elements of the entire frame.
Such elements are intended for use in vertical structures. The length can be from 276 to 600 centimeters, while the cross section is 5x5, 7.5x5 and 10x5 centimeters. By the way, profiles with a length of 300 and 400 centimeters are the most popular.
A separate group - corner, beacon and arched products
As for the arched types of drywall profiles, they are with holes and notches necessary to give the profiles flexibility. If we talk about the dimensions, then they are the same as those of ordinary elements, while the rigidity index is much higher. Arched profiles are used in order to receive arcs.
It would seem that there is nothing complicated in the formation of arcs, but in reality it is not. Although experienced professionals can easily cope with all this.
But with the help of beacon elements, various planes are aligned. For example, when plastering walls / ceilings. The length of such profiles is 300 centimeters. If you plan to create a smooth plane, then you simply cannot do without such an element (for example, to create slopes).
Important information! Beacon profiles for drywall significantly facilitate the difficult work of builders. They are attached to difficult places with a view to creating flat surface. Thanks to the material from which these profiles are made, it increases their resistance to various kinds of negative external influences.
Finally, there is more corner profiles. They are used, as you might guess from the name, to align / reinforce corners (for example, to protect the ends of partitions). Each element has holes with a diameter of 0.5 centimeters, which are necessary for better filling during the application of the putty mixture.
Various fasteners and accessories
In addition to the profiles themselves, other standard elements are also used during the installation process, which should also be prepared in advance. Let's take a closer look at each of these elements.
- Direct (normal) suspension. Designed for attaching a rack or ceiling profile to a work surface (see figure No. 1).
- Anchor hanger. With it, ceiling profiles are also attached, but only to the ceiling. Each element has a rod and a clamp that allows you to adjust the position of the suspension.
- Extension. With its help, strips of a metal profile are connected in a variety of combinations.
- Crab connector. Designed for cross-connection (and all drywall profile types), and strictly at a right angle, structural elements. As a rule, with the help of a "crab" the ceiling profiles are connected (of course, in the same plane) during the installation of the crate.
- Connectors of two-level type. As you probably guessed from the name, with the help of these fasteners, the profiles are attached at a right angle, but already at different levels.
- The last elements are self-tapping screws and anchor dowels. Designed to connect the elements of the frame to each other or, as an option, with the main floor in the room.
The illustration below shows all the described elements in the order in which they were presented.
What about work tools?
For the convenience of working with drywall sheets, special tools are used to create designs of the required parameters, and the work is done more easily and quickly, and the amount of waste is minimized.
More specifically, these tools include:
- metal scissors;
- divider;
- connecting pliers;
- cutter.
Using scissors for metal, elements of the required dimensions are cut. Tongs, in turn, are intended for connecting segments. By the way, among experienced specialists they are called a skrepprofile.
Note! To assemble the structure, the elements in which holes are previously made are connected. This is done using a cutter that punches mounting holes. As for the divider, it is used for the corner connection of profiles.
Video - What is required to work with drywall?
As you can see, in such a seemingly simple procedure - the creation of plasterboard structures - literally every little thing is calculated and thought out. All you need is patience and desire for the result to exceed all your expectations! This concludes the theoretical part and proceed to practice. First, let's look at how to properly cut drywall profiles.
Master Class. How to cut a drywall profile yourself
So, let's get acquainted with the process of cutting drywall profiles. To begin with, we note that many use scissors for metal for these purposes, since they consider the use of a grinder to be too complicated or time-consuming. However, people who have some experience with drywall constructions they don't think so.
What is the main advantage of using a grinder for cutting a metal profile? First of all, this is the fact that the geometry of the product after cutting remains the same, while after the shears for metal, the profile is simply deformed (to one degree or another).
Moreover, even if you try to work with metal shears with the utmost care, the end will end up being slightly damaged anyway. This, of course, is not critical, because the defect can always be corrected with the help of pliers. But this will require additional time.
Note! The most unpleasant in the cutting procedure is considered a squeezed edge. So, if you crush it, then the height of the product will increase, due to which the starting profile will unbend when the end is inserted into the groove. This, again, is not critical, but the culture of production suffers because of this, which not everyone likes.
Moreover, this way you will cut more slowly. Products will have to be turned over to make cuts on both sides, and then straighten and cut. With the use of a grinder, the speed of work increases markedly, especially if you need a lot of the same type of blanks for a particular design at once.
What should be the tool?
The tool that will be used to cut the profile deserves special attention. For example, a grinder (angle grinder), whose power is 650 watts, will show itself well, as well as cutting discs for metal, having a minimum thickness (from 0.1 to 1.5 centimeters). Thanks to this combination, the metal will pass quickly and without any special efforts. What is typical, the smaller the thickness of the disc, the easier it will be for you to cut the product.
However, this method also has its drawbacks. So, if work will be carried out in an apartment, then nearby objects will have to be protected from hot sawdust and sparks. And in some cases, there is simply not enough free space. Finally, the "admirers" of the sound of a working grinder - we are talking about neighbors - will immediately appear in order to personally inform you about this.
Note! Once again, it is worth recalling the safety precautions. Use funds personal protection– work gloves, goggles – and handle the tool with the utmost care. Try to stay away from the path of sparks at all times. And yet - try to always use a protective cover for the grinder.
Master Class. How to make a semicircular drywall partition
In yet another step by step instructions we will look at how to do drywall partition with rounded corner using profiles UW75/CW75. First you need to mark up on the floor, and then transfer it to the ceiling. It is convenient to first mark out a right angle (that is, without rounding as such), and then draw a square (its side is the required rounding radius). In order to calculate the length of the profile, you can use the formula:
A \u003d 3.14 x B,
- A is the circumference;
- B is, respectively, its diameter.
Next, you need to mark the UW profile by 5 centimeters (this parameter will correspond to the width of the side shelf of the CW product). Take the grinder and cut the profile as shown in the image below (that is, you only need to cut through the side / bottom shelves). About the types of profile for drywall, by the way, we have already described in the previous sections of this article.
Now you need to set the cut profile in accordance with the previously marked radius, and in our example, the product is attached to the ceiling with self-tapping screws, and to the floor with dowels. You should not regret the material - literally every piece should be fixed.
When everything is ready, it is necessary to insert a rack profile into each of the five-centimeter segments. In those last elements that will be intended to limit the doorway, it is imperative to insert a bar. Such bars, by the way, can be purchased for all profiles; they are good because they fit closely in the product.
After that, it is necessary to fix all the rack elements to the texes.
After cutting, drywall elements must be placed against the frame and secured with 2.5 cm self-tapping screws. Moreover, fastening should be done in strips. First of all, the first band is fixed in its entirety, then the second, third, fourth, fifth, and so on. We recommend starting from the top or bottom, because if you do it from the middle, the profile will bend, which will make it difficult to tighten the first screw.
To sew up all openings in accordance with the technology, L-shaped sheets of drywall are used. It is necessary to try so that the joints do not fall on those rack profiles that are intended to limit the opening, since the putty will definitely crack here.
The sheet can be pre-cut on the floor, but it is more convenient to do this already “in place”. It is recommended to take a sheet that goes to the opening, screw it on, and only then cut through the top with a hacksaw or a jigsaw. One side is cut through, breaks, then the second is cut through. So the work will be more accurate and faster.
And how to fix the profile on the walls?
For many, this is not a problem. In particular, if we are talking about a new room with enough smooth walls. Fastening is carried out using standard perforated hangers, the algorithm of actions is as follows.
Step one. First you need to fix the hangers to the walls using dowels.
step two. Then the suspensions need to be bent to get the letter "P".
Step Four. The latter has a special hole through which, using the "fleas", you need to fix the profile.
Step five. First, the profiles are fixed in most cases along the edges of the walls, then they are aligned and pulled between them by 3 threads. After that, the remaining elements are set and fixed according to the latter.
Video - Arrangement of a frame for drywall
