How to bend drywall? How to bend at home, how to bend in a semicircle, how to bend correctly

The use of bent gypsum board surfaces for finishing

In repairs, plasterboard is used to create partitions, cladding walls and ceilings. The walls themselves often have smooth transitions, arches, semicircles and other decorative design features; their finishing requires material of the appropriate shape.

Since the material consists of pressed gypsum (the main material of the core), this makes it possible to bend it: gypsum itself is known to be a fairly pliable material. The advantage of plasterboard sheets is their excellent, even appearance, so they need to be bent in the correct way without compromising their integrity.

Bent gypsum plasterboard opens up new possibilities in the design of your living space: with its help you can actually build beautiful multi-level ceilings, create smooth transitions, arches, and domes.

To work with curved surfaces, a separate type of building material has been developed - arched plasterboard, which has high strength. The fact is that its thickness is only 6-6.5 mm, this allows the material to be bent into the desired shapes, and the gypsum core is reinforced with glass fibers. Using this material, it is customary to create various curved structures and design solutions.

It has two disadvantages:

• glass fibers impart strength and bending ability at the same time. For this reason, cutting a sheet and securing it with self-tapping screws can be difficult;
• high cost of gypsum boards. For domestic needs, the use of arched plasterboard is not economically feasible in most cases.

That’s why people often use ordinary drywall: knowing how to bend it, it is successfully used when finishing non-standard surfaces and creating unique interiors. This allows installation work to be carried out without a significant increase in the expenditure budget. Below are some common ways to bend drywall.

Drywall cutting

Cutting is used in cases where sharp bends or structures of rather complex shape are required. The procedure is usually performed with a utility knife.

Using a tool, cuts are made on one side of the drywall, parallel to each other. The bending radius directly depends on the distance between them. Each cut should end approximately 1-3 mm from the edge of the sheet. When creating custom forms, you can use the following tips:

• Manufacturing a structure with a smaller radius is possible if you make U-shaped cuts.
• By making V-shaped cuts, you can bend the material in the opposite direction.

Attaching drywall to the profile is carried out, as in other cases, using self-tapping screws.

Dry fold

It is best to use arched plasterboard for these purposes. The sheets are elastic, lightweight, and bend to any radius. Arched plasterboard is not widely used due to its high price and small thickness. To assemble a strong and rigid structure, you have to lay the sheets in two layers. Therefore, for the manufacture of elements of complex shapes, ordinary gypsum board is most often used.

For dry bending, it is necessary to make a frame in advance that follows the shape of the element. To do this, you can use a drywall profile, plywood or other materials. The sheet is secured on one side with self-tapping screws and slowly given the desired bend, pressing it tightly against the frame. After this, the second edge is fixed. Before bending drywall, pay attention to its thickness: the larger the radius of curvature, the thinner the sheet should be.

How to bend plasterboard in a semicircle

Work with the product is carried out at home completely with your own hands, but in some difficult situations assistance may be required.

On a note! Gypsum-based products are fragile, so the process must be performed carefully and without haste. To understand the principle, it is better to practice on small scraps.

Plasterboard sheets come in different thicknesses, and accordingly, their ability to bend is different.

Dry method

This method allows you to obtain radius parts with different bends, which depend on the thickness of the material. So, with a standard thickness of 12.5 mm, the minimum radius will be 275 cm, and with 8 mm - 155 cm. Products of large dimensions are not used.

Using a needle roller

The tool is a roller with needles. GKL slabs up to 8 mm thick are suitable for this work; thicker parts cannot be bent completely “dry”.

Process diagram:

1. The fixation site is prepared: the area is cleared of all unnecessary things.
2. Using a metal profile, the desired bend is formed. To do this, the material is cut and fixed along the selected trajectory.
3. Both sides of the fragment are processed with a needle roller. The part should be heavily perforated.
4. Next, the installation is carried out very carefully. It is necessary to bend the gypsum board gradually, creating the desired shape. Fastening with self-tapping screws is also carried out sequentially.
5. The screws are first screwed in halfway, and after the area is completely rounded, final fixation is carried out.

When processing gypsum board with a needle roller, the structure of the material is disrupted on both sides, and its performance characteristics are greatly reduced; moreover, during bending, the sheets often break, so the method is not popular.
This technology does not allow creating complex shapes: if you bend a fragment in both directions, then it will burst. For more reliable fastening of the structure at the edges, a special corner is used.

Using a knife or cutter

By choosing these tools, it is possible to create a bend that cannot be achieved with the previous method. Each fixture is used to create different shapes of parts. The main condition is a sharp blade. It is advisable to provide for the possibility of sharpening or replacement if processing becomes difficult.

Cutting a workpiece with a construction knife is quite simple:

1. To bend a fragment under an arch, it is necessary to make many cuts in the shape of the letter V. The smaller the distance between the sections, the smoother the degree of curvature can be obtained. The work is carried out from one side: the blade is immersed so as not to damage the back of the pasted cardboard.
2. Since cutting disrupts the structure of the gypsum sheet, before fixing it is recommended to drill out holes for self-tapping screws to prevent deformation. Countersinking is also carried out so as not to immerse the screw head with force. The fragments can be fastened to a self-prepared metal or special arched profile.

It is not difficult to make notches with a sharp knife, but the bending radius with this method is relatively small.
The disadvantage of this method is that you cannot bend the plasterboard element with multi-stage waves, and besides, finishing takes a lot of time.

To bend a complex shape, a cutter is used:

1. Marking in progress. The distance between the lines is determined based on the radius that you want to obtain.
2. The gypsum is sampled to a depth of 1–2 mm less than the thickness of the sheet; the base cannot be completely removed.
3. The cutter is selected with a small volume to prevent deformation of the element.

Sampling using a cutter is a rather problematic task, especially for a home craftsman, but the bending of the sheet here will be maximum
. A part processed in this way will bend in any direction. But due to the fact that the overall rigidity is broken, the fragments cannot be used in areas that will be subject to constant mechanical stress.

You can correct the situation using a template and putty. To do this, a reverse form is made, according to which it is planned to bend the gypsum board, the processed element is applied to the workpiece and fixed. After fixing, the side with the sample is covered with putty. In a similar way, you can obtain decorative elements for the interior.

A good solution when milling gypsum boards is to subsequently apply putty to fill the grooves (slots), this approach allows you to create a durable radial surface

Wet method

For this process, ordinary drywall is used. The moisture-resistant version cannot be processed, so when performing work in a room with high humidity, the material is bent using a dry method.

The wet method is most often used to obtain a semicircle. If a more complex shape is needed, much more time and effort will be required.

The technology is as follows:

1. A template is being prepared. Various materials are used for this, but the design must be rigid and stable.
2. Parts of the required size are cut out from the gypsum board sheet.
3. Water at room temperature is applied to the products with a sponge or roller. Take into account that waterlogging should not be allowed, otherwise the product will become unusable.
4. To achieve better penetration of the liquid into the base of the slab, the parts on one side are rolled repeatedly with a needle roller.
5. The element is fixed at the edge of the template and begins to gradually bend. Fixation is carried out as the desired shape is obtained.
6. A day later, the drywall is released and installed in place.

When bending a sheet using a wet method, the product can be mounted only after it has completely dried and gained strength
. If you need to bend a small part, you can do without a mold and do the work on site.

On a note! The gypsum board should bend along, and not across, so when cutting a part, the direction is immediately marked.

Optimally flexible material – which one?

Before bending drywall for an arch, you need to purchase suitable material. The thinner one is easier to bend. Suitable flexible plasterboard has a layer thickness of 6.5 or even 6 mm. And its gypsum content is complemented by fiberglass reinforcement.

By choosing this type of material and having information on how to round off drywall, it becomes possible to build niches with arches, multi-level ceilings and various fancy curved interior shapes.

To try to bend a sheet of gypsum board yourself, you need to purchase flexible drywall in the store. This way you can bend drywall with little effort. Since the bending radius of thin material is much larger than that of ceiling or wall HA sheets.

For thin sheets, frames are made from profile material with cutouts on the sides. Someone who is determined to figure out how to bend drywall

with your own hands, you won’t be intimidated by the cost of this material compared to conventional ones.

Naturally, a beginner who decides to bend drywall on his own cannot avoid difficulties at first. Therefore, to train and hone your skills, it is better to find a small piece of material. And then start the process.

What materials can be used

Manufacturers of drywall have also provided for such a moment as bending of sheets. Yes, there are special tools and materials for this.

Firstly, to create smooth shapes you will need a frame in any case. It can be assembled using a regular CD brand ceiling profile with dimensions 60x27. Or a special arched one, which can easily create an appearance with graceful curved lines.

Secondly, the drywall itself is produced specially, branded. Its purpose is precisely this area.

Thirdly, there is a special tool to simplify the procedure of bending sheets.

Using these materials and devices, you can easily bend any drywall into a semicircle or simply give it a smooth bend.

Bend drywall: wetting with water

Due to its simplicity and effectiveness, this method is in first place in popularity. Gypsum absorbs moisture well, with its help it becomes more flexible; this is used to shape the drywall into the desired shape.

Before work, it is recommended to prepare a template according to which the bend will take place. It can be made from plywood; it will allow you to bend the surface more conveniently.

1. Liquid is applied to the surface using a paint brush. It is necessary to lubricate both sides of the sheet so that the liquid penetrates the cardboard and the top layer of gypsum, but does not completely saturate the entire core.
2. You need to wait a quarter of an hour: the liquid will be absorbed into the pores of the plaster, softening it, making it “plasticine”.
3. Having assessed the readiness of the material, you can begin to bend it to the required shape and angle.

Important! This method can be used if the surface has a large radius and sufficient smoothness.

If the angle of curvature is too large, the drywall may crack or break when bent. When working with such radii, other methods are used.

In any other case, during installation and after drying, the gypsum board will retain its reliability.

Where is bent plasterboard used?

GCR is widely used in repairs:

• leveling ceilings and walls without a frame;
• installation of partitions;
• creation of suspended ceilings;
• production of arches and smooth transitions;
• arrangement of figured structures.

Drywall is a kind of sandwich of cardboard around the edges and gypsum board in the middle, which allows for easy bending. Gypsum is a very pliable and “mobile” material, which is given strength by thick cardboard. Initially, sheets of drywall have a perfectly flat plane, and it is important to bend it in such a way that the integrity of the cardboard is not compromised.

The use of plasterboard for finishing walls and ceilings in an apartment

With the advent of gypsum boards and options for bending it, it became possible to make the interior of your apartment unusual with multi-level ceilings, semi-arches and smooth transitions.

Wet fold

This method produces a tighter bend. Before bending the drywall for the arch, prepare a template. Its radius is calculated taking into account the thickness of the sheet. The side of the slab facing the inside of the fold is moistened with clean water at room temperature using a roller or brush and left for 10 minutes until completely absorbed. If the sheet is not too thin, you can additionally roll it with a needle roller or pierce it with an awl. Please note that the material should be slightly damp and not soaking wet.

After absorbing the water, the soaked drywall is carefully laid on the template and fixed. The material remains in this position until it dries. Using the wet method, you can bend not only moisture-resistant drywall, but also gypsum boards and even fire-resistant drywall. When all the moisture has evaporated, the sheet will completely restore its performance characteristics, but will take on a new shape.

Folding sheets using cuts

The cuts will allow you to bend the drywall sheet when the material is planned to be used to form door arches. In this case, you can give the sheet an impressive radius. In order to bend a sheet, notches should be made on it with a certain step, the distance between them should vary from 3 to 5 cm. The sheet must be laid on the floor and leaned against the wall.

Using a ruler or a building level, parallel cuts are made on the canvas. If the paper layer is cut on one side, this will allow the sheet to be folded quite easily, leaving the paper layer on the other side intact. In addition, the risk of destruction of the canvas will be eliminated. If you are faced with the question of how to bend drywall for an arch, then at the next stage you need to break the plaster in the places of the cuts so that the canvas becomes as flexible as possible. If the technology has been followed, the drywall will bend quite easily, this will allow the canvas to be given the desired shape.

Now you should align the arch fragment with the plane of the wall and secure the sheet with self-tapping screws. In order for the results of the work to meet expectations, all operations must be performed carefully. The sheet must be fixed in increments of 5 cm. To do this, you need to use a screwdriver that has a torque adjustment function. This will allow you to tighten the screws correctly and quickly.

It is important to make sure that the metal frame is strong enough, otherwise the arch will not be as rigid as we would like. If the arch does not take on the appearance that meets your expectations, you should not make hasty conclusions. After the structure is covered with reinforced mesh and treated with several layers of putty, it will look more attractive.

How far can you bend drywall?

Still, drywall is not paper and you can bend it only to certain radii. The bending radius of drywall depends on its thickness and the size of the sheet that needs to be bent.

In the table you can see the dependence of the bending radius on the parameters of the Knauf plasterboard sheet.

Please note that the table shows two ways to bend drywall, these are the so-called “wet” and “dry” ways to bend drywall. The very names of these methods reveal the technological principle of bending drywall

The wet method involves moistening the gypsum plaster sheet, which causes the gypsum core to soften and be easily bent. The dry method of sheet bending is based on the technical characteristics of the sheet itself. The thinner the sheet, the easier it bends. The developers initially checked the safe bending radii of plasterboard sheets and compiled tables in which the bending radius is tied to the thickness of the sheet. Let's take a closer look at the wet and dry bending methods.

Bending methods

No matter what people come up with and no matter how sophisticated ordinary people are when creating non-standard geometry, there are only two ways to bend sheets - dry and wet.

The wet method is used to give standard 12.5 mm thick sheets a variety of shapes by wetting the surface and then bending them onto the frame.

Dry does not involve the use of water. The main thing is to purchase material specially designed for these purposes.

How to bend drywall in a semicircle using these working methods.

Dry method

To do this, purchase a special stamp sheet 6.5 millimeters thick, which can be bent into a perfect semicircle without any special devices. The most proven drywall from. Sheets of such material have a large margin of strength and significant ductility with a weight of 15 kilograms. Due to these properties, it does not require wetting when bending.

For the dry method of forming drywall in a semicircle, use 6.5 centimeter thick drywall.

1st step. Before starting bending work, you need to assemble a frame base on which this element will be fixed.

To do this, you can purchase a special arched profile, but you can make such a design yourself. What do we have to do?

• Take a rack profile with dimensions 50x50, on the shelves of which, using metal scissors, cuts are made in the form of the Latin letter “V”. To bend to the required diameter and rigidity, an additional strip of galvanized metal is cut out to repeat the desired bend. The strip is attached to one side of the trimmed profile, thus giving it the desired shape.
• In order to be able to attach a plasterboard element to it, cut-to-size pieces of a 60×27 rack profile are attached perpendicular to the arch. Additional rigidity is provided by a crab-type fastening.

Rules for making a wooden frame for drywall

All fastenings are made using black 25 millimeter screws; the fastening should protrude approximately 10 millimeters.

2nd step. The element required according to the parameters is cut out of the flexible sheet. On the resulting profile structure, it is bent, fixed in order with 25 mm self-tapping screws. The fastening caps are slightly recessed into the surface.

Wet method

This technique for bending drywall is used when processing standard gypsum boards with a thickness of 12.5 millimeters. In this case, a material property such as porosity is used. It perfectly absorbs moisture, which is why it becomes plastic and easily takes on the desired geometry, and after drying it retains the given shape. So, how to bend a sheet of drywall into a semicircle by wetting it?

To form drywall using the wet method, drywall with a thickness of 12.5 centimeters is used.

1st step. First you need to create a template according to which the sheet of material will be bent. It can be assembled using CD rack profiles or OSB board. The main thing is to get the necessary contours, a solid structure and the ability to attach the gypsum board to it with self-tapping screws.

2nd step. Before wetting the surface, it is rolled with a special needle roller. This is done to evenly distribute moisture inside the sheet. Without this, it will not be possible to bend the drywall evenly; it will simply break at the bend.

The important thing is that you need to pierce and wet the opposite surface, and not the one intended for plaster!

3rd step. Using a regular paint roller, the gypsum boards begin to be wetted until the water stops being absorbed into the surface.

When wetting, do not be too zealous; the water should not saturate the outer white plaster layer of drywall!

4th step. After getting wet, the sheet is placed on the template. Bending on the surface should be done together, very slowly, slowly and without making sudden movements.

5th step. After bending the sheet to the required limit, both ends are fixed with wooden blocks on clamps.

Fastening directly with self-tapping screws, without bars, can tear the sheet. This method can be used when bending small-sized plasterboard elements.

Do not dry drywall in the sun or at high temperatures; too rapid evaporation of water will lead to deformation and cracks.

Drying occurs within 7 – 8 hours. After complete drying, the sheet will take any given shape.

Other methods

You can also add a bend in such a way as trimming. This method is used if it is impossible to obtain a bend, even by wetting the gypsum board. How to do it?

1. On the side of the sheet that will be convex, longitudinal slits are made.
2. The step between them depends on obtaining the required radius. The greater the bend, the more often you need to make cuts.
3. The depth of the cuts should not reach the reverse side; a distance of 2 - 3 millimeters should remain uncut.
4. After this, the sheet is straightened on the frame and fixed with self-tapping screws.
5. The cracks resulting from cutting are sealed with putty.

This method is also no less effective, although not as aesthetic. In further finishing it will be more difficult to achieve uniform bending.

Well, another way to get a bend is to cut a sheet of drywall into separate elements, which are attached to the frame in order, joint to joint. When finishing, the seams are then sealed with sickle tape and plastered.

But as with the previous method, it is very difficult to achieve uniform contours using a plaster mixture. It is best to use the first two methods to get a beautiful shape.

Application in design

These fragile slabs have become often used to implement the most intricate interior design ideas. This was facilitated by their ability to take a wide variety of shapes, including curved ones. The latter are used for different purposes.

1. Using curly and curved shapes, you can add acoustic and sound effects to the room. This feature is often used in large halls: theaters, offices, entertainment centers and similar premises.
2. Behind the curved figures of the interior, you can very easily hide various communications without losing the overall appearance. In addition, gypsum is resistant to high temperatures, which makes it possible to safely lay electrical cables under it.
3. The curved shapes of the panels expand the designer’s capabilities, as a result of which he can bring to life his bold and original ideas for the interior design plan.

Notching method to bend drywall

For some reason it is impossible to wet the sheet; the notching method will be convenient. This is also a dry method, only more manipulations are carried out with the sheet. Don't be alarmed, this method will not damage the sheet.

Notching method:

• On one side of the sheet along the fold line, make cuts with a cutter at a five-centimeter distance from each other (a knife will do);
• The cuts must be made on the convex side of the sheet - more precisely, the side that will be convex;
• The smaller the expected radius, the fewer cuts there should be;
• The depth of the cuts is approximately 2-3 mm to the cardboard layer of the other side;
• The side with the cuts needs to be fanned out;
• The cuts should be filled with putty to secure the structure.

If a cutter is used for cuts, the cuts can be either U-shaped or V-shaped. That is, a sheet of drywall can also take the desired shape. Work carefully and everything will work out.

Bend drywall: work with a roller

This method is in second place in popularity, like bending drywall. You will need a needle roller with which you can make holes in the cardboard covering and plaster (top layer only).

• Pressing the roller onto the gypsum board, pass it on both sides of the sheet, making holes over the entire area.
• Then evenly and thoroughly moisten the plasterboard with water using a brush: the holes will help better absorption, and after softening they will allow the drywall to bend more strongly.

Attention! It is necessary to bend carefully, constantly making sure that the sheet does not crack. If necessary, you can add a small amount of water.

How to bend a sheet using the wetting method

If you want to give the drywall a curved shape, you can moisten the sheet from the back surface of the sheet. In order to maximize the bend, it is necessary to wet not only the back, but also the front side. The sheets are laid on a flat concrete floor, and they can be moistened using a garden sprayer or roller. If you want to wet the drywall heavily, you can even use a sponge. However, excess water can damage the material, so moisturizing should be gradual.

We bend drywall ourselves (video)

source: //tvoyprorab.com/instruktsiya-kak-sognut-gipsokarton-polukrugom-prostie-sposobi

Probably, each of those who worked with such a universal and very convenient construction and finishing material as gypsum plasterboard wondered how to bend drywall without damaging it. Naturally, the curved outlines of arched structures and “curly” partitions, spectacular multi-level suspended ceilings, at first glance of a novice master, seem simply an unattainable result. In fact, everything is much simpler.

It turns out that even though it looks fragile, drywall is still very flexible, and if you know a few tricks, you can easily bend it with an arc. Note that to create curved forms, the easiest way is to use a special type of gypsum board - arched. It has a thickness of 6.5 mm and has good ductility, which is achieved by additionally reinforcing the gypsum core with glass fiber. However, the cost of this material is higher than usual, and due to its small thickness it must be installed in two layers.

Today we will tell you how to properly bend drywall, describe the technology of this process and consider the most common methods of achieving the desired result.

Before starting a detailed description of the operating technology, it should be noted that the gypsum board sheet must be bent only along its length.

Features of the material

The material today is actively used in creating various partitions, leveling walls, and organizing arches. Moreover, each of these structures may have niches, transitions and other elements, the manufacture of which requires special knowledge explaining how to correctly bend drywall and give it the required shape.

This material is based on compressed gypsum, which is covered on both sides with layers of paper. It is the presence of such a middle part that determines the high plasticity of the plasterboard sheet. However, despite the many advantages that arched plasterboard has, it has a number of significant disadvantages:

• When attaching a sheet with self-tapping screws, serious difficulties can arise. This is explained by the fact that the gypsum is additionally reinforced with glass fibers, which increase its strength.
• High price relative to standard types of gypsum boards. Therefore, arched plasterboard is recommended to be used only when creating bent forms.

Installation of drywall is most often carried out on a pre-prepared structure made of steel profiles. This frame facilitates the process of creating original forms and allows you to secure the source material.

Basic conditions for bending

When bending gypsum board, it is important to understand that it has a maximum load that this material can withstand. In order to maintain its integrity, certain conditions must be observed when working with it:

• the sheet cannot be bent in the transverse direction;
• the smaller the radius of curvature of the created shape, the thinner the starting material should be;
• when bending with the front part outward, the maximum radius should be more than 100 cm;
• when bending with the front part inward, the radius should exceed 60 cm;
• Installation of the finished structure is carried out in two layers.

If the above conditions are not met, then over time the sheet will return to its original shape, tearing the screws out of the profile.

When round plasterboard partitions are made

If at the time of manufacturing the curved wall only single sheets were laid on the rest of the frame, after the round plasterboard partitions are covered with it in two layers, you can continue covering the structure. Upon completion, all that remains is to coat with putty all the joints of the sheets and the places where they are fixed with screws

. Then you should think about finishing the constructed wall. In addition, there is almost certainly more than one wire outlet along the length of the partition, so you will also have to deal with installing power points.

Subsequently, when the finishing work is completed, the drywall will be hidden under a layer of decorative plaster or wallpaper. Particular attention will need to be paid to the skirting boards, which must have an appropriate radius. Having coped with this task, you will receive something that you can be justifiably proud of - a spectacular result of your work. After all, through simple actions and with a minimum of materials, it was possible to make a rather elegant turn of the wall, not at an angle of 90 degrees, but in a beautiful bend.

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Where are curved surfaces used?

Of course, you don’t have to worry about it and make rectilinear forms that are simple to make. Even when creating a multi-level ceiling, you can assemble the structure while maintaining an angle of 90 degrees.

There are many designs where semicircular plasterboard is used: arches, multi-level ceilings, partitions.

But ceilings that have a two-tier structure, and even with smooth contours, greatly improve the external design. Smooth lines create a feeling of lightness and completeness.

Arches in doorways will visually expand the space, creating a feeling of spaciousness even in small rooms.

Curved shapes are perfect for decorating both living rooms and bedrooms. And due to the arches and semicircular bends in the openings, it is easy to create a smooth transition, for example, from the kitchen to the living room.

In any case, light semicircular curves will improve the design of the rooms.

Water

It involves the use of water: the sheet needs to be moistened.

Gypsum, as a component of any sheet of drywall, is a porous and soft material. This means that it perfectly absorbs moisture, as a result of which it becomes even softer. But you can do whatever you want with a soft leaf: while it is in this state, you can give it the desired shape without fear of injuring the leaf.

Many people mistakenly think that soft, damp drywall will dry out and return to its previous shape. This is not true: once it dries, it will retain the shape that you gave to the sheet.

Expert advice

If you are thinking about the question of how to bend drywall under an arch, but the bend should be impressive, you need to make cuts every 5 cm on the back surface of the sheet. But if you need to bend the bend only a little, then the sheet is moistened with a roller or sponge. At the beginning of work, it is necessary to think through the sequence of actions, this will avoid mistakes.

Method of “dry” bending of drywall

This method is used when you need to make an arch with a slight bend and a simple configuration, for example, rounding corners in a passage or corridor.

Method of “dry” bending of drywall

To begin with, prepare a sheet of the required size - measure the required surface of the sheet and cut it out. A metal frame is mounted for the arch, a profile is attached to it with self-tapping screws, the edges of which are cut to give the desired shape. Then a sheet of drywall is applied to the finished frame, very slowly bent along this structure, and then fixed with self-tapping screws. You only need to bend it along its length and very carefully to avoid breakage. After fixing, the arch is covered with putty.

How to bend arched drywall

This drywall has a minimum thickness of 6.5 millimeters. This already adds flexibility to the sheets. Additionally, fiberglass is built into their core. It is created like a regular one.

Weave thin threads. They can be obtained from glass by melting a quartz-based mineral composition with the formula SiO2. The silica melt is drawn through the molding holes, while simultaneously cooling.

Arched drywall

The result is yarn, only glass. In a fine-fiber state, the material becomes flexible and pliable. The threads are woven together. The resulting fabric serves as reinforcement not only in plasterboard, but also in a number of roofing coatings and waterproofing materials.

The fiberglass core of arched drywall holds gypsum particles, preventing them from falling apart when bent. Accordingly, specialized sheets do not need to be pre-wetted. This makes it possible to use a moisture-resistant version of drywall.

In other words, if a curved structure is planned in a bathroom, covered terrace or toilet, you need to use arched plasterboard even with a small bend, because the sheets must be moisture resistant. Simple ones in rooms with high humidity will swell, change geometry and will not last long.

A profile helps in deforming arched sheets. It makes it easy to bend drywall at home , because the special frame consists of “links”. Their bottom is uniform, but there are gaps in the sides. They allow you to move the walls, changing the geometry of the profile.

The caveat is that it costs several times more than usual. Since you have to fork out money for arched drywall, many try to save money on a frame for it, using a regular profile. how to bend it for an arch in the final chapter.